Programming instructions

9
Section 3
System Expansion
Concept
In situations where it is necessary to extend beyond 9 zones of paging, satellite
systems and a master must be used. Each satellite system is responsible for the
specific group of zones as determined by the setting of its SYS ID DIP switches.
The master system transmits its commands on the Data Link bus to all satellites at
the same time, but only the specifically addressed satellite responds.
NOTE: A satellite system consists of 1 PCMCPU module and 1 to 3 PCMZPM
modules. PCMTIM and PCMTBM modules are not used and will not work in a
satellite system.
Audio Wiring
Audio wiring is daisy-chained from one assembly to another. The illustration on
page 15 shows the daisy chain audio wiring between system assemblies (wiring to
the BGM sources is only done on the master system). The same wiring scheme is
used between adjacent assemblies.
Data Link Wiring
The DATA LINK ports of the system's PCMCPU modules are connected using RCA
cables. For a system with one satellite, a standard male-to-male RCA cable can be
used. For systems with more than one satellite, the recommended interconnecting
cable consists of a single female RCA connector with two male RCA connectors
(see illustration below). It is also recommended that the distance between adjacent
satellite systems does not exceed 3 feet, and that all DATA LINK connections are
securely made and well seated. Bad connections will result in operational failures
and/or inconsistent operation.
Connect to DATA COM port on
Master PCMCPU
Connect to DATA COM port on Satellite
PCMCPU.
This plug not used.
This jack not used
on last Satellite.
PCMCPU