Videoswitch VS-28 - Manual (Page 10)

VS Series 2 User Manual Page 8
Video Switch VST605C.DOC
6. Alarm Connector Pin-out
The VS-12A, VS-14A and VS-28A have alarm inputs and outputs to which
connection is made via the 25-way D-type connector on the rear of the unit. The pin
numbers are detailed below (note that the VS-12, VS-16 and VS-28 are fitted with
only a dummy connector).
View of Female 25-way D-type Connector on rear of switcher:
Signal Pin
Alarm Input 1
8
Alarm Input 2 21
Alarm Input 3 9
Alarm Input 4 22
Alarm Input 5 10
Alarm Input 6 23
Alarm Input 7 11
Alarm Input 8 24
Alarm Common (Ground) 20
Relay N/O Contact 12
Relay N/C Contact 13
Relay Common 25