Hioki MR8740T User manual

MR8740-50
MR8740T
Instruction Manual
MEMORY HiCORDER
EN
June 2019 Revised edition 1
MR8740C964-01 19-06H

i
Conguring Model 8968 High Resolution
Unit settings..............................................46
Conguring Model 8967 Temp Unit
settings .....................................................47
Conguring Model U8969 Strain Unit
settings .....................................................49
Conguring Model 8970 Freq Unit
settings .....................................................51
Conguring Model 8971 Current Unit
settings .....................................................54
Conguring Model 8972 DC/RMS Unit
settings .....................................................56
Conguring Model MR8990 Digital
Voltmeter Unit settings ..............................57
Conguring Model U8974 High Voltage
Unit settings..............................................59
Conguring Model U8977 3CH Current
Unit Settings .............................................60
Congure Model U8979 Charge Unit
Settings ....................................................62
Conguring Model U8991 Digital
Voltmeter Unit settings ..............................65
3.7 Conguring Generator-Module-
Specic Settings ...................................66
Conguring Model MR8790 Waveform
Generator Unit setting ...............................67
Conguring Model MR8791 Pulse
Generator Unit settings .............................69
Conguring Model U8794 VIR
Generator Unit settings .............................74
4 Saving/Loading Data
and Managing Files 81
4.1 Data That Can Be Saved and
Loaded ...................................................82
4.2 Saving Data ...........................................83
Saving types and setting procedure ...........83
Automatically saving waveform data .........84
Real-time save..........................................88
Freely selecting data items to be saved
and save les (save icon) ..........................90
4.3 Loading Data .........................................94
Data loading procedure .............................94
Automatically loading the settings
(Auto-setup function) .................................95
4.4 Managing Files .....................................96
5 Conguring the Trigger
Settings 97
5.1 Trigger Setting Procedure ...................98
5.2 Enabling the Trigger Function .............99
5.3 Trigger timing ......................................100
Contents
Introduction ........................................................1
How to Refer to This Document .....................2
1 Measurement Method 3
1.1 Measurement Procedure .......................3
1.2 Setting Measurement Conditions .........5
Sampling rate setting guideline ....................7
1.3 Conguring the Input Channel
settings .....................................................9
Analog channels .......................................11
Logic channels..........................................15
1.4 Conguring the Sheet Settings ...........16
Switching sheets on the waveform
screen ......................................................17
1.5 Starting/Stopping Measurement .........18
2 Operating the
Waveform Screen and
Analyzing Data 19
2.1 Reading Measured Values
(Trace Cursors, Horizontal cursor) .....20
2.2 Displaying Vertical Scales
(Gauge Function)..................................25
2.3 Scrolling Through Waveforms ............27
Scrolling through waveforms .....................27
Checking a position of waveforms with
the scroll bar .............................................28
2.4 Changing the Display Position
and Display Magnication of
Waveforms ............................................29
Differentiating the waveform display
position and display magnication of
each analog channel .................................30
2.5 Enlarging a Part of the Waveform
(Zoom Function) ...................................33
3 Advanced Functions 35
3.1 Overlaying New Waveforms With
Previously Acquired Waveforms .........36
3.2 Converting Input Values
(Scaling Function) ................................38
When using Model U8969 Strain Unit ........42
3.3 Fine-Adjusting Input Values
(Vernier Function) .................................43
3.4 Inverting a Waveform
(Invert Function)....................................44
3.5 Copying Settings (Copy Function) .....45
3.6 Conguring Measuring-Module-
Specic Settings ...................................46
MR8740C964-01
5
4
3
2
1

Contents
ii
8.2 Conguring Waveform Calculation
Settings ................................................162
8.3 Operators of Waveform
Calculation and Calculation
Results .................................................169
9 Memory Dividing
Function 173
9.1 Conguring the memory division
settings .................................................174
9.2 Displaying Waveforms .......................175
10 Conguring the System
Environment Settings 177
11 Connecting the
Instrument to
Computers 181
11.1 Conguring the LAN Settings and
Connecting the Instrument to the
Network ................................................182
Conguring the LAN settings with the
instrument ..............................................182
11.2 Managing Data in the Instrument
With the FTP Server Function ..........186
Conguring the FTP sever setting with
the instrument .........................................186
Conguring the FTP client setting with
the instrument .........................................191
11.3 Sending Data to a Computer With
the FTP Client Function .....................192
Conguring an FTP server setting on a
computer ................................................193
Conguring the FTP client setting with
the instrument .........................................197
11.4 Sending Email messages ..................198
Conguring the basic setting for sending
email messages ......................................199
Conguring the email contents
settings ...................................................200
Conguring the authentication,
compression, and encryption settings
for email messages to be sent .................201
11.5 Controlling the Instrument with
Command Communications
(LAN) ....................................................203
11.6 Operating the Instrument With a
Browser Installed in a Computer ......205
5.4 Conguring the Pre-trigger
settings .................................................102
5.5 Setting the Trigger Satisfaction
Conditions (AND/OR Operation)
Among Trigger Sources .....................105
5.6 Triggering the Instrument Using
Analog Signals (Analog Trigger) ......106
5.7 Triggering the Instrument With
Logic Signals (Logic Trigger) ............114
5.8 Triggering the Instrument at
Regular Intervals
(Interval Trigger) .................................116
5.9 Externally Triggering the
Instrument (External Trigger) ............118
5.10 Manually Triggering the Instrument
(Forcible Trigger) ................................118
5.11 Issuing an Alert Using Triggers
(Alert Function) ...................................119
5.12 Automatically Specifying the
Trigger Level (Auto-trigger Level) ....121
6 Search Function 123
6.1 Searching For Peak Values ..............124
6.2 Searching For Positions Where a
Trigger Condition Is Satised ............126
6.3 Searching For Differences from
a Fundamental Wave
(Memory HiConcierge).......................130
6.4 Jump to the Specied Position .........132
7 Numerical Calculation
Function 133
7.1 Numerical Calculation Procedure ....134
7.2 Conguring the Numerical
Calculation Settings ...........................136
Displaying numerical calculation
results ....................................................147
7.3 Evaluating Calculation Results on
a Pass/Fail Basis ................................148
Displaying evaluation results and
externally outputting signals ....................150
7.4 Numerical Calculation Types and
Descriptions .........................................151
8 Waveform Calculation
Function 159
8.1 Waveform Calculation Procedure ....160

Contents
iii
12 Externally Controlling
the Instrument 209
12.1 External Input and Output .................210
External input (IN1), (IN2) .......................210
External output (OUT1), (OUT2) ..............211
Trigger output (TRIG.OUT) ......................213
External trigger terminal (EXT.TRIG) .......215
12.2 External Sampling (EXT.SMPL) .......217
13 Appendix 219
13.1 Information for Reference
Purposes ..............................................219
Waveform le size
(values for reference purposes) ...............219
Maximum recordable time when the
real-time save is enabled
(values for reference purposes) ...............221
Scaling method for strain gauges ............223
Example of a waveform text le ...............225
Index 227
9
8
7
6
5
Index
13
12
11
10

Contents
iv

1
Introduction
Thank you for choosing the Hioki MR8740T Memory HiCorder (Model MR8740-50). Preserve this
manual carefully and keep it handy to make full use of this instrument for a long time.
Following manuals are provided along with these models. Refer to manuals relevant to your
purpose.
Type Contents Printed PDF
Operating Precautions Information on the instrument for safe operation –
Quick Start Manual Basic instructions and specications of the
instrument –
Instruction Manual (this
document) Functions and instructions for the instrument –
Notations
*Additional information is presented below.
Indicates the initial setting values of the items. Initializing the instrument restores
settings to each of these values.
(p. ) Indicates the location of reference information.
START
(Bold-faced) Names and keys on the screen are shown in boldface.
[ ] Menus, dialog boxes, buttons in a dialog box, and other names on the screen are
indicated in brackets ([ ]).
Windows Unless otherwise specied, “Windows” represents Windows 7, Windows 8, and
Windows 10.
Current sensor Sensors measuring current are referred to as “current sensor.”
S/s
The number of times per second the analog input signals are digitized by the
instrument is represented in “samples per second (S/s).”
Example: “20 MS/s” (20 megasamples per second) indicates that the signal is digitized
20 × 106 times per second.
Accuracy
We dene measurement tolerances in terms of f.s. (full scale) and rdg. (reading) values, with the
following meanings:
f.s. (maximum display value or scale length)
The maximum displayable value or scale length.
rdg. (displayed value)
The value currently being measured and displayed on the measuring instrument.
setting (setting value)
Indicates the value set as the output voltage, current, or other quantity.
Introduction

2
How to Refer to This Document
How to Refer to This Document
How to open a screen
Indicates the order of clicking the
screens.
The button represents the
setting key.
Procedure numbers
Numbered same as a
corresponding step-by-step
instruction.
Options and explanations
Describes options available
when an item is clicked.
The icon  indicates the default
setting of the item.

3
1Measurement Method
1.1 Measurement Procedure
Inspecting the instrument before measurement
Conguring the basic settings for measurement
Choose a sampling rate. (p. 5)
Choose a recording length (shot). (p. 6)
Advanced settings: “3.1 Overlaying New Waveforms With Previously Acquired
Waveforms” (p. 36)
Conguring the input channel settings (p. 9)
Congure the analog channel settings. (p. 11)
Congure the logic channel settings. (p. 15)
Advanced settings: “3.2 Converting Input Values (Scaling Function)” (p. 38)
“3.3 Fine-Adjusting Input Values (Vernier Function)” (p. 43)
“3.4 Inverting a Waveform (Invert Function)” (p. 44)
Conguring the sheet settings
Choose a display format of waveforms. (p. 16)
Conguring the trigger settings (p. 97)
Starting measurement (p. 18)
Finishing the measurement
Advanced operation: “Scrolling through waveforms” (p. 27)
“2.4 Changing the Display Position and Display
Magnication of Waveforms” (p. 29)
“4 Saving/Loading Data and Managing Files” (p. 81)
“7 Numerical Calculation Function” (p. 133)
1 Measurement Method
1
Measurement Method

4
Measurement Procedure
To conguring measurement settings automatically
Clicking [Auto range] on the waveform screen automatically species the sampling rate,
measurement range, and zero position of the input waveform and start a measurement.
Refer to “3.7 Measuring Signals With the Auto-range Setting” of Quick Start Manual.
To load settings previously registered
Load the settings le on the le screen.
Refer to “4.3 Loading Data” (p. 94).
To automatically load saved settings at the time of startup
Congure the setting for the instrument so as to load the le containing the instrument settings at
the time of startup.
Refer to “Automatically loading the settings (Auto-setup function)” (p. 95).
Initializing the instrument (Restoring the basic settings)
Select > [System] > [Initialize] to restore the instrument settings to the factory default.
The setting after the initialization is suitable for simple measurement.
If any unexpected or complicated behavior is observed, initialize the instrument.
Refer to “6.2 Initializing the Instrument” in Quick Start Manual.

5
Setting Measurement Conditions
1.2 Setting Measurement Conditions
You have to set conditions required for measurement, such as the sampling rate ([Sampling]) and
recording length ([Shot]).
> [Status] > [Condition]
7
1
2
3
4
5
9
6
8
1
Enter a comment in the [Title comment] box.
Number of characters that can be entered: up to 40
2
Click the [Sampling] box, and then choose a sampling rate from the list.
Refer to “Sampling rate setting guideline” (p. 7).
20 MS/s, 10 MS/s, 5 MS/s, 2 MS/s, 1 MS/s,
500 kS/s, 200 kS/s, 100 kS/s, 50 kS/s, 20 kS/s, 10 kS/s, 5 kS/s, 2 kS/s, 1 kS/s,
500 S/s, 200 S/s, 100 S/s, 50 S/s, 20 S/s, 10 S/s, 5 S/s, 2 S/s, 1 S/s
When the real-time save is set to [On], due to the combination of the number of channels to be saved and
save destinations, the maximum sampling rate that can be set varies as follows:
Maximum sampling rate that can be
chosen Destination to save
Number of channels to be saved Built-in SSD USB ash drive*
12 channels or less 5 MS/s 1 MS/s
33 to 64 channels (SSD)
25 to 64 channels (USB ash drive) 2 MS/s 500 kS/s
13 to 32 channels (SSD)
13 to 24 channels (USB ash drive) 1 MS/s 200 kS/s
65 channels or more 500 kS/s 100 kS/s
(When Model U8991 is installed, double the number of its channels and nd the maximum sampling rate.)
*: Only if Model Z4006 USB Drive, a Hioki-designated option, is used, the real-time save operation with the
instrument is guaranteed
1
Measurement Method

6
Setting Measurement Conditions
3
Click the [External sampling] button to set it to [On] or [Off].
OffDisables the external sampling function.
On Choose this option to sample data at a sampling rate dened by a signal inputted into
the external control terminal (EXT.SMPL).
Samples data at rising edges of the input signal.
Samples data at falling edges of the input signal.
4
In the [Shot] area, click the [Points] box, and then choose an option for the number of points
to be measured from the list.
2.5 k, 5 k, 10 k, 20 k, 50 k, 100 k, 200 k, 500 k, 1 M, 2 M, 5 M, 10 M, 20 M, 50 M,100 M
Enabling [Any] and clicking [Points] allows you to enter the number of points in 100 increments.
When the real-time save is set to [On], you cannot specify the recording length in the [Points] box.
Choose [Save], and enter the recording length in the [Recording time] box. (p. 89)
The maximum recording length you can specify varies depending on the number of modules to be used, the
number of divided memories, and module types to be used.
5
Click the [Mode] box, and then choose a recording mode from the list.
Single Measures waveforms only once. Clicking the start icon starts recording waveforms,
and then stops when recording-length waveforms have been acquired.
RepeatMeasures waveforms repeatedly. Clicking the stop icon stops the measurement.
When you choose [Repeat] and set [Count] to [On], measurements repeat the number of times entered in
the [Count] box.
When [Realtime save] is set to [On], you can choose [Single] mode only.
6
Click the [Unit in use] box, and then choose the number of modules to be used for
measurement from the list.
27Measures waveforms through all modules.
16 Measures waveforms through module 1 through module 16.
8Measures waveforms through module 1 through module 8.
4Measures waveforms through module1 through module 4.
You cannot perform measurement across invalid units. Generator modules, however, can be used.
Logic modules can be used only if the number of modules is set to [27].
16 modules
Enables module 1 through module 16 installed in the
slots shown in the right.
8 modules
Enables module 1 through module 8 installed in the slots
shown in the right.
4 modules
Enables module 1 through module 4 installed in the slots
shown in the right.

7
Setting Measurement Conditions
7
Click the [Realtime save] button to set it to [On].
The instrument can record data in the built-in SSD and a storage device while measuring waveforms.
Refer to “Real-time save” (p. 88).
8
Congure the overlaying setting.
Refer to “3.1 Overlaying New Waveforms With Previously Acquired Waveforms” (p. 36).
9
Conguring the memory division settings
Refer to “Memory Dividing Function” (p. 173).
Sampling rate setting guideline
Choose a sampling rate using the following table as a guideline.
Maximum display
frequency Sampling rate Maximum display frequency Sampling rate
800 kHz 20 MS/s 80 Hz 2 kS/s
400 kHz 10 MS/s 40 Hz 1 kS/s
200 kHz 5 MS/s 20 Hz 500 S/s
80 kHz 2 MS/s 8 Hz 200 S/s
40 kHz 1 MS/s 4 Hz 100 S/s
20 kHz 500 kS/s 2 Hz 50 S/s
8 kHz 200 kS/s 0.8 Hz 20 S/s
4 kHz 100 kS/s 0.4 Hz 10 S/s
2 kHz 50 kS/s 0.2 Hz 5 S/s
800 Hz 20 kS/s 0.08 Hz 2 S/s
400 Hz 10 kS/s 0.04 Hz 1 S/s
200 Hz 5 kS/s
If the instrument plots false waveforms (aliasing)
If a measured signal oscillates at a higher frequency compared to the sampling rate you choose,
the instrument may plot a false waveform oscillating at a frequency lower than that of the actual
signal once the signal frequency reaches a certain level. This phenomenon is called aliasing.
Actual input
signal
Sampling interval:
Sampled points
Observed
waveform
A sampling interval longer than the cycle of the
input signal causes aliasing.
To plot a sign wave that allows you to observe the peaks without any aliasing, the instrument needs
to sample the waveform at a minimum of 25 points per cycle.
1
Measurement Method

8
Setting Measurement Conditions
To set the sampling rate automatically
Refer to “3.7 Measuring Signals With the Auto-range Setting” of Quick Start Manual.
Update rate of each module
The data refresh rate is not allowed to exceed the maximum sampling rate of each module.
The instrument measures the same data until the data gets updated, causing the instrument to plot
a stair-step waveform.
In addition, even though the instrument measures the same signal simultaneously, values may vary
due to differences in the sampling rate, frequency range, and frequency characteristics of modules.
Modules
Maximum sampling rate of module
or
data refresh rate
Reference
page
Model 8966 Analog Unit 20 MS/s (50 ns) –
Model 8967 Temp Unit Depends on the data refresh setting. p. 47
Model 8968 High Resolution Unit 1 MS/s (1 µs) –
Model U8969 Strain Unit 200 kS/s (5 µs) –
Model 8970 Freq Unit Depends on the setting. p. 51
Model 8971 Current Unit 1 MS/s (1 µs) –
Model 8972 DC/RMS Unit Depends on the response setting. p. 56
Model 8973 Logic Unit 20 MS/s (50 ns) –
Model MR8990
Digital Voltmeter Unit Depends on the NPLC setting. p. 57
Model U8974 High Voltage Unit Depends on the response setting. p. 59
Model U8975 4ch Analog Unit 5 MS/s (200 ns) –
Model U8977 3CH Current Unit 5 MS/s (200 ns) –
Model U8978 4CH Analog Unit 5 MS/s (200 ns) –
Model U8979 Charge Unit 200 kS/s (5 µs) –
Model U8991 Digital Voltmeter Unit Depends on the NPLC setting. p. 65

9
Conguring the Input Channel settings
1.3 Conguring the Input Channel settings
Congure the settings of the analog and logic channels.
> [Channel]
Operation available on the [Channel] screen
•Adding a comment to each channel
•Setting measurement conditions for each channel
•Conguring the display method setting for waveforms
•Converting measured values into physical quantities and displaying them
1
Measurement Method

10
Conguring the Input Channel settings
Channel setting procedure
Analog channels (CH1 through CH108) setting procedure
Conguring the input settings
Choose a measurement mode. (p. 11)
Choose a measurement range for each measurement target. (p. 12)
Convert input values (scaling function). (p. 14)
Choose an input coupling method. (p. 13)
Choose a low-pass lter cutoff frequency (if noise is present). (p. 13)
Conguring the display settings
Select a waveform color. (p. 14)
Convert input values (scaling function). (p. 14)
Logic channels (Model 8973 Logic Unit) setting procedure
Conguring the display settings
Choose a logic recording width. (p. 15)
Specify the display position of the waveform. (p. 15)
Select a waveform color. (p. 15)

11
Conguring the Input Channel settings
Analog channels
For details on conguring each module setting, refer to “3.6 Conguring Measuring-Module-Specic
Settings” (p. 46).
> [Channel] > each module (UNIT)
2
1
4
5
7
3
6
1
Enter a comment in the [Comment] box.
Number of characters that can be entered: up to 40
2
Click the [Mode] box, and then choose a measurement mode from the list.
VoltageMeasures a waveform in voltage mode.
Temperature Measures a waveform in temperature mode.
Selectable modes vary depending on the installed modules.
Refer to “3.6 Conguring Measuring-Module-Specic Settings” (p. 46).
1
Measurement Method

12
Conguring the Input Channel settings
3
Click the [Range (f.s.)] box, and then choose a measurement range from the list.
Select a measurement range for each channel. The value of the range represents its maximum displayable
value (f.s.).
See the following table for the full-scale resolution of each module.
If the input voltage exceeds the measurable range (overrange occurs), change the measurement range to one
with a lower sensitivity.
For Model MR8990 and Model U8991, starting a measurement using a high-sensitivity range with the input
terminal open causes an input signal to be overrange.
After changing the measurement range, check values of the level, upper limit, lower limit, and other values of
the trigger, search, and numerical calculation functions.
Module Resolution (LSB)
Model 8966 Analog Unit
Model 8971 Current Unit
Model 8972 DC/RMS Unit
2,000
Model 8967 Temp Unit* 20,000
Model 8968 High Resolution Unit
Model U8974 High Voltage Unit
Model U8975 4ch Analog Unit
Model U8977 3CH Current Unit
Model U8978 4CH Analog Unit
32,000
Model U8969 Strain Unit
Model U8979 Charge Unit 25,000
Model 8970 Freq Unit (Power frequency mode) 2,000
Model 8970 Freq Unit (Count mode) 40,000
Model 8970 Freq Unit
(Frequency mode, rotation speed mode, duty ratio mode, pulse width mode) 10,000
Model MR8990 Digital Voltmeter Unit
Model U8991 Digital Voltmeter Unit 1,000,000
*: For the Model 8967 Temp Unit, the valid range varies depending on the thermocouples. For more
information about resolution, refer to “Model 8967 Temp Unit” in “5.2 Specications of the Options” in Quick
Start Manual.

13
Conguring the Input Channel settings
4
Congure the input coupling, low-pass lter, and probe ratio settings.
Click the area that includes [Coupling] allows the setting dialog box to appear.
(1)
(2)
(3)
(1) Click the [Coupling] box, and then choose a coupling method for an input signal from the
list.
Choose a coupling method for an input signal. In general, use the DC coupling.
DCMeasures both DC and AC components of an input signal.
AC Measures an AC component only of an input signal. A DC component can be
eliminated.
GND Connects the input terminal to the ground, which allows you to check the zero position.
(2) (1) Click the [L.P.F] box, and then choose a cutoff frequency of the low-pass lter from the
list.
Enabling the low-pass lter installed in the module can eliminate unwanted high-frequency components.
The lters available vary depending on the module types. Use an adequate lter in accordance with the
characteristics of an input signal.
Example: Model 8966 Analog Unit
OFF, 5 Hz, 50 Hz, 500 Hz, 5 kHz, 50 kHz, 500 kHz
(3) Click the [Probe ratio] box, and then choose a probe ratio from the list.
Choose any of the ratios when the measurement involves use of a connection cord or probe.
1:1Choose this ratio when using Model L9197, Model L9198, Model L9790, or Model
L9217 Connection Cord.
1:10 Choose this ratio when using Model 9665 10:1 Probe.
1:100 Choose this ratio when using Model 9666 100:1 Probe, Model P9000-01 Differential
Probe, or Model P9000-02 Differential Probe.
1:1000 Choose this ratio when using Model 9322, Model P9000-01, or Model P9000-02
Differential Probe.
1
Measurement Method

14
Conguring the Input Channel settings
5
Click the [Display] button to set it to [On] or [Off].
OnDisplays the waveform on the waveform screen.
Color Allows you to choose a waveform display color. You can also choose the
same color as lines acquired across other channels.
Invert
(Off, On)
When the signs of displayed waveforms are reversed, the waveforms can be
inverted.
Refer to “3.4 Inverting a Waveform (Invert Function)” (p. 44).
Vernier Allows you to freely ne-adjust the input voltage on the waveform screen
(display adjustment only). When recording physical values such as noise,
temperature, and acceleration with sensors, you can adjust those amplitudes,
facilitating calibration.
Refer to “3.3 Fine-Adjusting Input Values (Vernier Function)” (p. 43).
Off Does not display any waveform.
6
Congure the scaling settings.
Refer to “3.2 Converting Input Values (Scaling Function)” (p. 38).
7
Switch the channels.
Click the corresponding location to switch the channels, and then set the measurement conditions by following
the procedure above.