Alpha Technologies Serial System Controller User Manual
Page 21
1. System Overview
21
018-332-C0-002 Rev. B
© 2001
TM
Figure 1-11; Tamper Switch Pin Arrangement
1.2.9 Tamper
The SSC monitors cabinet intrusion sensors, and will report an alarm via the digital
transponder interface when a door opens. The Tamper port (2-pin header) is
specifically designed to be compatible with the existing magnetic or mechanical
tamper switches in Alpha Technologies' products.
To disable the tamper switch intrusion alarm, press the Reset switch three times
within the first thirty seconds of alarm activation. The alarm can also be disabled by
asserting the Tamper Disable software switch via the digital transponder. As a safety
feature, the SSC will not allow remote control operations if the tamper switch is
active or disabled.
The tamper alarm will reset when all doors on the cabinet are closed. In the event
that the door is not properly closed, the SSC will re-enable the tamper function
after a 60-minute time-out.
1.2 Indicators & Connections, continued
1
(Note: Pin-outs are numbered in figure 1-10 for reference only. There is no polarity
requirement for this connection.)
2
1
Pin #
Description
1
Tamper
2
Return (ground)