55
HARD ALARM OUTPUT
The Alarm Output provides one open collector transistor alarm output to trigger alarming devices. Upon an Exception,
a VSSI-Pro can be programmed to trigger a VCR to go to its fastest record time, have a Quad go full screen, home a
switcher, trigger a preprogrammed PTZ, or provide visual or audible alarms.
Following are some basic circuit designs to take advantage of the Alarm Output.
1 0 K
R E S I S T O R
+ 5 V D C
E X B O A R D
A L A R M 1
TTL
R E L AY
+ 1 2 V D C
E X B O A R D
A L A R M 1
RELAY
LE D
1 K
R E S I S TO R
+1 2 V D C
E X B O A R D
A L A R M 1
LED
Figure 1G: Hard Alarm Output
HARD ALARM OUTPUT
APPENDIX G
VSSI-Pro VIDEO SERIAL ATM INTERFACE
