Connecting Signal Lines; Connecting To Remote Devices; Balanced Line Application; Figure 1 Connections On The Back Of Model 300Vsc - Federal Signal SelecTone Command Units 300VSC-1 Manuel D'installation Et D'entretien

Connecting Signal Lines

See Figure 1. To connect the signal lines of the SelecTone system to the 300VSC, connect a color-
coded twisted pair of audio cables having conductors no smaller than 18 AWG to the
TB1
terminals on . Every remote SelecTone signaling device in the system can be connected in parallel
or series to these lines.
For non-SelecTone 25 Vrms speakers, such as ceiling speakers, connect the signal lines directly to
TB1-4 TB1-5
and
many speakers can be connected to the 300VSC.
1 2 3 4 5 6 7 8
SHIELDED TWISTED
PAIR SIGNAL LINES

Connecting to Remote Devices

Install the remote SelecTone device(s) following the instructions included with the device.

Balanced Line Application

For 300GC, 300GCX, 300X, 302GC, 302GCX, 302X, or 50GC speakers, an AM25CK Connector Kit is
required for connection to the balanced signal output of the 300VSC. The AM25CK properly terminates
the balanced signal lines to the amplifier in the 300GC, 300GCX, 300X, 302GC, 302GCX, 302X and
50GC. As shown in Figure 2 on page 12, connect the white input wires on the AM25CK to the terminals
TB1-4 and TB1-5
are NOT polarity sensitive, but you must observe polarity when placing speakers in close proximity to
each other.
Model 300VSC-1 and Model 300VSC-1044SB SelecTone Command Units
CROSSTALK/INTERFERENCE HAZARD — Mixing power lines with signal
lines can cause cross talk, interference, or hum in the signal lines, which
interferes with the emergency warning capability of this equipment. Do not
install power lines in the same conduit as signal lines.
SHOCK HAZARD — Do not install signal lines in the same conduit with power
lines. Avoid routing signal lines on cable trays with high voltage power lines.
TB1
of terminal block . Signal line losses must be considered when calculating how

Figure 1 Connections on the back of Model 300VSC

9 10 11 12 13 14 15 16 17
TB1
of terminal block TB1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
FROM EXTERNAL
SWITCHING DEVICES
on the 300VSC. The AM25CK and AM70CK Connector Kits
Installation and Maintenance Manual
TB1-4
LEVEL CONTROLS
TB2
TB1-5
and
POWER CORD
CONNECTOR
11