Hioki LR8431-20 - Synchronous Measurements with Multiple  Instruments

9.5 Synchronous Measurements with Multiple Instruments
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Chapter 9 External Control
Multiple instruments can be synchronized using the external control terminals.
Parallel synchronization
Set one instrument to master, and set the others
to slave.
9.5 Synchronous Measurements with 
Multiple Instruments
GND
EXT.TRIG
TRIG OUT
GND
Connection example
EXT.TRIG
TRIG OUT
GND
EXT.TRIG
TRIG OUT
GND
Master
Slave
Slave
Set the master instrument.
1 Press the SET key to open the [System]
screen.
2 Set the [Trig Out] setting to [Start].
Set the slave instrument.
1 Press the SET key to open the [System] screen.
2 Set the [External Trg In] setting to [Trigger].
3 Press the SET key to open the [Trig&Alm] 
screen.
4 Set as follows.
Trig Func: On
Timing: Start
Trig Source Start: OR
Ext Trig Start: On
Turn the start trigger setting for all the channels 
(analog, pulse) to
Off. Failure to do so may start the
measurement without synchronization.
Press the START/STOP key of the slave instrument to start the measurement (trig-
ger waiting state). In this state, press the START/STOP key of the master instru-
ment to start the measurement. The slave instrument will start the measurement at
the same time.
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