MR8740、MR8741_user_manual_eng_20191016H.pdf - 第362页

17.5 Built-In Functions 350 Monitor functions *1:When an LCD monitor is co nnected or when displaying the Waveform screen via a computer using the HTTP function Position Display (VIEW) Functions *1: When an LCD monitor i…

17.5 Built-In Functions

349

Chapter 17 Specifications

Calculation-related functions

Waveform calculation function

Memory division function

Cursor measurement functions

17.5 Built-In Functions

Calculation functions Memory Function supported

Number of calculations Up to 16 calculations can be applied to any channel

Calculation range Whole range, between A/B cursors or after trigger

Calculation types Average, RMS value, P-P value, maximum value, time to maximum value, minimum value,

time to minimum value, period, frequency, rise time, fall time, standard deviation, squared value,

X-Y squared value, time to level, level at time, pulse width, duty ratio, pulse count,

four basic arithmetic operations, time difference, phase difference, High level, Low level

Auto-save calculation results After measuring, automatically saves to USB memory stick (text format)

Statistical calculation First, average, maximum, or minimum

Judgment of calculation re-

sults

Calculation results can be judged based on the specified maximum/minimum value

Stop condition: GO, NG, GO&NG

Evaluation output Outputs GO or NG judgment signal via external control terminals

Open collector output

With 5 V voltage output, active low, Low output level 0 V to 0.5 V (current of 15 mA)

Pulse width: 1.8 ms or more

Calculation support function Memory Function

Number of calculations Up to a maximum of 16 calculations for desired channels

Calculation range All range, between A/B cursor selections

Calculation record length Up to 2,000 div

Operators Four arithmetic operations, absolute vales, indexes, common logarithms, square root, moving av-

erage, differential (primary, secondary)

Integral (primary, secondary), parallel displacement of time axis direction, trigonometric function,

reverse trigonometric function, integration time correction based on NPLC setting

Automatic saving of calcula-

tion results

After measurement, automatic saving to USB memory stick (binary, .txt file)

Division support function Memory Function

Number of memory divisions 2 to 1024

Divided record length Can be set as desired (but depends on the number of divisions)

Sequential saving Possible by specifying start and end blocks

Sequential saving dead time When block display is OFF:

1 to 8 samples (time axis 5 µs/div to 20 µs/div)

1 sample (time axis 50 µs/div or more)

Multi-block saving Saving of waveforms is possible by specifying the desired blocks of divisions

Block display Display can be set to ON or OFF

Block overlaying Desired blocks or all blocks

Cursor suooerting Functions Memory function, recorder function, FFT function

Number of cursors Two (Cursors A and B)

Cursor types Line (vertical or horizontal) and Trace

Cursor movements A Cursor, B Cursor, A&B Cursors

Measurement function A Cursor : Amplitude at each cursor, time from trigger event

AB Cursor: Time, amplitude and frequency (period) differences between cursors

Cursor-supported channels All channels (default), or any specified channel

Included functions Partial saving (specified time span)

17.5 Built-In Functions

350

Monitor functions

*1:When an LCD monitor is connected or when displaying the Waveform screen via a computer using

the HTTP function

Position Display (VIEW) Functions

*1: When an LCD monitor is connected or when displaying the Waveform screen via a computer using

the HTTP function

Waveform Evaluation Function (MR8741 Only)

Waveform Generation Function

The detailed hardware functions conform to the generator module specifications of Models MR8790, MR8791, and U8793

Monitor display*

Level monitor: Display the level and numerical value by selecting the level monitor with the DISP key

DMM display: Display the numerical values by pressing the DISP key

Numerical value display*

Instantaneous value display, with hold function

Level monitor sampling 10 kS/s (fixed)

Refresh rate 0.5 s or more, depends on the NPLC settings when using the Model MR8990 Digital Voltmeter Unit

Display function*

Position: Displays the current position with respect to the entire recording length

Blocks: Memory division blocks (When memory division is ON

Position display*

Currently displayed position (linked to scroll), positions of A and B cursors , trigger position,

waveform search results position

Block display*

(only when using memory di-

vision)

Block usage status (When memory division is ON)

Past waveform history status (When memory division is OFF)

Display of display block for all blocks

Jump function Jump to trigger position/cursor position

Jump to desired block (When memory division is ON)

Jump to past waveform (When memory division is OFF)

Jump to waveform search position

Waveform evaluation

functionality

Compares memory (Y-T waveform, X-Y waveform) and FFT-created waveform area with captured

waveforms and determines whether the captured waveform falls inside or outside the correspond-

ing area.

Evaluation modes Out: NG (fail) if any part of the waveform falls outside the area.

All out: NG (fail) if the entire waveform falls outside the area.

Evaluation stop conditions GO, NG, GO&NG

Printer output can be generated or the waveform can be saved when evaluation stops.

(Using the automatic print function built into Model 9333 LAN Communicator.)

Evaluation output GO/NG evaluation output from terminal block: Open collector output (with 5 V voltage output, ac-

tive low, low output level of 0 to 0.5 V, current value of 15 mA)

Pulse width: 1.8 ms or more

Waveform evaluation time Evaluation time: 100 ms or less; evaluation period: 250 ms or less*

*1 channel, time axis of 5 µs/div, recording length of 25 div, magnification factor of 1, 2 input wave-

form periods

When sampling is slow, waveforms can be evaluated during measurement.

Graphic editor Instrument: Includes an editor for creating waveform evaluation reference areas.

External: Waveform evaluation reference areas (BMP data) created with third-party software on a

computer can be loaded into the instrument.

Editor commands Waveform capture, magnify/compress, paint, draw, erase, all clear, clear, reverse, undo, end

Waveform generation mode Depends on generator modules of Models MR8790, MR8791, and U8793

Waveform output control Output control

RUN (generation), STOP (stop), PAUSE (suspension)

Output control method

Manual: Controls output by using the F key on the settings screen.

Measurement and synchronization:

Outputs in synchronization with measurement start

Keys: START key, STOP key for output control (disable measurement)

Output waveform Model MR8790 Waveform Generator Unit:

DC, Sine waves

Model MR8791 Pulse Generator Unit:

Pulse, pattern

Model U8793 Arbitrary Waveform Generator Unit:

DC, sine waves, triangular waves, rectangular waves,

pulse, ramp up, ramp down, arbitrary waveform, program

Waveform compatible for

output (Only U8793)

Refer to "Arbitrary waveform generation function specifications" ( p.367)

17.5 Built-In Functions

351

Chapter 17 Specifications

Others

*1:When an LCD monitor is connected or when displaying the Waveform screen via a computer using

the HTTP function

*2: Model MR741 only

On-line help function*

Clicking [HELP] displays help for the item at the currently selected (blinking) item (the whole

screen is not used)

Basic help (when making settings, displays a brief description of the selected (blinking) item along

the bottom of the screen)

Grid types*

Display only: Off, normal or normal (dark)

Comment display*

Comments are displayed with channel numbers on the screen (channel markers)

Time scale display*

Time, time (base-60), scale, date, sample numbers

Variable auto-compensation*

OFF, ON

Start backup function OFF, ON

Display color*

Color 1 to 3, or user-defined

Beep sound Off, warnings, or warnings and operations

Language*

Japanese/ English/ Korean/ Chinese

Start action Click once, or twice

Stop action Click once, or twice

GUI section saving Off / On

External control erminals*

Trigger control terminals (EXT.TRIG, TRIG OUT),

External sampling input terminal (EXT.SMPL)

Remote control input terminal (START/IN1, STOP/IN2, SAVE/IN3),

Evaluation output terminals (GO/OUT1, NG/OUT2)

Remote control*

Select from among terminals for remote input (START/IN1, STOP/IN2, SAVE/IN3):

[START] [STOP] [START/STOP] [ABORT] [PRINT] [SAVE] [Pen Up/Down] [RUN/STOP] [PAUSE]

Internal status output*

Select from among evaluation output terminals (GO/OUT1, NG/OUT2): [Error], [BUSY], [Trigger]

Probe calibrationoutput*

Select evaluation output terminal (NG/OUT2): [Probe Calibration]

Evaluation output*

Select from among evaluation output terminals (GO/OUT1, NG/OUT2):

[Measure], [Waveform Evaluation], [Value Evaluation or Waveform Evaluation],

[Value Evaluation and Waveform Evaluation]

Time setting Included (settable with mouse or communication command)

Initialization Clear waveform data

System reset (Settings/System settings 1 [Environment]/System settings 2 [Interface])

Self-Test function ROM/RAM, Display, System information, USB host