Measurement Guide (Memory Recorder)
MR8870-20
MEMORY HiCORDER
May 2014 Edition 1 MR8870B980-00 14-05H
Introduction
Introduction
Thank you for purchasing the HIOKI "Model MR8870-20 Memory HiCorder."
This Measurement Guide Memory Recorder E dition consists of some basic application examples. Before using the instrument, be sure to rea
carefully.
d the Instruction Manual
1
Operation and Screen
Types (p. 2)
Measurement Proced u r e
(p. 4)
Commercial Power Mains
Measurement (p. 6)
To Monitor for Abnormal
Phenomena (p. 8)
To Measure Current (p. 10)
Describes the screen types and an overview of the
operating keys
Describes procedures from measurement preparation to analysis
Shows the method for recording 220 V commercial
mains waveforms, and describes how to save data
after measurement.
Describes how to record abnormal phenomena
such as voltage drop like those that occur during
electrical outages as an example type of phenomena.
Also describes continuous monitoring using the trigger function to record only particular phenomena,
and
automatic saving while measuring.
Describes how to record current waveforms using a
clamp-on probe, and how to use the scaling function
to display current values.
Measuring RMS Waveforms
(p. 11)
Analysis (p. 12)
The instrument records RMS waveforms f or commercial power supply (50 Hz,60 Hz) and DC signals.
View and calculate waveform measurement values
using the A/B cursors.
2
Select the item to
change.
Show available
setting options.
Select the desired
setting.
Changing screen contents
CF Card Slot
Logic Connector
External control terminals
AC Adapter
Socket
CHARGE LED
USB Port
POWER
Switch
Operating Keys
(Rear)
Battery
Compartment
Apply the new setting,
or cancel it.
BNC Terminals
WAVE/DATA
Selects among waveform
screen displays (p. 3).
SET
Displays the Settings
screens, and switches
among the screen tabs with
each press (p. 3).
FILE
Displays file info rmation
(p. 3).
GAUGE
Alternately displays and
hides the measurement
scale on the Waveform
screen.
(Manual trigger)
Press to trigger manually.
ESC
Cancels changes to settings.
Cursor Keys
Moves the position
of the cursor (blinking selection) on
the screen.
ENTER
Accepts displayed
settings.
KEY LOCK
Disables keypad
operations. Press
and hold the left
and right cursor keys simultaneously for three seconds
to lock and unlock the keys.
Press to save data manually (p. 7).
Press the center key to select waveform scrolling or
A/B cursor movement, then
press the left and right cursor keys to scroll or move
(p. 12).
Setup and display
Saving operations
Scroll waveforms and
read cursor values
Choose a screen
Start and stop measurement. The LED at the left
lights green while measuring.
Start and stop
measurement
Operating Keys
Operation and Screen Types
Operation and Screen Types
The screen switches each time you press the key. Operational information is dis-
Waveform Screen Numerical Screen
Waveform/Numerical Screens
Settings Screens
Setting Screen Calc/Save Screen
Comment Screen System Screen
File Screen
Press the left/right
cursor keys to select between the
Settings screens.
played along the bottom of the screen.
3
Operation and Screen Types
4
Install the battery pack (option)
Rear View
We recommend using the battery pack to provide backup during power outages,
and to preserve measurement data.
Connect the power co rd
Top View
Connect the measurement cable
When using a logic probe
When using a connection
cable or clamp sensor
Top View
BNC jack
Logic connector
Insert a CF card (option)
Top View
Confirm that sufficient free space
is available, and for auto-saving,
that a CF card is inserted before
measuring.
Turn the power on
Right Side View
Measurement Procedure
Measurement Procedure
Before measuring, be sure to read the "Usage Notes" in the Instruction Manual.
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