JPH0886821A - Radio wave measuring apparatus - Google Patents

Abstract

PURPOSE: To achieve a shortening of measuring time by setting the height of a liftable antenna to be suitable for a frequency range being controlled by a personal computer to record items other than the spectrum waveform while a device to be measured is being rotated. CONSTITUTION: A personal computer 52 directs to record items other than the spectrum waveform while a device 35 to be measured is rotated and at the same time, an antenna lift base 41 is controlled to set the height of an antenna 40 to be suitable for a measuring frequency range inputted. Then, the measuring frequency range is set on a spectrum analyzer 53 and the rotation of a turntable 59 is started. During the rotation of the turntable 59, since the personal computer 52 only monitors to determine whether the turntable 59 turns to 360 deg. or not, by sending out the items other than the spectrum waveform to a plotter 51 to be plotted previously, measuring time can be significantly shortened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a radio wave measuring device,
In particular, the present invention relates to a radio wave measurement device that measures radio waves such as electromagnetic field noise radiated by a device under measurement such as an information processing device. The electromagnetic field noise radiated from the information processing device is regulated in order to prevent the TV screen installed in the vicinity from being disturbed by the electromagnetic field noise radiated from the information processing device and the noise from being mixed into the audio device. There are standards in each country,
If this standard is not met, the device cannot be sold in that country. This standard is EMI standard (Electro Magnetic Ineterfe
rnce, electromagnetic interference noise).

In order to determine whether a device complies with the EMI standard, it is necessary to measure electromagnetic field noise radiated by the device and confirm that the measured value is below the standard value. This is called radio wave measurement below. Radio wave measurement is usually performed in the range of 30 MHz to 1000 MHz. The measuring distance is usually 3 m or 10 m.

Radio wave measurement is mainly divided into two types of measurement methods. One is a method of plotting a spectrum waveform in a wide frequency range, where the vertical axis is the electric field strength and the horizontal axis is the frequency, on a paper in order to see the outline in a short time. Is a method of measuring and is primarily used to obtain official measurements. The present invention relates to the former.

[0004]

2. Description of the Related Art General radio wave measuring equipment (Open field tes
41. The t site (hereinafter abbreviated as “site”) is, as shown in FIG. 41, a rotating means 91 for rotating the device under test 90 when measuring a radio wave emitted by the device under test 90 such as an information processing device, A vertically movable antenna 92 for receiving radio waves radiated by the device under test, and the vertically movable antenna 92
Spectrum analysis means 9 for displaying the analysis result together with the analysis of the spectrum of the radio wave received by
3 and image recording means 94 for recording the image of the analyzed spectrum waveform or other items,
The rotation means 91, the ascendable / descendable antenna 92, the spectrum analysis means 93, and the control means 95 for performing various controls on the image recording means 94 are included in the control means 95 after recording the measurement result image. Processing means 96
Is provided.

Even in the conventional example, in the entire radio wave measuring equipment, for example, as shown in FIG. 8, the second floor of the site is a test room and the first floor is a measurement room. The rotation of the turntable, which is the rotation means, and the elevation of the antenna are installed on the first floor, and the personal computer controls them through the GPIB interface. E
Radio waves emitted from the UT at 360 ° are received by an antenna, amplified by a preamplifier, and then input to a spectrum analyzer. The data is taken up by the personal computer by the GPIB interface and plotted on the paper by the plotter to obtain a chart as shown in FIG. 9, for example.

Further, FIG. 42 shows an operation process according to a conventional example. When the measurement is started in step S310, the operator inputs the measurement frequency range to the personal computer in step S311.

In step S312, the height of the antenna is controlled by controlling the antenna lift of the liftable antenna 92.
Set it to a height suitable for the input frequency. In step S313, a measurement frequency range is set in the spectrum analysis means 93.

In step S314, the screen of the spectrum analysis means 93 is set to hold the maximum value and the data writing state is set. In step S315, the rotating means 91
Rotate the turntable.

After rotating up to 360 ° in step S316, the turntable is stopped in step S317. In step S318, the spectrum analysis means 9
The writing of the data of 3 is stopped.

In step S319, the spectrum waveform of the spectrum analysis means 93 is read. Step S
At 320, the image recording means 94 plots the obtained spectrum waveform on paper.

In step S321, the limit line, vertical axis unit, horizontal axis unit, grid (scale), title, conditions, etc. are plotted on paper. Further, FIG. 43 shows the control according to another conventional example when the spectrum waveform of the spectrum analyzer is 1000 dots in the horizontal direction.

Another processing flow chart according to the conventional example is shown. As shown in the figure, the personal computer sends a data read command to the spectrum analyzer in step S330. In step S331, the data reading point (horizontal coordinate) n is set to 1.

In step S332, the personal computer receives and stores the nth dot data. In step S333,
Count up data read point n. The above processing steps S331 to S333 are repeated until n exceeds 1001, and in step S334,
The process ends when n exceeds 1001.

[0014]

In the conventional radio wave measuring apparatus, firstly, as shown in FIGS. 41 and 42, the turntable of the rotating means 91 is rotated to cause the spectrum analyzing means to rotate. Radio waves were measured, the measurement results were read by a personal computer and plotted on paper, and then the limit line, horizontal axis unit, vertical axis unit, grid (scale), title, conditions, etc. were plotted. For this reason, from the time the operator completes the input to the personal computer until the chart is obtained,
As shown in 2, it took about 80 seconds. Since the chart may plot several tens to several hundreds of screens per day, it has been necessary to reduce the measurement time per screen by even one second.

Secondly, it is impossible to determine how much margin the measured value has for the limit line or whether it is NG because it exceeds the limit line until the chart paper is viewed after the chart is plotted on the paper. There was a point. There is a problem that the measurement efficiency is deteriorated because OK / NG judgment cannot be made until the recording (plotting) of the image recording means 94 is completed.

Thirdly, after starting writing data on the screen of the spectrum analyzing means, the turntable rotation of the rotating means 94 is started, and the turntable is stopped before stopping writing data to the spectrum analyzing means. It was
Therefore, at the moment when the turntable of the rotating means 94 starts to rotate, the impact is applied to the device under test 90, that is, the EU.
In addition to T (Equipment Under Test), the electric field strength of radiated radio waves may change due to changes in the contact state of internal metal parts, etc. When the electric field strength changes significantly, it is written in the spectrum analysis means. However, there was a problem that the original value could not be measured correctly.

Fourthly, in the conventional radio wave measurement, a paper jam may occur while plotting a chart by the image recording means (plotter) 94, and a valuable measurement result may be lost. There was a problem that it was forced.

Fifth, normal radio wave measurement is carried out by a measurement system connected by a GPIB interface 55 as shown in FIG. 13, but when only a personal computer without the GPIB interface 55 is originally owned. In some cases, only the GPIB interface board is newly purchased and connected, so that the personal computer originally owned may have the GPIB interface 55 function. This eliminates the need to purchase a new personal computer for GPIB. However, when a GPIB interface board of a manufacturer different from that of the original personal computer is connected, the interface function becomes incomplete, and when the personal computer reads the screen data of the spectrum analysis means 93, the steps shown in FIG. S3
The conventional read command indicated by 30 has a problem that the waveform data may not be read in some cases. That is, the control shown in FIG. 43 has a problem that it is not easy to replace the device such as the control means.

Sixth, in the conventional radio wave measurement, FIG.
As shown in (a), the measurement values were converted by a calculation formula for obtaining the electric field strength, and the chart was plotted. Therefore, the screen of the spectrum analysis means during measurement is shown in FIG.
In contrast to the form shown in (b), the waveform plotted on the paper has the form shown in FIG. 22 (a).
The form of the spectrum analysis means screen and the chart were different. Therefore, when performing comparative measurements, the plotted chart paper cannot be compared with the spectrum analyzer screen that is being measured, and the measurement results cannot be compared until the plot is completed. Was.

Further, in the conventional method, the measured value itself is displayed correctly and looks good, but the noise level is not constant as shown in FIG. There was a problem. The cause is that the antenna factor and the cable loss differ depending on the frequency (a fixed antenna does not actually exist), so even if the measured value is zero, it is displayed as non-zero on the chart paper.
For this reason, when the base swell is observed over several MHz, it is not possible to identify whether this is really the base swell or whether the dark noise level is wavy, so the location of the radio wave cannot be found. There is a possibility that this may lead to deterioration of measurement efficiency.

Seventh, in the conventional radio wave measurement, FIG.
As shown in FIG. 1 (a), a method of plotting four screens on A4 paper is prevalent. FIG. 21A shows 30 MHz to 20
It is an example of a chart measured at 0 MHz divided into four times,
It is obtained by repeating the measurement system control as shown in FIGS. 42, 15, 16, 17, and 18 four times.

With such a method, the program for controlling the measuring system can be simplified, but as shown in FIG. 21 (a), the title, condition, vertical axis unit, and horizontal axis unit are repeatedly plotted four times. There was a waste, and the measurement time was delayed.

Eighth and ninth, the conventional radio wave measuring system is as shown in FIG. 13. In such a system, the antenna is first set to Hor and the turntable is rotated to measure. After plotting, the antenna was set to Ver and the turntable was rotated again to measure and plot. That is, it is necessary to measure Hor and Ver separately, and the measurement time delay has been a problem.

Ninth and tenth, the conventional radio wave measuring system is as shown in FIG. 13, but in such a system, it is necessary to replace the antenna according to the frequency. As shown in Fig. 13, the measurement room is usually on the first floor and the test room is 2
Since it is located on the floor, the delay of measurement time and the fatigue of the measurer when the replacement is frequent have been problems. Normally, it takes several minutes for one antenna exchange.

The types of antennas and the measurement frequency range are shown below. 30MHz-200MHz: Biconical antenna (Bicone) 200MHz-1000MHz: Log periodic
Antenna (logarithmic type) Here, an example of switching at 200 MHz is shown.
It may be switched at 0 MHz.

Eleventh, in the conventional radio wave measurement, for example, as shown in FIG. 43, FIG. 15, FIG. 16, FIG. 17, and FIG. 18, radio wave measurement is performed when the turntable is rotated once for each screen. . That is, the height of the antenna is fixed and measured at a certain height. But high frequencies (especially 200
At (MHz and above), the directivity in the height direction of the antenna is strong, and therefore there is a risk of measurement omission when the antenna is fixed at only one height.

Twelfth, the radio wave measurement is originally from 30 MHz to 1
It has to be performed in the range of 000 MHz, and the conventional measurement has measured the entire frequency range. For example, FIG.
As shown in the chart of (b), the frequency band n = 3 is 13
0MHz-200MHz, 1 scale on the horizontal axis is 7MHz
Therefore, what MHz is a certain point on the screen,
Or, if there are points at equal intervals, it is very difficult to judge what the frequency is every MHz. In radio wave measurement, it is very important how many MHz are present at multiple points, and whether or not these points are easy to distinguish greatly affects the measurement efficiency. Therefore, one scale on the horizontal axis is 5MHz or 10
It is necessary to use an easy-to-understand unit such as MHz. Further, it is desirable that the measurement start frequency (left end frequency) of each screen is a frequency with good sharpness (50 MHz unit or 100 MHz unit).

Further, the frequency band n = in FIGS.
6 is 600 MHz to 1000 MHz and it is difficult to see because it displays a wide range of 400 MHz on one screen, but this is 30 MHz to 1000 MHz on one sheet of paper.
This is because the plot is made in divisions. 30 according to the radio standard
Although it is supposed to measure MHz to 1000 MHz, actually, most of the devices radiate radio waves in the range of 30 MHz to 500 MHz, so the frequency of measurement at 500 MHz or higher is quite low.

[0029]

In order to solve the above technical problems, a first invention is, as shown in FIG. 1, in measuring a radio wave emitted from a device under test 10 such as an information processing device, Rotating means 11 for rotating the device under test 10,
The up-and-down antenna 12 that receives the radio waves radiated by the device under test, the spectrum analysis unit 13 that displays the analysis result of the spectrum of the radio waves received by the up-and-down antenna, and the analyzed spectrum. An image recording unit 14 for recording an image of a waveform or other items, the rotating unit 11, the vertically movable antenna 12, and the spectrum analyzing unit 1
3 and a control means 15 for performing various controls on the image recording means 14, and the control means 15 records items other than the spectrum waveform while the device under test 10 is rotated. The rotation-time recording instructing means 16 for instructing the above is provided.

The second invention, as shown in FIG. 2, is a rotating means 11 for rotating the device under test 10 when measuring a radio wave emitted by the device under test 10 such as an information processing device.
And an up-and-down movable antenna 12 for receiving radio waves radiated by the device under test, and spectrum analysis means 13 for analyzing the spectrum of the radio waves received by the up-and-down antenna and displaying the analysis result. And an image recording means 14 for recording an image of the spectrum waveform or other various items, and the control means 15 is used for measurement among a plurality of screens held by the spectrum analysis means 13. Limit line auxiliary display instructing means 17 for displaying the limit line is provided on the screen which is not displayed.

As shown in FIG. 3, the third aspect of the present invention is, when measuring the radio wave radiated by the device under test 10, rotating means 11 for rotating the device under test 10 and the radio wave radiated by the device under test. And a spectrum analysis means 13 for displaying the analysis result together with the analysis of the spectrum of the radio wave received by the climbable antenna, the spectrum waveform analyzed, or other various items. The image recording means 14 for recording the image, the rotating means 11, the vertically movable antenna 12, the spectrum analyzing means 13, and the control means 15 for performing various controls on the image recording means 14, The control means 15 includes the rotation means 1
Data writing start / stop means 19 for starting data writing to the spectrum analysis means 13 immediately after the start of rotation of 1 and stopping the data writing to the spectrum analysis means 13 immediately before the rotation means 11 is stopped Is.

As shown in FIG. 4, the fourth aspect of the present invention is, when measuring the radio wave emitted by the device under test 10, rotating means 11 for rotating the device under test 10 and the radio wave emitted by the device under test. And a spectrum analysis means 13 for displaying the analysis result together with the analysis of the spectrum of the radio wave received by the climbable antenna, the spectrum waveform analyzed, or other various items. The image recording means 14 for recording the image, the rotating means 11, the vertically movable antenna 12, the spectrum analyzing means 13, and the control means 15 for performing various controls on the image recording means 14, The control means 15 includes a spectrum data storage means 20 for storing measured spectrum data for each measurement. If you have lost chart paper in a paper jam or the like, re-recording instruction means for instructing the reading and re-records data from the spectrum data storage means 20 21
And are provided.

A fifth aspect of the present invention, as shown in FIG. 5, when measuring the radio wave radiated by the device under test 10, the rotating means 11 for rotating the device under test 10 and the radio wave radiated by the device under test. And a spectrum analysis means 13 for displaying the analysis result together with the analysis of the spectrum of the radio wave received by the climbable antenna, the spectrum waveform analyzed, or other various items. The image recording means 14 for recording the image, the rotating means 11, the vertically movable antenna 12, the spectrum analyzing means 13, and the control means 15 for performing various controls on the image recording means 14, The control means 15 displays a dot marker on the waveform displayed on the screen of the spectrum analysis means 13 and displays it on the screen. Is moved to the end is provided with a dot marker waveform on display instruction unit 22 makes it possible to read the waveform data as the screen upper value.

As shown in FIG. 6, the sixth aspect of the invention is to measure the radio wave radiated by the device under test 10, the rotating means 11 for rotating the device under test 10, and the radio wave radiated by the device under test. And a spectrum analysis means 13 for displaying the analysis result together with the analysis of the spectrum of the radio wave received by the climbable antenna, the spectrum waveform analyzed, or other various items. The image recording means 14 for recording the image, the rotating means 11, the vertically movable antenna 12, the spectrum analyzing means 13, and the control means 15 for performing various controls on the image recording means 14, The control unit 15 converts the limit line value and records the image without converting the measured value. Is provided with a conversion means 23.

As shown in FIG. 7, the seventh aspect of the present invention, when measuring the radio wave emitted by the device under test 10, rotates means 11 for rotating the device under test 10, and the radio wave emitted by the device under test. And a spectrum analysis means 13 for displaying the analysis result together with the analysis of the spectrum of the radio wave received by the climbable antenna, the spectrum waveform analyzed, or other various items. The image recording means 14 for recording the image, the rotating means 11, the vertically movable antenna 12, the spectrum analyzing means 13, and the control means 15 for performing various controls on the image recording means 14, The control means 15 combines a plurality of screens, and records a plurality of screens so that the titles, conditions, etc. are collected in one place. It is provided with a case other items collectively recording instruction means 24.

As shown in FIG. 8, the eighth invention is, when measuring the radio wave radiated by the device under test 10, rotating means 11 for rotating the device under test 10 and the radio wave radiated by the device under test. Among these, the vertically movable antenna 32 ₁ that receives the horizontally polarized wave, the vertically movable antenna 32 ₂ that receives the vertically polarized wave, and the spectrum of each radio wave received by each of the vertically movable antennas, and the respective analysis results. Spectrum display means 13 ₁ and 13 for respectively displaying
₂ and image recording means 1 for recording the image of each of the analyzed spectrum waveforms or other various items
4 ₁ , 14 ₂ , the rotating means 11, the elevating antennas 32 ₁ , 32 ₂ , the spectrum analyzing means 13 ₁ ,
13 ₂ and control means 15 for performing various controls on the image recording means 14 ₁ and 14 ₂ , and the control means 15 parallelly transmits the horizontally polarized radio wave and the vertically polarized radio wave. Each polarization parallel measurement instruction means 25 for instructing to measure is provided.

The ninth aspect of the present invention, as shown in FIG.
When measuring the radio wave radiated by the device 10,
Rotating means 11 for rotating the device 10, and the device under test
Receives horizontally or vertically polarized waves radiated by
Biconical antenna 33₁And Log Periodic
Antenna 33₂And the antennas that can be moved up and down
The analysis of the spectrum of each radio wave
Spectrum analysis means 13 for displaying analysis results respectively₁,
13₂And each spectrum waveform analyzed, or
An image recording device that records the image of other various items.
Step 14₁, 14 ₂And the rotating means 11 and the lifting and lowering units
Antenna 33₁, 33₂, The spectrum analysis means 1
Three₁, 13₂And the image recording means 14₁, 14₂To
And a control means 15 for performing various controls.
The control means 15 includes the biconical antenna 33.₁Get from
Horizontally polarized wave and the log periodic antenna 3
Three ₂Parallel measurements of vertical polarization obtained from
And the biconical antenna 33.₁Drips obtained from
Directly polarized wave and the log periodic antenna 33₂From
Perform parallel measurements of the obtained horizontal polarization in sequence.
Each polarization sequential parallel measurement instruction means 26 for instructing
It is a thing.

As shown in FIG. 10, the tenth aspect of the present invention, when measuring the radio wave radiated by the device under test 10, rotates means 11 for rotating the device under test 10, and the radio wave radiated by the device under test. Biconical antenna 33 for receiving
₁ and a log-periodic antenna 33 ₂ , spectrum analysis means 13 ₁ and 13 ₂ for respectively displaying the analysis results of the spectrum of each radio wave received by each of the above-mentioned ascendable and descendable antennas, and each analyzed. Image recording means 14 ₁ and 14 ₂ for recording the image of the spectrum waveform or other various items, the rotating means 11, the elevating antennas 33 ₁ and 33 ₂ , the spectrum analyzing means 13 ₁ and 13 ₂ and a control means 15 for performing various controls on the image recording means 14 ₁ and 14 ₂ , and the control means 15 continuously measures a predetermined frequency range without replacing the antennas. It has frequency continuous measurement instructing means 27 for instructing to do so.

The eleventh invention is, as shown in FIG.
When measuring the radio wave radiated by the measuring device 10,
Rotating means 11 for rotating the measuring device 10 and the measured object
Two liftable antennas that receive radio waves emitted by the device
12₁, 12₂And each of the antennas 12 capable of moving up and down₁, 1
Two₂Analysis of the spectrum of each radio wave received by
Together, the spectrum that displays each analysis result
Analysis means 13₁, 13 ₂And each of the spects analyzed
Lamb waveforms or other images of various items are recorded.
Image recording means 14 for recording₁, 14₂And the rotating means 1
1. The lifting antenna 12₁, 12₂, The spect
Ram analysis means 13₁, 13₂And the image recording means 1
4₁, 14₂And a control means 15 for performing various controls on the
And the control means 15 controls the height of one of the antennas.
The rotating means in multiple steps,
It also has a multi-step measurement instructing means 28 that makes multiple rotations.
Of.

The twelfth invention is, as shown in FIG.
When measuring the radio wave radiated by the measuring device 10,
Rotating means 11 for rotating the measuring device 10 and the measured object
Antenna that can move up and down to receive radio waves radiated by the device 1
Two₁, 12₂And the antennas that can be moved up and down
The analysis of the spectrum of each radio wave
Spectrum analysis means 13 for displaying analysis results respectively₁,
13₂And each spectrum waveform analyzed, or
An image recording device that records the image of other various items.
Step 14₁, 14₂And the rotating means 11 and the lifting
Antenna 12₁, 12 ₂, The spectrum analysis means 13
₁, 13₂And the image recording means 14₁, 14₂Nitsu
And a control means 15 for performing various controls.
The means 15 limits the measurement frequency to a practical range.
The frequency so that the horizontal axis of the recording result is easy to understand.
Frequency division limiting means 29 for dividing
It

[0041]

According to the first aspect of the present invention, as shown in FIG. 1, when measuring a radio wave radiated by a device under test 10 such as an information processing device, the frequency range to be measured is instructed to the control means 15, The height of the vertically movable antenna 12 is set to a height suitable for the frequency range. A measurement frequency range is also set for the spectrum analysis unit 13.

Next, the rotation by the rotating means 11 is started. At this time, the rotation-time recording instruction means 16 gives an instruction to the image recording means 14, for example, a spectrum waveform other than a limit line, a vertical axis unit, a horizontal axis unit, a lattice (scale), a title, a condition, etc. The image recording means 14 is instructed to record the item.

When the rotation by the rotating means 11 is performed by 360 °, and the rotation is completed and stopped, the writing of data to the spectrum analyzing means 13 is stopped, and the obtained spectrum waveform is recorded by the image recording means 14. It is recorded on paper. As a result, items other than the spectrum waveform can be recorded quickly.

In the second invention, as shown in FIG. 2, when measuring a radio wave radiated by a device under test 10 such as an information processing device, the frequency range to be measured is controlled by the control means 15.
The height of the antenna 12 that can be moved up and down is set to a height suitable for the frequency range. A measurement frequency range is also set for the spectrum analysis unit 13.

Next, the limit line auxiliary display instructing means 17 provided in the control means 15 displays the limit line on a screen which is not used for measurement among the plurality of screens held by the spectrum analyzing means 13. . Here, the “plurality of screens” means the spectrum analysis means 13
It is the one that can be finally combined and displayed by, and is actually stored in each memory area.

Thereafter, the control means 15 causes the rotation means 11 to start the rotation of the device under test 10,
When the 360 ° rotation is completed, stop the rotation.
The spectrum analysis means 13 stops writing data,
The spectrum waveform of the spectrum analysis means 15 is read, and the spectrum recording means 14 records the spectrum waveform obtained by the spectrum analysis means 15 on paper.

As a result, the limit line auxiliary display instructing means 17 can display the limit lines on the screens 18 ₁ to 18 _n of the spectrum analyzing means 13 which are not used for measurement. By the image recording means 14, without completing the recording,
Since you can judge the relationship with the limit line,
Radio waves can be measured with good measurement efficiency.

In the third invention, as shown in FIG. 3, when measuring the radio wave radiated by the device under test 10, the frequency range to be measured is instructed to the control means 15 and the ascendable / descendable antenna 12 of the antenna 12 is measured. The height is set to a height suitable for the frequency range. A measurement frequency range is also set for the spectrum analysis unit 13.

Next, the rotation by the rotating means 11 is started. In the present invention, after the rotation means 11 starts rotating, the data writing start / stop means 19 causes
The screen of the spectrum analysis unit 13 is set to a data writing state so that the impact due to the start of rotation does not affect the spectrum analysis unit 13.

After that, when the rotating means 11 completes the 360 ° rotation of the device under test 10, the data writing start / stop means 19 stops the data writing of the spectrum analyzing means 13 and then rotates. Means 11
To stop the rotation of. As a result, the impact when the rotation of the rotating means 11 is stopped does not adversely affect the spectrum analyzing means 13.

The spectrum waveform of the spectrum analysis means 13 thus obtained is input to the image recording means 14 and recorded therein.

In the present invention, as described above, by providing the data writing start / stop means 19, the impact generated at the moment when the rotation means 11 starts the rotation and at the moment when the rotation is stopped is caused by the spectrum analysis means. Data writing is started or stopped so as not to adversely affect 13.

In the fourth invention, as shown in FIG. 4, when measuring the radio wave radiated by the device under test 10 such as an information processing device, the frequency range to be measured is controlled by the control means 1.
5, the height of the vertically movable antenna 12 is set to a height suitable for the frequency range. A measurement frequency range is also set for the spectrum analysis unit 13.

Next, the rotation by the rotating means 11 is started. When the rotation is completed, the spectrum analysis means 13
Analyzes the spectrum waveform.

Then, the control means 15 controls the spectrum waveform, limit line, vertical axis unit, horizontal axis unit,
Spectrum data such as a lattice (scale), title, and conditions are stored in the spectrum data storage means 20. After that, the spectrum waveform is recorded from the image recording means 14 and recorded and output on paper or the like.

On the other hand, if a failure such as a paper jam occurs in the image recording means 14, valuable measurement results may be lost. In this case, according to the instruction from the re-recording instruction means 21, the spectrum data storage means 2
The spectrum data stored in 0 is read out, and the image recording means 14 is instructed to re-record. Therefore,
According to the present invention, there is no need to repeat the radio wave measurement for the device under test 10, which is efficient.

In the fifth aspect of the invention, as shown in FIG. 5, when measuring the radio wave radiated by the device under test 10 such as an information processing device, the frequency range to be measured is controlled by the control means 1.
5, the height of the vertically movable antenna 12 is set to a height suitable for the frequency range.

For the spectrum analysis means 13,
The dot marker waveform display means 22 fixes the screen of the spectrum analysis means 13 to prevent loss of spectrum data, and displays a dot marker on the left end of the screen of the spectrum analysis means 13.

Thus, for example, when a device such as the GPIB interface is newly replaced, the dot marker waveform display means 22 is used to display the dot marker on the screen of the spectrum analysis means 13, and it is possible to display the dot marker. You can find out with this.

The sixth invention will be described with reference to FIGS. 20 (a) and 20 (b). Conventionally, when performing radio wave measurement, the influence of the antenna factor from the electric field strength, cable loss and amplifier gain is calculated by the following formula: Electric field strength (dBμV) = (measured value) + (antenna factor)
The correct electric field strength was calculated by eliminating using + (cable loss)-(amplifier gain).

On the other hand, in the present invention, when performing radio wave measurement, instead of the electric field strength, the limit line is determined by factors affecting radio wave measurement, such as antenna factor, cable loss and amplifier gain. , The following formula: Limit line (dBμV) = (Limit value)-(Antenna factor)-(Cable loss) + (Amplifier gain) is used for conversion and recording is performed.

Here, the "antenna factor" indicates the amount of attenuation when the antenna receives radio waves. This value varies with frequency. "Cable loss" refers to the amount of attenuation that occurs when radio waves travel through a cable that connects an antenna and a measuring instrument (amplifier, spectrum, analyzer, etc.). The "amplifier gain" is a value that is amplified by the amplifier before the radio wave received by the antenna is input to the spectrum analysis means.

Therefore, in the present invention, for example, FIG.
As shown in (a), it is possible to prevent a state in which it is not possible to distinguish whether it is the dark noise level that does not disappear even during non-measurement or the bulge of the base, and for example, as shown in FIG. Can be identified.

As shown in FIG. 7, the seventh aspect of the invention sets the division number n to the control means 15 when measuring the radio wave radiated by the device under test 10 such as an information processing device.
Here, the "division number n" corresponds to the number of screens to be combined and recorded. For example, FIG. 23 of the seventh embodiment describes the case where n = 5.

A measurement frequency at the recording position n = 1 is set in the spectrum analysis means 13, and the height of the ascendable / descendable antenna 12 is set in a range suitable for the measurement frequency.

Next, the plural screen combination other item batch recording instruction means 24 displays a limit line on the screen of the spectrum analysis means 13 and the spectrum analysis means 1
Put the screen of 3 into the write state.

When the rotation means 11 is started to rotate and the rotation is ended, the content of 1 / n of the spectrum waveform of the spectrum analysis means 13 is recorded. The above process is repeated n times, and the plural screen combination other item batch recording instruction means 24 combines and records the divided n screens.

As shown in FIG. 8, the eighth aspect of the present invention, when measuring the radio wave radiated by the device under test 10 such as an information processing device, the polarization parallel measurement instruction means 25 of the control means 15 is provided.
Controls the ascendable antenna 32 and sets it to measure horizontal polarization, controls the ascendable antenna 32,
Set to measure vertical polarization.

The height of each vertically movable antenna is set to a height suitable for the frequency range. The measurement frequency is set for each spectrum analysis means and the screen is initialized. After that, the rotating means 11 rotates the device under test 10 to record the analyzed spectrum waveform by each image recording means.

The processing operation of the radio wave measuring apparatus according to the ninth invention will be described. As shown in FIG. 9, when measuring a radio wave radiated by the device under test 10 such as an information processing device, the polarization sequential parallel measurement instruction means 26 of the control means 15
The vertically movable biconical antenna is set to horizontal polarization, and the height of the antenna is set to a height suitable for the frequency range.

Similarly, the ascending / descending log periodic antenna is set to vertical polarization, and the height of the antenna is set to a height suitable for the frequency range. The measurement frequency is set for each spectrum analysis means and the screen is initialized.

After that, the rotating means 11 rotates the device under test 10 to record the analyzed spectrum waveform by each image recording means. Next, each of the polarization sequential parallel measurement instruction means 26 resets the vertically movable biconical antenna from the horizontally polarized wave to the vertically polarized wave, and changes the vertically movable logperiodic antenna from the vertically polarized wave to the horizontally polarized wave. After resetting, the above process is repeated.

The processing operation of the radio wave measuring apparatus according to the tenth invention will be described. As shown in the figure, in the present invention, the continuous frequency measurement instructing means 27 sets the vertically movable biconical antenna to horizontal polarization, and sets the height of the antenna to a height suitable for the set frequency range n. Set.

Similarly, the provisionable log periodic antenna is set to vertical polarization, and the height of the antenna is set to a height suitable for the frequency range n. The measurement frequency n is set in each spectrum analysis means, and the screen is initialized.

After that, the rotating means 11 rotates the device under test 10 to record the analyzed spectrum waveform by each image recording means. Next, the above process is performed for the next frequency band n + 1 that continues the set frequency band n. In this way, n is repeated for each set continuous frequency band.

The operation process of the radio wave measuring apparatus according to the eleventh invention will be described. In the present invention, the multi-step measurement instructing means sets one vertically movable antenna to horizontal polarization and sets the height of the vertically movable antenna to a height suitable for the set frequency. The height of the other antenna that can be raised and lowered is set sequentially in several stages.

The rotating means 11 rotates the device under test 10 with respect to the height of the other antenna which can be moved up and down initially, and writes data in the spectrum analyzing means 13.

Similarly, the height of the next stage is set for the other antenna which can be moved up and down, and the rotating means 11 is used.
By rotating the device under test 10,
Write the data to the spectrum analysis means. The above process is repeated for the set number of stages.

The operation process of the radio wave measuring apparatus according to the twelfth invention will be described. In the present invention, the frequency division limiting means 29 sets one vertically movable antenna to horizontal polarization and sets the height of the vertically movable antenna to a height suitable for the set frequency.

The height of the other antenna that can be raised and lowered is also set to a height suitable for the set frequency. First set,
With respect to the frequency, the device under test 10 is rotated by the rotating means 11 and data is written in the spectrum analyzing means 13. The above process is repeated several times for the set number of steps.

[0081]

Next, a radio wave measuring apparatus according to an embodiment of the present invention will be described. FIG. 13 shows radio wave measuring equipment according to the first to seventh embodiments.

As shown in the figure, the radio wave measuring equipment (site) 43, which is the radio wave measuring device according to each embodiment, has a second floor test room 34 covered with a non-conductive roof 38 and a first floor. It consists of a measuring chamber 44 of a part. Equipment under test such as information processing equipment (hereinafter referred to as "EUT"; Equipment Under Test) 3
5, rotation means 56 for rotating the EUT 35, and the E
Antenna 5 that can be moved up and down to receive radio waves emitted by the UT 35
7, the spectrum analysis means 58 for displaying the analysis result together with the analysis of the spectrum of the radio wave received by the ascendable / descendable antenna 57, and the image of the analyzed spectrum waveform or other items. Graphic plotter 51 and rotating means 5
6, a vertically movable antenna 57, the spectrum analysis means 58, and a personal computer (including a program) 52 that performs various controls on the graphic plotter 51.

Further, in the radio wave measuring equipment 43, a ground plane (ground plane) 39 made of a metal plate or a metal net is a metal ground plane between the first floor and the second floor.
And the turntable controller 49,
Antenna lift controller 50, graphic plotter 51, personal computer 52, and spectrum analyzer 53
Are mutually connected by a GPIB interface cable 55.

The rotating means 56 includes the turntable controller 49, the non-conductive base 36 and the metal plate 3.
7, a turntable 59 that is rotatable by 360 °, the controller 49, and the turntable 5
And a drive cable 47 for connecting the nine cables.

The circumference of the metal plate 37 of the turntable 59 is electrically connected to the ground plane 39 by a metal spring, a metal brush or the like. Further, the vertically movable antenna 57 includes the antenna 40 and the antenna 40.
It has a support column 41 for supporting the vertical movement of the antenna, an antenna lift base 42 for moving the antenna 40 up and down, an antenna lift controller 50, and a drive cable 48 connecting the controller 50 and the antenna lift base 42.

Further, the spectrum analysis means 57 is
It includes a preamplifier 54, a spectrum analyzer 53, and an antenna cable 46 connecting the preamplifier 54 and the antenna 40.

The measuring distance between the EUT 35 and the antenna 40 is set to, for example, 3 m or 10 m, and the height of the non-conductive base 36 is set to, for example, 0.8 m or 1 m. The height of 42 is, for example, 1 to 4 m.
Set to. In the figure, reference numeral 45 is the ground. 14
An example of a spectrum chart obtained as a measurement result by the graphic plotter 51 is shown in FIG.

As shown in the figure, the spectrum chart (hereinafter referred to as "chart") is an A4 size paper 60.
In, one screen is plotted. However, there are cases where four screens or more are plotted. Reference numeral 61 is a limit line, which indicates a standard limit value. In FIG. 14, the horizontal axis represents frequency and the vertical axis represents electric field strength (dB μV: dB → decibel, μ → 10 ^-6 , V → volt).
Indicates.

Next, the first embodiment will be described with reference to FIGS. 13, 14 and 15. In the first embodiment, the personal computer (including the program) 52 in FIG. 13 is instructed to record the items other than the spectrum waveform while the EUT 35 is rotated, as described in the first invention. The function corresponding to the rotating recording instruction means 16 is provided. Here, “items other than spectrum waveform” include limit line, vertical axis unit, horizontal axis unit, lattice (scale), title, condition, and the like.

Next, the processing operation of the personal computer 52 of the radio wave measuring apparatus according to this embodiment will be described with reference to FIG.
In the figure, the dotted line represents the work performed by the operator, and the solid line represents the work in which the personal computer operates the peripheral equipment through the GRIP interface (the same applies hereinafter).

As shown in FIG. 15, when it is determined that the measurement is started in step S30, the operator inputs the measurement frequency range to the personal computer 52 in step S31. In step S32, the personal computer 52 controls the antenna elevator 41 to set (set) the height of the antenna 40 to a height suitable for the input frequency. In step S33, the spectrum analyzer 53 is set to the measurement frequency range.

In step S34, the screen of the spectrum analyzer is set to hold the maximum value, and the data writing state is set. In step S35, rotation of the turntable 59 is started.

When rotation of the turntable 59 is started, in step S36, the means corresponding to the rotation-time recording instruction means 16 of the personal computer, which is the control means, records the items other than the spectrum waveform so as to record the items other than the spectrum waveform. Instruct the plotter 51.

At step S37, the personal computer 52
It is monitored whether or not the turntable 59 has finished rotating by 360 °, and if it is determined that the turntable 59 has finished rotating, the turntable 59 is stopped in step S38.

In step S39, the writing of data in the spectrum analyzer 53 is stopped. Step S4
0, PC 52 is spectrum analyzer 53
And the graphic plotter 51 records the read spectrum waveform on paper in step S41.

As described above, in this embodiment, while the turntable 59 is rotating, the personal computer 52 is
Since it is only monitoring whether the turntable 52 has rotated 360 °, the personal computer 52 sends the data other than the spectrum waveform to the plotter 51 by using this time and plots it in advance. As a result, the measurement time can be greatly reduced.

The time required for one turn of the turntable 59 is about 30 seconds, which cannot be shortened unless the rotation speed is changed. On the other hand, items other than spectrum waveform, that is, limit line, vertical axis unit, horizontal axis unit,
Since the lattice (scale), conditions, etc. can be plotted in about 20 seconds, by plotting them while the turntable 59 is rotating, it is possible to plot in about 20 seconds compared to the conventional case. The measurement time can be shortened. In a normal radio wave measurement, it is necessary to perform chart measurement of several tens to several hundreds of screens per day for several days, and this embodiment can significantly reduce the number of measurement days.

FIG. 13 and FIG. 16 for the second embodiment.
It will be described based on. In this embodiment, the personal computer (including the program) 52 shown in FIG. 13 uses the EU for the items other than the spectrum waveform as described in the first invention.
The rotation recording instruction means 16 for instructing to record while the T35 is rotating, and as described in the second invention, it is not used for the measurement among the plural screens held by the spectrum analysis means 58. It has a function corresponding to the limit line auxiliary display instruction means 17 for displaying the limit line on the screen.

The ordinary spectrum analyzer 53 has a screen of a plurality of channels, and these can be displayed alone or in an overlapping manner. In normal measurement, two screens are often used for the continuous writing state and maximum value holding, and the third screen or
Display the limit line on the 4th screen.

Next, the operation of the second embodiment will be described with reference to FIG. In this embodiment, steps S51 to S5
The process of 3 corresponds to steps S31 to S33 of the first embodiment. In step S54, the personal computer 5
A limit line is displayed on one of the plurality of screens of the spectrum analyzer 53 by a function corresponding to the limit line auxiliary display instruction means 17 provided in 2.

This is usually done by displaying a limit line on the 3rd screen or the 4th screen, since two screens are often used for the normal writing state and the maximum value retention in normal measurement. After that, the processing of steps S55 to S62 corresponds to the processing of steps S34 to S41 of the first embodiment.

In this embodiment, as described above, in addition to the effect described in the first embodiment, the limit line is displayed on the screen of the spectrum analyzer 53 which is not used for measurement. As a result, the operator can easily visually check whether the measured value has a margin with respect to the limit line, that is, whether it is OK or NG, and prepare for the next measurement without waiting for the completion of plotting. The measurement efficiency will be greatly improved since it can be moved to the same place.

Next, the third embodiment will be described with reference to FIGS. In this embodiment, as described in the first invention and the first embodiment, items other than the spectrum waveform are recorded on the personal computer (including the program) 52 of FIG. 13 while the EUT 35 is rotated. As described in the second embodiment and the second embodiment of the invention, the rotation recording instruction means 16 for instructing that the limit line is displayed on the screen not used for measurement among the plurality of screens held by the spectrum analysis means 58. Limit line auxiliary display instructing means 17 for displaying, and as described in the third invention,
Corresponding to the data writing start / stop means 19 that starts writing data to the spectrum analysis means 58 immediately after the rotation means 56 starts rotating and stops writing data to the spectrum analysis means 58 immediately before stopping the rotation means 56. The means for doing so is provided.

Next, the processing operation of the third embodiment will be described with reference to FIG. In FIG. 17, step S70-
The process up to step S75 corresponds to steps S50 to S55 of the second embodiment shown in FIG.

In step S76, the means corresponding to the data writing start / stop means 19 sets the spectrum analyzer screen to hold the maximum value (in the data writing state). Steps S77 and S78 correspond to steps S57 and S58 of the second embodiment.

However, unlike the first and second embodiments,
Before stopping the turntable 59 in step S80,
In step S79, the spectrum analyzer 53
Stops writing data. Steps S81 and S82 correspond to steps S61 and S62 of the second embodiment.

As described above, this embodiment has the following effects in addition to the effects described in the first and second embodiments. Measurement control is performed so that data writing to the spectrum analyzer 53 is started immediately after the turntable 59 starts rotating, and data writing to the spectrum analyzer 53 is stopped immediately before the turntable 59 is stopped. As a result, even if the EUT 35 radiates a radio wave that should not originally occur due to the impact of the start and stop of rotation of the turntable 59, the spectrum analyzer 53 does not measure the radio wave, and highly accurate measurement is possible. It has the effect of being possible.

Further, a fourth embodiment will be described with reference to FIGS. 13 and 18. In the personal computer (including the program) 52 according to this embodiment, as described in the first invention and the first embodiment, items other than the spectrum waveform are recorded while the EUT 35 is rotated. As described in the rotation recording instruction means 16, the second invention and the second embodiment, the limit line is displayed on the screen not used for measurement among the plurality of screens held by the spectrum analysis means 58. As described in the limit line auxiliary display instruction means 17 for displaying, the third invention and the third embodiment, the data writing to the spectrum analysis means 58 is started immediately after the rotation means 56 is started to rotate, and the rotation means 56 is started. Data writing start / stop means 19 for stopping the data writing to the spectrum analysis means 58 immediately before
And, as described in the fourth aspect, the spectrum data storage means 20 for storing the measured spectrum data for each measurement, and the spectrum data storage means when the chart paper is lost due to a paper jam or the like. It has a program which is a unit corresponding to each unit of the rerecording instructing unit 21 which reads out data from 20 and instructs rerecording.

The processing operation of the radio wave measuring apparatus according to this embodiment will be described with reference to FIG. As shown in FIG. 18, in step S90, it is determined whether or not re-plotting is performed. If it is not re-plot, the process proceeds to step S92 and the measurement is started.

Steps S92 to S103 correspond to the processing steps S70 to S81 of the third embodiment shown in FIG. In the present embodiment, unlike the third embodiment, after the spectrum waveform of the spectrum analyzer 53 is read in step S103, step S1
In 04, the spectrum waveform is stored in the memory area (hard disk or the like) which is the spectrum data storage means 20. Similarly, a limit line, a vertical axis unit, a horizontal axis unit, a grid (scale), a title, conditions, etc., which are data other than the spectrum waveform, are stored in the memory area which is the spectrum data storage unit 20.

Then, in step S105, the spectrum plotter 51 plots the spectrum waveform on the paper.

If a paper jam occurs and the chart paper is lost while plotting a chart on the plotter, it is determined in step S90 that re-plotting is necessary, and step S91 is performed. Then, the re-recording instructing means 21 reads out data from the memory area, which is the spectrum data accumulating means 20, and instructs re-plotting.

As described above, in this embodiment, in addition to the effects described in the first, second and third embodiments,
The following effects are exhibited. When the measured spectrum data is stored in the spectrum data storage means 20 such as a memory area such as a hard disk built in or added to the personal computer 52 for each measurement, and the graphic plotter 51 loses the chart due to a paper jam or the like. Is provided with a re-recording instruction means 21 for reading data from the memory area and re-plotting it.

Therefore, the personal computer 52 waits for input so that the measurement and the re-plot can be selected at the start of the measurement, and when the operator selects the re-plot, the personal computer 52 reads the data from the memory area and the graphic plotter. 51 and re-plot. As a result, even if the chart paper is lost due to a paper jam or the like, re-measurement is unnecessary, and quick and efficient radio wave measurement can be performed.

Next, a radio wave measuring device according to the fifth embodiment will be described. The present embodiment corresponds to the fifth aspect of the present invention, in which the personal computer 52 as the control means displays a dot marker on the waveform displayed on the screen of the spectrum analysis means 58 and displays it at the top of the screen. Means corresponding to the dot marker waveform display means 22 for moving the waveform data as the upper limit value of the screen to be read is provided.

Next, the processing operation of the radio wave measuring apparatus according to this embodiment will be described with reference to FIG. The example shown in the figure is
The present invention relates to the control of the personal computer 52 when the spectrum waveform of the spectrum analyzer 53 is 1000 dots in the horizontal direction.

As shown in the figure, in step S110,
The screen of the spectrum analyzer 53 is set to the fixed mode. In step S111, the spectrum analyzer 5
Display a dot marker at the left end of the screen of 3. Step S
At 112, the data read point (horizontal coordinate) n is set to 1.

In step S113, the marker is moved to REF (upper end of screen, 60 dBμV in FIG. 14). Since the fixed mode is set in step S110 (A), the screen does not change and only the value of REF changes. Step S11
In step 4, the personal computer 52 reads the numerical value of REF, converts it into the numerical value of spectrum data, and stores it as the n-th data.

In step S115, the RF value is returned to the original value. In the case of FIG. 14, it is returned to 60 dBμV. Step S1
At 16, count n. N is 1 in step S117
If it is not 001, the process proceeds to step S118, and the marker is moved laterally (right) one step.

The above processing repeats steps S113 to S118 until the count value n exceeds 1000. In the present embodiment, unlike the normal waveform reading, a dot marker is displayed on the screen and moved to the upper end of the screen to read the waveform data as the upper end value of the screen.

When a device with an imperfect GPIB interface is combined, the screen data may not be read by the data read command because it is a numerical value of 0 to 1000, that is, a 4-digit numerical value, but the screen upper limit value (REF value) As shown in FIG. 14, since it is 60, that is, two digits, it can be read with a very high probability.

FIG. 13 and FIG. 2 for the sixth embodiment.
Description will be made based on 0. This embodiment corresponds to the sixth aspect of the present invention, in which the limit line value converting means 23 for recording an image converts the limit line value to the personal computer 52 without converting the measured value. The corresponding means are provided.

Unlike the conventional example, the limit line value converting means 23 according to the present embodiment is different from the conventional example in that instead of calculating the electric field strength, as shown in FIG.
V) is calculated based on the above-mentioned formula.

That is, limit line (dB μV) = (limit value)-(antenna factor)-(cable loss) +
The limit line is calculated from (amplifier gain). As a result, the dark noise level at the time of non-measurement becomes constant, so that even if broadband noise occurs and the base rises, it can be easily identified as shown in FIG. Also, because you can compare the plotted chart paper and the spectrum analyzer screen,
You can easily compare the measurement results before and after radio wave countermeasures,
The measurement efficiency is greatly improved.

In radio wave measurement, it is important to obtain the electric field strength correctly, but it is sufficient to know how much margin the measured value has with respect to the limit line.

Regarding the seventh embodiment, FIG. 13, FIG.
This will be described with reference to FIGS. 22, 23 and 24. This embodiment corresponds to the seventh invention. As described in the first invention and the first embodiment, the personal computer 52 stores the items other than the spectrum waveform in the device under test. The rotation recording instruction means 16 for instructing to record while rotating and used for the measurement among the plural screens held by the spectrum analysis means as described in the second invention and the second embodiment. Limit line auxiliary display instructing means 17 for displaying a limit line on a screen not displayed, and spectrum data storage for storing measured spectrum data for each measurement as described in the fourth invention and the fourth embodiment. Means 20 and re-recording instructing means 2 for instructing re-recording by reading data from the spectrum data accumulating means 20 when the chart paper is lost due to paper jam or the like.
1 and a plurality of screen combination recording instruction means 24 for recording images so that a plurality of screens are combined and the title, condition, etc. are collected in one place, as described in the seventh invention.

Next, a first example (in the case of five divisions) according to the seventh embodiment will be described with reference to FIGS. 21 and 22 (b). In FIG. 21, when it is not time to re-plot in step S120, the process proceeds to step S122 and measurement is started. When the measurement is started, the process proceeds to step S137 via the connector (A), the plot position is initialized, and n =
Set to 0.

In step S136, the plot position n is counted up to n = n + 1, that is, n = 1. At present, since n = 1 and not n = 5, step S12
Go to 3. In step S123, the personal computer 52
The measurement frequency at the plot position n is set in the spectrum analyzer 53 and the screen is cleared.

In step S124, the antenna lift table 42
Is controlled to set the antenna height to a height suitable for the measurement frequency at the plot position n. In step S125, the limit line is displayed on the screen of the spectrum analyzer 53. In step S126, the spectrum analyzer screen is set to hold the maximum value (data write state). In step S127, rotation of the turntable of the rotating means 56 is started.

In step S128, the coordinates of the plot position n are set in the plotter, and the limit line, vertical axis unit, horizontal axis unit, grid (scale), title, condition, etc. are plotted (B).

In step S128, the contents to be plotted are divided into five equal parts, and when passing through step S128, they are executed 5 times each by 1/5. Step S1
When it is determined in 29 that the turntable has rotated 360 °, the process proceeds to step S130, and the turntable is stopped. In step S131, the writing of data in the spectrum analyzer 53 is stopped.

In step S132, the spectrum waveform of the spectrum analyzer 53 is read. Step S
At 133, the spectrum waveform is stored in the memory area of the block section of the hard disk. Step S134
After plotting the spectrum waveform at the coordinates set in (B), the process returns to step S136 to count up the plot position (n = n + 1).

Thus, in step S135, n =
If it is determined to be 5, the process proceeds to step S120, and if re-plotting is not necessary, the process ends, and if re-plotting is necessary, the process proceeds to step S121.
Data is read from the data storage means and re-plot is performed.

Plural measured screens are connected and plotted, and the titles, conditions, etc. are collectively plotted in one place. FIG. 22B shows 30 MHz to 100 MHz and 100.
This is an example of a 5-division chart obtained as a result of measurement control when two and three screens of MHz to 300 MHz are connected and plotted, and titles and conditions are collectively plotted in one place.

In the figure, the horizontal axis represents frequency, the vertical axis represents electric field strength, and the limit line represents the standard limit value. In addition, FIG.
The numbers in the graph represent plot positions, which are represented by n in the flowchart of FIG. Although the spectrum waveform is not displayed on each screen, the waveform as shown in FIG. 14 is actually plotted.

Next, FIGS. 23 and 24 are diagrams for explaining an example of the sixth embodiment in the seventh embodiment. This example is different from the case of 5 divisions of FIGS. 21 and 22 (b) in the above-described example, and describes the case of 6 divisions.

Steps S140 to S154, steps S156 and S157, steps S120 to S134, and step S136.
Corresponding to step S137, and in step S135 it is determined whether n = 5, whereas in step S155
Then, it is different in that it determines whether n = 6. Also, in FIG. 23, the contents plotted in step S148 are divided into six equal parts, and when passing through step S148, 1 /
It is executed 6 times in 6 times (B).

Further, FIG. 24 shows 30 MHz to 150 MH.
It is an example of a 6-division chart obtained as a result of measurement control in the case where z and three screens of 150 MHz to 300 MHz are connected and plotted, and the titles, conditions, etc. are collectively plotted in one place.

In the figure, the numbers indicate plot positions, and FIG.
Is shown as n in the flow chart of FIG. Although the spectrum waveform is not displayed on each screen, the waveform as shown in FIG. 14 is actually plotted.

As described above, in the present embodiment, in addition to the effects described in the first, second and fourth embodiments, unnecessary plots are eliminated, and thus it is necessary to measure the conventional four screens. It is possible to measure 5 screens or 6 screens within a time substantially equal to the measured time, and it is possible to greatly reduce the measurement time.

Further, there is an advantage that a wider frequency range can be displayed on one sheet of paper as compared with the conventional case, the measurement efficiency is improved, and the limit line of each screen is connected to make the measurement result easy to see. Although the example of 5 divisions and 6 divisions has been described here, the frequency division method is not limited to this.

Next, the eighth embodiment will be described with reference to FIGS. 25, 26, 27 and 28. In this example, as shown in FIG. 25 (a), the radio wave measuring equipment (site) 143, which is a radio wave measuring device, includes an ascending / descending antenna A 57 ₁ and an ascending / descending antenna B 57 ₂ that receive the electric waves emitted by the EUT 35. The ascendable antenna 57 ₁ ,
57 ₂ displays spectrum analysis means A 58 ₁ and spectrum analysis means B 58 ₂ for displaying the analysis results together with spectrum analysis of the radio waves respectively received, and the images of the analyzed spectrum waveforms or other items. A graphic plotter A51 ₁ and a graphic plotter B51 _{2 including} a plotter and a buffer for recording, the rotating means 56, the ascending / descending antenna A57 ₁ , the ascending / descending antenna B57 ₂ , the spectrum analyzing means 58 ₁ , 58 ₂ , and the aforesaid It has a personal computer (including a program) 152 for performing various controls on the graphic plotters 51 ₁ and 51 ₂ .

The turn controller 49, antenna elevating controllers 50 ₁ and 50 ₂ , graphic plotters 51 ₁ and 51 ₂ , personal computer 152 and spectrum analyzers 53 ₁ and 53 ₂ are interconnected by a GPIB interface cable 55.

Further, the ascendable / descendable antennas 57 ₁ and 5
7 ₂ includes antennas 40 ₁ and 40 ₂ and the antenna 40
Supports 41 ₁ and 41 that support ₁ and 40 _{2 so} that they can move up and down
₂ and drive cables 48 ₁ and 48 ₂ that connect between the antenna lifts 42 that move the antennas 40 ₁ and 40 ₂ up and down.

Further, the spectrum analysis means 57₁,
57₂Is the preamplifier 54₁, 54 ₂And the spectrum
・ Analyzer 53₁, 53₂And the preamplifier 5
4₁, 54₂And antenna 40₁, 40₂Connect between each
Antenna cable 46₁, 46₂Consists of.

The graphic plotter A51 ₁ comprises a plotter A and a buffer A, and the graphic plotter B51 ₂ comprises a plotter B and a buffer B. The E
Each measurement distance between the UT 35 and the antenna A40 ₁ and the antenna B40 ₂ is set to, for example, 3 m or 10 m, and the height of the non-conductive base 36 is set to, for example, 1 to 4 m.

Note that, in the figure, the components having the same reference numerals as those in FIG. 13 have already been described in FIG. 13, and therefore the description thereof will be omitted here. FIG. 25B shows a view seen from above the ground plane.

In the personal computer 152 according to this embodiment,
As described in the second invention and the second embodiment, the limit line auxiliary display means for displaying the limit line on the screen which is not used for the measurement among the plural screens held by the spectrum analysis means 58 ₁ and 58 _2. As described in 17, the fourth invention and the fourth embodiment, when the chart data is lost due to the spectrum data accumulating means 20 for accumulating the measured spectrum data for each measurement and the paper jam or the like, As described in the seventh invention and the seventh embodiment, the re-recording instructing means 21 for instructing the re-recording by reading the data from the spectrum data accumulating means 20, the plurality of screens are combined, the title, the condition, etc. As described in the eighth invention, the horizontal polarization radio wave and the vertical polarization radio wave are measured in parallel so that the images are recorded in one place. And it has a program that is a means corresponding to a polarization parallel measurement instructing means 25 for instructing to so that.

Next, the processing operation of the eighth embodiment will be described with reference to FIGS. 26 and 27. In the process according to the present embodiment, when the measurement is started in step S162 instead of the re-plotting in step S16O, the process proceeds to step S163, and the means corresponding to the multiple screen combination recording instruction means 24 of the personal computer 152 is , Initialize the plot position. In step S164, sends the limit line of Hor in the buffer of the plotter A51 _1, the vertical axis unit, the horizontal axis unit lattice (scale), title, data of conditions.

At step S165, in the buffer B of the plotter B, the limit line of Ver, the vertical axis unit, the horizontal axis unit,
Sends data such as grid (scale), title, conditions, etc. In step S166, the antenna lift controller A
To set the antenna A to Hor.

In step S167, the antenna lift table controller B is controlled to set the antenna B to Ver.
In step S168, the antenna elevator controller A is controlled to set the height of the antenna A to a height suitable for the frequency n of Hor.

In step S169, the antenna elevator controller B is controlled to set the height of the antenna B to a height suitable for the frequency n of Ver. In step S170, the measurement frequency of n is set in the spectrum analyzer A,
Clear the screen. In step S171, the limit line of n is displayed on the screen of the spectrum analyzer A.

In step S172, the screen of the spectrum analyzer A is set to hold the maximum value (data write state). In step S173, the spectrum analyzer B is set to the measurement frequency of n, and the screen is cleared.

Via connector 1 step S17 in FIG.
Proceed to step 4 and display the limit line of n on the screen of spectrum analyzer B. In step S175, the screen of spectrum analyzer B is set to hold the maximum value and the data writing state is set.

At this time, the radio wave received by the antenna A is input to the spectrum analyzer A, and the radio wave received by the antenna B is input to the spectrum analyzer B after being amplified by the preamplifiers A and B, respectively. Step S17
At 6, the turntable 59 of the rotating means is rotated. The turntable 59 is rotated 360 ° in step S177.
When it is determined that the rotation is completed, step S17
8, the turntable 59 is stopped.

In step S179, the data writing of the spectrum analyzer A53 ₁ is stopped. In step S180, the data writing of the spectrum analyzer B53 ₂ is stopped. In step S181, the spectrum
The personal computer reads the spectrum data of the analyzer A53 ₁ and stores it in the memory area (Hor) n (hard disk or the like). In step S182, the data of the spectrum analyzer B53 ₂ is read by the personal computer and stored in the memory area (Ver) of n (hard disk or the like).

At step S183, the n coordinate is designated as the plot coordinate for sending the n Hor spectrum data to the plotter A buffer. V of n in step S184
The plot coordinates for sending the spectrum data of er to the buffer of plotter B specify the position of n. Step S
At 185, n is incremented.

If n is 6 in step S186,
It returns to step S16O of FIG. 26, and it is judged whether it is a re-plot. Unless n reaches 6 in step S186, the process returns to step S168 to control the antenna elevator controller A to set the height of the antenna A to a height suitable for the frequency n of Hor, and then to step S168. The processing of S168 to step S186 will be repeated.

Here, with the biconical antenna, 30M
When measuring Hz to 300 MHz, divide the frequency as follows. n = 1; 30 MHz to 80 MHz n = 2: 80 MHz to 100 MHz n = 3: 100 MHz to 150 MHz n = 4: 150 MHz to 200 MHz n = 5: 200 MHz to 250 MHz n = 6: 250 MHz to 300 MHz

With a log periodic antenna, 200M
When measuring Hz to 1000 MHz, the frequency is divided as follows. n = 1: 200 MHz to 300 MHz n = 2: 300 MHz to 400 MHz n = 3: 400 MHz to 500 MHz n = 4: 500 MHz to 600 MHz n = 5: 600 MHz to 800 MHz n = 6: 800 MHz to 1000 MHz

That is, according to the control method shown in FIGS. 26 and 27, the turntable is set to 1 for each screen with the antenna A set to Hor and the antenna B set to Ver.
Rotate the spectrum of the radio waves measured by antenna A.
By inputting the radio waves measured by the antenna B to the analyzer A and the spectrum analyzer B, the H
It is possible to measure or and Ver in parallel.

The input buffer of each plotter instantaneously holds the data transmitted from the personal computer and immediately opens the personal computer. While the personal computer is performing the following control, the plotter plots the data accumulated in the buffer one after another. Plotter A is Hor, Plotter B is Ve
plot r.

FIG. 28 shows the chart thus obtained.
Shown in 28A is a chart obtained by attaching an antenna for measuring 30 MHz to 300 MHz to each of the antenna A and the antenna B, and FIG.
(B) shows antennas A and B with 200M each
It is a chart obtained by attaching an antenna for measuring Hz to 1000 MHz.

In FIGS. 28 (a) and 28 (b), numbers represent plot positions, which are represented by n in FIGS. 26 and 27.
In addition, although the case where the antenna A is set to Hor and the antenna B is set to Ver is described here, they may be reversed. Moreover, the measurement frequency range is 30 MHz to 300 MHz.
In the above, the case of 200 MHz to 1000 MHz was described, but the measurement frequency range is not limited to this.

As described above, in the eighth embodiment, in addition to the effects described in the second, fourth and seventh embodiments, the antenna A is set to Hor and the antenna B is Ve.
1 turntable for each screen when set to r
Rotate the spectrum of the radio waves measured by antenna A.
By inputting into the analyzer A and then into the radio spectrum analyzer B measured by the antenna B, the Hor
And Ver can be measured in parallel. As a result, the measurement time can be reduced to half or less as compared with the conventional measurement control.

FIG. 29 shows the radio wave measuring equipment according to the ninth to twelfth embodiments.

As shown in FIGS. 13A and 13B, the radio wave measuring equipment 243 according to the present embodiment is different from the eighth embodiment in that it is different from the antennas in the ascendable / descendable antennas 157 ₁ and 157 _2. A biconical antenna 140 ₁ and a log periodic antenna 140 ₂ are provided. In addition, in FIG. 26, those denoted by the same reference numerals as those in FIG. 26 have already been described in FIG. 26 or FIG. 13, and therefore description thereof is omitted here.

Next, FIG. 29 and FIG. 3 for the ninth embodiment.
0, FIG. 31, FIG. 32, and FIG. 33 will be described. FIG. 29B shows a view seen from above the brand plane. As described in the second invention and the second embodiment, the personal computer 252 according to the present embodiment is arranged on the screen not used for measurement among the plurality of screens held by the spectrum analysis means 58 ₁ and 58 _2. Limit line auxiliary display means 17 for displaying limit lines, and spectrum data storage means 2 for storing measured spectrum data for each measurement as described in the fourth invention and the fourth embodiment.
0, and when the chart paper is lost due to a paper jam or the like, the re-recording instruction means 21 for reading the data from the spectrum data storage means 20 and instructing the re-recording, the seventh invention and the seventh embodiment. As described above, a plurality of screen combination recording instruction means 24 for recording an image so that a plurality of screens are combined and the titles, conditions, etc. are gathered in one place, and as described in the ninth invention, the biconical antenna 157 ₁
In parallel with the horizontal polarization obtained from the above and the vertical polarization obtained from the log periodic antenna 157 _2, the vertical polarization obtained from the biconical antenna 157 ₁ and the log periodic antenna 157 _2.
Each polarization sequential parallel measurement instruction means 26 for instructing to sequentially perform parallel measurements on the horizontally polarized waves obtained from the above, and as described in the tenth invention, a predetermined value without replacing each antenna. It has frequency continuous measurement instructing means 27 for instructing to continuously measure the frequency range.

Next, the processing operation according to the ninth embodiment will be described with reference to FIGS. 30, 31 and 32. If it is determined in step S190 that the plot is not re-plotting, the process proceeds to step S192 to determine whether or not measurement is started. When the measurement is started, the process proceeds to step S193, and the plot position is initialized. Then, in step S194, the limit line of Hor, the vertical axis unit,
Data such as unit of horizontal axis, grid (scale), title, condition, etc. are transmitted.

In step S195, data such as Ver limit line, vertical axis, horizontal axis unit, lattice (scale), title, condition, etc. is sent to the buffer of the plotter B. The spectrum analyzer A is set to H in step S197.
(N) Set the measurement frequency of B and clear the screen. In step S198, the limit line of H (n) is displayed on the screen of spectrum analyzer A.

In step S199, the screen of spectrum analyzer A is set to hold the maximum value (data write state). In step S200, the antenna elevator controller B is controlled to set the antenna B to Ver, and the antenna height is set to a height suitable for the frequency band n + 3.

In step S201, the spectrum analyzer B is set to the measurement frequency of V (n + 3) L and the screen is cleared. In step S202, the limit line of V (n + 3) L is displayed on the screen of spectrum analyzer B.

In step S203, the screen of spectrum analyzer B is set to hold the maximum value (in the data writing state). Through the connector 4, step S20 of FIG.
Proceed to 4 to rotate the turntable, step S205
When 360 ° rotation is completed in step S206, step S206
Stop the rotation of the turntable with.

In step S207, the data writing of spectrum analyzer A is stopped. In step S208, the data writing of spectrum analyzer B is stopped. In step S209, the spectrum data of the spectrum analyzer A is read by the personal computer and stored in the memory area of H (n) B (hard disk or the like). Step S
At 210, the spectrum data of spectrum analyzer B is read by the personal computer and stored in the memory area of V (n + 3) L (hard disk or the like).

In step S211, the spectrum data of H (n) B is sent to the buffer of plotter A. The plot coordinates specify the position of n. In step S212,
The spectrum data of V (n + 3) L is sent to the buffer of the plotter B. The plot coordinates specify the position of n + 3.

The input buffer of the plotter instantaneously holds the data transmitted from the personal computer and immediately opens the personal computer. While the personal computer is performing the following control, the plotter plots the data accumulated in the buffer one after another. Plotter A plots Hor and plotter B plots Ver.

In step S213, n is incremented by n = n + 1. In step S214, it is determined whether n is greater than or equal to n. If n is greater than or equal to 4, the process proceeds to step S215, the plot position is initialized, and n = 1. In step S216, the antenna elevator controller A is controlled to set the antenna A to Ver and the antenna height is set to a height suitable for the frequency band n.

In step S217, the spectrum analyzer A is set to the measurement frequency of H (n + 3) L and the screen is cleared. In step S218, the limit line of H (n + 3) L is displayed on the screen of the spectrum analyzer A. In step S219, the screen of spectrum analyzer A is set to hold the maximum value (data writing state).

After that, through the connector 7, the process proceeds to step S220 in FIG. In step S221, the antenna elevator controller B is controlled to set the antenna B to Hor, and the antenna height is set to a height suitable for the frequency band n + 3. In step S221, the spectrum analyzer B is set to the measurement frequency of V (n) B and the screen is cleared.

At step S222, the limit line of V (n) B is displayed on the screen of spectrum analyzer B. In step S223, spectrum analyzer B
Set the screen to the maximum value hold and enter the data write state.

At step S224, the turntable is rotated. It is carried out until 360 ° rotation in step S225, and when 360 ° rotation is completed, step S2
At 26, stop the turntable. Step S227
Stops writing data to spectrum analyzer A. In step S228, the data writing of spectrum analyzer B is stopped.

In step S229, the data of the spectrum analyzer A is read by the personal computer and stored in the memory area of H (n + 3) L (hard disk or the like). In step S230, the spectrum data of spectrum analyzer B is read by the personal computer and stored in the memory area of V (n) B (hard disk or the like). Step S2
At 31, the spectrum data of H (n + 3) L is sent to the buffer of the plotter A. The plot coordinates specify the position of n + 3.

In step S232, the spectrum data of V (n) B is sent to the buffer of plotter B. The plot coordinates specify the position of n. In step S233,
Count up n (n = n + 1). Step S2
If n is less than 4, the process returns to step S216 of FIG. If n is 4 or more, the process returns to step S190 of FIG.

In this way, in the ninth embodiment, in addition to the effects obtained in the second, fourth, seventh and ninth embodiments, the antenna A is a biconical antenna and the antenna B is an antenna B. A log-periodic antenna is attached to the and the bi-conical antenna Hor and the log-periodic antenna Ver are measured in parallel, and the bi-conical antenna Ver and the log-periodic antenna H are measured.
By simultaneously measuring or and by plotting the chart of Hor and Ver at the same time, it is possible to continuously measure without exchanging the antenna, and H
It is possible to plot the charts of or and Ver at the same time. Therefore, the measurement time can be reduced to half or less as compared with the conventional measurement control. In addition, since it is not necessary to replace the antenna, fatigue of the measurer can be significantly reduced.

FIG. 33 is an example of a chart measured by this example. In FIG. 33, for example, the leftmost character of the character string “V4L” is V for Ver and H for He.
represents r. The numbers in the center represent plot positions and correspond to those described as n in the flowchart.

The character at the right end indicates that B is a biconical antenna and L is a log periodic antenna. Further, although the spectrum waveform is not displayed on each screen, the waveform as shown in FIG. 14 is actually plotted.

Here, the case where the biconical antenna is attached to the antenna A and the log periodic antenna is attached to the antenna B has been described, but they may be reversed. Also, with a biconical antenna, 30 MHz to 200 MHz
Measure MHz, and use log periodic antenna to measure 200
Although the case of measuring MHz to 1000 MHz has been described, the type of antenna and the range of measurement frequency are not limited to this.

Next, FIG. 29 and FIG. 3 for the tenth embodiment.
4, FIG. 35, FIG. 36, FIG. 37, FIG. 38, FIG. 39, and FIG. 40.

As described in the second invention and the second embodiment, the personal computer according to the present embodiment is limited to the screen not used for measurement among the plural screens held by the spectrum analysis means 58, 58. As described in the fourth invention and the fourth embodiment, the limit line auxiliary display means 17 for displaying lines, the spectrum data storage means 20 for storing the measured spectrum data for each measurement, and the paper jam etc. When the chart paper is lost, the re-recording instructing means 21 for reading out the data from the spectrum data accumulating means 20 and instructing the re-recording, as described in the seventh invention and the seventh embodiment, a plurality of data are recorded. A plurality of screen combination recording means 24 for recording images so that the screens are combined and the titles, conditions, etc. are gathered in one place. Parallel measurements of the horizontal polarization obtained from the antenna and the vertical polarization obtained from the log periodic antenna, and the vertical polarization obtained from the biconical antenna and obtained from the log periodic antenna. Polarization sequential parallel measurement instructing means 26 for instructing to sequentially perform parallel measurements on horizontal polarized waves, as described in the tenth aspect of the invention, the antennas are not exchanged and a predetermined frequency range is continuously applied. As described in the eleventh aspect of the present invention, the continuous frequency measurement instructing means 27 for instructing to perform measurement is performed. The height of one of the antennas is changed in a plurality of steps and the rotating means is rotated in the plurality of steps. As described in the measurement instructing means 28 and the twelfth invention, the measurement frequency is narrowed down to a practical range, and the horizontal axis of the recording result is known. Having a frequency division limiting means 29 for dividing the frequency so that had a unit.

Next, the operation processing according to the tenth embodiment will be described with reference to FIGS. Step S240
If it is not re-plot, measurement is started in step S242. In step S243, the plot position is initialized.

In step S244, the control flag is initialized to R = 0 and P = 0. In step S245, data such as Hor's limit line, vertical axis unit, horizontal axis unit, lattice (scale), title, condition, etc. are sent to the buffer of the plotter A. In step S246, the limit line of Ver, the unit of vertical axis, the unit of horizontal axis,
Sends data such as grid (scale), title, and conditions.

In step S247, the antenna lift controller A is controlled to set the antenna A to Hor.
In step S248, the antenna lift controller B is controlled to set the antenna B to Ver.

In step S249, the height of the antenna A is controlled to the frequency H by controlling the antenna elevator controller A.
(N) Set to a height suitable for B. In step S250, the spectrum analyzer A is set to the measurement frequency of H (n) B and the screen is cleared. In step S251, the limit line of H (n) B is displayed on the screen of spectrum analyzer A.

At step S252, the screen of spectrum analyzer A is set to hold the maximum value and put into the data writing state. In step S253, it is determined whether R = 0. If R = 0, the process proceeds to step S254 to control the antenna lift controller B to set the height of the antenna B to the height of the first rotation of the frequency V (n-4-RP) L. .

In step S255, the spectrum analyzer B is set to a frequency of V (n + 4-RP) L and the screen is cleared. Through the connector 10, the process proceeds to step S256 in FIG. 35, and the limit line of V (n-4-RP) L is displayed on the screen of the spectrum analyzer B.

In step S257, the screen of spectrum analyzer B is set to hold the maximum value, and the data writing state is set. In step S260, it is determined whether P = 0. If P = 0, the process proceeds to step S261 and P
Without setting 0 to step S263, the turntable is rotated.

If P = 0 is not satisfied, P = 0 is set and the process proceeds to step S263. In step S263, the turntable is rotated, and it is determined in step S264 whether the 360 ° rotation is completed. When the rotation of 360 ° is completed, the process proceeds to step S265 and the rotation of the turntable is stopped.

In step S266, the data writing of spectrum analyzer A is stopped. Step S267
Then, the data writing of the spectrum analyzer B is stopped. In step S268, the spectrum data of the spectrum analyzer A is read on the personal computer and H
(N) Store in memory area B (hard disk or the like). In step S269, the spectrum data of H (n) is sent to the buffer of the plotter A. The plot coordinates specify the position of n.

Via the connector 14, step S2 of FIG.
Proceeding to 70, it is determined whether R = 0. If R = 0, the process proceeds to step S271 to read the spectrum data of the spectrum analyzer B into the personal computer and store it in the memory area of V (n + 3-R + P) L (hard disk or the like).

In step S272, V (n + 3-R +
P) L spectrum data is sent to the plotter B buffer. At that time, the plot coordinates specify the position of n + 3-R + P. In step S273, R = 0 is set,
In step S275, n = n + 1 is set. If n has reached 5, the process proceeds to step S277 and the plot position is initialized to n = 1.

In step S278, the control flag is initialized to R = 0 and P = 0. In step S279, the antenna elevator controller A is controlled to move the antenna A to Ve.
r is set, and in step S280, the antenna elevator controller B is controlled to set the antenna B to Hor.

In step S281, the height of the antenna A is controlled to the frequency V by controlling the antenna lift controller A.
(N) Set to a height suitable for B. Step S282
Then, set the measurement frequency of V (n) B in spectrum analyzer A and clear the screen.

In step S283, the limit line of V (n) B is displayed on the screen of spectrum analyzer A. In step S284, the spectrum analyzer A
Set the screen to the maximum value hold and enter the data write state.

Through the connector 15, step S2 in FIG.
In step 85, it is determined whether R = 0. If R = 0, the process proceeds to step S286 to control the antenna elevator controller B to adjust the height of the antenna B to the frequency H (n + 4−).
RP) Set to the height of the first rotation of L.

In step S287, the frequency of H (n + 4-RP) L is set in the spectrum analyzer B and the screen is cleared. In step S288. Display the limit line of H (n + 4-RP) L on the screen of spectrum analyzer B.

[0206] In step S289, the spectrum analyzer B screen is set to hold the maximum value and put in a data write state. Then, through the connector (B), step S295
Proceed to. If R = 0 is not true in step S285,
In step S290, the height of the antenna B is controlled to the frequency H (n + 4-R) by controlling the antenna lift controller B.
-P) Set to the height of the second rotation of L.

[0207] In step S291, the spectrum analyzer B screen is set to hold the maximum value and put in a data write state. If P = 0 is not found in step S292,
In step S294, P = 0 is set. When P = 0, in step S293, P = P + 1 is set and step S is performed.
Proceed to 295.

In step S295, the turntable is rotated. If it is determined in step S296 that it has rotated 360 °, the flow advances to step S297 to stop the turntable. In step S298, the data writing of the spectrum analyzer A is stopped.

[0209] In step S299, the data writing of the spectrum analyzer B is stopped. 38, the spectrum data of the spectrum analyzer A is read by the personal computer and stored in the memory area of V (n) B (a hard disk or the like).

[0210] In step S301, the spectrum data of V (n) B is sent to the buffer of plotter B. The plot coordinates specify the position of n. In step S302, it is determined whether R = 0.

If R = 0 is not satisfied, step S303.
Then, the spectrum data of the spectrum analyzer B is read by the personal computer and stored in the memory area of H (n + 3-R + P) L (hard disk etc.).

At step S304, H (1n + 3-R-
P) The plot coordinates for sending the spectrum data of L to the buffer of the plotter A specify the position of n + 3-R + P. In step S305, R = 0 is set, n = n + 1 is set, and the process proceeds to step S308. Also, step S302
If R = 0, the process proceeds to step S306 and R = R +
After setting to 1, in step S307, n = n + 1 is set, and the process proceeds to step S308 to determine whether n = 5.

In the case of n = 5, via the connector 13,
It returns to step S240 of FIG. If n = 5 is not satisfied, the process returns to step S281 of FIG.

As described above, in this embodiment, a biconical antenna for measuring 200 MHz or less is attached to the antenna A and set to Hor, and an antenna B is a log periodic for measuring 200 MHz or more. Attach the antenna and set it to Ver. While rotating the turntable twice, measure two screens of Hor by antenna A and spectrum analyzer A, and at the same time, measure one screen of Ver by antenna B and spectrum analyzer B. The temperature is changed in two steps and the measurement is performed twice. Further, the plotter B plots the measurement results of Ver for antenna A one after another.

Therefore, in the present embodiment, in addition to the effects obtained in the second, fourth, seventh and ninth embodiments, the antenna height direction At a frequency of 200 MHz or more, where the directivity is strong, the height of the antenna is changed in two steps and the turntable is rotated twice to perform measurement, so that measurement omission is reduced. Also, when the turntable is rotated for the first time, the height of the antenna is set to the height at which the radio waves are most easily received in the measurement frequency band, and at the time of the second rotation, the height at which the radio waves are next received is set for measurement. .

Since the directivity in the height direction of the antenna is not strong at a low frequency of 200 MHz or less, the turntable is rotated once with priority on the measurement time. That is, the measurement time delay due to excessive measurement is prevented by measuring only one height at a low frequency.

Further, by setting the two antennas to Hor and Ver respectively for measurement, and further setting them to Ver and Hor for measurement, and plotting the charts of Hor and Ver on the plotters for exclusive use respectively, And V
er chart can be obtained at the same time.

Therefore, in this embodiment,
It is possible to measure four screens of 200 MHz or less with one turntable rotation each and two screens of 200 MHz or more with two turntable rotations each and plot the Hor and Ver charts simultaneously. That is, the turntable completes all measurements in a total of 8 revolutions.

Further, the measurement frequency range is originally 30 MHz to
1000MHz, but this is practical 30MHz ~
By narrowing down to 500 MHz, one screen is enlarged to make it easier to see. In addition, the horizontal axis 1 scale of the screen is 5MHz,
By setting a sharp frequency unit such as 10MHz or 20MHz, a certain point on the screen is MH
It is possible to easily discriminate whether it is z or a plurality of points at every MHz.

Measurement distance 10 m thus obtained
39 shows an example of setting the antenna height in the case of measurement in FIG. 4, and FIG. 4 shows the measurement results obtained by changing the antenna height.
0 (a) and (b).

In FIG. 40, for example, the character at the left end of the character string "V4L" is V for Ver and H for Her. The numbers in the center represent plot positions and correspond to those described as n in the flowchart. The letter at the right end indicates that B is a biconical antenna and L is a log periodic antenna.

Although the spectrum waveform is not displayed on each screen, the waveform shown in FIG. 14 is actually plotted. In the above example, the case where the biconical antenna is attached to the antenna A and the log periodic antenna is attached to the antenna B has been described, but they may be reversed.

[0223] Also, with a biconical antenna, 30 MHz
Up to 200 MHz is measured and the log periodic antenna measures 200 MHz to 500 MHz, but the type of antenna and the range of measurement frequency are not limited to this. Further, the example in which the turntable is rotated at most twice per screen has been described, but it may be three or more times.

According to the tenth embodiment described above, 10
Although it is not 0%, it is possible to prevent measurement leakage with respect to the directivity in the height direction of the antenna with a fairly high probability, obtain an easy-to-read chart in a short time, and greatly improve the measurement efficiency. Further, the measurement time can be reduced to half or less as compared with the conventional measurement control. In addition, the replacement of the antenna is not required, and the fatigue of the measurer can be greatly reduced.

[0225]

As described above, according to the first invention,
Items other than the spectrum waveform are instructed to be recorded while the device under test is rotated. Therefore,
The measurement time can be shortened as compared with the conventional case. Therefore, when performing a large amount of measurement, the number of measurement days will be significantly reduced.

In the second invention, limit line auxiliary display instructing means for displaying a limit line on a screen which is not used for measurement among a plurality of screens held by the spectrum analyzing means is provided.

Therefore, the operator can easily check how much the measured value has a margin with respect to the limit line at the same time as performing the measurement, and can move to the next measurement preparation without waiting for the completion of recording. Greatly improves efficiency.

In the third invention, the data writing start / stop means for stopping the data writing to the spectrum analysis means is provided immediately after the rotation of the rotation means is started. Therefore, since the data writing to the spectrum analysis means is started immediately after the rotation means starts the rotation and the data writing to the spectrum analysis means is stopped immediately before the rotation means is stopped, the impact of the rotation start and stop by the rotation means. Even if a radio wave that should not originally be generated is radiated from the device under test due to the above, the spectrum analysis means does not measure this, and highly accurate measurement is possible.

In the fourth invention, the measured spectrum
Provided are spectrum data storage means for storing data for each measurement, and rerecording instruction means for reading out data from the spectrum data storage means and instructing rerecording when the chart paper is lost due to a paper jam or the like. ing. Therefore, even if the chart paper is lost due to a paper jam or the like, re-measurement is unnecessary, and quick and efficient radio wave measurement can be performed.

In the fifth aspect of the invention, the dot marker waveform is displayed on the waveform of the spectrum analysis means on the waveform displayed on the screen, and is moved to the upper end of the screen to read the waveform data as the upper end value of the screen. An upper display means is provided.

Therefore, when a device having an incomplete GPIB interface is combined, for example, the data read command may not be able to be read because the screen data has a numerical value of 0 to 1000, that is, a four-digit numerical value. Since the (REF) value is a two-digit number, it can be read with a very high probability.

In the sixth aspect of the invention, the limit line value is converted, but the measured value is not converted, but limit line value conversion means for recording an image is provided. Therefore, according to the present invention, the dark noise level at the time of non-measurement becomes constant, so that even if the broadband noise occurs and the baize rises, it can be easily identified. Also,
Since the recorded chart paper and the screen of the spectrum analysis means can be compared, the measurement results before and after the radio wave countermeasure can be easily compared, and the measurement efficiency is significantly improved.

In the seventh invention, a plurality of screen combination recording instruction means for recording images are provided so that a plurality of screens are combined and the titles, conditions, etc. are collected in one place. Therefore, according to the present invention, since unnecessary recording is eliminated, it becomes possible to measure a plurality of screens more than before in a time substantially similar to the time required to measure a plurality of screens in the past. The measurement time can be shortened.

In addition, since a wider frequency range can be displayed on one sheet of paper as compared with the conventional case, the measurement efficiency is improved and the limit line of each screen is connected to make the measurement result easy to see.

Further, in the eighth invention, a plurality of vertically movable antennas, a plurality of spectrum analysis means for respectively performing spectrum analysis of received radio waves, and analyzed spectrum waveforms in the radio wave measurement facility, or It has a plurality of image recording means for recording the image of other items, and is provided with a polarization parallel measurement instructing means for instructing to measure the horizontally polarized wave and the vertically polarized wave in parallel. . Therefore, according to the present invention, the radio waves having different polarizations can be measured in parallel, so that the measurement time can be reduced to half or less as compared with the conventional measurement control.

In a ninth aspect of the present invention, an ascending / descending biconical antenna or an ascending / descending log periodic antenna and a plurality of spectrum analyzing means for respectively performing spectrum analysis of received radio waves are analyzed in the radio wave measuring equipment. It has a plurality of image recording means for recording the image of the spectrum waveform or other items, and the parallel polarization of the horizontal polarization obtained from the biconical antenna and the vertical polarization obtained from the log periodic antenna. Each polarization sequential parallel measurement instruction means for instructing to sequentially perform parallel measurement of measurement, vertical polarization obtained from the biconical antenna and horizontal polarization obtained from the log periodic antenna is provided. .

Therefore, radio waves can be continuously measured for each polarized wave without exchanging the antenna, and the measurement time can be reduced to half or less. In addition, since it is not necessary to replace the antenna, fatigue of the measurer can be significantly reduced.

In a tenth aspect of the present invention, an ascending / descending biconical antenna or an ascending / descending log periodic antenna, and a plurality of spectrum analyzing means for respectively performing spectrum analysis of received radio waves are analyzed in the radio wave measuring equipment. A frequency continuous measuring finger which has a plurality of image recording means for recording the image of the spectrum waveform or other items, and which instructs to continuously measure a predetermined frequency range without replacing each antenna. Means are provided. Therefore, it is not necessary to replace the antenna according to the frequency, and it is possible to prevent delay of the measurement time and prevent fatigue of the measurer.

The eleventh aspect of the present invention is to install the radio wave measuring equipment in
In addition to having a plurality of vertically movable antennas, a plurality of spectrum analysis means for respectively performing spectrum analysis of received radio waves, and a plurality of image recording means for recording the image of the analyzed spectrum waveform or other items , A multi-step measurement instructing means for changing one of the heights of the antenna in a plurality of steps and rotating the rotating means by the plurality of steps.

Therefore, in the high frequency range, the directivity in the antenna height direction is strong, and the height of the antenna is changed in a plurality of steps, and the rotation of the rotating means is performed a plurality of times for measurement, thereby reducing measurement omissions. can do.
In the low frequency range, the directivity in the height direction of the antenna is not strong. Therefore, by giving priority to the measurement time and rotating the rotating means once, it is possible to measure only one height. Prevents measurement time delay due to measurement.

The twelfth aspect of the present invention is to install the radio wave measuring facility in
In addition to having a plurality of vertically movable antennas, a plurality of spectrum analysis means for respectively performing spectrum analysis of received radio waves, and a plurality of image recording means for recording the image of the analyzed spectrum waveform or other items The measurement frequency is limited to a practical range, and the frequency division limiting means is provided for dividing the frequency so that the horizontal axis of the recording result is an easily recognizable unit.

Therefore, by narrowing down the frequency range, one screen is enlarged for easy viewing. Also,
A certain point on the screen can be easily identified by setting the horizontal axis of the screen in sharp frequency units.

[Brief description of drawings]

FIG. 1 is a block diagram of the principle of the first invention.

FIG. 2 is a block diagram of the principle of the second invention.

FIG. 3 is a block diagram showing the principle of the third invention.

FIG. 4 is a block diagram of the principle of the fourth invention.

FIG. 5 is a block diagram of the principle of the fifth invention.

FIG. 6 is a block diagram showing the principle of the sixth invention.

FIG. 7 is a block diagram showing the principle of the seventh invention.

FIG. 8 is a block diagram showing the principle of the eighth invention.

FIG. 9 is a block diagram of the principle of the ninth invention.

FIG. 10 is a block diagram showing the principle of the tenth invention.

FIG. 11 is a block diagram of the principle of the eleventh invention.

FIG. 12 is a block diagram of the principle of the twelfth invention.

FIG. 13 is a diagram showing radio wave measuring equipment according to first to seventh embodiments.

FIG. 14 is a diagram showing an example of a spectrum chart according to the embodiment.

FIG. 15 is a process flow chart according to the first embodiment.

FIG. 16 is a processing flowchart according to the second embodiment.

FIG. 17 is a processing flowchart according to the third embodiment.

FIG. 18 is a processing flowchart according to the fourth embodiment.

FIG. 19 is a processing flowchart according to the fifth embodiment.

FIG. 20 is a diagram showing an example of a chart according to a conventional example and an example of a chart according to a sixth embodiment.

FIG. 21 is a processing flowchart according to the seventh embodiment (divided into five).

FIG. 22 is a diagram showing an example of a four-screen chart according to the conventional example (a) and a five-division chart according to the seventh embodiment (b).

FIG. 23 is a processing flowchart (six divisions) according to the seventh embodiment.

FIG. 24 is a diagram showing an example of a 6-division chart of the seventh embodiment.

FIG. 25 is a diagram showing a radio wave measurement facility according to an eighth embodiment.

FIG. 26 is a processing flowchart (1) according to the eighth embodiment.

FIG. 27 is a processing flowchart (8) according to the eighth embodiment.

FIG. 28 is a diagram showing an example of a Hor chart and a Ver chart according to the eighth embodiment.

FIG. 29 is a diagram showing radio wave measuring equipment according to ninth to twelfth embodiments.

FIG. 30 is a processing flowchart (1) according to the ninth embodiment.

FIG. 31 is a processing flowchart (2) according to the ninth embodiment.

FIG. 32 is a processing flowchart (3) according to the ninth embodiment.

FIG. 33 is a diagram showing an example of a chart of Hor and Ver according to the ninth embodiment.

FIG. 34 is a processing flowchart (1) according to the tenth embodiment.

FIG. 35 is a processing flowchart (2) according to the tenth embodiment.

FIG. 36 is a processing flowchart (3) according to the tenth embodiment.

FIG. 37 is a processing flowchart (4) according to the tenth embodiment.

FIG. 38 is a processing flowchart (5) according to the tenth embodiment.

FIG. 39 is a diagram showing an example of setting the antenna height according to the tenth embodiment.

FIG. 40 is a view showing a chart of Hor and Ver according to the tenth embodiment.

FIG. 41 is a block diagram according to a conventional example.

FIG. 42 is a control flowchart of the radio wave measurement system according to the conventional example.

FIG. 43 is a flowchart of spectrum waveform reading control according to a conventional example.

[Explanation of reference numerals] 10 (35) ... Device under test (EUT) 11, 56 ... Rotating means 12, 32 ₁ , 32 ₂ , 33 ₁ , 33 ₂ , 57 ₁ , 57
₂ , 157 ₁ , 157 ₂ ... Elevating antennas 13, 13 ₁ , 13 ₂ ... Spectrum analysis means 14, 141 ₁ , 14 ₂ ... Image recording means 15 (52, 152, 252) ... Control means (personal computer) 16 ... Rotation Time recording means 17 ... Limit line auxiliary display instruction means 18 ₁ to 18 _n ... Screen 19 ... Data writing start / stop means 20 ... Spectrum data analysis means 21 ... Rerecording instruction means 22 ... Dot marker waveform display means 23 ... Limit Line value conversion means 24 ... Plural screen combination recording instruction means 25 ... Polarization parallel measurement instruction means 26 ... Polarization sequential parallel measurement instruction means 27 ... Frequency continuous measurement maintaining means 28 ... Multi-step measurement instruction means 29 ... Frequency division limitation means

Claims (12)

[Claims] 1. When measuring a radio wave radiated by a device under test such as an information processing device, a rotating means for rotating the device under test, an elevation antenna capable of receiving the radio wave radiated by the device under test, Spectrum analysis means for displaying the analysis result together with analysis of the spectrum of the radio wave received by the ascendable antenna, and image recording means for recording the image of the analyzed spectrum waveform or other items, The rotating means, the ascendable / descendable antenna, the spectrum analyzing means, and a control means for performing various controls on the image recording means. A radio wave measuring device provided with a rotation recording instruction means for instructing to record while rotating. 2. When measuring a radio wave radiated by a device under test such as an information processing device, a rotating means for rotating the device under test, an elevation antenna capable of receiving the radio wave radiated by the device under test, Spectrum analysis means for displaying the analysis result together with analysis of the spectrum of the radio wave received by the ascendable / descendable antenna, and image recording means for recording the image of the analyzed spectrum waveform or other various items And a radio wave measuring device, wherein the control means is provided with limit line auxiliary display instruction means for displaying a limit line on a screen which is not used for measurement among a plurality of screens held by the spectrum analysis means. 3. When measuring a radio wave radiated by a device under test, a rotating means for rotating the device under test, a vertically movable antenna for receiving a radio wave radiated by the device under test, and a reception by the vertically movable antenna. A spectrum analysis means for displaying the analysis result together with the analysis of the spectrum of the radio wave analyzed, an image recording means for recording the image of the analyzed spectrum waveform or various other items, the rotating means, A control means for performing various controls on the vertically movable antenna, the spectrum analysis means, and the image recording means, wherein the control means writes data to the spectrum analysis means immediately after the rotation of the rotation means is started. Data writing to start the data writing and to stop writing the data to the spectrum analyzing means immediately before stopping the rotating means. A radio wave measuring device with a start / stop means. 4. When measuring a radio wave radiated by a device under test, a rotating means for rotating the device under test, a vertically movable antenna for receiving a radio wave radiated by the device under test, and a receiver for receiving the vertically movable antenna. A spectrum analysis means for displaying the analysis result together with the analysis of the spectrum of the radio wave analyzed, an image recording means for recording the image of the analyzed spectrum waveform or various other items, the rotating means, A spectrum data accumulating means for accumulating measured spectrum data for each measurement, which has a control means for performing various controls on the up-and-down antenna, the spectrum analysis means, and the image recording means. When recording becomes impossible, read the data from the spectrum data storage means. Telecommunications measuring apparatus provided with a re-recording instruction means for instructing a re-recording Te. 5. A rotating means for rotating the device under test when measuring a radio wave radiated by the device under test, an ascendable antenna for receiving the wave radiated by the device under test, and reception by the antenna ascendable and descendable. A spectrum analysis means for displaying the analysis result together with the analysis of the spectrum of the radio wave that has been analyzed, an image recording means for recording the image of the analyzed spectrum waveform, or other various items, and the rotating means, It has a control means for performing various controls on the vertically movable antenna, the spectrum analysis means, and the image recording means, and the control means displays a dot marker on the waveform displayed on the screen of the spectrum analysis means. , Dot marker wave that moves this to the top of the screen and makes it possible to read the waveform data as the screen top value A radio wave measuring device equipped with on-screen display instruction means. 6. When measuring a radio wave radiated by the device under test, a rotating means for rotating the device under test, a vertically movable antenna for receiving the radio wave radiated by the device under test, and a reception by the vertically movable antenna. A spectrum analysis means for displaying the analysis result together with the analysis of the spectrum of the radio wave analyzed, an image recording means for recording the image of the analyzed spectrum waveform or various other items, the rotating means, It has a control means for performing various controls on the up-and-down antenna, the spectrum analysis means, and the image recording means, and the control means sets a limit line value based on a factor affecting radio wave measurement. A radio wave measurement device provided with limit line value conversion means for converting an image and recording an image without converting the measurement value. 7. A rotating means for rotating the device under test when measuring the radio wave emitted by the device under test, an elevation antenna for receiving the radio wave emitted by the device under test, and reception by the antenna elevating up and down. A spectrum analysis means for displaying the analysis result together with the analysis of the spectrum of the radio wave that has been analyzed, an image recording means for recording the image of the analyzed spectrum waveform, or other various items, and the rotating means, It has a control means for performing various controls on the ascendable / descendable antenna, the spectrum analysis means, and the image recording means, and the control means combines a plurality of screens, and titles, conditions, etc. are collected in one place As described above, a radio wave measuring apparatus provided with a plurality of screen combination other item batch recording instruction means for recording an image. 8. A rotating means for rotating the device under test when measuring a radio wave radiated by the device under test, and an ascendable / descendable antenna for receiving horizontally polarized waves of the radio wave radiated by the device under test, A vertically movable antenna that receives vertically polarized waves, an analysis of the spectrum of each radio wave received by each of the vertically movable antennas, and spectrum analysis means for displaying each analysis result, and each spectrum waveform analyzed, Or, for other various items, an image recording means for recording the image, and a control means for performing various controls for the rotating means, the lifting antenna, the spectrum analysis means, and the image recording means, The control means is a polarization parallel measurement instructing means for instructing to measure the horizontally polarized radio wave and the vertically polarized radio wave in parallel. Radio wave measuring device provided. 9. A biconical device that rotates a device under test when measuring radio waves radiated by the device under test, and receives a horizontally polarized wave or a vertically polarized wave out of the waves radiated by the device under test. An antenna and a log periodic antenna, and spectrum analysis means for respectively displaying the analysis result of each spectrum analysis of each radio wave received by each ascendable / descendable antenna, and each spectrum waveform analyzed, or other For each of the various items, there is an image recording means for recording the image, and a control means for performing various controls on the rotating means, the lifting antennas, the spectrum analyzing means, and the image recording means, Means are provided from the horizontally polarized wave obtained from the biconical antenna and the log periodic antenna. Of the vertical polarization obtained from the biconical antenna and the horizontal measurement obtained from the log periodic antenna. A radio wave measurement device having wave sequential parallel measurement instruction means. 10. A rotating unit that rotates the device under test when measuring a radio wave emitted by the device under test, a biconical antenna and a log periodic antenna for receiving the radio wave emitted by the device under test, The spectrum of each radio wave received by each ascendable antenna is analyzed and the spectrum analysis means for displaying each analysis result, and the image of each analyzed spectrum waveform or other various items are recorded. Image recording means, and the rotating means, the lifting antenna, the spectrum analysis means, and a control means for performing various controls for the image recording means, the control means, without replacing each antenna. A radio wave measuring instrument having frequency continuous measurement instructing means for instructing to continuously measure a predetermined frequency range. Stationary device. 11. When measuring a radio wave radiated by the device under test, a rotating means for rotating the device under test, two vertically movable antennas for receiving the radio wave radiated by the device under test, and each of the elevating and lowering devices. Image that records the spectrum of each radio wave received by the antenna, and the spectrum analysis means that displays each analysis result, and the analyzed spectrum waveform or other various items. It has a recording means, a control means for performing various controls on the rotating means, the elevating antenna, the spectrum analysis means, and the image recording means, and the control means has a plurality of heights of one of the antennas. A radio wave measuring device having a multi-step measurement instructing means that changes the rotation means a plurality of times while changing the rotation step. 12. When measuring a radio wave radiated by the device under test, a rotating means for rotating the device under test, an ascendable antenna for receiving a wave radiated by the device under test, and each of the ascendable and descendable antennas. Spectrum analysis means for analyzing the spectrum of each received radio wave and displaying each analysis result, and image recording means for recording the image of each analyzed spectrum waveform or other various items And a rotation means, the lifting antenna, the spectrum analysis means, and a control means for performing various controls for the image recording means, the control means, while narrowing the measurement frequency to a practical range, A radio wave measuring device having frequency division limiting means for dividing a frequency so that the horizontal axis of a recording result is in an easily recognizable unit.