Aiphone LAW-1 - Manual (Page 2)

SPECIFICATIONS
* Power source:
* Current consumption:
Amplifier output:
* Calling:
Wiring:
DC 12 volt. Use PS-12A (or PS-12C in North America) power supply.
lA maximum during talking per system.
800 mW maximum.
Push button station selection. Occupied lamp illuminates if the system is in use.
7 twisted pairs are required regardless of the number of installed stations. Each pair must
be twisted.
FEATURES
The central amplifier uses advanced integrated circuits providing excellent fidelity and trouble-free operation.
^ Automatic reset ensures that a station left on will not occupy the system (a warning tone sounds before the system
automatically resets).
' A local privacy button and incoming call tone prevent monitoring.
' Warning tone to both parties when called station is in privacy.
‘ Single channel amplifier positively jocks out a third party.
' Hands-free reply at called station.
' Binary computor circuit permits 20 stations to be connected using only 7-pair cable.
'■ Tone and communication volume controls are located on the central amplifier.
' Designed for desk or wall mounting (desk only with handset).
■ Field installed handset provides privacy at calling or receiving stations.
■ An extention talkback speaker may be connected to a LAH-20 station with LAN-1 adaptor.
ÌQUIPMENT AVAILABLE FOR USE WITH YOUR LAH CENTRAL AMPLIFIER SYSTEM
LAH-20: 20 call master station.
LAW-1 : Central amplifier.
LAR-1: Optional handset. Includes press-
to-taik switch.
LAN-1: Extention talkback speaker adap­
tor. Connects LAH-20 master station to
a paging horn or speaker.
PS-12C: CSA & UNDERWRITERS’ LABO­
RATORIES, INC.® Listed power supply
(available only in N. America).
PS-12A: Power supply (not available in
North America).
MSTALLATION
Do not attempt to install your intercom system until you have read and thoroughly understood the installation
occdure. Aiphone's warranty is void if system is installed in a manner other than described in this manual.
IRING
Lay out your system in advance and determine a location of each station. Please refer to the chart below to select
oper size wire for your installation. 7 twisted pairs of wire are required regardless of the number of installed stations.
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I
AWG WIRE SIZE 24 AWG 22 AWG 20 AWG 18 AWG
COMMUNICATION DISTANCE FROM
EACH STATION TO AMPLIFIER
300' 500' 760' 1200'
DIAMETER OF WIRE 0.5 mm 0.65 mm 0.8 mm 1.0 mm
COMMUNICATION DISTANCE FROM
each station to AMPLIFIER
90 m 150 m 230 m 360 m
Total iengtii of all communication wire installed per system should not exceed 2km or 1.25 mile.
Refer to the wiring diagram and write your color code in a space provided. Begin with the central amplifier and wire
first two stations, testing ¡item after installation. Unplug power supply while making connections. Refer to the table on
bottom of each station to assign that station’s number.
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