MR8740、MR8741_user_manual_eng_20191016H.pdf - 第361页

17.5 Built-In Functions 349 Chapter 17 S pecifications 16 17 Calculation-related functions W aveform calculation function Memory division function Cursor measure ment functions 17.5 Built-In Functions Calculation functio…

17.4 File Specifications

348

Data Saving

Data Loading

Others

17.4 File Specifications

Supported storage media USB memory stick, Internal RAM, LAN (Model 9333 LAN Communicator)

Saved data MR8740: Setting data, measurement data, screen image, print image

MR8741: Setting data, measurement data, screen image, print image,

waveform evaluation conditions, waveform evaluation areas

Saving types • Setting data (.SET) (Only setting configurations can be saved to internal RAM)

• Measurement data

Binary format (.MEM, .REC, .FFT), Text format (.TXT)

• Index , Memory division (.SEQ), division save (.IDX)

• Screen image (.BMP)

• Print image (.BMP)

• Waveform evaluation conditions (.ARE) *Evaluation area + Saving settings (MR8741 only)

• Waveform evaluation area (.BMP) *Saving of evaluation area (MR8741 only)

Arbitrary waveform data (.WFG) (when Model U8793 is installed)

• Generation program data (.FGP) (when Model U8793 is installed)

• Pulse pattern data (.PLS) (when Model MR8791 is installed)

File name entry Alphanumerics and Japanese

Saving range Whole range, or between A/B cursors

Data thinning save When saved in text format

OFF, 1/2, 1/5, 1/10, 1/20, 1/50, 1/100, 1/200, 1/500, 1/1000

Division save When saved in binary format

16 MB, 32 MB, 64 MB

Duplicate file name handling Auto: If a file with the same name exists, saves the file, adding a 4-digit number at the begin-

ning of the file name.

Serial: Saves the file, adding a 4-digit number at the beginning of the file name.

Overwrite: If a file with the same name exists, overwrites the file.

Error: If a file with the same name exists, an error message will be displayed.

Selection of blocks to be

saved

Saves the selected blocks when dividing the memory

Selection of channels to be

saved

Selects the channels to save (measurement data, calculation data), all channels

Supported storage media USB memory stick, Internal RAM

Loadable data types MR8740: Setting data, measurement data, analysis data

MR8741: Setting data, measurement data, analysis data,

waveform evaluation conditions, waveform evaluation area

Loadable data formats • Setting data (.SET) (Setting configurations can only be saved to internal RAM)

• Measurement data

Binary format (.MEM, .REC, .FFT)

• Index memory division (.SEQ), division save (.IDX)

• Waveform evaluation conditions (.ARE)

Evaluation area + Loading a setting configurations (MR8741 only)

• Evaluation area (.BMP)

Loading a evaluation area (MR8741 only)

• Arbitrary waveform data (when Model U8793 is installed)

• Generation program data (.FGP) (when Model U8793 is installed)

• Pulse pattern data (.PLS) (when Model MR8791 is installed)

Loading method New

Display file information Included

Delete data Single or multiple file selections

Sort files By name, date, size, extension

Ascending order, descending order

Rename file Included

Directory Create, rename and delete

Copy file Copy to other media

One-Touch saving The saving format and data specified in advance can be saved with a single action

(One-Touch saving via SAVE key or a mouse click).

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)