Audio Technica ATW-1951, ATW-1952 Installation And Operation Manual
1900 Series Professional
UHF Wireless Systems
ATW-1951
UniPak™Transmitter System
ATW-1952
Handheld Dynamic Microphone System
Installation and Operation
Individuals with implanted cardiac pacemakers or
AICD devices: Please see notice on back cover.
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 also be at least
3 ft. away from the receiver, as shown in Figure A.
Keep antennas away from noise sources such as 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 (220 mV) and unbalanced (350 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
Attach the antennas to the antenna input jacks. The antennas
are normally positioned in the shape of a “V” (45° from
vertical) for best reception (Fig. A).
The optional accessory ATW-RA1 rack-mount antenna kit brings
antenna inputs to the front of the receiver.
Power Connections
Connect the included AD1205A AC adapter to the DC power
input on the back of the receiver. Then plug the adapter into
a standard 120 volt 60 Hz AC power outlet.
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.
This professional wireless system includes a receiver and
either a body-pack or a handheld transmitter on a specific
crystal- controlled 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 made to be mounted in a standard 19" rack (1U).
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. Both the handheld and UniPak transmitters
use internal 9-volt batteries and have Off/Standby/On switches,
battery condition indicators, and battery-save switches.
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).
Operating frequency information will be found on page 7.
Professional UHF Wireless Systems
Installation and Operation
Receiver Installation
Introduction
Fig. A Receiver Location
2
CAUTION! Electrical shock can result from removal of
the receiver cover. Refer servicing to qualified service
personnel. No user-serviceable parts inside. Do not
expose to rain or moisture.
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.
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.
UHF DIVERSITY RECEIVER
MIN MAX
AF PEAK
AF LEVEL
SQ. ADJ.
TUNER A TUNER BPOWER
OFFON
Front Panel Controls and Functions (Fig. B)
1. POWER SWITCH: Press switch on, and the “Power”
indicator will light.
2. POWER INDICATOR.
3. AF PEAK INDICATOR: Indicates when maximum transmitter
modulation without distortion has been reached.
4. TUNER OPERATION INDICATORS: Indicate which tuner
has the better reception and is in operation.
5. SQUELCH CONTROL: Adjusts level of noise-muting circuit
(preset at factory but can be adjusted as circumstances
warrant).
6. AF LEVEL CONTROL: Adjusts the level at both audio
output jacks. Does not affect AF Peak indicator.
7. MOUNTING ADAPTERS: For mounting the receiver in any
standard 19" rack. Attach to receiver with screws supplied.
Rear Panel Controls and Functions (Fig. C)
8. TUNER “B” ANTENNA JACK: Antenna connector for
tuner “B.” Attach the antenna directly, or extend it with
an antenna cable.
9. GROUND LIFT SWITCH: Disconnects the ground pin of
the balanced output (10) 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.
10. BALANCED AUDIO OUTPUT JACK: XLRM-type connector.
A standard 2-conductor shielded cable can be used to
connect the receiver output to a balanced aux-level input
on a mixer.
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. TUNER “A” ANTENNA JACK: Antenna connector for
tuner “A.” Attach the antenna directly, or extend it with
an antenna cable.
13. DC POWER INPUT: For the provided AD1205A AC adapter,
or other 12-18V DC source. (Receiver requires 150 mA.)
Receiver Controls and Functions
Fig. B Receiver Front Panel
Fig. C Receiver Rear Panel
AF OUT
BALANCED
AF OUT
UNBALANCED
DC IN 12V~18V
150 mA
GROUND LIFT
GROUND
ANT. B ANT. A
3
2
1
8 11
13
9
12
3 44 5 6 77
10
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