AT&T System 75 8520T User Manual Page 42

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configuration table near the beginning of
Chapter 2.
Adjunct Communicator Module
Model 8322
Description: This option provides 8 different
output lines, driven by the system program to
indicate alarms. It is active even if the system is
programmed for “Local” operation in
Fn#ll3
(see
Chapter
3)
and selected as a backup or parallel
reporting path by
Fn#ll5.
This output can be
used to activate an additional (or primary) output
device, such as another dialer or a radio transmit-
ter.
Mount/Install: This must be done before the Main
board is mounted. Refer to Figure 2-13. Notice
that the base strip and the circuit board have the
mounting holes off center, creating a “wide” side
and a “narrow” side. Place the base strip over the
studs on the lower right side of the CCU, with the
“wide” side facing out. Then place the small
stand-offs into the space between base strip and
stud. This stand-off is necessary to provide good
electrical ground to the board. Finally place the
circuit board on the studs, also with the “wide”
side (terminal strip) facing out. The edge of the
base strip should support the edge of the circuit
board. Tighten the nuts onto the studs to retain
the board without coming loose, but not tight
enough to damage the board.
Settings/Connections: Terminal connections
COM1
through COM8 correspond to 8-channel
reporting messages indicated for programming
Fn#235
in Chapter 3 (Programming), and GND is
the signal ground:
.
COM1
=
Perimeter Intrusion
COM2 = Interior Intrusion
COM3
=
Silent Panic
2-19a AT&T Security System 8300 Installer’s Manual
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