Hioki LR8450, Instruction Manual

Page: 182 / 310

179
Configuring External Input/Output (I/O) Terminals
Unit Measure Channel Trigger Alarm Calculation System
External trigger input
This section describes how to input a signal from an external source to activate a trigger.
You can use a signal from another device to start measurement with the instrument. The external
input I/O 3 terminal is used for this functionality.
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1
Under [External input 3] , set the terminal functionality to [Trigger input] .
When [External trigger] is set to [ON] , the parameter will be set to [Trigger input].
See “2.5 Applying Triggers Based on External Sources” (p. 94).
2
Select the edge at which to activate the trigger.
↑ Activates the trigger at the rising edge when changing from low level to high level.
↓  Activates the trigger at the falling edge when changing from high level to low level.
The trigger will also activate if the I/O 3 and GND terminals are shorted.
It is recommended to actually input the signal and verify whether the external trigger operates.
8
External Control (EXT
. I/O)