Aiphone LAF-20 User Manual
Page 6
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The diagram below illustrates a typical single master system with an NP-B Call-in button, AH-
108 Horn Speaker, and an LT-1 Matching Transformer installed. In operation, the horn speaker will
function just like a standard substation.
WIRING DIAGRAM #2
LAF-20
NOTE: If your system consists of just I master and several
subs, only 2 wires per sub to the master are required.
Leave the (E) and ( —) terminals on all subs shorted
together. Also, make a jumper and short the (E) and
( —) terminals on the master station terminal box as
shown.
L+’ V + ’<'1
OPERATION
MASTER STATION
★ Illuminated Occupied light indicates another master is using the system. Make your call once the
light has gone out.
★ Placing a call;
1) Depress the selector button for the desired
station.
2) To call by tone, momentarily press both PRI
VACY and TALK buttons. To call by voice,
depress the TALK button and speak.
3) Depress the TALK button to speak, release
to listen. If using LAR-2 handset, use the
TALK switch in the handset to control
conversation.
4) Upon completing conversation, press the
OFF button and release the depressed selec
tor button(s) by pressing any other selector
button half way down.
Call by voice
j
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