MR8847A
HIOKI MR8847G963-03
MR8847-51
MR8847-52
MR8847-53
Measurement Guide
MEMORY HiCORDER
Apr. 2021 Revised edition 3
MR8847G963-03 21-04H
Read rst.
Offers an introduction to the Memory
HiCorder's basic measuring method
for rst time users.
EN
HIOKI MR8847G963-03
Introduction
HIOKI MR8847G963-03
Thank you for purchasing the Hioki MR8847A Memory HiCorder (MR8847-51, MR8847-52,
MR8847-53).
This Measurement Guide consists of several basic application examples. Before using the
instrument, be sure to read the Instruction Manual carefully.
The following documents are provided with this instrument. Refer to them as appropriate for your
application.
Instruction manuals Description
Introduction
1
2
Contents
Screen structure and operation
overview
Preparations for Measurement The things to be done before carrying out measurement (p. 5)
Measurement Procedure The procedure from pre-measurement check to analysis,
1 Measurement Guide
(This document)
2 Instruction Manual
(book)
3 Communication
Command Instruction
Manual (PDF le)
4 U8793, MR8790, MR8791
Instruction Manual
(PDF le)
Read rst.
Oers an introduction to the instrument’s basic measuring method
for rst time users.
Contains explanations and instructions regarding the instrument’s
operating methods and functions.
Contains lists of the communication commands to control the
instrument with a computer and explanations regarding the
commands.
Contains explanations and instructions regarding the operating
method as well as functions of the following models: U8793
Waveform Generator Unit, MR8790 Waveform Generator Unit,
MR8791 Pulse Generator Unit, and SF8000 Waveform Maker
The screen structure and overview of the operation keys of
the instrument
saving, and printing.
Arbitrary
(p. 2)
(p. 7)
3
4
5
6
7
Measure the commercial power
supply
Monitor abnormal occurrences How to record a voltage drop including power failure as an
Analyze the data How to observe waveform measured values and calculate
Print the data The printing method. (p. 21)
Convenient functions The auto-range function, pre-trigger, probe compensation (p. 24)
Others The screen, time axis and sampling, record length setting,
MR8847G963-03
How to record waveforms of a 200-V commercial power
supply
How to save the data.
example of special occurrences
How to record only abnormal occurrences, constantly
monitoring waveforms using the trigger function
How to save the data automatically
them using the A and B cursors
How to prevent the measured waveforms displayed on the
screen from being overlapped
voltage axis and resolution, le transfer speed
(p. 9)
(p. 12)
(p. 14)
(p. 27)
8
9
10
Appx. Ind.
1
Screen structure and operation overview
HIOKI MR8847G963-03
Screen structure and operation overview
Screen structure
For screens with sheet tabs displayed, the sheets can be switched every time a key is pressed.
Waveform screen File screen
The screen to observe waveforms The screen to view data les in a storage media
(CF card, built-in drive, USB ash memory,
internal memory).
Settings window Status screen
Displayable on the waveform screen.
Channel settings
window
The window to set
details for analog or
logic channels
Trigger settings
window
The window to set
details for triggers
The screen to set measuring methods and
waveform calculations
System screen Channel screen
Sheet tabs
Displays selectable sheet
names.
2
The screen to set environment, le saving,
printing, and communication, as well as initialize
data
The screen to set the each channel, scaling, and
comment
Operating Keys
HIOKI MR8847G963-03
Screen structure and operation overview
87
1
9
10
2
3
11
12
13
4
14
5
6
15
16
DISP key
1
Displays the waveform
screen.
CH.SET key
2
Displays the channel
settings window in the
waveform screen.
TRIG.SET key
3
Displays the trigger settings
window in the waveform
screen.
F key
4
Select items to be set.
ESC key
5
Cancels the running
operation.
Closes the displayed dialog
and the window.
KEY LOCK:
Press and hold ESC key
for 3 s to disable key
operations.
Press and hold it for 3 s
enable key operations.
STATUS key
8
Displays the status screen.
CHAN key
9
Displays the channel
screen.
FILE key
10
Displays the le screen.
AB CSR key
11
(Lit in red while selected)
Displays the A/B cursor
settings window.
WAVE key
12
(Lit in red while selected)
Assigns the waveform
scrolling to the jog and
shuttle knobs.
Inner: Jog
13
Outer: Shuttle
Scrolls through waveforms.
1
2
3
4
5
STOP key
6
Stops the running
measurement.
1 press:
Measurement stops after
the set recording length.
2 presses:
It stops immediately.
SYSTEM key
7
Displays the system
screen.
CURSOR keys
14
Moves the cursor displayed
on the screen.
Manual trigger key
15
Issues a manual trigger
event.
START key
16
Starts a measurement.
(Lit in green during
measurement operations)
6
7
8
9
10
Appx. Ind.
3
Screen structure and operation overview
HIOKI MR8847G963-03
17 18 19 20 21 22 23
PRINT key
17
Prints waveforms and others.
COPY key
18
Prints a screen shot.
FEED key
19
Feeds the recording paper.
SAVE key (Lit in blue while accessing a recording medium)
20
Saves data (a dialog can be switched between visible and invisible during an auto-saving).
To change the setting content
Setting cursor
The current cursor position is
indicated by ashing.
Move the setting cursor to an item to be set.
1
HELP key
21
Opens the help information.
AUTO key
22
Starts auto-range measurement.
TIME/DIV key
23
Congures the time axis setting.
2
Select an option
4
Preparations for Measurement
HIOKI MR8847G963-03
Preparations for Measurement
Before using the instrument, refer to “Operating Precautions” in the Instruction Manual.
Install the instrument
1
To prevent overheating, be sure to leave the specied clearances around the instrument.
Left side
Vent holes
Set the items necessary to the instrument
Connect the probes and
1
cords.
Insert the USB ash
2
memory or CF card.
Right side
1
2
All around
the instrument,
at least 5 cm
Left side
2
3
4
5
6
3
Set the recording paper.
3
Connect the power cord.
4
7
4
Front
2
8
9
Refer to the Instruction
Manual for details.
10
Appx. Ind.
5
Preparations for Measurement
HIOKI MR8847G963-03
Turn on the instrument
Set the clock
Right side
Power On( )
Set the clock on the [Init] sheet. The date and time indication is shown at
the upper right of the screen.
Execute the zero-adjustment
This procedure compensates for input module dierences and sets the reference potential of the
instrument to 0 V.
To ensure precise measurements, perform zero-adjustment after 30-minute warm-up.
2
1
Congure the setting on the [Unit List] sheet.
Move the cursor to this position.
1
Tip
6
Select [Exec Zero-Adjust].
2
[Exec Zero-Adjust] can also be selected on the channel settings window ([Analog] sheet).
(On the waveform screen, press the DISP key, and then, on the channel settings window, press the
CH.SET key)
Measurement Procedure
HIOKI MR8847G963-03
Measurement Procedure
Before perform measurement, please read “Operating Precautions” in the Instruction Manual.
Inspect the instrument before measurement
Please read “Pre-Measurement Inspection” in the Instruction Manual.
Connect the leads or clamp sensor to the measurement point
Set the measurement conditions
Congure the setting on the
waveform screen.
• Measurement function
• Timebase (horizontal axis)
• Recording length
1
2
3
4
5
6
7
On the Channel settings window of
the [Analog] sheet, congure the
settings.
• Voltage (vertical) axis range
Congure other settings if necessary.
Start and stop the measurement
Start the measurement
8
9
10
Appx. Ind.
Stop the measurement
7
Measurement Procedure
HIOKI MR8847G963-03
Analyze, save, and print the data
Analysis
Scroll through the waveforms to observe them.
Save
Save the data.
The data can be also automatically saved under
the pre-congured saving conditions.
Print
The displayed waveforms can be changed.
(It can be stretched or compressed.)
Observe the saved data.
The data can be loaded, and les can be deleted
and copied.
8
<Example of print>
Print the recorded waveforms.
Measure the commercial power supply
HIOKI MR8847G963-03
Measure the commercial power supply
The following explains the method of recording a voltage waveform for
the commercial power supply of 200 V AC (50 Hz /60 Hz), including the
method of saving the data after measurement. For one instance, the level
trigger is used to measure waveforms.
To measure repetitive waveforms such as the commercial power supply,
setting the standard level trigger level as the measurement start point will
make it easier to observe the waveforms.
Trigger
level
0 V
1 Prepare for measurement
Required items:
MR8847A Memory HiCorder
8966 Analog Unit
L9198 Connection Cord
CF card
Refer to “Preparations for
Measurement” (p. 5)
Insert the CF card.
Connect the lead to CH1.
Connect the lead to the
measuring point.
Connect the power cord
to the power outlet.
2 Set the measurement conditions and trigger conditions
T
1
2
3
4
5
Congure the settings on the waveform screen described as follows.
Displays the
1
2
3
Selects the items to be set.
waveform screen.
Displays the channel
settings window.
([Analog] sheet)
Displays the trigger
settings window.
([Analog Trig] sheet)
Moves the
cursor.
Set the measurement conditions.
1
2
Voltage axis range
Set the voltage per one division on
the vertical axis.
Set the trigger conditions.
3
Trigger type
Set to [Level].
Timebase
Set the time per 1 division on
the horizontal axis.
Level
Set to [0 V].
Slope
Set to [↑].
6
7
8
9
10
Appx. Ind.
9
Measure the commercial power supply
HIOKI MR8847G963-03
Deciding on the horizontal axis (time axis) range
The horizontal axis (time axis) range is calculated from the frequency and cycle.
f [Hz] = 1/t [s] (f: frequency; t: cycle)
Example: When the measurement frequency is 50 Hz.
1 cycle is t = 1/50 [s], i.e. 20 ms.
When the horizontal axis (time axis) is set to 20 ms/div, exactly 1 cycle will be displayed in 1 division (1
square).
Vertical axis (Voltage axis) range
If you change the range during a measurement, the measurement will restart.
3 Set the saving conditions
Congure the settings on the system screen described as follows.
Set the saving conditions
Displays the [File
Save] sheet on the
system screen.
Select the items to be set.
To observe waveforms on the instrument, set the [Save Type] to [Wave Binary]. To observe
Tip
them on a computer, set it to [Text]. Data saved in the text format cannot be observed on the
instrument.
Move the
cursor.
Select at save (Selection Save)
[No] Pressing the SAVE key allows saving measured data
under the congured saving conditions immediately.
[Yes] Pressing the SAVE key each time allows saving
measured data after the operator checks and
congures the saving conditions.
For example, the saving conditions listed below will be displayed on
the screen as shown above.
Save Type: Wave Binary Save to: CF Card
Save Name: Voltage Save Area: Whole Wave
10
4 From Starting Measurement to Stop It
HIOKI MR8847G963-03
Measure the commercial power supply
Trigger
level
[Trigger Wait]
Press
5 Save the data
Tip
Refer to”Analyze data” (p. 14) for the analyzing method.
Press FILE key to observe the saved data on the le screen. Refer to “Access the storage
medium” (p. 19).
0 V
Trigger slop[↑]
When the trigger conditions are met, the trigger is issued and
the waveforms with a length equivalent to the preset record
length will be recorded. Measurement data will be recorded until
the STOP key is pressed.
Press SAVE key.
Data will be saved under the pre-set saving conditions.
T
1
2
3
4
5
6
7
8
9
10
Appx. Ind.
11
Monitor abnormal occurrences
HIOKI MR8847G963-03
Monitor abnormal occurrences
The following explains the recording method to record a voltage drop
including a voltage interruption.
Keep monitoring and save the measurement data automatically.
In this section, a voltage dip trigger is used to measure waveforms. The
following explains how to issue the trigger when an input signal from a
50-Hz commercial power falls from approximately 200 V rms (282.8 V
peak) to below 180 V rms (254.4 V peak).
Trigger level
1/2 cycle
1 Prepare for measurement
Required items:
MR8847A Memory HiCorder
8966 Analog Unit
L9198 Connection Cord
CF card
Refer to “Preparations for
Measurement” (p. 5)
Insert the CF card.
Connect the lead to CH1.
Connect the lead to the
measuring point.
Connect the power cord
to the power outlet.
2 Set the measurement conditions and trigger conditions
T
Congure the setting on the waveform screen as follows.
Displays the
1
2
3
Select the items to be set.
waveform screen.
Displays the Channel
settings window.
([Analog] sheet)
Displays the Trigger
settings window. ([Analog
Trig] sheet)
Move the
cursor.
3
Set the trigger conditions.
Trigger type
Set to [Drop].
Set the measurement conditions.
1
2
Voltage axis range
Set the voltage per one division
on the vertical axis.
Timebase
Set the time per 1 division on
the horizontal axis.
Trigger
Set to [Repeat].
12
Level
Set to [254.4 V].
Frequency
Set the frequency
Pre-trigger
Set the ratio in %.
Pre-trigger
HIOKI MR8847G963-03
Monitor abnormal occurrences
To record waveforms that exist before any abnormal occurrence, such as an
instantaneous power failure, set the pre-trigger, which sets where the trigger (trigger
point) is issued on the recording length of the waveform.
E.g. To record the waveform with a length of 10 divisions that exist before an
instantaneous power failure for the recording length setting of 25 divisions, set
the pre-trigger to 40%. (Calculation method: 10 [div] / 25 [div] × 100%)
Refer to “What is a pre-trigger?” (p. 25).
3 Set automatic saving
Congure the setting on the system screen as follows.
Displays the system
screen.
([File Save] sheet)
Move the
cursor.
For automatic saving, the built-in drive, a USB ash
memory, and a CF card are available.
When saving waveforms to the CF card, please check that there
is enough capacity and the card is properly inserted.
Select the items to be set.
T
40%
Recording length
25 divisions
Auto Save
Set to [On].
Save to
Specify the folder
the waveform to be
saved to.
1
60%
2
3
4
5
6
4 Start and Stop Measurement
Trigger level
127.2 V
[Trigger waiting]
Press
[Trigger waiting] will be displayed
until the commercial power voltage
satises the trigger conditions (in
this case, until an instantaneous
power failure occurs).
Refer to “Analyze data” (p. 14) for analysis method.
-127.2 V
1/2 cycle
When the trigger conditions are met, the trigger is issued and
measurement will start.
Measurement data will be recorded until the STOP key is
pressed.
Data will be saved automatically to the CF card and wait
the next instantaneous power failure after the measurement
completes.
7
T
8
9
10
Appx. Ind.
13
Analyze data
HIOKI MR8847G963-03
Analyze data
Observe the measured waveform
Scroll through the waveform
The position of the waveform currently displayed on the display is indicated on the scroll bar.
Blue frame
(Currently displayed range)
Trigger point Trigger time
Red bar
(Whole waveform)
Stretch or compress the waveform
Earlier Later
Change the magnication.
When the A and B cursors appear on the screen,
use the cursors as the standard to stretch or
compress.
14
Zoom in and observe the waveform
HIOKI MR8847G963-03
The waveform in the blue frame is zoomed up.
Scroll through it operating the jog shuttle.
1
Normal display
2
4
3
Move the cursor to the
1
magnication.
Press [ZOOM On].
2
The icon is changed to [ZOOM O], and
the screen is divided vertically into two.
Move the cursor to [Zoom Mag].
3
Change the magnication.
4
Analyze data
1
2
Zoomed display
Read measured value
1. Set the A and B cursors.
Congure the setting on the waveform screen as follows.
1
Display the
waveform screen.
2
Displays the AB
cursor settings
window.
Move the
cursor.
1
2
*The value to be displayed can be switched.
[Trace] Time value and measured value
[V Csr] Time value and frequency
AB Cursors*
Set to [Trace].
Kind
Set to [a-B].
Subject Ch
Set to [ALL].
3
4
5
6
7
Select the items to be set.
Example
Time
Measured value of CH 1
[H Csr] Measured value
Values at A cursor
Dierence between values at A and B cursors
Values at B cursor
8
9
10
Appx. Ind.
15
Analyze data
HIOKI MR8847G963-03
2. Move the A and B cursors to the point you wish to observe.
Move the cursor to the point
of the measured value on
the waveform you wish to
B cursor
A cursor
observe operating the jog
shuttle.
To change the cursor to be moved
Switch the [Kind] among the following:
[A] Use and move A cursor only (default).
[A-b] Use the A and B cursors.
Move the A cursor only.
[a-B] Use the A and B cursors.
Move the B cursor only.
[A&B] Use the A and B cursors.
Move the both simultaneously.
Display the waveforms eliminating overlap each other
When multi phenomenon are measured, the waveforms may overlap each other and become
dicult to observe.
When this happens, change the positions of the waveforms or the magnications on the vertical
axes on the display to recognize the waveforms easily.
Earlier Later
The START key is pressed and
measurement has started but the
waveforms overlap each other and
cannot be recognized easily.
16
Congure the setting on the waveform screen as follows.
HIOKI MR8847G963-03
Analyze data
1
2
Select the items to be set.
• Can be changed even during
measurement.
• Positions of logic waveforms can also be
changed arbitrary. ([Logic] sheet)
Displays the
Waveform window.
Displays the Channel
settings window.
([Analog] sheet).
Move the
cursor.
Congure the magnication and zero position
1
each channel.
2
Magnication
Waveform can be stretched
or compressed in the vertical
axis direction.
Zero position
The waveforms
can be placed at
other positions in a
vertical direction.
1
2
3
4
5
If direct current components are superposed on the waveform, the waveform appears to uctuate when the
magnication is changed. This is because magnication applied to the direct current component as well.
6
7
8
9
10
Appx. Ind.
17
Analyze data
HIOKI MR8847G963-03
Calculate the measurement data
Up to 16 items can be calculated at once.
The 24 calculations are provided include average value, eective value, peak value, maximum
value, minimum value, cycle, and frequency.
The following describes the calculation method for the measured data.
Congure the settings on the status screen described as follows.
Numerical Calc
Displays the status
screen ([Num Calc]
sheet).
Type
Set the calculation type.
Move the
cursor.
Set to [On].
Parameter
Set the calculation
conditions.
Channel
Select the items to be set.
Select the channel to be calculated.
Once measurement is completed, calculation automatically starts. The calculation result will be
displayed at the upper right side of the waveform screen.
(In consecutive trigger mode, the next measurement will take place after the calculation has been
executed.)
Displays the
waveform screen.
18
When the setting window or
others is displayed on the
waveform screen, pressing
the ESC key will display
the calculation results.
Access the storage medium
HIOKI MR8847G963-03
Data saved with the instrument can be observed on the le screen
Analyze data
Displays the le
screen.
1
2
3
Up/Down Select a le or folder.
Left Move to the superior
Right Move to a subordinate
Select a channel
Select a medium.
4
folder.
folder.
1
2
3
Select [Change Media].
Select a recording medium.
1
2
3
4
5
6
4
Select a le or folder.
The le is saved in the folder “HIOKI8847.”
7
8
9
10
Appx. Ind.
19
Analyze data
HIOKI MR8847G963-03
The types of data the instrument can save and load
File type File format File extension and description
Setting data*
1
Waveform data Binary MEM S, L Memory function waveform data
Binary SET S, L*2Settings data
REC S, L Recorder function waveform data
(Measurement conditions)
XYC S, L X-Y recorder function waveform
data*
1
FFT S, L FFT function data
Text CSV S Text data
Waveform management
data
(Memory division/Divided
saving)
Displayed image*
Waveform image*
1
,
1
Numerical calculation
(Index le) IDX S, L Index data for divided saving
SQR S, L Index data for memory division
(automatically created during
batch saving)
Bitmap BMP S Image data
Text CSV S Text data
result
Comment for printing Text TXT L Text data
Waveform evaluation
setting data
Binary ARE S, L Waveform evaluation areas
settings data
Waveform evaluation area Bitmap BMP S, L Image data
*1: Cannot be saved automatically (only manually).
*2: S: Savable; L: Loadable
Setting data
Multiple setting data can be saved in the instrument, and loaded selectively.
When a setting data is saved with a name of “STARTUP” in the [HIOKI8847] folder in the CF card, it is
automatically loaded when the instrument is turned on.
Waveform data
• To load data with the instrument, save them in the binary format.
• To load data with computers, save them in the text format.
Arbitrary waveform generation data
The instrument can load waveform data for Model U8793 Arbitrary Waveform Generator Unit.
20
Print the data
HIOKI MR8847G963-03
Print the measurement results.
Print the data
1. Congure the print setting
Print the measurement results according to the conditions set on the [Printer] sheet on the system
screen. Use this sheet to set other detailed settings related to the printer, such as the print density.
The setting does not have to be congured every time.
Print Select
[No] Pressing PRINT
Display the system
screen ([Printer] sheet).
Select the items to be set.
Move the
cursor.
Print Area
[Whole Wave] or [A-B Wave].
key allows a
printing job under
the congured
conditions
immediately.
[Yes] Pressing PRINT
key allows a
printing job after
the operator select
printing items.
1
2
3
4
5
6
7
8
9
10
Appx. Ind.
21
Print the data
HIOKI MR8847G963-03
2. Print the data
Congure the settings on the waveform screen described as follows.
If Print Select is set to [Yes]
1
2
Display the
waveform window.
Select the items to be printed.
3
Print
Press the STOP key to stop the current
print job.
FEED key
Feeds the paper.
Press the key to
terminate the printing
job or to increase the
space between the
printing jobs.
[Whole
Wave]
[A-B Wave] Print the waveform data in the range specied
[About Trig] Print the waveform data corresponding to 10
[List] Print the major setting items.
[Report] Print the report.(p. 23)
Print the waveform data in the whole range
(default).
by the A and B cursors (the A and B cursors will
not be printed).
divisions each on the both sides of the trigger
point.
Screen shot
Press the COPY key to take the screen shot. The display screen will be printed as it is.
Printing the waveform display only is also possible.
Press the [SYSTEM] key to display the [Printer] sheet and congure the
setting for it.
Screen shot
Set to [Yes] to print the GUI
as well as the waveforms.
22
Report printing
HIOKI MR8847G963-03
Function to print the waveform appearing on the screen not as a screen shot, but as the waveform
printing together with the setting information.
Print the data
1
Press them almost
simultaneously (Press the
FEED key a little earlier).
Display the
waveform screen.
2
Upper limit value
Channel
Lower limit value
Title
Values at the A
and B cursors
Example of Printing
A4-size printing
The A4-size printing is possible, with the same operation as for the report printing, by changing the
waveform display width.
Settings
1
2
3
4
5
1
Press them
simultaneously (Press the
FEED key a little earlier).
Display the display
switching menu on
the waveform screen
(The GUI is switched
every time the DISP
key is pressed ).
3
Change the
waveform display
width.
2
6
7
8
9
10
Appx. Ind.
23
Convenient functions
HIOKI MR8847G963-03
Convenient functions
This section introduces the convenient functions.
Auto-range function
Start the measurement by pressing the AUTO key to automatically set the time axis range, voltage
axis range, and zero position.
1. Prepare for measurement
Required items:
MR8847A Memory HiCorder
8966 Analog Unit
L9198 Connection Cord
CF card
Refer to “Preparations for
Measurement” (p. 5).
Insert the CF card.
2. Measure the waveform by the auto-range
Congure the settings on the waveform screen described as follows.
1
Display the
waveform screen.
Connect the lead to CH1.
Connect the lead to the
measuring point.
Connect the power cord
to the power outlet.
3
3
2
Auto-range
24
Execute the
auto-range
measurement.
Example
Measurement of 200 V, 60 Hz commercial power using the
auto-range function, inputting it to the Analog Unit
What is a pre-trigger?
HIOKI MR8847G963-03
It is a function that allows recording of waveforms before trigger points.
Convenient functions
Merit Useful to detect signs before abnormal occurrences happen because
parts before the trigger point are recorded.
If the pre-trigger is
not used...
Using the pre-
trigger allows you
to observe the part
before the abnormal
occurrence.
If the pre-trigger is not used, only the parts after the trigger point are
recorded. You will be able to observe the abnormal occurrence but will
not be able to detect any signs before that.
Waveforms without the pre-trigger function activated
If the pre-trigger is used, waveforms including portions of those existing
before the trigger point are recorded, allowing you to detect signs
before the abnormal occurrences happen.
1
2
3
4
5
6
Pre-trigger
30%
Waveforms with 30% of the pre-trigger setting activated
Signs will appear before any abnormal occurrence or distortion
happens.
Using the pre-trigger of the Memory HiCorder, you can observe the
parts of the waveforms existing before any abnormal occurrences, and
nd out which type of waveforms caused accidents and production
installation faults .
It is recommended using the trigger function to prevent accidents and
faults, as well as losses due to such occurrences.
7
8
9
10
Appx. Ind.
25
Convenient functions
HIOKI MR8847G963-03
Probe compensation
Probe compensation can be carried out by using Model 9665 10:1 Probe or Model 9666 100:1
Probe.
Displays the system
screen (Environment
sheet).
2
3
Execute the probe
compensation.
1
2
3
Move the
cursor.
A 1-kHz 5-V square wave is output from the external
output terminal (NG/EXT.OUT2 Terminal). The probe
compensation can be carried out by using this signal.
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Others
HIOKI MR8847G963-03
Others
Screen
The instrument LCD provides SVGA resolution (800 × 600 ). The
waveform display area consists of 625 horizontal dots and 500 vertical
dots.
The waveform display area has 25 divisions horizontally and 20
divisions vertically, with each division composed of 25 dots horizontally
and vertically.
Each data frame (one division) represents 100 samples horizontally
and 100 to 50000 least signicant bits (LSBs) vertically (depending on
the input module).
Each displayed data frame (one division) changes in accordance with
expansion and compression of the time and voltage axes.
Timebase and Sampling
For the memory function (Sampling point recording)
The sampling period is 1/100 of the timebase. When the timebase is
set to 100 ms/div, the sampling period is 1 ms. Changing the timebase
setting also changes the sampling period accordingly.
For the recorder function (Envelope recording)
In every one data point, which is 1/100 of the timebase, two values
are recorded: the maximum and minimum values obtained during the
specied sampling period.
With 10 ms/div of the timebase setting, one data point is 100 μs. When
the sampling period is set to 1 ms, one data point consists of 100
samples. The two values, the maximum and minimum values obtained
during 100 samples are recorded each data point, .
20 divisions
25 divisions
1 divisions = 100 samples
Sampling points
Sampling period
1 2 ... ...100
1 division
Maximum
Minimum
1
2
3
4
5
6
7
8
Recording Length Setting
Voltage axis and resolution
Set the time length (the number of divisions) during which data are recorded for one data recording
event.
Each division of the recording length consists of 100 data points. The number of data during the
whole recording length is calculated from the following formula:
The specied recording length (number of divisions) × 100 + 1
Example: The number of data for the specied recording length of 50 divisions
50 divisions × 100 + 1 = 5001
The resolution diers depending on input modules.
The following table shows the full scale resolution for all the modules.
The minimum resolution can be calculated from the screen full scale value and the full scale
resolution shown in the table below.
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9
10
Appx. Ind.
Others
HIOKI MR8847G963-03
Example: Measurement with Model 8966 Analog Unit
If the power voltage is measured with 20 V/div of the vertical axis range and ×1 of the vertical axis
magnication settings, the minimum resolution is calculated as follows:
Screen full scale: 20 V/div × 20 div = 400 V
Full scale resolution at ×1 of the vertical axis magnication: 2000
Minimum resolution: 400 V / 2000 = 0.2 V
Full-scale resolution for input modules at each vertical axis magnication (LSB)
Input module
8966
(Analog)
8971
(Current)
8972
(DC/RMS)
8967
(Temperature)*
8968
(High resolution)
U8974
(High voltage)
U8975
(4ch analog)
U8978
(4CH analog)
U8977
(3CH current)
8969, U8969
(Strain)
U8979
(Charge)
Magnication
×1/10 ×1/5 ×1/2 ×1 ×2 ×5 ×10 ×20 ×50 ×100
20000
(4000)
200000 100000 40000 20000 10000 4000 2000 1000 400 200
320000
(64000)
250000
(64000)
10000
(4000)
160000
(64000)
125000
(64000)
4000 2000 1000 400 200 100 40 20
64000 32000 16000 6400 3200 1600 640 320
50000 25000 12500 5000 2500 1250 500 250
8970
(Power frequency)
8970
(Integration)
8970
(Excluding power
frequency and
integration)
MR8990
(DVM)
The gures enclosed in parentheses indicate valid data range.
*: For Model 8967 Temp Unit, the valid ranges dier depending on types of thermocouple. For information on
the minimum resolution, see the specications of Model 8967 Temp Unit in the instruction manual.
20000 10000 4000 2000 1000 400 200 100 40 20
400000 200000 80000 40000 20000 8000 4000 2000 800 400
100000 50000 20000 10000 5000 2000 1000 500 200 100
1200000 1200000 1200000 1000000 500000 200000 100000 50000 20000 10000
Data Saving Speed
The table lists the speeds of saving binary data
(values used as a reference) using dierent media
and interfaces. Note that the data saving speed
varies depending on the saving conditions, device
manufacturer, device capacity, communication
conditions, and others.
Storage media Saving speed
(As a reference)
CF card 800 kB/s
Built-in drive (SSD) 800 kB/s
USB ash drive 800 kB/s
Computer via LAN 1 MB/s
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HIOKI MR8847G963-03
HIOKI MR8847G963-03
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