Hioki MR8847A User manual

Read rst.
Offers an introduction to the Memory
HiCorder's basic measuring method
for rst time users.
MR8847A
MR8847-51
MR8847-52
MR8847-53 Measurement Guide
MEMORY HiCORDER
EN
Apr. 2021 Revised edition 3
MR8847G963-03 21-04H
HIOKI MR8847G963-03

HIOKI MR8847G963-03

1
Introduction
Introduction
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
1 Measurement Guide
(This document)
Read rst.
O󰀨ers an introduction to the instrument’s basic measuring method
for rst time users.
2 Instruction Manual
(book)
Contains explanations and instructions regarding the instrument’s
operating methods and functions.
3 Communication
Command Instruction
Manual (PDF le)
Contains lists of the communication commands to control the
instrument with a computer and explanations regarding the
commands.
4 U8793, MR8790, MR8791
Instruction Manual
(PDF le)
Contains explanations and instructions regarding the operating
method as well as functions of the following models: U8793 Arbitrary
Waveform Generator Unit, MR8790 Waveform Generator Unit,
MR8791 Pulse Generator Unit, and SF8000 Waveform Maker
Contents
Screen structure and operation
overview
The screen structure and overview of the operation keys of
the instrument
(p. 2)
Preparations for Measurement The things to be done before carrying out measurement (p. 5)
Measurement Procedure The procedure from pre-measurement check to analysis,
saving, and printing.
(p. 7)
Measure the commercial power
supply
How to record waveforms of a 200-V commercial power
supply
How to save the data.
(p. 9)
Monitor abnormal occurrences How to record a voltage drop including power failure as an
example of special occurrences
How to record only abnormal occurrences, constantly
monitoring waveforms using the trigger function
How to save the data automatically
(p. 12)
Analyze the data How to observe waveform measured values and calculate
them using the A and B cursors
How to prevent the measured waveforms displayed on the
screen from being overlapped
(p. 14)
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,
voltage axis and resolution, le transfer speed
(p. 27)
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Screen structure and operation overview
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
Trigger settings
window
Sheet tabs
Displays selectable sheet
names.
The screen to set measuring methods and
waveform calculations
The window to set
details for analog or
logic channels
The window to set
details for triggers
System screen Channel screen
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
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Screen structure and operation overview
Operating Keys
1
2
3
6
4
5
9
10
11
13
14
15
16
12
87 1DISP key
Displays the waveform
screen.
8STATUS key
Displays the status screen.
2CH.SET key
Displays the channel
settings window in the
waveform screen.
9CHAN key
Displays the channel
screen.
3TRIG.SET key
Displays the trigger settings
window in the waveform
screen.
10 FILE key
Displays the le screen.
4Fkey
Select items to be set.
11 AB CSR key
(Lit in red while selected)
Displays the A/B cursor
settings window.
5ESC key
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.
12 WAVE key
(Lit in red while selected)
Assigns the waveform
scrolling to the jog and
shuttle knobs.
13 Inner: Jog
Outer: Shuttle
Scrolls through waveforms.
6STOP key
Stops the running
measurement.
1 press:
Measurement stops after
the set recording length.
2 presses:
It stops immediately.
14 CURSOR keys
Moves the cursor displayed
on the screen.
15 Manual trigger key
Issues a manual trigger
event.
7SYSTEM key
Displays the system
screen.
16 START key
Starts a measurement.
(Lit in green during
measurement operations)
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Screen structure and operation overview
17 18 19 20 21 22 23
17 PRINT key
Prints waveforms and others.
21 HELP key
Opens the help information.
18 COPY key
Prints a screen shot.
22 AUTO key
Starts auto-range measurement.
19 FEED key
Feeds the recording paper.
23 TIME/DIV key
Congures the time axis setting.
20 SAVE key (Lit in blue while accessing a recording medium)
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.
1
Move the setting cursor to an item to be set.
2
Select an option
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Preparations for Measurement
Preparations for Measurement
Before using the instrument, refer to “Operating Precautions” in the Instruction Manual.
Install the instrument
To prevent overheating, be sure to leave the specied clearances around the instrument.
All around
the instrument,
at least 5 cm
Left side
Vent holes
Set the items necessary to the instrument
1
Connect the probes and
cords. 1
2
4
2
3
Refer to the Instruction
Manual for details.
Right side
Front
Left side
2
Insert the USB ash
memory or CF card.
3
Set the recording paper.
4
Connect the power cord.
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Preparations for Measurement
Turn on the instrument
Right side
Power On( )
Set the clock
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 di󰀨erences and sets the reference potential of the
instrument to 0 V.
To ensure precise measurements, perform zero-adjustment after 30-minute warm-up.
1
2
Congure the setting on the [Unit List] sheet.
1
Move the cursor to this position.
2
Select [Exec Zero-Adjust].
Tip
[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)
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Measurement Procedure
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
Congure the setting on the
waveform screen.
• Measurement function
• Timebase (horizontal axis)
• Recording length
On the Channel settings window of
the [Analog] sheet, congure the
settings.
• Voltage (vertical) axis range
Congure other settings if necessary.
Start and stop the measurement
Start the measurement Stop the measurement
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Measurement Procedure
Analyze, save, and print the data
Analysis
Scroll through the waveforms to observe them.
The displayed waveforms can be changed.
(It can be stretched or compressed.)
Save
Save the data.
The data can be also automatically saved under
the pre-congured saving conditions.
Observe the saved data.
The data can be loaded, and les can be deleted
and copied.
Print
<Example of print>
Print the recorded waveforms.
HIOKI MR8847G963-03