F) Paging Interface; Fig. 20 Paging Interface Board - Whelen Engineering Company WPS-2900 Series Installation Manual

f) Paging Interface (optional)
The WPS-2900 may be equipped with an optional module that allows the user to broadcast
siren tones, digital voice messages or public address through existing in-plant public address
systems.
The audio output of the Paging Interface Module is a 600 ohm, transformer coupled signal.
This output interfaces with most industry standard paging systems. A level adjustment
potentiometer allows the user to set the siren output to a desirable level, through the public
address system.
The Paging Interface Module also has an output relay that makes a 1 amp rated, contact
closure whenever the siren audio is active. This is typically used to perform the in-plant PA
microphone "Push-To-Talk" function.
Customer Interface
Connection
J3-1
J3-2
J1-1
J1-2
Fig. 20: Paging Interface Board
J2
Output Function
Audio Out
Audio Out
N.O., 1 Amp Contact
N.O., 1 Amp Contact
Page 38
Connector J2
(factory wired) Input Function
1 Bias Input
2 PA Relay
3 Audio In
4 Audio In
5 +12VDC
6 Ground
7 not used
J1
Normally Open
Relay Contact
J3
Audio Out
600 ohm