Difference between revisions of "FBSAR - PA interface"

Revision as of 15:07, 1 December 2008

Calling through PA System

Feature Description

The AlphaCom can distribute audio through separate loudspeakers for announcements and music distribution. This audio can be distributed via an FBSAR board. When loudspeakers without amplification are used, there must not be more than 20 such loudspeakers in one system. Such loudspeakers can only be connected via a FBSAR board.

Equipment List

AlphaCom System with desired station range
PA system / additional loudspeakers
Filter Board with Speech Adapter FBSAR 1009505000

One FBSAR can feed two speakers or two PA amplifiers from two subscriber lines.

Installing the FBSAR board

Fasten the FBSAR board onto one of the mounting rails on the distribution field.
Supply the board with 24 V and 0 V (GND) from the Power Distribution Board. Use a 1-pair ordinary installation cable for this purpose; the cable is not supplied with the board.
Run the wires according to Figure 15-4. Audio output connection is done from the Subscriber Connection Board.
Check the switch settings.

Switch setting	Function	Comments
S2 Level Adjustment	Channel 1 only
1-2	Additional attenuation
2-3	Normal attenuation
S3 Low/Loudspeaking	Channel 1 only	1-2	Lowspeaking	2-3	Loudspeaking
S5 Dual Relay Control	Closed	Dual Relay control	Alphacom only	RP2 Output level adjustment	Channel 1 only	Adjusting PA volume

@@ Line 23: / Line 23: @@
 ! Comments
 |-
-| S2 Level Adjustment ||Channel 1 only ||
+| '''S2 Level Adjustment''' ||Channel 1 only
+|-
 | 1-2 || Additional attenuation
+|-
 | 2-3 || Normal attenuation
 |-
-| S3 Low/Loudspeaking || Channel 1 only ||
+| S3 Low/Loudspeaking || Channel 1 only
 | 1-2 || Lowspeaking
 | 2-3 || Loudspeaking