Audio Technica ATW-1235, ATW-1237, ATW-1236 Installation And Operation Manual
1200 Series Professional
VHF Wireless Systems
ATW-1235
UniPak™Transmitter System
ATW-1236
Handheld Dynamic Microphone System
ATW-1237
Handheld Condenser Microphone System
Installation and Operation
2
Receiver Installation
Location
For best operation the receiver should be at least 3 ft. above
the ground and at least 3 ft. away from a wall or metal surface
to minimize reflections. The
transmitter should be at
least 3 ft. from the receiver,
as shown in Figure A.
Keep antennas away from
noise sources such as digital
equipment, motors,
automobiles and neon
lights, as well as large
metal objects.
Output Connections
There are two audio outputs on the back of the receiver:
balanced (31.6 mV) and unbalanced (100 mV) . Use shielded
audio cable for the connection between the receiver and the
mixer. If the input of the mixer is a
1
⁄4" jack, connect a cable
from the
1
⁄4" unbalanced audio output on the back of the
receiver to the mixer. If the input of the mixer is an XLR-type
input, connect a cable from the balanced XLR-type audio
output on the back of the receiver to the mixer.
The two isolated audio outputs permit simultaneous feeds
to both unbalanced and balanced inputs. For example, both
a guitar amp and a mixer can be driven by the receiver.
Antennas
Assemble the two whip antennas
to the special connectors provided.
Screw the whips into the threaded
side holes at the rear of the
connector (Fig. B).
Install the included yellow vinyl
caps over the antenna tips to
increase their visibility when the
antenna location may permit
contact with people or animals.
(Cont. on pg. 4)
Fig. B
Antenna Assembly
Fig. A
Professional VHF Wireless Systems
Installation and Operation
CAUTION! The circuits inside the receiver and transmitter have
been precisely adjusted for optimum performance and
compliance with federal regulations. Do not attempt to open the
receiver or transmitter. To do so will void the warranty, and may
cause improper operation.
Individuals with implanted cardiac pacemakers or AICD
devices: Please see notice on back cover.
This device complies with part 15 of the FCC Rules. Operation is
subject to the condition that this device does not cause harmful
interference.
This device complies with INDUSTRY CANADA R.S.S. 210, en
conformité avec IC: RSS-210/CNR210. Operation is subject to
the following conditions: 1) This device may not cause harmful
interference and 2) this device must accept any interference
received, including interference which may cause undesired
operation.
Introduction
Thank you for choosing an Audio-Technica professional
wireless system. You have joined thousands of other satisfied
customers who have chosen our products because of their
quality, performance and reliability. This Audio-Technica
wireless microphone system is the successful result of years
of design and manufacturing experience.
Each professional wireless system includes a receiver and
either a body-pack or handheld transmitter on specific crystalcontrolled frequency.
The receiver features true diversity reception. Two antennas
feed two completely independent RF sections on the same
frequency; automatic logic circuitry continuously compares
and selects the superior received signal, providing better
sound quality and reducing the possibility of interference and
dropouts. The receiver is half-width for a standard 19" (1U)
rack mount. Two receivers (on different frequencies) can be
mounted side by side, using an AT8628 joining plate kit.
The versatile UniPak
™
body-pack transmitter has both low- and
high-impedance inputs plus a bias connection, for use with
dynamic and electret condenser microphones, as well as Hi-Z
instrument pickups. The UniPak and handheld transmitters use
internal 9-volt batteries and have Off/Standby/On switches and
battery condition indicators.
Please note that in multiple-system applications there must
be a transmitter-receiver combination on a
separate
frequency for each input desired (only one transmitter for each
receiver). Because the wireless frequencies are in or near VHF
TV frequencies, only certain wireless frequencies are useable
in a particular geographic area. Also, only certain of the available operating frequencies may be used together. (Frequency
selection information will be found on page 7.)
To prevent electric shock, do not remove the
cover. There are no user-serviceable parts
inside. Internal adjustments are for qualified
professionals only. Refer all servicing to
qualified service personnel.
Pour prévenir un choc électrique, ne pas ouvrir
le couvercle. Il n’y aucune pièces de rechanges
à l’intérieur. Tout ajustement interne doit être
fait par une personne qualifié seulement.
Référez tout réparation au personnel qualifié.
AVIS
RISQUE DE CHOC ÉLECTRIQUE
NE PAS OUVRIR
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
Warning: To prevent fire or shock hazard, do
not expose this appliance to rain or moisture.
Attention: Pour prévenir feu ou choc
électrique, ne pas exposé l’appareil à la pluie
ou à l’humidité.
ANT. A
Rear Panel Controls and Functions (Fig. D)
7 TUNER “B” ANTENNA JACK: Antenna connector for
tuner “B.” Attach the antenna directly, or extend it
with an antenna cable.
8 SQUELCH CONTROL: Adjusts level of noise-muting
circuit (preset at factory but can be adjusted as
circumstances warrant).
9 BALANCED AUDIO OUTPUT JACK: XLRM-type connec-
tor. A standard 2-conductor shielded cable can be used
to connect the receiver output to a balanced microphone
level input on a mixer.
10 GROUND LIFT SWITCH: Disconnects the ground pin of
the balanced output (9) from ground. Normally, the
switch should be to the left (ground connected). If hum
caused by a ground loop occurs, slide switch to the right.
11 UNBALANCED AUDIO OUTPUT JACK:
1
⁄4" phone jack.
Can be connected to an unbalanced aux-level input of a
mixer or tape recorder.
12 DC POWER INPUT: For an external 12-18V DC source
(requires 350 mA).
13 AC POWER: Power cord for 120V AC power input.
14 TUNER “A” ANTENNA JACK: Antenna connector for
tuner “A.” Attach the antenna directly, or extend it
with an antenna cable.
3
Front Panel Controls and Functions (Fig. C)
1 POWER SWITCH/INDICATOR: Press switch on, and
the “power” indicator will light.
2 RF SIGNAL LEVEL INDICATOR: Indicates the strength
of the RF signal received from the transmitter. The
LEDs will light up from left to right.
3 AF LEVEL INDICATOR: Indicates the audio modulation
level of the received signal. (Not affected by the
setting of the AF Level control.)
4 TUNER OPERATION INDICATOR: Indicates which
tuner has the better reception and is in operation.
5 AF LEVEL CONTROL: Adjusts the level at both audio
output jacks.
6 MOUNTING ADAPTERS: For mounting the receiver in
any standard 19" rack. Attach to receiver with screws
supplied. (Use optional AT8628 joining plate kit to
mount two receivers side-by-side.)
Receiver Controls And Functions
Fig. C Receiver Front Panel
Fig. D Receiver Rear Panel
5431 6
131211
97
14
6 2
8
10
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