MR8740、MR8741_user_manual_eng_20191016H.pdf - 第360页

17.4 File Specifications 348 Dat a Saving Dat a Loading Others 17.4 File Sp ecifications Supported storage m edia USB memory stick, Internal RAM, LAN (Model 9333 LAN C ommunicator) Saved data MR8740: Setting data, measur…

17.3 Trigger Section

347

Chapter 17 Specifications

Peak hold Included

Averaging Time axis, simple average of frequency axis, indexed average, peak hold (frequency axis),

number of times (2, 4, 8, ... 10,000)

Automatic print Automatically prints data after measurement (Sends print data to PC connected via LAN,

Model 9333 LAN communicator is required.)

Manual print The "Send Print Key" function of Model 9333 LAN communicator is utilized

Report print The "Send Print Key" function of Model 9333 LAN communicator is utilized

17.3 Trigger Section

Trigger method Digital comparison

Trigger modes • Single, Repeat, Automatic (Memory function, FFT function)

• Single, Repeat (Recorder function)

Trigger source MR8740: Block I Analog Unit (Ch1 to Ch32), 8 Standard Logic Channels

Block II Analog Unit (Ch1 to Ch22), 8 Standard Logic Channels

MR8741: Analog Unit (Ch1 to Ch16), 16 Standard Logic Channels

Independent trigger criteria settable for each channel

Free-run operation occurs when all trigger types are off.

Manual trigger Trigger operated by the manual trigger key of the Memory HiCorder

Timer trigger Trigger depending on the time and interval settings

External trigger (MR8741 only) External signal is used as trigger.

Trigger criteria AND or OR of each trigger source

Trigger types (analog) • Level Trigger

Set digitally as a voltage value below full-scale

• Voltage Sag Trigger (Drop)

Triggering occurs when peak voltage falls below the specified level (for commercial power).

(for 50/60 Hz commercial power)

• Window Trigger

Upper and lower trigger threshold levels are specified

Triggering occurs when the signal enters or exits the defined threshold range.

• Period Trigger

A trigger period reference voltage level and period range are specified

The period of the signal rising (or falling) through the specified level is measured, and triggering

occurs when the period is outside of the specified range.

• Glitch Trigger

Set voltage level and pulse width (glitch width)

Triggering occurs when the signal pulse width is narrower than the specified pulse width defined

as rising (or falling) through a specified voltage level.

• Event Trigger

Triggering occurs when the event values specified for the level or glitch trigger are exceeded.

Triggering occurs when the input rises above (or falls below) the specified trigger voltage level.

Trigger types (logic) Pattern (mask) trigger by 1, 0, or x (x: don't care)

External trigger

(MR8741 only)

External signal is used as trigger.

Trigger filter OFF, 0.1, 0.2, 0.5, 1.0, 1.5, 2.0, 2.5, 5.0, 10.0 div (Memory function, FFT function)

OFF, ON: 10 ms fixed (Recorder function)

Trigger level resolution 0.1% f.s. (f.s. = 20 div)

Pre-trigger Applicable to memory function or FFT function

% setting: 0, 2, 5, 10, 20, 30, 40, 50, 60, 70, 80, 90, 95, 100, -95%

div setting: Setting by units of 1 div

Trigger priority Off/On

Trigger synchronization

(MR8740)

Synchronization between block I and block II (by using external trigger)

Offset between blocks of the larger value of 1 µs or 3 samples or less

Trigger marker Trigger marks indicate positions of trigger events

Trigger timing Start (All functions), stop (Recorder function), Start & stop (Recorder function)

Trigger Output

(MR8741 only)

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 for level setting: (sampling rate × number of data points after trigger) or more

Pulse width for pulse setting: 2 ms±1 ms

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)