Aiphone KAH-12 - Manual (Page 7)

SPEAKER Ph
ON STATION
8
STAT
1) Extend conductors from the phone network plus (+), minus (—) and an unused number terminal to
plus (+), minus (—) and C on the PA-1.
2) Using shielded cable, connect the background music source to terminals M and G on the PA-1.
3) Using shielded cable, connect terminals A and G on the PA-1 to the AUX (or PROGRAM) input of
the paging amplifier.
Each PA-1 provides a separate block and channel for paging.
CONNECTION OF PA-1 BLOCK PAGING ADAPTOR
AMPLIFIER REQUIREMENTS
* Input:
* Output: AUX; more than lOK ohm, —10 dbm..
Less than 100 watt RMS with either 25, 70 or 100 volt line.
BACKGROUND MUSIC REQUIREMENTS
* Use audio output: RANGE; 100 mV — 1.2 V, 600 ohm — lOK ohm.
CONNECTION OF PA-2 BLOCK PAGING ADAPTOR WITH TALKBACK
1) Extend conductors from the phone network plus (+), minus (—) and an unused number terminal to
plus (+), minus (—) and C on the PA-2.
2) Using shielded cable, connect the background music source to terminals M and G on the PA-2.
3) Using shielded cable, connect terminals A and G on the PA-2 to the AUX (or PROGRAM) input of
the paging amplifier.
4) Connect the output of the amplifier 25, 70 or 100 volt line to terminals V, V on the PA-2.
5) Connect speakers to terminals SP on the PA-2.
Each PA-2 provides a separate block and channel for paging with talkback.
AMPLIFIER REQUIREMENTS
* Input:
* Output: AUX; more than lOK ohm, —10 dbm.
Less than 100 watt RMS with either 70 or 100 volt line.
Less than 60 watt RMS with 25 volt line.
BACKGROUND MUSIC REQUIREMENTS
* Use audio output: RANGE; lOOmV—1.2V, 600 ohm—lOK ohm.
NOTE:
Due to line induction, TALKBACK paging noise control and volume adjustments become more difficult
as the line distance increases. Short wiring distances between the amplifier/PA-2 and the paging speakers
provide the best talkback paging and the best control. To assure the best possible talkback paging
system, we recommend a talkback speaker line consisting of shielded 2-conductor cable.