JP2002014128A - Measuring instrument having function for displaying standard line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a line for standard line, which has been semi-fixed conventionally, to not only move vertically but also move to allow free compilation. SOLUTION: A marker display control means 43 displays a marker on a display screen. A nodal point storing means 65 stores nodal point data of the standard lines, corresponding to plural measuring items for a measured object. A measuring item setting means 64 sets one measuring item for the measured object and reads out the nodal data corresponding thereto from the storing means 65. The each nodal data, read from the setting means 64, is stored in a storage means 63. A nodal point changing means 66 updates the nodal data stored in the storage means 63 to update the nodal point indicated by a marker. A unit line preparing means 62 reads out the respective nodal point data stored in the storage means 63 and outputs information for connecting them in the order on the display screen to a standard line control means 42.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for measuring electric characteristics of an object to be measured, displaying the measured electric characteristics on a display screen, and comparing the characteristics with a standard line separately displayed on the display screen to judge the quality. The present invention relates to a measuring device having a standard line display function. In particular, the present invention relates to a measuring device having a standard line display function that can appropriately change a standard line.

[0002]

2. Description of the Related Art Mobile phones in mobile communication systems,
Measure and analyze the electrical characteristics of PHS, car phone, etc., for example, various characteristics of the modulated signal transmitted to and received from the base station, and confirm that the characteristics are within the allowable range of the predetermined standard There is a need to.

FIG. 5 is a block diagram showing a schematic configuration of a measuring apparatus. The measuring device includes a measuring unit 2 for measuring characteristics of the object 1 to be measured, a data processing unit 3 for processing measured data, a display control unit 4 for controlling display of the data-processed characteristics, , A control panel 6 for controlling operations of the measuring section 2, the data processing section 3, the display control section 4, and the display section 5 based on an operation instruction from the operation panel 7. It is composed of

FIG. 6 is a block diagram showing a schematic configuration of the measuring section 2 and shows an example of a reception frequency sweep type.
The mixer 24 mixes the output signal Sv of the VCO 23 controlled by the sweep control circuit 22 with the analysis target signal S, extracts a predetermined intermediate frequency component from the output of the mixer 24 by a filter 25, and logs this intermediate frequency signal as a logarithm. The signal is amplified by the amplifier 26, detected by the detection circuit 27, and the detected signal is sampled by the A / D converter 28 at a predetermined sampling period Ts, converted into a digital value, and output.

The sweep control circuit 22 receives the observation frequency range information and the sweep time information from the control unit 6 and
Is controlled so as to continuously and repeatedly sweep a range obtained by adding (or subtracting) the intermediate frequency to the observation frequency range at a time T corresponding to the sweep time information, so that the observation signal Sv The level of each frequency component within the frequency range is output as a series of spectrum data. Therefore, a series of T / Ts spectrum data is output from the A / D converter 28 while the reception frequency of the measurement unit 2 is swept once.

The data processing unit 3 performs necessary data processing on a series of input spectrum data and outputs the processed data to the display unit 5. The display unit 5 displays the signal level for each frequency, with the input characteristics being the frequency parameter on the horizontal axis.

In such a measuring device, the power versus time characteristics and frequency characteristics of a large number of objects to be measured having the same specifications are measured, and the measured power versus time characteristics and frequency characteristics are measured. In many cases, it is determined whether or not to pass a standard set for an object to be measured. For example, FIG. 7 is a diagram illustrating a power versus time standard for a PHS. In such a case, as shown in FIG.
The standard lines 5U and 5S are displayed in advance, and the quality of the measured characteristics is determined based on whether the measured characteristics fall within the standard lines 5U and 5S.

The standard lines 5U and 5S follow the characteristics of the DUT 1 and have a shape connected by a number of unit lines 5a as shown in FIG. By superimposing and displaying the standard lines 5U and 5S on the characteristics as described above, the measurer (operator) can easily determine the quality of the characteristics visually.

Therefore, when the characteristics change according to the measurement conditions of the object 1 to be measured, the standard lines 5U and 5S to be displayed on the display screen 51 in advance may need to be changed. An operation procedure for changing the standard line 5U or the like will be described with reference to FIG.

First, the operation mode of the measuring device is set to the standard line change mode. Next, the display screen 51 of the operation panel 7
By operating the respective movement keys 7a to 7d (not shown) for moving the marker 5b up, down, left and right, the marker 5b is moved to the unit line 5a of the standard line to be changed. When the confirmation key is pressed in this state, the instruction of the unit line 5a to be changed is confirmed. Next, the moving key 7b is pressed, and the unit line 5a is pressed.
Move up. After moving to the position to be changed, the confirmation key is pressed, and the movement of the unit line 5a is confirmed. After confirmation, the changed unit line 5a is automatically connected to another unit line 5a.

[0011]

However, in the conventional measuring apparatus described above, the standard line setting means can only move the standard line up and down.
It cannot be defined simply by moving the line, for example, PC
Like the S power versus time specification, there is also a standard line shape shown in FIG.

The present invention has been made in view of such circumstances, and it is an object of the present invention to provide a measuring device that can edit a semi-fixed standard line in a free form.

[0013]

In order to solve the above-mentioned problems, in the measuring apparatus according to the present invention, the setting of the standard line is not performed by moving the line, but by specifying and moving the nodes constituting the standard line. With.

[0014] Specifically, (1) a measuring device for acquiring characteristic data indicating characteristics of a signal to be analyzed of an object to be measured;
(2) a display unit having a two-dimensional display screen; and (3) a characteristic display control unit for displaying waveforms of the characteristic data acquired by the measuring instrument on the display unit using predetermined parameters as a horizontal axis and a vertical axis. (4) a measuring device having a standard line display function, comprising: a standard line display control means for displaying a standard line superimposed on the characteristic in order to determine the quality of the characteristic displayed on the display screen. (5) marker display control means for generating and controlling a marker on the display screen; and (6) node storage means for storing each node data of the standard line corresponding to a plurality of measurement items for the measured object. (7) a measurement item setting means for setting one measurement item for the object to be measured and reading out corresponding node data from the node storage unit; and (8) a measurement item read from the measurement item setting means. Node data And rewritable storage means for storing,
(9) node changing means for changing the node data stored in the storage means in order to change the node designated by the marker; and (10) reading each node data stored in the storage means and displaying the data. A unit line creation unit for outputting information for sequentially connecting the screens to the standard line display control unit.

[0015]

(First Embodiment) FIG. 1 is a block diagram showing a configuration of an embodiment of a measuring apparatus according to the present invention. FIG. 2 is a diagram showing a process of changing the standard line. Hereinafter, description will be given based on the drawings. The same parts as in the conventional example are denoted by the same reference numerals. Therefore, the detailed description of the overlapping part will be omitted.

The measuring section 2 measures the characteristics of an object to be measured such as a mobile phone and sends digitized characteristic data to the characteristic display control means 41 in the display control section 40.
The characteristic display control means 41 performs necessary digital processing on the digital value of the inputted characteristic data,
And displays it on the display screen 51. That is, for example, the characteristic value (signal level) for each frequency is displayed with the frequency parameter as the horizontal axis. Therefore, the frequency characteristics of the measured object are displayed on the display screen 51.

In the display control section 40, in addition to the characteristic display control means 41, a standard line display means 42 and a marker display control means 43 for generating a marker 5b and controlling the display on a display screen 51 are incorporated. . The standard line display control unit 42 receives information on each unit line 5a created by the unit line creation unit 62, information on each node, and information on the marker 5b. The standard line display control means 42 displays each unit line 5 a and the node 5 c on the display screen 51 of the display unit 5. The marker display control means 43 displays the marker 5b on the display screen 51 of the display unit 5. Therefore, on the display screen 51,
The marker 5b, the continuous standard line 5U, and the like are displayed so as to overlap the frequency characteristics.

The marker display control means 43 includes an operation panel 7
Control is performed such that pressing the 0 move key (not shown) moves the marker 5b. Further, on the operation panel 70, a setting key for setting the operation mode of the measuring device to the standard line change mode, a fixing key for fixing the node 5c of each unit line 5a, and the like (not shown) are provided. Have been.

When measuring the level of the object 1 to be measured, for example, the adjacent channel, the measurement item and the corresponding channel are input on the operation panel 70. The measurement item setting means 64 reads out the nodes 5c of the corresponding standard lines 5U and 5S from the node storage means 65, and stores them in the storage means (RAM) 63.
Write to. The unit line creation unit 62 connects the nodes from the nodes stored in the storage unit 63 in the order in which they are stored, and creates each unit line. Also, the standard line display control means 4
2 displays the input unit lines 5a and the input nodes 5c. It is also possible to display each unit line by connecting the nodes in the order in which the standard line display control unit 42 is directly stored without providing the unit line creating unit 62.

When the standard line shown in FIG. 2A is changed, the operation mode is set to the standard line change mode using the setting key. Move the marker 5b to the third node 5c from the left to be changed,
The coordinates P (x1, y2) to be changed, for example, a frequency and a level or a time and a level are input. It is confirmed that the third node has moved to the coordinates P (FIG. 2B), and the enter key is pressed. Then, the node 5c is changed (FIG. 2
(C)). The change of the fourth node 5c from the left is performed by the same processing (FIGS. 2D and 2E). Note that the position of the node 5c to be changed can be determined by designating with the marker 5b.

The standard judging means 61 includes the characteristic display control means 4
1 and the characteristic data, and the data of the upper limit standard line 5U and the data of the lower limit standard line 5S are input from the standard line display control means 42. The standard judging means 61 issues a judgment start command,
It is determined whether or not the characteristic data falls within the upper and lower limits of the standard line, and the determination result is output.

(Second Embodiment) In the first embodiment,
Although the standard line composed of the six nodes 5c has been described as shown in FIG. 2A, the standard lines of the number of nodes and the shape as shown in FIGS. 3A to 3D are also displayed by the measurement items. be able to. This can be used for filter characteristics and the like as shown in FIG.

(Third Embodiment) A case where the number of unit lines, that is, the number of nodes is increased as shown in FIG. 4 will be described.
Use the setting key to set the operation mode to the standard line change mode. The marker 5b is moved to the third node 5c from the left to be changed, and the coordinates P (x1, y2) to be changed are input. Confirm that the third node has moved to coordinate P (FIG. 4B)
And press the confirmation key. Then, the unit line 5c is changed.

Next, when the node addition key is pressed while the cursor is located at the third node from the left, a new node is created between the third node from the left and the fourth node. The order stored in the storage means and the newly added nodes are inserted between the existing nodes 3 and 4 (FIG. 4 (c)). The unit line creation unit 62 connects the input nodes from the left, and the standard line display control unit 42 connects and displays the unit lines (FIG. 4D). The change of the fifth node 5c from the left is performed by the same processing (FIG. 4E). In addition, node 5 of the change addition destination
The position of c can also be determined by indicating with the marker 5b.

As shown in FIGS. 7 and 10, a standard line 5U for specifying the upper limit and a standard line 5S for specifying the lower limit are displayed. Also, as described in FIG.
A plurality of standard lines can be displayed simultaneously. Changes are
The cursor or the numeric key is designated, and the changed node is indicated on the coordinate display or the characteristic value display. By reading the characteristic value information of x and y from a CSV format file, it is also possible to set a standard line (template).

[0026]

As described above, the measuring apparatus having the standard line display function of the present invention can change the standard line setting to a node,
Or, by performing addition, a free standard line can be created.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of an embodiment of a measuring device according to the present invention.

FIG. 2 is a diagram showing a process of changing a standard line.

FIG. 3 is a diagram showing a standard line of another embodiment.

FIG. 4 is a diagram showing a standard line of another embodiment.

FIG. 5 is a block diagram showing a configuration of a conventional measuring device.

FIG. 6 is a block diagram illustrating a configuration of a measurement unit.

FIG. 7 is a diagram of a display screen displaying an example of a standard line.

FIG. 8 is a diagram showing a relationship between a standard line and a characteristic.

FIG. 9 is a diagram showing a process of changing a conventional standard line.

FIG. 10 is a diagram of a display screen displaying an example of a standard line.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Measurement object, 2 ... Measurement part, 3 ... Data processing part, 4
0: display control unit, 41: characteristic display control unit, 42: standard line display control unit, 43: marker display control unit, 5: display unit, 60: control unit, 61: standard determination unit, 62: unit line creation unit , 63 ... storage means, 64 ... measurement item setting means,
65: Node storage means, 66: Node changing means, 70: Operation panel.

Claims (1)

[Claims] A measuring device for acquiring characteristic data indicating characteristics of an analysis target signal of an object to be measured; a display unit having a two-dimensional display screen; Characteristic display control means (4) for displaying waveforms of the characteristic data acquired by the display unit on the display unit using predetermined parameters as a horizontal axis and a vertical axis.
1) and a measurement having a standard line display function including a standard line display control means (42) for displaying a standard line superimposed on the characteristic in order to judge the quality of the characteristic displayed on the display screen. In the apparatus, a marker display control means (43) for generating and controlling a marker on the display screen, and a node storage means for storing each node data of the standard line corresponding to a plurality of measurement items for the object to be measured (6
5), a measurement item setting means (64) for setting one measurement item for the object to be measured, and reading out corresponding node data from the node storage unit, and a respective measurement item read from the measurement item setting means. Rewritable storage means (63) for storing node data; node changing means (66) for changing node data stored in the storage means to change a node designated by the marker; And a unit line creating means (62) for reading out the respective node data stored in the memory and outputting information for sequentially connecting them on the display screen to the standard line display control means. Measuring device.