Hioki LR8450, Instruction Manual

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13
Setting Measurement Conditions
Unit Measure Channel Trigger Alarm Calculation System
Measurement module data refresh intervals
This section describes how to set the data refresh interval for each measurement module
separately from the instrument’s recording interval.
Data refresh interval Interval at which measurement modules refresh measurement data
Recording interval
Interval at which the instrument captures data from measurement
modules
>
A list of connected modules will be displayed.
• [Unit 1] to [Unit 4] : Plug-in modules
• [Remote 1] to [Remote 7] : Wireless modules
1 1 2 2
1
Under [Update] , select the data refresh interval.
Auto

, 1 ms , 2 ms , 5 ms , 10 ms , 20 ms , 50 ms , 100 ms , 200 ms , 500 ms , 1 s , 2 s , 5 s , 10 s
Ordinarily, this setting should be set to [Auto] . When you choose [ Auto ] , the shortest data refresh interval will
be set for each module based on the recording interval.
The available data refresh interval settings vary with the modules in use and the wire break detection setting.
Wire break detection
U8550, U8551,
LR8530, LR8531
U8552, LR8532
U8553, U8554,
LR8533, LR8534
OFF From 10 ms*
1
From 20 ms*
2
From 1 ms*
4
ON From 20 ms*
1
From 50 ms*
3
*1: Settings start at 100 ms when using a Pt1000 with the U8551 or LR8531.
*2: When using 15 or fewer channels, the 10 ms setting is available.
*3: When using 15 or fewer channels, the 20 ms setting is available.
*4: No wire break detection function is available.
• When the data refresh interval is set to a value other than [Auto] , it is recommended to use
longer times.
This will allow you to reduce the digital filter’s cutoff frequency to eliminate low-frequency noise.
• You can eliminate power supply frequency noise by setting the data refresh interval so that the
[Filter] setting is 50 Hz or 60 Hz.
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Settings and Operation