JP2012073041A - Setting method for operation condition in waveform recorder and waveform recorder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a setting method for operation conditions in a waveform recorder capable of properly and easily setting operation conditions of plural items required to record and display a waveform of an input signal, and the waveform recorder.SOLUTION: The setting method for operation conditions in the waveform recorder includes a stage in which a sentence shows measurement content for a specific measurement purpose of at least one measurement purpose which can be performed by using the waveform recorder and at least a part of the sentence can be changed by selecting plural choices. The setting method includes a stage in which the operation conditions of the plural items are set by setting the operation condition determined in advance by being associated with each of the plural choices of the sentence to the operation condition of the choice displayed in the sentence and setting other operation conditions to the operation conditions determined in advance by being associated with the specific measurement purpose.

Description

  The present invention relates to a method for setting operating conditions in a waveform recording apparatus and a waveform recording apparatus. More specifically, the present invention relates to a waveform in which a plurality of operating conditions need to be set in order to record and display a waveform of an input signal. The present invention relates to a method for setting operating conditions in a recording apparatus and a waveform recording apparatus.

  Conventionally, there is a waveform recording device that records and displays a waveform of an input signal (Patent Document 1). Waveform recording devices are widely used for leakage monitoring, power failure monitoring, operation analysis of various devices, and the like.

  In general, a waveform recording apparatus needs to set a plurality of operation conditions prior to measurement in order to record and display a waveform of an input signal. For example, the ratio in the time axis direction (time per 1 div (mass)) when generating waveform recording information based on the input signal, the ratio in the measurement value axis direction of each channel (electrical parameters per 1 div (mass)) Value), the zero position of the signal waveform of each channel, the trigger condition for starting the measurement, etc. need to be set.

JP 2009-92459 A

  However, in the conventional waveform recording apparatus, a screen for setting a plurality of operation conditions necessary for recording and displaying a waveform of an input signal is divided into a plurality of screens for each set item having a certain set. There may be. Also, there may be many setting items with simplified setting item names on one setting screen. Therefore, it may be difficult for an operator unfamiliar with the operation condition setting operation of the waveform recording apparatus to find and set a setting item that is desired to be set to an appropriate condition for a specific measurement purpose. . In addition, since there are many setting items for an operator who is unfamiliar with the operation setting operation of the waveform recording apparatus, which setting item should be set for a specific measurement purpose to start measurement. As such, it may be difficult to understand.

  That is, in the conventional waveform recording apparatus, the operator reads the instruction manual according to the content to be measured, and sets the setting items present on each setting screen to the ones that are considered optimal (select from a plurality of options). Or enter any value). Then, the measurement is started, and if there is a setting that is not enough, it is considered what is missing, the setting item is moved to the setting screen, and the setting is performed again. For example, if the ratio in the time axis direction is not appropriate, a desired number of waveforms may not be recorded and displayed. In addition, when the ratio in the measurement value axis direction is not appropriate, the amplitude of the displayed waveform may be unnecessarily small, or the waveform over the entire amplitude may not be displayed.

  By the way, as a measurement purpose that can be performed using the waveform recording apparatus, there is a general measurement purpose desired by many users. In addition, such general measurement purposes are often desired even by an operator who is not familiar with the operation condition setting operation of the waveform recording apparatus.

  However, with conventional waveform recording devices, even for such general measurement purposes, it is necessary to read the instruction manual, search for setting items, perform necessary calculations, and perform multiple calculations. The operating conditions must be set.

  Accordingly, an object of the present invention is to set an operating condition in a waveform recording apparatus capable of appropriately and easily setting a plurality of operating conditions required for recording and displaying a waveform of an input signal. And providing a waveform recording apparatus.

  The above object is achieved by a method for setting operating conditions and a waveform recording apparatus in the waveform recording apparatus according to the present invention. In summary, the first aspect of the present invention is an operation condition setting method in a waveform recording apparatus for recording and displaying a waveform of an input signal in accordance with a plurality of preset operation conditions; using the waveform recording apparatus A sentence representing the measurement content for a specific measurement purpose among at least one measurement purpose that can be displayed, at least a part of which is changeable by selecting from a plurality of options And setting a predetermined operation condition in relation to each of the plurality of options of the sentence among the operation conditions of the plurality of items to the option displayed in the sentence, and the plurality of items Of the operating conditions that are not related to the plurality of options of the sentence are determined in advance in relation to the specific measurement purpose. By setting the work conditions, and setting the operating condition of the plurality of items; a method of setting the operating conditions in the waveform recording device and having a.

  According to the second aspect of the present invention, in the waveform recording apparatus for recording and displaying the waveform of the input signal in accordance with preset operation conditions of a plurality of items; an operation condition storage unit that stores the setting of the operation conditions of the plurality of items; First setting screen information for displaying a first setting screen for arbitrarily setting each of the operation conditions of the plurality of items, and at least one measurement purpose that can be performed using the waveform recording apparatus A setting screen information storage unit storing second setting screen information for displaying a second setting screen for setting the operation conditions of the plurality of items for a specific measurement purpose; And a display unit for displaying a second setting screen; causing the first setting screen to be displayed on the display unit based on the first setting screen information; and the second setting screen information based on the second setting screen information. 2 A display control unit for displaying a fixed screen on the display unit; and a setting screen for inputting a signal for selectively displaying one of the first and second setting screens on the display unit to the display control unit A selection control unit; and a setting control unit that stores operation condition information for setting operation conditions of the plurality of items in the operation condition storage unit on the basis of contents specified on the first and second setting screens. The second setting screen is a sentence representing measurement contents for a specific measurement purpose among at least one measurement purpose that can be performed using the waveform recording device, at least a part of which is A sentence that can be changed by selecting from a plurality of options is displayed; the setting control unit, when the second setting screen is displayed on the display unit, out of the operating conditions of the plurality of items The operation condition that is determined in advance in relation to each of the plurality of options of the written text is set to that of the option displayed in the text, and the plurality of items of the sentence among the operation conditions of the plurality of items The operation condition storage unit stores the operation condition information for setting an operation condition that is not related to an option to an operation condition that is determined in advance in relation to the specific measurement purpose. A waveform recording apparatus is provided.

  According to the present invention, it is possible to appropriately and easily set operation conditions for a plurality of items required for recording and displaying a waveform of an input signal.

It is a block diagram which shows the structure of the waveform recording device which concerns on one Example of this invention. It is a schematic diagram which shows the external appearance of the waveform recording device which concerns on one Example of this invention. It is a schematic diagram which shows the simple setting screen which concerns on one Example of this invention. It is a schematic diagram which shows the arbitrary setting screen which concerns on one Example of this invention. It is a schematic diagram which shows the arbitrary setting screen which concerns on one Example of this invention. It is a schematic diagram which shows the arbitrary setting screen which concerns on one Example of this invention. It is a schematic diagram which shows the arbitrary setting screen which concerns on one Example of this invention. It is a schematic diagram which shows the waveform display screen which concerns on one Example of this invention.

  Hereinafter, a method for setting operating conditions and a waveform recording apparatus in the waveform recording apparatus according to the present invention will be described in more detail with reference to the drawings.

Example 1
1. Basic Configuration of Waveform Recording Device First, the basic configuration of the waveform recording device according to an embodiment of the present invention will be described.

  FIG. 1 is a functional block diagram of the waveform recording apparatus 1 of the present embodiment. The waveform recording apparatus 1 of this embodiment can record and display the waveform of an input signal according to a plurality of preset operation conditions. The waveform recording apparatus 1 of the present embodiment displays an arbitrary setting screen as a setting screen to arbitrarily set detailed operation conditions necessary for recording and displaying the waveform of the input signal. Select from two setting methods: an optional setting that can be set, and a simple setting that displays the simple setting screen as the setting screen and allows easy setting of operating conditions for specific measurement purposes. can do.

  As shown in FIG. 1, the waveform recording apparatus 1 includes an A / D converter 2a, 2b, 2c, 2d, a trigger signal output unit 3, a control unit 4, a memory 5, an operation unit 6, a display unit 7, and a main control unit. 8 and a data recording unit 9. In the present embodiment, as an example, the trigger signal output unit 3 and the control unit 4 are constructed in an FPGA (Field Programmable Gate Alley). The A / D conversion units 2a, 2b, 2c, and 2d serving as measurement units are also referred to as measurement channels 1, 2, 3, and 4 (hereinafter also referred to as “CH1”, “CH2”, “CH3”, and “CH4”, respectively). ) Is configured. Specifically, the A / D converters 2a, 2b, 2c, and 2d (hereinafter also referred to as “A / D converter 2” when not distinguished) perform analog-to-digital conversion on the input signal Si (that is, Sampling data D1 as measurement information (measurement data) by sampling the input signal Si at a predetermined sampling period).

  The trigger signal output unit 3 includes a trigger detector (not shown) having an AND circuit and an OR circuit built in the FPGA. The trigger signal output unit 3 is set in advance as described below with electrical parameters (eg, voltage value, current value, frequency, phase, etc.) of the sampling data D1 output from the A / D conversion unit 2. Based on the comparison result with the set value, the trigger signal St is output. In the trigger signal output unit 3, the connection form of the AND circuit and the OR circuit is changed at any time according to the operation condition (recording condition) set for the waveform recording apparatus 1. In order to facilitate understanding of the present invention, description of this change in connection form (change in settings for FPGA) is omitted.

  The control unit 4 sequentially stores the sampling data D1 generated by the A / D conversion unit 2 in the memory 5 by, for example, a first-in first-out method. Further, when the trigger signal St is output from the trigger signal output unit 3, the control unit 4 reads the sampling data D1 for a predetermined time (a predetermined number of samplings) from the memory 5, and uses this as the recording target data D2. To be recorded in the data recording unit 9. The recording target data D2 is waveform recording information for recording the waveform of the input signal based on the input signal.

  For example, the memory 5 is composed of an SDRAM (Synchronous Dynamic Random Access Memory) and temporarily stores the sampling data D1.

  As shown in FIG. 2, the operation unit 6 includes a plurality of operation switches such as a key 61 used for setting operation conditions and a start / stop switch 62 for instructing start / stop of measurement. An operation signal corresponding to the operation is output to the main control unit 8. In particular, in this embodiment, the operation unit 6 has a setting switch 63 for outputting an operation signal to the main control unit 8 so as to display an arbitrary setting screen for performing arbitrary setting, and a simple setting screen for performing simple setting. A simple setting switch 64 that outputs an operation signal to the main control unit 8 is provided.

  The display unit 7 is configured by an LCD (Liquid Crystal Display), for example. The display unit 7 displays a setting screen (arbitrary setting screen, simple setting screen) for setting operation conditions of a plurality of items based on the setting screen display data D3 output from the main control unit 8, and the main control. Based on the waveform display data D4 output from the unit 8, a waveform display screen for displaying the waveform of the input signal is displayed.

  The main control unit 8 comprehensively controls the waveform recording apparatus 1. Specifically, the main control unit 8 controls the trigger signal output unit 3 and the control unit 4 in accordance with an operation signal output from the operation unit 6 and a preset operation condition (set value). The main control unit 8 also displays a setting screen as setting screen information for displaying a setting screen (arbitrary setting screen, simple setting screen) for setting operation conditions of a plurality of items from the setting screen information storage unit. Read data D3. In this embodiment, the setting screen information storage unit is a setting screen memory 81 configured by a ROM built in the main control unit 8. The main control unit 8 also displays waveform display data D4 as waveform display information for displaying a waveform display screen for displaying the waveform of the input signal based on the recording target data D2 output from the control unit 4. Is generated. Then, the main control unit 8 displays setting screen display data D3 for displaying the setting screen (arbitrary setting screen, simple setting screen) on the display unit 7 and waveform display data for displaying the waveform display screen. D4 is output.

  As an example, the data recording unit 9 includes a removable memory (such as a memory card) and an HDD (Hard Disc Drive). The data recording unit 9 records the recording target data D2 (sampling data D1 for a predetermined time) under the control of the control unit 4. The data storage unit 9 is a waveform recording information storage unit that stores recording target data D2 as waveform recording information.

2. Basic Usage Method of Waveform Recording Device Next, a basic usage method of the waveform recording device 1 will be described. In the following description, it is assumed that the measurement object is electrically connected to the A / D converter 2 and the input signal Si is input to the waveform recording apparatus 1. The feature of the present invention is that the operation conditions of a plurality of items can be easily set on the simple setting screen. In order to facilitate understanding of the present invention, the basic usage method of the waveform recording apparatus 1 is used. First, a method for setting operation conditions for a plurality of items on an arbitrary setting screen will be described first.

2-1. Arbitrary setting In the recording process of the recording target data D2 by the waveform recording apparatus 1, first, the recording target data D2 is recorded, and the operating conditions for generating the waveform display data D4 are set.

  Specifically, when performing arbitrary setting, by pressing the setting switch 63 (FIG. 2) of the operation unit 6, the arbitrary setting screen 10 as a setting screen illustrated in FIGS. 4 to 7 is displayed on the display unit 7. The arbitrary setting screen 10 is a display screen for arbitrarily setting the operating conditions of the A / D conversion unit 2, the trigger signal output unit 3, and the control unit 4. In this embodiment, the arbitrary setting screen 10 is selected by tabs titled “Measurement setting”, “Each CH (channel) setting”, “All CH (channel) list”, and “Trigger”, respectively. It has a plurality of tab screens 11, 12, 13, 14 to be displayed. In order to facilitate understanding of the present invention, typical setting items will be described among a plurality of operation conditions necessary for recording and displaying the waveform of an input signal.

(1) Measurement Setting Tab Screen The measurement setting tab screen 11 shown in FIG. 4 includes a time axis range setting unit 11a, a time axis magnification setting unit 11b, a recording length setting unit 11c, a repetitive recording setting unit 11d, and the like. The

  The time axis range setting unit 11a is a part that sets a ratio in the time axis (horizontal axis) direction when the control unit 4 generates the recording target data D2 based on the sampling data D1. For example, in a state where the condition “5 ms / div” is set in the time axis range setting unit 11a, 5 ms per 1 div in the time axis direction in the waveform display unit 31 (FIG. 8) of the waveform display screen 30 described later. The recording target data D2 is generated by the control unit 4 so that the sampling data D1 is included.

  The time axis magnification setting unit 11b displays in the time axis direction when the control unit 4 displays the signal waveform W on the waveform display unit 31 (FIG. 8) based on the recording target data D2 recorded in the data recording unit 9. This is the part where the magnification is set. For example, in a state where the condition (equal magnification) of “x1” is set in the time axis magnification setting unit 11b, the time length set in the time axis range setting unit 11 per one div of the waveform display unit 31 (this In the example, the signal waveform W corresponding to 1 times “5 ms”) is displayed.

  The recording length setting unit 11c is a part where the control unit 4 sets the length of time for generating the recording target data D2 based on the sampling data D1. For example, when a condition of “20 div” is set in the recording length setting unit 11c, a time obtained by multiplying the time axis ratio (“5 ms” in this example) set by the time axis range setting unit 11a by 20 times. (Ie, “100 ms”) worth of recording target data D2 is generated.

  The repetitive recording setting unit 11d is a part that selects whether measurement is performed only once under a set operation condition (single shot) or repeated multiple times for each trigger signal.

(2) Each CH setting tab screen Each CH setting tab screen 12 shown in FIG. 5 includes a channel selection unit 12a, a selected channel display unit 12b, a channel use selection unit 12c, a measurement range setting unit 12d, a low pass filter use selection unit 12e, A coupling selection unit 12f, a measurement range magnification setting unit 12g, a 0 position (zero position) setting unit 12h, a trigger use selection unit 12i, a trigger condition setting unit 12j, a waveform monitor display unit 12k, and the like are configured. Each CH setting tab screen 12 has an operation condition (measurement condition) for each channel when the sampling data D1 is generated by the A / D conversion unit 2, and the control unit 4 generates the recording target data D2 based on the sampling data D1. This is a screen for setting the operating conditions for each channel, the operating conditions of the trigger signal output unit 3, and the like.

  On each CH setting tab screen 12, the channel selection unit 12 a is operated to display any one of CH 1, CH 2, CH 3, and CH 4 on the selected channel display unit 12 b, thereby selecting a channel for setting operation conditions. . When the channel displayed on the selected channel display unit 12b is changed, the display of the setting items 12c to 12j is switched in conjunction with it, and the setting items for each channel can be set.

  The channel use selection unit 12c is a part that selects whether or not to use the corresponding channel. The use of the corresponding channel is selected by adding a check mark to the channel use selection unit 12c.

  The measurement range setting unit 12d is a part that sets a measurement range that is a ratio in the measurement value axis (vertical axis) direction when the sampling data D1 is generated. For example, when the condition of “50V / div” is set in the measurement range setting unit 12d, the waveform display unit 31 displays the signal waveform W in the measurement range of 50V per 1 div in the measurement value axis direction. In addition, sampling data D1 is generated.

  The low-pass filter use selection unit 12e is a part for selecting ON / OFF of a function excluding high-frequency noise using a filter that passes a low-frequency signal when generating the sampling data D1.

  The coupling selection unit 12f is a part for setting the type of electrical parameter to be measured.

  The measurement range magnification setting unit 12g displays the display magnification in the measurement value axis direction when the control unit 4 displays the signal waveform W on the waveform display unit 31 based on the recording target data D2 recorded in the data recording unit 9. It is a part to set. For example, in the state where the condition (equal magnification) of “x1” is set in the measurement range magnification setting unit 12g, the signal waveform is measured with the measurement range obtained by multiplying the measurement range per 1 div set by the measurement range setting unit 12d. W is displayed.

  The zero position setting unit 12h is a part for setting the zero position in the measurement axis direction when the control unit 4 displays the signal waveform W on the waveform display unit 31. % "Is set to the zero position, but the zero position can be changed when the positive waveform is to be observed or the negative waveform is observed.

  In the example shown in FIG. 5, the direct current voltage (DC) is recorded and displayed at a display magnification of 1 (x1) so that the 0 V position is located at the center in the vertical direction of the waveform display unit 31 in the measurement range of 50 V per div. This is a state in which the processing to be performed is set for the corresponding channel (CH1 in this example).

  The trigger use selection unit 12i is a part for selecting ON / OFF of trigger output processing for causing the trigger signal output unit 3 to output a trigger signal (start trigger signal) St. When the trigger function is specified for any of the channels, the trigger use selection unit 12i is set to ON.

  The trigger condition setting unit 12j is a part that sets conditions for trigger output processing for the corresponding channel so that the trigger signal output unit 3 outputs the trigger signal St using, for example, an input signal of any channel as a trigger source. The trigger condition setting unit 12j includes a trigger type selection unit 12j1, a trigger level setting unit 12j2, a slope setting unit 12j3, an external trigger use selection unit 12j4, a filter use selection unit 12j5, and the like. The trigger type selection unit 12j1 is a part for designating the type of trigger output processing. The trigger type selection unit 12j1 includes a type selected (designated) by the operator from various trigger output processes such as “voltage drop trigger”, “window trigger”, and “level trigger” shown in FIG. The trigger output process is displayed. “Voltage drop trigger” is a process for generating a trigger when the voltage value falls below a set value (level, threshold). The “window trigger” is a process for generating a trigger when the voltage value enters or falls out of a range between a set upper limit value and lower limit value. “Level trigger” is a process for generating a trigger when a set voltage value is crossed at a rising edge or a falling edge. A setting value for outputting the trigger signal St is set in the trigger level setting unit 12j2. The slope setting unit 12j3 selects whether to output the trigger signal St when the condition set by the trigger level setting unit 12j2 is satisfied in either manner of exceeding the set value (upward) or below (downward) Is done. In the external trigger use selection unit 12j4, presence / absence (ON / OFF) of use of a trigger signal from an external device is selected. The filter use selection unit 12j5 selects ON / OFF of the noise removal processing for the input signal to be compared with the condition set by the trigger level setting unit 12j2.

  In the example shown in FIG. 5, the voltage level of the sampling data D1 generated by the A / D converter 2 of the corresponding channel (CH1 in this example) is monitored, and the trigger level setting unit 12j2 of the trigger condition setting unit 12j. A state is shown in which the level trigger that outputs the trigger signal St from the trigger signal output unit 3 when the voltage level (100 V in this example) set upward is exceeded is selected. In the example shown in FIG. 5, the external trigger is OFF and the filter is OFF.

  The waveform monitor display unit 12k provided on each CH setting tab screen 12 is currently set to each input signal Si in a state where the input signal Si is input to the A / D conversion unit 2 of each channel. This is a part where a monitor signal waveform for assisting setting of the operation condition is displayed based on the monitor display data generated by processing under the operation condition of the waveform recording apparatus 1.

  In this embodiment, each CH setting tab screen 12 is set with the same operating conditions as the time axis range setting unit 11a, time axis magnification setting unit 11b, and recording length setting unit 11c in the measurement setting tab screen 11. Items 121, 12m, and 12n are provided, and these setting items can also be set from each CH setting tab screen 12.

(3) All CH list tab screen All CH list tab screen 13 shown in FIG. 6 has a measurement range, low pass filter use selection, coupling selection, measurement range magnification, and zero position for each channel of CH1, CH2, CH3, and CH4. The parts 13a, 13b, 13c, and 13d to which each can be set are displayed in a list. The contents that can be set in each setting item on the all CH list tab screen 13 are the same as the contents that can be set in the corresponding setting item on each CH setting tab screen 12. In each CH setting tab screen 12, each channel is switched and displayed, and the setting is performed. On the all CH list tab screen 13, while simultaneously viewing the state of each setting item of all channels, Each setting item can be set.

(4) Trigger tab screen The trigger tab screen 14 shown in FIG. 7 is a list of parts 14a, 14b, 14c, and 14d that can set trigger use selection, trigger conditions, and the like for each channel of CH1, CH2, CH3, and CH4. Is displayed. The contents that can be set in each setting item on the trigger tab screen 14 are the same as the contents that can be set in the corresponding setting item on each CH setting tab screen 12. In each CH setting tab screen 12, each channel is switched and displayed for setting, but on the trigger tab screen 14, each setting item is viewed while simultaneously viewing the state of each setting item of all channels. Can be set.

  As described above, the operation conditions of a plurality of items of the waveform recording apparatus 1 can be set on the arbitrary setting screen 10.

  Each setting item on the arbitrary setting screen 10 may be selected from a plurality of predetermined options, or an arbitrary value may be input according to a certain rule. These selections and inputs are performed by operating the operation switches in the operation unit 6.

2-2. Measurement Operation Next, when the start switch of the operation unit 6 is operated, the main control unit 8 controls the trigger signal output unit 3 and the control unit 4 to start the recording process of the recording target data D2, and as shown in FIG. The waveform display screen 30 is displayed on the display unit 7. The waveform display screen 30 includes a waveform display unit 31, a scale display 32, a trigger level display 33, a time axis range display unit 34, a time axis magnification display unit 35, a recording length display unit 36, and the like.

  The waveform display unit 31 displays a signal waveform W based on the recording target data D2 recorded in the data recording unit 9 when the recording of the recording target data D2 to the data recording unit 9 is started. The scale display 32 indicates the voltage level of the signal waveform W (in this example, the signal waveform of the input signal Si input to CH1) displayed on the waveform display unit 31. Further, the trigger level display 33 displays the set trigger level in association with the signal waveform W (in this example, in association with the signal waveform Wb1 of CH1 in which the level trigger is set). FIG. 8 shows an example in which only the signal waveform of the input signal Si input to CH1 is displayed. However, when other channels are also used, according to the set operating conditions, CH2 is displayed. , CH3, CH4, the signal waveform of the input signal Si can be displayed simultaneously.

  The time axis range setting unit 34 displays the set value of the time axis range set on the above-described arbitrary setting screen 10, and the time axis magnification setting unit 35 sets the above-described arbitrary setting screen 10. The time axis magnification setting value is displayed. Further, the CH condition setting unit 36 displays the setting values set on the arbitrary setting screen 10 described above for the channel selected by the CH selection unit 37.

  The trigger signal output unit 3 instructed to start the recording process by the main control unit 8 determines whether or not the sampling data D1 output from the A / D conversion unit 2 exceeds the set trigger level (20 V in this example). To monitor. Then, when the trigger signal St is output, the control unit 4 generates the recording target data D2 according to the set conditions based on the sampling data D1 sequentially stored in the memory 5, and the generated recording target data D2 is sequentially recorded in the data recording unit 9 and output to the main control unit 8. Further, when the recording target data D2 is output from the control unit 4, the main control unit 8 determines that the recording process of the recording target data D2 has started, and displays a waveform based on the output recording target data D2. Data D4 is generated, and as shown in FIG. 8, the signal waveform W of the input signal Si in which the recording target data D2 is recorded in the data recording unit 9 at that time is displayed on the waveform display unit 31. Thereafter, when the set recording time has elapsed, the main control unit 8 controls the control unit 4 to stop generating the recording target data D2 (recording process for the data recording unit 9). Thereby, an example recording process is completed.

2-3. Problems in Arbitrary Setting Here, the waveform recording apparatus 1 needs to set the operation conditions of a plurality of items to what seems to be optimal according to the specific measurement purpose of interest. As an example, when the set value of the time axis range is too short (when the measurement time length per 1 div is too short), the display of the signal waveform W is in an incomplete state of less than one cycle. In such a case, it is necessary to change the set value of the time axis range (time / div) to a larger value. As an example, when the set value of the measurement range of any channel is too large, the amplitude of the signal waveform W becomes small. In such a case, it is necessary to change the set value of the measurement range (value / div) of the corresponding channel to a smaller value.

  For example, a case where a commercial power supply of 100 V and 50 Hz is measured will be further described as an example. When operating conditions of a plurality of items of the waveform recording apparatus 1 are set on the arbitrary setting screen 10 for the measurement purpose, the operator For example, it is necessary to set carefully considering the following points.

  First, in each CH setting tab screen 12 or all CH list tab screen 13, it is necessary to surely add a check mark to the channel to be used.

  In addition, in each CH setting tab screen 12 or all CH list tab screen 13, taking into consideration the maximum number of divs (number of cells) on the vertical axis that can be displayed on the display unit 7, the measurement range of each channel (voltage value per div) Need to be set. Since the waveform recording apparatus 1 of the present embodiment can display a maximum of 10 div, it is desirable to set the measurement range to “50 V / div” and the measurement range magnification to “× 1”. Also, it is necessary to change the zero position depending on whether you want to observe the positive waveform or the negative waveform. However, if you want to observe positive and negative evenly, set the "50%" position as the zero position. It is desirable to set.

  In addition, in the measurement setting tab screen 11 or each CH setting tab screen 12, the time axis range (in consideration of how many seconds should be set to 1 div of the time axis based on the frequency of the measurement signal 50 Hz, the waveform can be easily observed. 1 div) is required to be set. In the waveform recording apparatus 1 of the present embodiment, it is desirable to set the time axis range to about “5 ms / div” or “10 ms / div” and set the time axis magnification to “× 1” at 50 Hz. Also, on each CH setting tab screen 12 or all CH list tab screen 13, depending on whether you want to observe a waveform with high-frequency noise superimposed or want to observe a waveform without noise, turn on / off the low-pass filter for each channel. Must be selected.

  Also, on each CH setting tab screen 12 or trigger tab screen 14, select ON / OFF of the trigger function, and when the trigger function is ON, select a start trigger (which channel is the trigger source), It is necessary to select ON / OFF of the external trigger, set the numerical value of the trigger setting value (level), select whether the slope is upward or downward, and select ON / OFF of the filter.

  Further, in the measurement setting tab screen 11, it is necessary to set the recording length while considering the setting of the time axis range according to how many waveforms are desired to be recorded. For example, when it is desired to record 5 waveforms, the recording length must be set to 20 div when the time axis range is 5 ms / div, and the recording length must be 10 div when the time axis range is 10 ms / div. There is. Thereby, in any case, recording for five waveforms becomes possible.

  As described above, even when measuring a general commercial power source as a measurement purpose that can be performed by using the waveform recording apparatus 1, if an operation condition of a plurality of items is set by arbitrary setting, a plurality of screens are displayed. It is necessary to search for setting items and make appropriate settings while calculating as necessary. Therefore, for an operator unfamiliar with this type of operation, it is a complicated and difficult operation while referring to an instruction manual. In addition, if the setting is not appropriate, the waveform cannot be recorded and displayed in the optimum state as described above, and in some cases, the measurement must be repeated.

3. Simple Setting Next, characteristic simple setting in the present embodiment will be described. According to the simple setting, the operation conditions of a plurality of items of the waveform recording apparatus 1 can be easily set for a general measurement purpose that can be performed using the waveform recording apparatus 1.

  When performing arbitrary setting, the simple setting screen 64 as the setting screen shown in FIG. 3 is displayed on the display unit 7 by pressing the simple setting switch 64 (FIG. 2) of the operation unit 6. In the present embodiment, it is assumed that the specific measurement purpose of the waveform recording apparatus 1 prepared so that simple setting can be performed is “measuring commercial power”.

  As will be described in detail later, a plurality of general measurement purposes using the waveform recording apparatus 1 that enables simple setting may be prepared. In that case, by pressing the simple setting switch 64 (FIG. 2), first, the main purpose control unit 8 can display a measurement purpose selection screen for selecting a measurement purpose on the display unit 7. Then, by selecting the measurement purpose on the measurement purpose selection screen by the operation on the operation unit 6, the simple setting screen 20 prepared for the selected measurement purpose is displayed on the display unit 7. can do.

  As shown in FIG. 3, the simple setting screen 20 displays text representing the measurement contents when measuring the commercial power supply so as to fit on one screen. And, a part of the text representing the measurement content can be changed by selecting from multiple choices, and the measurement content can be changed by changing the content of that part (changeable part) Yes. That is, the operator generally changes the contents of the changeable part and completes the text displayed on the simple setting screen 20 in accordance with the desired measurement contents. Can be determined to be in line with the desired measurement content from those prepared in advance. Then, at the time when the text for displaying the measurement content displayed on the simple setting screen 20 is completed, each of the changeable portions among the operating conditions of a plurality of items that need to be set in order to measure the commercial power supply. The operation condition related to the selected option is set to the operation condition related to the selected option. On the other hand, although it is not related to each option of the changeable part, the operating conditions that need to be set to measure the commercial power supply are predetermined operations related to the measurement of the commercial power supply. Set to the condition.

  More specifically, the simple setting screen 20 shown in FIG. 3 displays columns of “1. Channel setting”, “2. Trigger setting”, “3. Recording length setting”, and “4. Repeat and save setting”. Is done.

  In the “1. Each channel setting” column, channel use selection units 21 a, 21 b, 21 c, and 21 d that select whether or not each channel of CH 1, CH 2, CH 3, and CH 4 is used are provided. Each channel use selection unit 21 a, 21 b, 21 c, 21 d can select “use” or “do not use” as a plurality of options by operating the operation unit 6. Thus, taking CH1 as an example, for example, “Channel 1“ Use ”” or the like is displayed, and the operator can intuitively recognize that it is a part where the presence or absence of use of CH1 is set. Either “use” or “not use” can be selected according to the measurement contents. Then, when the option “Use” of each channel use selection unit 21a, 21b, 21c, 21d is selected, a check mark is added to the corresponding channel use selection unit 12c on, for example, each CH setting tab screen 12 of the arbitrary setting screen 10 As in the case, the options and the operation conditions are related to each other so that the corresponding channel is set to be used. On the other hand, the option “not used” is associated with an operating condition that the corresponding channel is not used.

  Further, in the column of “1. Each channel setting”, a voltage selection unit 22 and a frequency selection unit 23 for selecting the contents of the voltage and frequency of the commercial power source to be measured are provided. The voltage selection unit 22 can select “100 V” or “200 V” as a plurality of options by operating the operation unit 6. Further, the frequency selection unit 23 can select “frequency 50 Hz” or “frequency 60 Hz” as a plurality of options by operating the operation unit 6. Thus, for example, when measuring a commercial power supply of 100 V and 50 Hz, for example, “Measurement signal:“ Measure commercial power of “100 V” ”and“ Frequency 50 Hz ”” is displayed, and the operator intuitively uses the commercial power supply. It can be recognized that the power source voltage and frequency conditions are set, and the contents of the voltage selection unit 22 and the frequency selection unit 23 can be selected so as to match the conditions of the commercial power source to be measured. Then, when the option “100 V” of the voltage selection unit 22 is selected, for example, when “50 V / div” is set in the measurement range setting unit 12 d of the corresponding channel in each CH setting tab screen 12 of the arbitrary setting screen 10. The options and the operating conditions are related so that the measurement range (common to all channels in this example) is set to “50 V / div”. On the other hand, an operation condition in which the measurement range (common to all channels in this example) is “100 V / div” is associated with the option “200 V” of the voltage selection unit 22. When the option “50 Hz” of the frequency selection unit 23 is selected, the time axis range is set in the same manner as when “5 ms / div” is set in the time axis range setting unit 11a on the measurement setting tab screen 11 of the arbitrary setting screen 10, for example. Is set to “5 ms / div” so that the option and the operation condition are related to each other. In this embodiment, the option “60 Hz” of the frequency selection unit 23 is associated with an operation condition in which the time axis range is “5 ms / div”. Other operating conditions may be associated with the option “60 Hz”.

  Also, in the “2. Trigger setting” column, there are provided trigger use selection units 24a, 24b, 24c, and 24d that select whether or not to use triggers for each channel of CH1, CH2, CH3, and CH4. Each of the trigger use selection units 24 a, 24 b, 24 c, and 24 d can select “use” or “do not use” as a plurality of options by operating the operation unit 6. Thus, taking CH1 as an example, for example, “use channel 1 trigger” is displayed, and the operator intuitively recognizes that this is a part for setting whether or not to use the trigger for CH1. It is possible to select either “use” or “not use” depending on the desired measurement content. When the option “use” of the trigger use selection units 24a, 24b, 24c, and 24d is selected, a check mark is added to the corresponding trigger use selection unit 12i on, for example, each CH setting tab screen 12 of the arbitrary setting screen 10. In the same manner as in the case where the corresponding channel is used, the corresponding channel is set to be used, and the corresponding trigger condition setting unit 12j is set to the trigger conditions of “level (trigger type)”, “0 V (level)”, and “rise (slope)”. The options and the operating conditions are related to each other so that the setting is the same as that in the case. In the present embodiment, the measurement is started when at least one of the measurement signals of each channel satisfies the trigger condition. On the other hand, the option “not used” is associated with an operating condition that the trigger is not used for the corresponding channel.

  In the “3. Recording length setting” column, a waveform and waveform number selection unit 25 is provided. The waveform and number-of-waveform selection unit 25 may select, for example, “50 Hz waveform is 2 or more waveforms”, “50 Hz waveform is 5 or more waveforms”, “60 Hz waveform is 2 or more waveforms”, or “60 Hz waveform is 5 or more waveforms”. Can be selected by an operation in the operation unit 6. Thus, for example, when measuring 5 or more waveforms in measurement of a commercial power supply of 100 V and 50 Hz, for example, “Measure input signal“ 50 Hz waveform 5 or more waveforms ”” is displayed, and the operator is intuitive. It is possible to recognize that this is a part where the number of waveforms to be observed is set, and to select the waveform and the contents of the waveform number selection unit 25 so as to match the number of waveforms to be measured. For example, when the option “5 or more 50 Hz waveforms” is selected in the waveform and number-of-waveform selection unit 25, the recording length setting unit 11 c of the optional setting screen 10 is set to “20 div” in the recording length setting unit 11 c, for example. Similarly, the option and the operation condition are related so that the recording length is set to “20 div”. Thereby, in the case of 50 Hz, since 5 ms / div is set as the time axis range, recording for five waveforms becomes possible. Similarly, for other waveforms and options for the number of waveforms, an appropriate recording length is calculated in advance so that waveforms corresponding to the number of waveforms corresponding to the time axis range are recorded. It is attached.

  In addition, a measurement number selection unit 26 is provided in the column of “4. The measurement number selection unit 26 can select “only once” or “repeat” as a plurality of options by operating the operation unit 6. As a result, for example, “Measure once only with the set contents” is displayed, and the operator can recognize that it is a part where the number of measurements is set intuitively, according to the desired measurement contents. The number of measurements can be selected. Then, for example, when the option “only once” is selected in the number-of-measurements selection unit 26, the set operation condition is set in the same manner as when “single” is set in the repeated recording setting unit 11 d on the measurement setting tab screen 11 of the arbitrary setting screen 10. The options and the operating conditions are related so that the measurement is performed only once. Similarly, when repeat (or other number of measurements) is selected, each option is associated with an operation condition so that the measurement is repeated (or measured for the corresponding number of times).

  Further, a “presence / absence and storage setting” column includes a storage presence / absence selection unit 27a, a recording medium selection unit 27b, and a recording method selection unit 27c. The storage presence / absence selection unit 27a can select “save” or “do not save” as a plurality of options by an operation on the operation unit 6. Further, the recording medium selection unit 27 b can select “CF (Compact Flash (registered trademark) memory card)” or “USB memory” as a plurality of options by operating the operation unit 6. In addition, the recording method selection unit 27 c can select “binary” or “text” as a plurality of options by operating the operation unit 6. Thus, for example, if you want to save the measured data in the CF in binary format, “Save the measured data” and “Save in the CF” in “binary” format will be displayed. It is possible to recognize that this is a part for setting a recording form, and it is possible to save data measured in a desired recording form.

  The simple setting screen 20 is provided with a measurement start instruction unit 28 for confirming the measurement contents. The display content of the measurement start instructing unit 28 is also set to, for example, “Start measurement above” so that the operator can easily recognize that it is a part where the setting operation is intuitively ended and measurement is started. ing. After completing the text in each column of “1. Channel setting”, “2. Trigger setting”, “3. Recording length setting” and “4. Repeat and save setting” according to the desired measurement content Then, the measurement start instruction unit 28 is selected and pressed by an operation on the operation unit 6. As a result, the main control unit 8 relates to each option of the changeable portion in each of the above-mentioned operation conditions among a plurality of operation conditions that need to be set when the waveform recording apparatus 1 is used for measurement of commercial power. The operating condition being stored is a RAM built in the main control unit 8 as the operating condition storage unit so as to set the operating condition associated with the option displayed on the simple setting screen 20 at that time. The operating condition memory 82 that is configured stores the setting of the operating condition. On the other hand, the main control unit 8 correlates with each option of the changeable portion in each of the above-mentioned operation conditions among a plurality of operation conditions that need to be set when the waveform recording apparatus 1 is used for measurement of commercial power. The operating conditions that are not specified are predetermined operating conditions related to the measurement of the commercial power source as a specific measurement purpose, for example, the measurement range magnification is “× 1”, the zero position is “50%”, and the time axis The operation condition setting is stored in the operation condition memory 82 so that the magnification is “× 1”, the low-pass filter is “ON”, the external trigger is “OFF”, and the filter in the trigger function is “OFF”.

  As described above, according to the present invention, the operating condition setting method in the waveform recording apparatus 1 that records and displays the waveform of the input signal in accordance with a plurality of preset operating conditions uses the waveform recording apparatus 1. Displays text that describes the measurement content for a specific measurement purpose out of at least one measurement purpose that can be performed, at least a part of which can be changed by selecting from multiple options Having a stage to do. In this embodiment, the specific measurement purpose is to measure a commercial power source. In this embodiment, the text representing the measurement contents is, for example, “use a specific channel, measure 100 V, 50 Hz commercial power supply for at least 5 waveforms without triggering, and save in CF in binary format. The measurement content such as “is displayed in an arrangement mode that is easy for the operator to see. The text representing the measurement content represents specific measurement content for a specific measurement purpose such as measurement of a commercial power supply that the operator wants to perform using the waveform recording apparatus 1. Such a sentence typically does not directly represent the contents of the setting items of the operating conditions of the waveform recording apparatus 1, but the contents of the setting items of the operating conditions of the waveform recording apparatus 1 are partly included therein. What is expressed directly may be included. For example, the sentence “save measured data in CF in binary format” as described above represents the measurement contents and also directly represents the contents of the setting items of the operating conditions of the waveform recording apparatus 1. . It is only necessary for the operator to easily understand the measurement contents for a specific measurement purpose.

  Further, according to the present invention, the operating condition setting method in the waveform recording apparatus 1 includes the operating condition that is determined in advance in relation to each of the plurality of options of the text among the operating conditions of the plurality of items. In addition, the operation conditions that are not related to the multiple options of the sentence among the operation conditions of the plurality of items are determined in advance in relation to the specific measurement purpose. By setting the operation condition, there is a step of setting a plurality of operation conditions that need to be set for the specific measurement purpose. In this embodiment, the specific measurement purpose is to measure a commercial power source. In this embodiment, the ratio (time / div) in the time axis (horizontal axis) direction of the waveform of the input signal, the ratio (value / div) in the measurement value axis (vertical axis) direction, or both of these values are calculated. A plurality of operating conditions are determined in advance in relation to each of the plurality of options of the sentence. On the other hand, the zero position in the measurement value axis (vertical axis) direction of the input signal waveform, the display magnification in the measurement value axis direction, the display magnification in the time axis (horizontal axis) direction, etc. are related to the multiple choices in the above sentence. It is not determined and is determined in advance in connection with the measurement of the commercial power source as a specific measurement purpose.

  Further, according to the present invention, the waveform recording apparatus 1 that records and displays the waveform of the input signal in accordance with a plurality of preset operation conditions has an operation condition storage unit that stores the settings of the operation conditions of the plurality of items. In this embodiment, the operation condition storage unit is an operation condition memory 82 constituted by a RAM built in the main control unit 8. Further, the waveform recording apparatus 1 includes first setting screen information for displaying a first setting screen (arbitrary setting screen) 10 (11 to 14) for arbitrarily setting each of a plurality of operation conditions. And a second setting screen (simple setting screen) 20 for setting operation conditions of a plurality of items for a specific measurement purpose among at least one measurement purpose that can be performed using the waveform recording apparatus 1. A setting screen information storage unit in which second setting screen information is stored. In this embodiment, the setting screen information storage unit is a setting screen memory 81 configured by a ROM built in the main control unit 8.

  The waveform recording apparatus 1 also has a display unit 7 that displays first and second setting screens. Further, the waveform recording apparatus 1 displays the first setting screen (arbitrary setting screen) 10 (11 to 14) on the display unit 7 based on the first setting screen information, and based on the second setting screen information. And a display control unit for displaying the second setting screen (simple setting screen) 20 on the display unit 7. In the present embodiment, the main control unit 8 has a function of a display control unit. Typically, the second setting screen (simple setting screen) 20 is displayed on one screen.

  In addition, the waveform recording apparatus 1 includes setting screen selection means for inputting a signal for selectively displaying one of the first and second setting screens on the display unit 7 to the display control unit 8. In the present embodiment, the setting screen selection means includes a setting switch 63 and a simple setting switch 64 provided in the operation unit 6. Moreover, the waveform recording apparatus 1 has a setting control unit that stores operation condition information for setting operation conditions of a plurality of items in the operation condition storage unit based on the contents specified on the first and second setting screens. In the present embodiment, the main control unit 8 has a function of a setting control unit.

  The waveform recording apparatus 1 of the present invention embodies the above-described operating condition setting method of the present invention, and the second setting screen (simple setting screen) 20 uses the waveform recording apparatus 1. A text that describes the measurement content for a specific measurement purpose out of at least one measurement purpose that can be performed, at least a part of which can be changed by selecting from multiple options Is done. In addition, when the second setting screen (simple setting screen) 20 is displayed on the display unit 7, the setting control unit 8 determines in advance in relation to each of the plurality of options of the sentence among the operation conditions of the plurality of items. Set to the options displayed in the text, and the operating conditions that are not related to the options of the text among the operating conditions of the plurality of items are set to the specific measurement. The operation condition information set to the operation conditions determined in advance in relation to the purpose is stored in the operation condition storage unit (operation condition memory) 82.

  According to the operation condition setting method and the waveform recording apparatus 1 in the waveform recording apparatus 1, the text displayed on the simple setting screen 20 prepared for general measurement purposes such as measurement of commercial power is completed. By doing so, it is possible to determine the measurement content that the operator wants to perform. Therefore, it is possible to appropriately set operation conditions that are determined in advance so as to match the measurement contents without directly being aware of the contents of the operation conditions of the plurality of items of the waveform recording apparatus 1. Thereby, the difference between the content that the operator wants to measure and the content that is actually measured can be reduced. For example, when setting is performed on the arbitrary setting screen 10, for the general measurement purpose such as measurement of commercial power supply, the operator must set the time axis range and the measurement range according to the contents to be measured. It was n’t. On the other hand, when setting is performed on the simple setting screen 20, if the operator knows the content to be measured such as how many waveforms of the commercial power supply of what V and what Hz, the simple setting screen 20 By completing the displayed text to represent the measurement content, it is set to appropriate operating conditions determined in advance by the manufacturer of the waveform recording apparatus 1 without considering the time axis range or measurement range. can do. Therefore, for example, even an operator who first touches the waveform recording apparatus 1 in which complicated operation conditions can be set is necessary for the general measurement purpose such as measurement of a commercial power source. Conditions can be easily set. The simple setting screen 20 is selectively displayed so as to be distinguished from the arbitrary setting screen 10 and is typically displayed on a single screen, so there is no need to find a setting item.

  In this embodiment, the measurement of a commercial power source is specifically described as an example for a specific measurement purpose. However, a general measurement purpose assumed to be performed using the waveform recording apparatus 1 is a commercial measurement. It is not limited to measuring the power supply. For any assumed measurement purpose, a simple setting screen can be prepared as in the above-described embodiment. For example, monitoring a voltage drop such as a power failure is a general measurement purpose.

  In this embodiment, the waveform recording apparatus having four measurement channels has been described as an example. However, the present invention is not limited to this, and the waveform having one measurement channel (single A / D converter) is used. The present invention can be applied to a recording apparatus and a waveform recording apparatus having five or more measurement channels (five or more A / D conversion units). Moreover, although the example which measures the electrical parameter of a voltage was demonstrated as measurement data in this invention, it is not restricted to this, The measurement data which measured various electrical parameters, such as an electric current, a frequency, and a phase, are contained in this. In addition, data obtained by converting parameters such as temperature, humidity, and wind power into voltage are also included in the measurement data in the present invention. Furthermore, although the waveform recording apparatus having the display unit has been described as an example, a configuration in which the above setting screen, waveform display screen, and the like are displayed on a display apparatus as an external apparatus may be employed. In addition, the waveform recording apparatus having a data recording unit (integrated configuration) has been described as an example, but a configuration in which recording target data is recorded in various recording apparatuses as external apparatuses may be employed.

DESCRIPTION OF SYMBOLS 1 Waveform recording device 6 Operation part 7 Display part 8 Main control part 9 Data recording part 10 Arbitrary setting screen (1st setting screen)
20 Simple setting screen (second setting screen)
30 Waveform display screen D1 Sampling data D2 Data to be recorded D3 Setting screen display data D4 Waveform display data Si input signal St trigger signal W signal waveform

Claims (8)

In the operation condition setting method in the waveform recording apparatus for recording and displaying the waveform of the input signal in accordance with a plurality of preset operation conditions,
Of the at least one measurement purpose that can be performed using the waveform recording apparatus, the text represents the measurement content for a specific measurement purpose, at least a part of which can be changed by selecting from a plurality of options Displaying the sentence that is
The operation conditions predetermined in relation to each of the plurality of options of the sentence among the operation conditions of the plurality of items are set to those of the options displayed in the sentence, and the operation conditions of the plurality of items The operation conditions of the plurality of items are set by setting the operation conditions that are not related to the plurality of options of the sentence to the operation conditions that are determined in advance in relation to the specific measurement purpose. And the stage of
A method for setting operating conditions in a waveform recording apparatus.   The operating conditions predetermined in relation to each of the options displayed in the sentence are the ratio in the time axis direction when recording and displaying the waveform of the input signal, the ratio in the measurement value axis direction, or both The method for setting operating conditions in the waveform recording apparatus according to claim 1, comprising:   The method for setting operating conditions in the waveform recording apparatus according to claim 1, wherein the specific measurement purpose is measurement of a commercial power source. In the waveform recording apparatus for recording and displaying the waveform of the input signal according to the operation conditions of a plurality of items set in advance,
An operation condition storage unit that stores operation condition settings of the plurality of items;
First setting screen information for displaying a first setting screen for arbitrarily setting each of the operation conditions of the plurality of items, and at least one measurement purpose that can be performed using the waveform recording apparatus A setting screen information storage unit storing second setting screen information for displaying a second setting screen for setting operation conditions of the plurality of items for a specific measurement purpose,
A display for displaying the first and second setting screens;
Display control for displaying the first setting screen on the display unit based on the first setting screen information and for displaying the second setting screen on the display unit based on the second setting screen information And
A setting screen selection means for inputting a signal for selectively displaying one of the first and second setting screens on the display unit to the display control unit;
A setting control unit for storing operation condition information for setting operation conditions of the plurality of items in the operation condition storage unit based on the contents specified on the first and second setting screens;
Have
The second setting screen is a sentence representing measurement contents for a specific measurement purpose among at least one measurement purpose that can be performed using the waveform recording apparatus, and at least a part of the second setting screen includes a plurality of sentences. The text that can be changed by selecting from the choices of is displayed,
When the second setting screen is displayed on the display unit, the setting control unit is determined in advance in relation to each of the plurality of options of the sentence among the operation conditions of the plurality of items. Are set to those of the options displayed in the sentence, and the operation conditions that are not related to the plurality of options of the sentence among the operation conditions of the plurality of items are related to the specific measurement purpose. The waveform recording apparatus, wherein the operation condition information set to the operation conditions determined in advance is stored in the operation condition storage unit.   When the first setting screen is displayed on the display unit, the setting control unit arbitrarily sets the operation conditions of the plurality of items based on the contents specified on the first setting screen. The waveform recording apparatus according to claim 4, wherein information is stored in the operation condition storage unit.   6. The waveform recording apparatus according to claim 4, wherein the second setting screen is displayed on a single screen.   The operating conditions predetermined in relation to each of the options displayed in the sentence are the ratio in the time axis direction when recording and displaying the waveform of the input signal, the ratio in the measurement value axis direction, or both The waveform recording apparatus according to claim 4, comprising:   The waveform recording apparatus according to claim 4, wherein the specific measurement purpose is measurement of a commercial power source.

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