Specifications

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Cisco IGX 8400 Series Provisioning Guide, Release 9.3.3 and Later Releases
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Chapter 2 Cisco IGX 8400 Series Cards
Alarm Relay Module
Alarm Relay Interface Back Card
The alarm relay interface (ARI) back card contains the alarm relays and their associated relay drivers.
Alarm outputs are dry contact closures from form C relays. The user must supply the voltage source to
be switched by the IGX. Any source or load can be switched if it meets the following requirements:
• Voltage source, maximum 220 volts
• Steady-state current, maximum 0.75 amps
• Power dissipation, maximum 60 watts
A female DB-37 connector resides on the faceplate for connection to the customer’s office alarm or
alarm-reporting system. For information on connector pinouts, see the “External Alarm Cabling” section
on page A-50 in the Cisco IGX 8400 Series Installation Guide.
Refer to Figure 2-5 for an illustration of the ARI faceplate.
ACO push button When pressed, this button silences the audible alarm and turns on the ACO
LED. Visual alarms remain on.
HIST CLR push button When pressed, this button turns off the HIST LED if there are no current
alarms.
Table 2-6 ARM Front Card LEDs (continued)
Faceplate Item Meaning or Description