Hioki LR8450, Instruction Manual

Page: 32 / 310

28
Configuring Input Channels
5
Under [Filter] , select the cutoff frequency.
Auto
 ,
120 Hz
,
60 Hz
,
30 Hz
,
15 Hz
,
8 Hz
,
4 Hz
When [Auto] is selected, the low-pass filter’s cutoff frequency will automatically be set as described
in the following table based on the set data refresh interval:
Data refresh interval Cutoff frequency Data refresh interval Cutoff frequency
1 ms 120 Hz 200 ms 4 Hz
2 ms 60 Hz 500 ms 4 Hz
5 ms 30 Hz 1 s 4 Hz
10 ms 15 Hz 2 s 4 Hz
20 ms 8 Hz 5 s 4 Hz
50 ms 4 Hz 10 s 4 Hz
100 ms 4 Hz
6
On the [Wave+Set] screen, press the ENTER key while [Auto-bal] is selected on the bottom
right of the screen.
Auto-balancing will be performed for all channels of the Strain Unit.
Perform this step under the following conditions:
• Turn on the instrument and wait 30 minutes.
• Connect a strain gage or strain gage-type converter to the module; however, do not apply any
loads, including vibration.
• Connect the B and D inputs terminals with one another when measuring voltage.
Auto-balancing cannot be performed while measurement is in progress.
Key operations are ignored while auto-balancing is in progress.
Auto-balancing can also be performed using the [Auto-balance]
button on the top right of the channel list screen. Press the
ENTER
key to display the settings window.
Select the checkboxes for the channels for which you wish to
perform auto-balancing. Then press the ENTER key while [Execute]
is selected.
Press the ENTER key while [All] is selected to select or cancel
auto-balancing for all channels at once.
See “1.7 Configuring Channels in a List” (p. 50).
Perform auto-balancing again in the following circumstances:
• When the input types have changed
• When the range has changed
• When module connections have changed
• When the strain gage or strain gage-type converter has changed
• When the instrument’s power has been cycled
• When the instrument’s settings have been initialized
• When the ambient temperature has changed abruptly (when the zero position may have drifted)
If auto-balancing fails, check the following:
• Is the strain gage or strain gage-type converter in a no-load state?
• Is the strain gage or strain gage-type converter connected properly?