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Relay Alarm/Status Outputs
3.17.5
Eight alarm relay outputs and seven status relay outputs provide relay closure to ground
(provisioned NO) or open (provisioned NC) when activated. All relays default to open if
card power is lost, except the Power Supply alarms, which default to ground. The maxi-
mum contact rating for each relay is 0.5 A, 100 Vdc. The alarm/status relay outputs are:
• Alarms:
•
Path Alarm– This summary alarm is activated by the following alarms:
A/B Path Distortion
A/B AGC Threshold
•
Loss of Input Alarm– This summary alarm is activated by the following alarms:
Loss of DS3 input
Loss of optical input (OC3)
Loss of wayside DS1 input
•
A XMT – A-side transmitter failure. This summary alarm is activated by any of the
following alarms on the A side:
XMT SYNC Alarm
RF Power Alarm
Common Loss Alarm
ATPC Timeout
MUX Input Loss Alarm
•
B XMT – B-side transmitter failure. This summary alarm is activated by any of the
following alarms on the B side:
XMT SYNC Alarm
RF Power Alarm
Common Loss Alarm
ATPC Timeout
MUX Input Loss Alarm
•
A RCV – B-side receiver failure. This summary alarm is activated by any of the fol-
lowing alarms on the A side:
Channel Alarm
RCV Frame Loss
Eye Closure
RSL Alarm
3-47
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