Installation guide

3. Cabling
8620-A2-GN20-50 June 2004
3-9
Connecting CO Alarm to the Alarm System
The following procedure is optional. Follow this procedure only if you want to
connect to a CO alarm system. See 8-Pin Modular Connector for Alarm Relay
Interface in Appendix A, Pinouts, for pinout information.
Procedure
To connect the 8620 BAC to a CO alarm system:
1. Plug the 8-pin modular cable into the ALARM connector on the front of the
8620 chassis.
2. Remove the modular plug connector at the end of the cable, strip the wires
and connect to the desired CO alarm system outputs.
Connecting Clock Sources to Clock A and Clock B
The following procedure is optional. Follow this procedure only if you want to use
external BITS (Building Integrated Timing Supply) clocking in an SCP-based
chassis. See 8-Pin Modular Connectors for Clock A and Clock B in Appendix A,
Pinouts, for pinout information. See Configuration - System Clock in the SCP
card’s online Help for information about clocking and clock switching.
Procedure
To connect the 8620 BAC to an external clock:
1. Plug the 8-pin modular cable into the Clock A or Clock B connector on the
front of the 8620 chassis. The active SCP card has access to both connectors.
2. Connect the other end of the cable to the BITS clocking source.
00-16911
Alarm
ALARM
CLOCK
AB
SERIAL
SCM MCP
LAN
SCM MCP