Aiphone T3130BGM Operating Instructions Manual page 15

®
PROFESSIONAL AUDIO & SOUND
MOH CONNECTIONS
CAUTION; TO REDUCE THE RISK OF FIRE OR SHOCK DO
NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. DO
NOT REMOVE COVER. THERE ARE NO USER
SERVICEABLE PARTS INSIDE. REFER SERVICING TO
QUALIFIED SERVICE PERSONNEL.
117V 60 Hz
500 W MAX.
UNSWITCHED
LINE FUSE
1.6A 250 V
3115 MOH 00
Fig. 15 - Rear Panel MOH Diagram
MUSIC ON HOLD AMPLIFIER
MOH AMPLIFIER
The Integrated Amplifier provides an independent 600 ohm, 1 Volt
Output, Transformer Balanced MUSIC-ON-HOLD Amplifier . The Input
Source of the MOH Amplifier can be selected from either the AUX or
the PROGRAM Input.
MOH - 600 OHM SYSTEM
Most Phone systems operate on a 600 ohm Input Impedance, if the
Impedance required is 600 ohm connect the Amplifier to the Phone
System MOH by using the diagram above.
MOH - 8 OHM, 1 WATT SYSTEM
Some older Key Phone systems require a 1 watt Power Output having
an Output Impedance of 8 ohm to drive the Music on Hold feature. If
the Impedance required is 8 ohm connect the Phone system MOH to
the 8 ohm, 1 Watt MOH Output of the Amplifier. See Diagram above.
CABLE
Use a cable consisting of a twisted pair of at least AWG 18. Use care
in extending the cable and avoid routing near power lines, fluorescent
lights and other systems that may generate a disturbing electric field.
SOURCE SELECTOR
Select the Input Source desired by following the instructions at right.
LEVEL CONTROL
After the wiring is completed adjust the MOH Amplifier Level Control on
the rear panel to the preferred output level.
T3115/3130/3160BGM
INTEGRATED AMPLIFIERS
INSTALLATION AND WIRING
CAUTION:
FIER ALL INPUT CONNECTIONS MUST BE MADE WITH THE AMPLIFIER OFF.
600 ohm MOH System
MOH
Input
600
Ohm
Telephone
Telephone System
KSU
ATTENTION: POUR REDUIRLES RISQUES D© INCENDIE
OU DE CHOC ELECTRIQUE, NE PAS EXPOSER A LA
PLUIE OU L©HUMIDITE, NE PAS ENLEVER LE
COUVERCLE. AUCUN REGLAGE A L©INTERIEUR.
POUR REPARATION CONSULTERUNE PERSONNE
QUALIFIEE
T3115BGM
A
MPLIFIER
POWER RATING 15 W RMS
117V 60 HZ
SUPPLY VOLTAGE
570 VA
POWER CONSUMPTION
CAUTION: TO REDUCE THE RISK OF
FIRE, REPLACE ONLY WITH
SAMETYPE OF FUSE.
ATTENTION: AFIN DE
REDUIR LE RISQUE
GROUND
D©INCENDIE, REMPLACER
SEUL PAR UN FUSIBLE
DE MEME TYPE.
CLASS 2 WIRING ACCEPTABLE
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
TO PREVENT POSSIBLE DAMAGE TO SPEAKERS OR THE AMPLI-
PROG
MOH SOURCE SELECTOR
AWG 18 TWISTED PAIR
COM 8 25V 70V
UNMUTE
SER. NO.
MOH SOURCE SELECTOR
The Source for the MOH Amplifier can be selected between
the AUX and the PROGRAM Input by setting the Jumper pro-
vided for this purpose. The Amplifier is shipped from the
Factory with the Jumper set for the AUX Input. To change the
setting do the following:
ACCESS TO THE MOH INPUT SOURCE SELECTOR
1) Remove Power Cord from AC Outlet.
2) Remove the four screws on each side of the Amplifier
securing the Top Cover to the Chassis.
3) Lift Cover and carefully slide Cover out towards the rear.
4) Locate the Printed Board No. 3130-3 attached to the rear
panel and below the AUX Input Jacks.
5) Set Jumper as required.
MOH ISSUES - The MOH Amplifier is not affected by the
Paging, Muting Functions and AUX/PGM Level Controls.
MOH SOURCE JUMPER JP5= AUX
3115 MOH JP5
Fig. 15B - MOH Input Source Jumper JP 5
AUX
INTERNAL MOH
SOURCE JUMPER
MOH OTPUT LEVEL CONTROL
AUX
47K ohm 200 Mv
IN PARALLEL
MOH OUTPUT
L
600 ohm MOH OUTPUT
8 OHM
1 Volt 1 WATT LEVEL
R
AUX
ATTENUATOR
600 OHM
10K OHM 250 OHM
1 MV 100 MV
1 V
PROGRAM MIC TEL
G MUTE G COM HOT G COM HOT G COM
BALANCED BALANCED BALANCED
MOH AMPLIFIER SOURCE SELECTOR
MOH
PROG
AUX
TEL OUTPUT
LEVEL
HOT
To change the
Selector position
lift the Mini Shorting
Plug out of the
socket pins and
re-position as
desired. Make sure
the Mini Plug is
lined up with the
socket pins.
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