Hioki MR8880-20, Instruction Manual

Page: 231 / 300

12.3 External Signal Output (Trigger Output)
221
Chapter 12 Ext
ernal Cont
rol
12
You can output a signal when a trigger event occurs. This allows synchronous oper-
ation of multiple Memory HiCorders by parallel triggering (p. 226).
For the external trigger setting procedure, see "Applying Trigger with External Input
Signal (External Trigger)" (p. 127)
12.3 External Signal Output (Trigger Output)
Pulse wave is output.
Trigger event occurs
TRIG.OUT
Trigger Output Signals
Output signal Open drain output (with voltage output), Active Low
Output voltage range HIGH level: 4.0 to 5.0 V, LOW level: 0 to 0.5 V
Pulse width Level: Sampling period x (number of data since trigger –1) or
longer (2 µs or longer) (for trigger synchronization operation)
Pulse: 2 ms ±10% (for external synchronization)
Maximum switch rating 5 to 30 VDC, 200 mA
10 k
Ω
5 V
TRIG.OUT
GND
HIGH
4.0 to 5.0 V
LOW
0 to 0.5 V
2
μ
s or greater
• When triggering is not otherwise used, a trigger signal is output during
measurement.
A trigger signal is also output when the Auto Range function is used,
so be careful when using both Auto Range and the trigger output sig-
nal for triggering other devices.
• When using an external trigger to synchronize multiple instruments,
make sure you set the external trigger output to [Level] on the Sys-
tem screen of the external trigger input.