User Manual
A9000
AC Power Source
108
│
www.deltaww.com
Appendix A TTL Pin Assignment
9-PIN D-SUB female connector
Pin
number
1
2
3
4
5
6
7
8
9
signal
GND
Remote Inhibit
GND
AC-ON
---
GND
GND
FAULT-OUT ---
Remote Inhibit
:
OFF
:
Disable remote inhibit output function.
LIVE
:
AC source will turn off (turn on) output when TTL signal is low (high).
TRIG
:
When TTL signal changed from HIGH
→
LOW, and keep at low status
longer than 1ms, output will be turned off and stop detecting TTL signal. User must
press
OUT
to resume output and enable TTL detection.
EXCITE
:
In operation of LIST, PULSE or STEP modes, when at triggering page (please
refer paragraph 4.2~4.4), AC source output will be triggered on/off by positive
edge TTL trigger signal (LOW
→
HIGH). Pulse signal must stay at high level at
least 1ms.
AC-ON
:
High (low) level when AC source output status is ON/OFF.
FAULT-OUT
:
LOW (HIGH) when AC source is in normal (protection status due to error)