JP2013061347A - Apd measuring apparatus and display control method of measurement information in the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve operability of APD measurement.SOLUTION: An APD measuring apparatus 1 analyzes frequency components of a measured signal, respectively detects amplitudes of the respective analyzed frequency components, finds amplitude probability of the amplitude of each detected frequency component per unit time in each time lapse, stores the amplitude probability of the amplitude of each frequency component correspondingly to time lapse, and indicates a graph adopting one remaining parameter on coordinates adopting two or three parameters out of the frequency, the amplitude, the amplitude probability and the time as dimensions on the basis of the latest stored content. In the APD measuring apparatus 1, a display control unit 300 includes a measurement information display control unit 390 for allocating an optionally selected set item out of set items concerned with the APD measurement to an unused setting operation key 410 on a display screen and expansively displaying display contents related to the set item allocated to the setting operation key 410 on the display screen in accordance with operation of the setting operation key 410.

Description

  The present invention analyzes an amplitude component of a signal and measures an Amplitude Probability Distribution (APD) that indicates a cumulative distribution of a time rate in which the magnitude of each frequency component exceeds a predetermined threshold during a predetermined time. The present invention relates to an apparatus and a display control method for measurement information in the apparatus.

  Measures APD (Amplitude Probability Distribution), which indicates the time rate at which electromagnetic interference exceeds the specific amplitude level to be observed, as a very effective statistical parameter for estimating the effects of interference on digital communications For example, there is a technique in Patent Document 1 that measures APD with high amplitude resolution and time resolution, and there is a technique in Patent Document 2 that is applied to a spectrum analyzer or the like to try various displays.

  On the other hand, recently, there has been a demand for a communication method to simultaneously measure APDs of predetermined multiple frequency components in parallel. For example, as described in Non-Patent Document 1, a standard for digital terrestrial broadcasting is defined as an ARIB standard by the Radio Industries Association (ARIB), and a modulation method based on an OFDM (Orthogonal Frequency Division Multiplex Operation Mode) is defined. In this OFDM system, transmission data is divided into thousands of low-speed data in a predetermined band, and digital modulation is performed. For example, the predetermined band is 5.6 MHz, and the transmission data is digitally modulated by dividing it into 1 kHz carrier units and dividing it into a total of 5,600 lines.

  Therefore, it is desired that the APD measurement in the OFDM system is performed by analyzing the frequency of the signal component every 1 kHz and measuring the APD of each frequency component in parallel. Moreover, it can measure in parallel with the APD described in Patent Documents 1 and 2.

  Regarding the display of the APD, in Patent Document 2, the probability distribution is displayed in a band for each probability range, so that the distribution is identified and displayed so as to be easily visible.

Japanese Patent No. 3156152 Japanese Patent No. 3374154

Toshiba Review VOL. 58No. 12 (2003), p2-6

  By the way, in a measurement under a communication environment having a huge number of channels over a dense frequency band as in the OFDM method described above, amplitude changes in a large number of communication channels are measured at the same time, and the phenomenon is crushed over a wide level range. Multi-channel simultaneous APD measurement to grasp is an effective means.

  In addition, the multi-channel simultaneous APD measurement result can easily show the causal relationship between each attribute of the measurement signal by displaying multiple types of graphs combining the four attributes of frequency / generation time / amplitude level / APD of the signal to be measured. Can be analyzed.

  However, when performing multi-channel simultaneous APD measurement, a series of operation procedures (setting of measurement conditions, execution of measurement, result analysis, data storage) from the start of the apparatus based on APD measurement to the end of measurement, and the above-mentioned plural types of graphs The operation procedure until the display is displayed must be set after searching the setting items corresponding to the operation procedure by tracing the hierarchy from all the software menus of the device each time, and the setting work is complicated. In the future, as the number of functions of the apparatus increases, the number of setting steps further increases and the hierarchy becomes complicated. Therefore, simplification of setting work is desired.

  In addition to the settings required for normal measurement, the skilled technicians familiar with APD measurement can use frequently used setting items and attached optional functions different from normal measurement (such as graph display form and result analysis). However, these items were also inconvenient because they had to be operated by following the menu hierarchy each time they were measured.

  Accordingly, the present invention has been made in view of the above problems, and an object thereof is to provide an APD measuring apparatus capable of improving operability during APD measurement and a display control method for measurement information in the apparatus.

In order to achieve the above object, the APD measuring apparatus according to claim 1 analyzes the frequency component of the signal under measurement, detects the amplitude of each analyzed frequency component, and detects the amplitude of each detected frequency component. An APD measurement unit 100 that obtains an amplitude probability per unit time for each passage of time, a storage unit 200 that stores an amplitude probability of the amplitude of each frequency component output by the APD measurement unit corresponding to the passage of time, and a display unit 400, operation unit 500, and two or three of frequency, amplitude, amplitude probability, and time based on the latest storage contents of the storage unit obtained by accessing the storage unit at a predetermined timing. An APD measuring apparatus 1 including a display control unit 300 that displays a graph having a parameter with the remaining one as a parameter on a coordinate as a dimension,
The operation unit is a touch panel provided on the display unit,
The display control unit controls display of measurement parameters related to the APD measurement on a display screen, and when the measurement parameter is selected by touch input from the operation unit, display contents related to the measurement parameter are displayed on the display screen. A measurement information display control unit 390 that displays an expanded image is provided.

The display control method of measurement information in the APD measurement apparatus according to claim 2 includes an operation unit 500 including a touch panel provided in the display unit 400, analyzes a frequency component of a signal under measurement, and analyzes each analyzed frequency component. The amplitude is detected for each detected frequency component, the amplitude probability per unit time is determined for each elapsed time, the amplitude probability of each frequency component is stored in correspondence with the elapsed time, and the latest memory is stored. Display control method of measurement information in the APD measuring apparatus 1 for displaying a graph having two or three dimensions as parameters in the frequency, amplitude, amplitude probability and time based on the contents, and using the remaining one as a parameter Because
Display control of measurement parameters related to the APD measurement on a display screen, and when the measurement parameter is selected by a touch input from the operation unit, display contents related to the measurement parameter are expanded and displayed on the display screen. It is characterized by.

  According to the APD measuring apparatus of the present invention, since frequently used items can be assigned and set to the setting operation keys in advance when performing APD measurement, the time required for item search during measurement is reduced, and measurement work is performed. Can be done smoothly.

  In addition, by adopting a touch panel configuration for the operation unit, the number of hard keys for performing setting of measurement conditions, display processing related to the displayed graph, and the like under the control of the display information processing means is determined from the device housing. Since it can be reduced, the apparatus can be downsized and intuitive operation is possible.

It is a figure which shows the function structure of embodiment of the APD measuring apparatus which concerns on this invention. It is a figure which shows the example of a display of the several multimarker in the graph which uses an amplitude probability (APD) range as a parameter on the coordinate which makes an amplitude (level) range fixed to a specific value, uses frequency as a horizontal axis and time as a vertical axis. . It is a figure which shows the example of a display of the single marker in the graph of the Rayleigh scale which uses a frequency as a parameter on the coordinate which makes an amplitude (level) a vertical axis | shaft and APD is a horizontal axis. It is a figure for demonstrating a peak marker. It is a figure for demonstrating full span, a zone marker, and expansion / contraction. (A) It is a figure which shows the example of a hierarchical display of the item set to a setting operation key. (B) It is a figure which shows the example of a display screen at the time of the item setting of a setting operation key. It is a figure which shows the relationship between the function key mounted in the apparatus housing | casing and the setting item key on a display screen. It is a figure which shows the example of display control of a measurement parameter. It is a figure which shows the example of a display of a numeric key panel. It is a figure which shows the example of a display of a keyboard panel. (A)-(d) It is a figure which shows the example of a display at the time of expansion / reduction display control. It is a figure which shows the example of expansion / reduction display control at the time of multi-screen display. It is a figure which shows the example of a display at the time of screen scroll display control. It is a figure which shows the example of a screen scroll display control at the time of multiscreen display. It is a figure which shows the example of a display at the time of marker operation.

  Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the present invention is not limited by this embodiment, and all other forms, examples, operation techniques, etc. that can be implemented by those skilled in the art based on this form are included in the scope of the present invention. .

  First, a main configuration related to APD measurement of the APD measurement apparatus 1 of this example will be described with reference to FIG. As shown in the figure, the APD measurement apparatus 1 of this example includes an APD measurement unit 100, a storage unit 200, a display control unit 300, a display unit 400, an operation unit 500, and a control unit 600.

  The APD measurement unit 100 includes a frequency analysis unit 110, a level detection unit 120, and an APD unit 130.

The frequency analysis unit 110 selects an input signal in a desired frequency band (broadband) to be measured, and further selects the input signal in a narrower desired frequency band (narrow band). / D conversion means 110b and frequency selection means 110c. As the band selection means 110a, for example, if it is intended to measure noise in a high-frequency communication frequency band, a so-called heterodyne system as disclosed in Patent Document 2 can be adopted. That is, the input signal (noise) is mixed by a local oscillator and converted to a low frequency signal, and is limited to a frequency component in a necessary frequency band by using a band pass filter of a desired frequency band (δF).
In addition, if the frequency band of the signal to be measured is low and the frequency band can be directly used by the A / D conversion unit 110b, the band selection unit 110a is not necessarily required.

  The A / D conversion unit 110b receives the frequency component (signal) of the low frequency band-limited by the band selection unit 110a, and is fine with an amplitude (level) width ΔL with a clock of a period from a clock generator (not shown). (There is a threshold corresponding to this fineness.) Sampling (sampling) and converting to digital data. The amplitude probability (APD) to be obtained later is obtained for each fineness of the level width ΔL at the time of sampling.

  The frequency selection unit 110c receives a low-frequency signal over a frequency band of δF, and further includes n (hereinafter, sometimes referred to as n (numerical value) channels or n (numerical value) CH) band-pass filter groups. The frequency band is divided into fine frequency bands (δF / n). For example, if the channel of the communication line is every 1 kHz, n band-pass filters BPF1 to BPFn having a center frequency shifted by 1 kHz and a frequency band of approximately 1 kHz are provided. The frequency selection means 110c can be performed by performing a software FFT process with a CPU as a filter bank, for example.

  The level detection unit 120 includes detectors DET1 to DETn that detect amplitudes corresponding to the respective outputs of the bandpass filter of the frequency selection unit 110c, that is, amplitudes of the respective channels. The amplitude (level) of the center frequency) is detected.

  The APD unit 130 includes APD1 to APDn that are APD detectors that measure amplitude probabilities corresponding to the detectors DET1 to DETn, a clock generation unit 130a, and a range classification unit 130b. The configurations and operations of the APD1 to APDn are the same, and the amplitude probability is measured by logarithmically converting the outputs of the detectors DET1 to DETn with a LOG converter and converting the unit of amplitude to “dB”. Here, a conventional APD can be adopted as an APD that is an APD detector for measuring the amplitude probability. For example, the APD described in Patent Document 2 or the APD described in Japanese Patent Application No. 2006-253889 can be used.

  APD1 to APDn measure amplitude probability (distribution). The amplitude probability represents the number of times (the number of occurrences) that an input signal of the same magnitude is received within a predetermined time range (period: Δt). In this example, the fineness for distinguishing the magnitude of the input signal is the same as the fineness ΔL of the A / D conversion means 110b. The time range Δt for measuring the probability follows the control from the clock generator 130a. The clock generator 130a uses a pulse generator and a timer, for example, as a time range Δt, such as 1 second interval, 10 second interval, or 1 minute interval (both may be pulses of these time periods). Amplitude probabilities are measured by generating timing signals and causing APD1 to APDn to measure the frequency of the magnitudes of the input signals received within those time ranges. A configuration in which the time range Δt can be changed by changing the count time of the timer through the control unit 600 according to an instruction (operation input information) from the operation unit 500 may be adopted.

  The range classifying unit 130b classifies the range into a certain range according to the value of the amplitude probability calculated by each of APD1 to APDn. This is a function provided in order to classify into a range suitable for the survey with a resolution according to the survey purpose, although the survey may be performed with a resolution of 1%, for example. In this embodiment, according to an instruction (operation input information) from the operation unit 500, the amplitude probability is classified into four stages: 0 to 1%, 1% to 10%, 10% to 50%, and 50% to 100%. . As a method of classification, for example, the value of the amplitude probability obtained by APD1 to APDn is compared with a plurality of threshold values corresponding to the classified range, and a probability classification identification tag in the range to which the comparison result belongs is attached. The classification range may be changed by changing the threshold value to a desired threshold value through the control unit 600 in accordance with an instruction (operation input information) from the operation unit 500. In addition, from APD1 to APDn, updated amplitude probability values are aggregated and output for each time range Δt if it is fast. Further, the range classification means 130b classifies each amplitude detected by the level detection unit 120 into 20 dB intervals if the entire range of the level measurement range is 0 dBm to −100 dBm, for example, as in the amplitude probability. Is attached.

  The storage unit 200 stores the amplitude values output from the APD1 to APDn and the amplitude probability values thereof as measurement result data (APD measurement results) for all the measurement channels (measurement frequencies) over time. The time passage is stored at least for each time range Δt when the amplitude probability is measured. Further, the storage unit 200 corresponds to the amplitude classification value corresponding to the probability classification identification tag when the range classification means 130b classifies, corresponds to the amplitude value corresponding to the amplitude classification tag, and corresponds to the measured frequency. And remember. Further, the time information obtained from the amplitude value and the amplitude probability value is also received from the clock generator 130a and stored. Note that the above range classification means 130b is not on the input side (APD unit 130 side) of the storage unit 200, but is on the output side (display control unit 300 side), and stored amplitude probability value or amplitude value. It is also possible to determine which class the amplitude probability value or amplitude value belongs to, and output the determined classification identification tag with the classification attached. The storage unit 200 is accessed from the display control unit 300 and can read the latest stored contents.

  The display control unit 300 is a means for controlling various setting items and display contents necessary for APD measurement displayed on the display unit 400, and is roughly divided into the following elements (I) to (V). ing. The display control unit 300 (I) receives the amplitude probability value, the amplitude value, the frequency, and the time information from the storage unit 200 at a predetermined timing, and generates a graph for display on the display unit 400. The control unit 310b, (II) a designated marker generation unit 320, a peak search unit 340 and a peak marker generation unit 350, a zone marker generation unit 360, and an enlargement / reduction, which are means for setting a marker on the displayed graph Screen control as means for displaying a desired graph or the like in accordance with the instruction on the display unit 400 based on an instruction (operation input information) from the control unit 310a, the numerical control unit 310c, and (III) the operation unit 500 Unit 330, (IV) common coordinate information storage unit 370 and display format storage unit 380 for performing each display, and (V) And a measurement information display control unit 390 is means for performing various display controls of the measurement information on APD measured graph or the like based on various setting items and measurement used to measure to achieve the author of convenience.

  The coordinate information stored in the coordinate information storage unit 370 is information necessary for specifying the position of the display screen such as a graph to be displayed, a scale, and each display column. The display format storage unit 380 stores the coordinate information. The format that is displayed is the layout and graphic of the displayed graph, marker, scale, each display column, etc., and when each main part of the display control unit 300 tries to display, the display position is specified and specified. It is used to display in the format corresponding to the selected position. In the description of each constituent element below, description of the coordinates and format is omitted.

  The graph generation unit 310 stores the frequency, amplitude, amplitude probability, and the stored frequency based on the latest storage content obtained by accessing the storage unit 200 at a predetermined timing, for example, at intervals of the time range Δt described above. A first graph is displayed on the display unit 400 with coordinates having at least one of the two dimensions as parameters and the other one as a parameter. When the operator watches the data, when the specific marker or the specific range in the two dimensions or parameters on the displayed graph is specified as the specific value by the specified marker, the operation unit 500 In response to the switching instruction from, the two dimensions or parameters designated by the designated marker are generated by switching to a graph for the dimensions and parameters of the new combination that has been designated when the two dimensions or parameters are fixed to the specific values.

  When generating a two-dimensional graph, the graph generation unit 310 is specified (or specified) by a specified marker or peak marker, which will be described later, among the dimensions of frequency, amplitude, amplitude probability, and time, or as a default. The specific value in any dimension is set as a fixed value, and the data of the remaining dimension in which the specific value is involved is read from the storage unit 200. Then, the horizontal axis (hereinafter referred to as “X-axis”) and the vertical axis (hereinafter referred to as “Y-axis”) of the desired graph requested from the operation unit 500 for data of two dimensions among the remaining dimensions. In other words, a graph using the remaining one-dimensional data as a parameter is generated and displayed on the display unit 400, and is updated and displayed at each predetermined timing. In the case of generating a three-dimensional graph, the remaining dimensions other than the dimension for which the specific value is designated are allocated and generated as three dimensions.

  The specific graph display processing and graph example generated by the graph generation unit 310 are the paragraph numbers of the patent application (Japanese Patent Application Laid-Open No. 2010-237151 (Japan filing date: March 31, 2009)) by the present inventors. [0035] to [0053] and paragraphs [0038] to [0056] and [0065] to [0125] of Japanese Patent Application No. 2010-110376 (Japanese filing date: May 22, 2010). Therefore, the description of those portions is omitted in this specification.

  The designation marker generation unit 320 can designate each dimension constituting the coordinates of each graph by an instruction (operation input information) from the operation unit 500 on the graph displayed as described above (for example, FIG. 2). The specific value is fixed to a fixed value in the next switching destination graph, and a graph developed around the fixed value can be obtained.

  The designation marker generation unit 320 can also designate a parameter (or its scale) as well as designation of each dimension constituting the coordinates of each graph by an instruction (operation input information) from the operation unit 500. Then, the specific value is fixed to the next fixed graph fixed value, and a graph developed around the fixed value can be obtained. For example, the parameter scale in FIG. 2 is designated by placing a sub marker (as one type of designated marker) at an “amplitude probability range identification display” location, and the amplitude probability range designated by this sub marker is used as a specific value. You can also expand the following graph. Although the sub marker is set at the parameter scale in FIG. 2, it may be set at a position that directly points to the parameter in the graph (in the coordinates).

  The designated marker generation unit 320 can generate and display a single marker (MKR) or a plurality of multimarkers (MKR) in addition to the designated marker. FIG. 2 shows an example in which five markers are set on the X axis (frequency axis). In the case of FIG. 2, the numerical control unit 310 c reads the frequency, amplitude (level), and amplitude probability (APD) at the multimarker point and at the specific value t = 79 sec from the storage unit 200. Display. That is, the single or multi-marker is for reading the data at the marker point numerically, and at the same time, can read and display data values other than the values displayed in the graph. An example of a single marker is shown in FIG.

  When a predetermined graph is displayed, the peak search unit 340 receives a specification of a range for searching for a peak from the operation unit 500 via the screen control unit 330 and obtains a peak position in the range. And the peak marker production | generation part 350 produces | generates the marker which shows a peak position on the displayed graph, and displays it on the display part 400. FIG. For example, when there is a peak marker display request in a range of 10% <APD ≦ 50% on a level chart (amplitude is vertical axis, time is horizontal axis) as shown in FIG. 340 accesses the storage unit 200 and searches for the X-axis and Y-axis positions at which the amplitude (level) at each frequency reaches a peak in a range of 10% <APD ≦ 50%, and at the same time, Read the amplitude probability. The peak marker generation unit 350 generates and displays a marker indicating the peak position at the peak position, and the numerical control unit 310c displays the amplitude and the amplitude probability at the peak position (see white display in FIG. 4). .

  Since the peak marker indicates the maximum value of the parameter, the specific value of the parameter specified by the peak marker is specified as the specific value using the value specified by the peak marker instead of the specified marker, It is also possible to switch graphs.

  For example, when the graph of the level chart shown in FIG. 5A displays the amplitude change from five minutes before the right end is the current time position (current time position), the full span control unit 310b performs measurement When a request for observing a level change from the start is made, the full span control unit 310b receiving the request via the screen control unit 330 sends the request to the graph generation unit 310 from the measurement start time (time 0). A level chart showing the level change until the current time (full span) is generated, for example, a graph shown in FIG. 5B and displayed on the display unit 400. The full span control has been described with the graph of the level chart, but it can be executed with the other graphs.

  The zone marker generation unit 360 generates and displays a marker indicating a zone at the position and width indicated by the operation unit 500 on the displayed graph. See the zone marker in FIG. When the zone is displayed on the graph, the enlargement / reduction control unit 310a that receives an enlargement instruction from the operation unit 500 via the screen control unit 330 enlarges the designated range of the graph (enlarges the image). The generated graph is generated by the graph generation unit 310 and is enlarged and displayed on the display unit 400. Refer to FIG. When the enlargement / reduction control unit 310a receives the reduction instruction next while displaying FIG. 5C, the graph generation unit 310 receives a graph obtained by reducing the specified range of the graph (reducing the image). It is generated and displayed enlarged on the display unit 400 as shown in FIG. The zone marker and the enlargement / reduction control have been described with the graph of the level chart, but can be executed with other types of graphs.

  The screen control unit 330 controls each unit in the display control unit 300 in response to an instruction (operation input information) from the operation unit 500 as already described when describing each unit.

  The measurement information display control unit 390 includes an item assignment unit 390a and a display information processing unit 390b, and controls the assignment of frequently used setting items to the setting operation keys 410 on the display screen for the convenience of the operator. Various display processes of measurement information related to APD measurement such as graphs based on measurement conditions and measurement results are performed based on an operator's touch panel operation.

  The item assigning unit 390a is a setting operation key on the display screen for setting items frequently used by the operator during APD measurement by a predetermined operation from the operation unit 500 (direct operation from the touch panel or various peripheral devices). 410 (soft key).

  Here, the setting item assignment process to the setting operation key 410 will be described. First, when the setup key of the setting operation key 410 on the display screen of FIG. 6B is selected (“User Menu Setup” in the example), the dialog of FIG. 6A is displayed. Then, as shown in FIG. 6A, the operator searches for an item to be set (“Display Mode” in the example in the figure) from the menu hierarchy in advance, and selects the corresponding item on this screen. Next, when the “Set” button in FIG. 6A is pressed, an item selected from the menu hierarchy is assigned (“Display Mode 1 sec Accum” in the example shown in “Menu 2” to “Menu 1”). “Menu 7” is not set). In other words, the setting operation key 410 registered as an item is selected by tracing the menu hierarchy as in the past, and by selecting the setting operation key 410, the condition setting corresponding to the assigned item and the corresponding operation can be performed. It functions as a shortcut key for performing display contents to be displayed (for example, display of the setting dialog 420).

  Further, as shown in FIG. 7, the function keys ("F1" to "F8" in the example in the figure) arranged on the apparatus casing are associated with the setting operation key 410 in advance, and the setting operation is performed as described above. By assigning an item to the key 410, the same processing can be performed on the item assigned to the setting operation key 410 by a key operation from a function key.

  When the configuration of the operation unit 500 is a touch panel system, the display information processing unit 390b inputs the operation input information based on the direct operation from the touch panel by the operator from the operation unit 500, and the measurement information displayed on the display screen The display control of the setting dialog 420 regarding the measurement conditions and the measurement results, etc. and the display content conversion process are performed. The processing functions of the display information processing means 390b include (1) measurement parameter display control, (2) enlargement / reduction display control, (3) screen scroll display control, and (4) marker operation control. Each function will be described below with reference to FIGS.

(1) Measurement Parameter Display Control As shown in FIG. 8, the measurement parameter display control is performed by measuring each measurement parameter (“Center Freq.” In the example: “Center of measurement”) of the graph related to the measurement result displayed on the display screen. Frequency, “RBW”: RBW (Resolution Band Width), “Channel Num.”: Number of measurement channels, “Ref, Level”: Reference level, “Meas. Time”: Measurement time, “Cal”: Calibration content, “Trace” ": Display graph format) is displayed at the top of the screen.

  Each displayed measurement parameter is associated with a setting dialog 420 corresponding to the setting contents of these measurement parameters. When the operator performs a selection operation from the touch panel, operation input information based on this operation is displayed. The display contents related to the measurement parameters such as the measurement parameter setting dialog 420 and the input panel 430 which are input from the operation unit 500 and selected as shown in FIG. 9 are displayed on the display screen. 9 is a numerical value input screen for inputting the setting contents of “Meas.Time” by the setting dialog 420, and FIG. 10 is a character input screen for the setting dialog 420 in FIG. In addition, a numeric keypad panel 430a (in the case of character input, a keyboard panel may be used) is displayed in an empty space on the display screen together with a setting dialog 420 corresponding to the setting contents.

(2) Enlargement / reduction display control As shown in FIG. 11A, enlargement / reduction display control is performed on the screen as shown in FIG. 11B by operation input information based on a click operation from the touch panel. A soft menu (“Zone”, “Zone Marker On Off”, “Zone Marker Setup”, “Marker” in the example) associated with the zone marker (dotted line portion) is displayed. Then, as shown in FIG. 11C, when the operator performs a drag operation of the zone marker and designates the enlargement range, operation input information based on this operation is input from the operation unit 500, and FIG. The selected portion is enlarged and displayed as shown in FIG.

  As shown in FIG. 12, in the case of multi-screen display of measurement results (upper screen is enlarged display, lower screen is full span display), the range to be enlarged is selected in the same manner as the above operation in the full span display graph. Thus, it is also possible to analyze in detail the measurement results in the range (enlarged display) to be noted simultaneously while observing the wide measurement range (full span display).

(3) Screen Scroll Display Control As shown in FIG. 13, the screen scroll display control inputs operation input information based on this operation from the operation unit 500 when the operator performs a drag operation up, down, left, or right from the touch panel. And scrolling the displayed graph in the operated direction.

  Further, as shown in FIG. 14, in the case of multi-screen display of measurement results (upper screen is enlarged display and lower screen is full span display), the position of the zone marker (dotted line portion) displayed on the full span display is displayed on the touch panel. When the drag operation is performed, the operation input information based on this operation is input from the operation unit 500, and the display range enlarged in accordance with this operation is controlled to scroll the screen in conjunction with the operation. Similarly, when a drag operation is performed on the enlarged display screen from the touch panel, the position of the zone marker on the full span display screen is controlled in conjunction with this operation. As a result, it is possible to analyze in detail the measurement results of the range (enlarged display) to be noted simultaneously while observing the wide measurement range (full span display).

(4) Marker operation control As shown in FIG. 15, when a marker (dotted line) displayed on the display screen is dragged from the touch panel, operation input information based on this operation is input from the operation unit 500, For example, the frequency of the graph corresponding to the marker position after movement is controlled to be displayed immediately below the graph, and the measurement result at that frequency point is also displayed numerically in the lower list.

  The display information processing unit 390b is an effective function that simplifies the operation when the touch panel method is adopted as the configuration of the operation unit 500. However, the configuration of the operation unit 500 is a peripheral device such as a mouse or a keyboard. It works even in the case of equipment only. In other words, when the operation unit 500 is a mouse, for example, item selection or screen scrolling can be performed in the same manner as a drag operation from the touch panel by moving in the scroll direction simultaneously with an item selection by a click operation or a click operation.

  The display control unit 300 includes a program that describes the functions and operations described above and a CPU that executes the program. The combination of the main components that configure the display control unit 300 in FIG. It is not necessary to be one, and it can be rearranged and changed more rationally in executing the above-described functions / operations or designing them. The present invention is within the scope of the present invention as long as it is configured to execute the functions and operations described above.

  The display unit 400 includes a display device such as a liquid crystal display or a CRT, and is generated based on the display of the setting item screen related to the APD measurement, the display of the APD measurement result, and the APD measurement result based on the display control of the display control unit 300. Display contents related to driving of the APD measuring apparatus 1 and various controls such as various graphs (2D or 3D display) are displayed.

  The operation unit 500 includes, for example, various operation keys such as a numeric keypad and a selection button provided in the apparatus main body, various peripheral devices including a pointing device such as a keyboard and a mouse, and a touch operation on an input surface corresponding to the display screen of the display unit 400. It is comprised with various input devices, such as a touchscreen provided with the touch sensor for detecting the contact position by. The operation unit 500 is subjected to a predetermined operation at the time of starting APD measurement or when selecting / changing parameters of various setting items related to measurement, and outputs operation input information corresponding to the operation to the display control unit 300.

  The control unit 600 performs drive control of each unit constituting the APD measurement apparatus 1 such as various setting controls related to APD measurement for the APD measurement unit.

  As described above, the APD measuring apparatus 1 described above has an item assigning unit 390a for performing control for assigning frequently used setting items to the setting operation keys 410 on the display screen for the convenience of the operator, and the operation. A measurement information display control unit 390 including display information processing means 390b for performing various display processes of measurement information related to APD measurement such as a graph based on measurement conditions and measurement results based on a predetermined operation of the operator.

  Accordingly, since frequently used items can be assigned and set to the setting operation key 410 in advance when performing APD measurement, the time required for item search at the time of measurement can be reduced, and the measurement work can be performed smoothly. it can.

  Further, when the configuration of the operation unit 500 is a touch panel system, the number of hard keys for performing setting of measurement conditions, display processing related to the displayed graph, and the like is reduced from the apparatus housing by control by the display information processing unit 390b. Therefore, the apparatus can be downsized and intuitive operation can be performed.

DESCRIPTION OF SYMBOLS 1 ... APD measuring apparatus 100 ... APD measuring part 110 ... Frequency analysis part (110a ... Band selection means, 110b ... A / D conversion means, 110c ... Frequency selection means)
120: level detection unit 130: APD unit (130a: clock generation unit, 130b: range classification means)
200 ... Storage unit 300 ... Display control unit 310 ... Graph generation unit 310 (310a ... Enlargement / reduction control unit, 310b ... Full span control unit, 310c ... Numerical control unit)
320 ... designated marker generation unit 330 ... screen control unit 340 ... peak search unit 350 ... peak marker generation unit 360 ... zone marker generation unit 370 ... coordinate information storage unit 380 ... display format storage unit 390 ... measurement information display control unit (390a ...) Item allocation means, 390b ... display information processing means)
400: Display (410 ... Setting operation key, 420 ... Setting dialog, 430 ... Input panel, 430a ... Numeric keypad panel, 430b ... Keyboard panel)
500 ... operation unit 600 ... control unit

Claims (2)

APD measurement unit (100) that analyzes the frequency components of the signal under measurement, detects the amplitude of each analyzed frequency component, and obtains the amplitude probability per unit time for each detected amplitude of the frequency component over time A storage unit (200) that stores the amplitude probability of each frequency component output by the APD measurement unit corresponding to the passage of time, a display unit (400), an operation unit (500), and the storage unit Based on the latest storage contents of the storage unit obtained by accessing the memory at a predetermined timing, the remaining one is a parameter having coordinates of two or three of frequency, amplitude, amplitude probability and time. An APD measuring device (1) comprising a display control unit (300) for displaying on the display unit the following graph:
The operation unit is a touch panel provided on the display unit,
The display control unit controls display of measurement parameters related to the APD measurement on a display screen, and when the measurement parameter is selected by touch input from the operation unit, display contents related to the measurement parameter are displayed on the display screen. An APD measuring apparatus, comprising a measurement information display control unit (390) for expanding and displaying on the top. An operation unit (500) including a touch panel provided on the display unit (400) is provided, the frequency component of the signal under measurement is analyzed, the amplitude of each analyzed frequency component is detected, and each detected frequency component is detected. The amplitude probability per unit time for the amplitude is obtained for each passage of time, the amplitude probability of the amplitude of each frequency component is stored corresponding to the passage of time, and the frequency, amplitude, amplitude probability and time are stored based on the latest stored contents. The display control method of measurement information in the APD measurement apparatus (1) for displaying a graph having the remaining one as a parameter on coordinates having two or three dimensions among them,
Display control of measurement parameters related to the APD measurement on a display screen, and when the measurement parameter is selected by a touch input from the operation unit, display contents related to the measurement parameter are expanded and displayed on the display screen. A display control method of measurement information in an APD measuring apparatus characterized by the above.