User Manual

447
────────────────────────────────────────────────────
17.2 External Trigger Input Terminal [EXT TRIG]
────────────────────────────────────────────────────
16
17
18
19
5
6
7
8
9
1
0
1
1
1
2
1
3
1
4
A
3.3 kΩ
5V
470 Ω
GND
EXT TRIG
HIGH
2.5∼5.
0V
LOW
0∼1.
0V
min. 2μs
min. 1 ms
2200 pF
NOTE
1
7.2 External Trigger Input Terminal [EXT TRIG]
・An external signal can be used as trigger source.
・Several 8826 units can be synchronized for parallel operation.
Signal input method
・Short the terminal to ground, or input a pulse signal (High level: 2.5 to 5.0
V, Low level: 0 to 1.0 V) or a square wave signal.
・Triggering is activated at the falling edge.
Voltage range High level: 2.5 to 5.0 V, Low level: 0 to 1.0 V
Pulse width High level: min. 1 ms, Low level: min. 2μs
Maximum input voltage -5 to 10 V
The external trigger input (EXT TRIG) cannot be used, unless the external
trigger is enabled on the TRIGGER screen.