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Model 300MB-SD CommCenter Series D1
Federal Signal
www.fedsig.com
Typical Installations of the 300MB
Interfacing with a Central Amplified System
In this installation, the CommCenter is acting as an audio input to a central amplifier.
Message playback can be added to an existing centrally amplified paging system. See
Figure 9.
Figure 9
Model 300MB with central amplifier connections
GROUND
290A7334
10
1
1716
1
TB2
TB1
GAIN
CNTR
MODEL 300MB
CENTRAL AMPLIFIER
SIGNAL LINES
SHIELDED
TWISTED PAIR
120/240 Vac
TB1-16
TB1-17
SIGNAL COMMON
MICROPHONE OUT
TO ADDITIONAL SPEAKERS,
40 OHMS MAXIMUM LOAD
AUDIO INPUT
As a Typical Central Power System
In this installation a 24 Vdc power supply, such as a Model PS600, is driving the
CommCenter and one or more speakers. For additional information, including jumper
removal, see "For 24 Vdc Operation" on page 19. See Figure 10.
Figure 10 Typical central power system
290A7517
GROUND
10 8 7
1
15
1
TB2
TB1
GAIN
CNTR
MODEL 300GC
24 Vdc
MODEL 300MB
AM25CK
120/240 Vac
NOT USED WITH THE MODEL PS600
24 Vdc
POWER SUPPLY
+
–
–
SIGNAL LINES,
SHIELDED TWISTED PAIR
+
OUTPUT
POWER
LINES
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