Audio-Technica ATW-R1820 - Manual

1800 series

wireless systems (dual-channel)

Dual-channel Frequency-agile UHF Camera-mount Receiver

ATW-R1820

Features

• Two completely independent receiver channels in a single
small unit
• Built-in antenna splitter allows single pair of antennas to support
both receivers
• True Diversity operation for dropout protection
and silent switching
• 996 selectable frequencies in 25 kHz steps in each of two
frequency bands
• Auto-scan easily selects open channels for each receiver
• Tone Lock

™

squelch eliminates interference when the transmitters

are off
• User-friendly operation, with clear natural sound quality
• Battery life gauge on the receiver’s LCD display
• Soft-touch controls for controlling transmitters and receivers
• Dual, balanced, adjustable outputs for connection to any mic
level inputs
• Mix function to provide a mic level output of the two receivers in
a single balanced output
• Selectable monitor output on the receiver with level control
• Receiver operates on AA batteries or external 12V DC supply
• Diversity antenna selection and AF peak LED indicators
• Compact receiver design ideal for on-camera operation

Description

The 1800 Series dual-channel, frequency-agile true diversity UHF wireless

receiver provides a new standard for audio and RF performance with

user-friendly features and flawless operation for camera-mount and special

remote applications. The systems provide the audio quality and reliability

necessary for the most demanding requirements of today’s video and

audio systems, with two independent receivers in one small housing.

The ATW-R1820 dual-channel receiver incorporates two completely

independent diversity receiver sections along with an antenna distribution

system and audio mixer in a single compact package. Each receiver

incorporates automatic frequency scanning which eliminates the need for

searching for clear channels and automatically selects the most appropriate

frequency for each channel’s operation. The flexibility in programming

both receivers and transmitters allows the user to customize this wireless

system to the needs of virtually every application. The internal antenna

distribution system allows for a single pair of receiving antennas to feed

both receiver sections. True Diversity reception with automatic logic

circuitry within each receiver selects the strongest RF signal. The

top-mount antennas are removable allowing for different types of

antennas and antenna accessories to be used. All components have an

easy to read LCD display with back lighting for easy function monitoring.

An advanced digital Tone Lock

™

squelch system provides enhanced

rejection of interference on each of the two receivers. Multi-function LED

indicators are provided for diversity, power and peak signal indication. The

receiver’s compact design and included pouch with stainless steel clip

allow for easy attachment to cameras, sound mixer bags or the user’s

belt. Designed to operate on six standard AA alkaline batteries or external

12V DC, the dual receiver’s power switch allows for one receiver section

to be switched “off” if not being used to increase battery life. Dual

balanced outputs with built-in mixer and output select controls allow the

audio from each receiver to be routed to independent outputs or mixed

together into a single output for enhanced flexibility in the field. Full

headphone confidence monitoring with level control and output selector

enables the operator to monitor each receiver’s audio. All audio output

connections are standard mini-XLRM type connections with TA3F to

XLRM-type adapter cables included with the system.

Additionally, the frequency configurations used in the 1800 Series

components allows them to be interchangeable with the Audio-Technica

3000 Series components.

Architect’s and Engineer’s Specifications

The frequency-agile FM dual-channel wireless receiver shall be part of

a wireless microphone system consisting of a dual receiver and the

appropriate transmitters. Operating in the UHF bands of either 541.500 –

566.375 MHz or 655.500 – 680.375 MHz the system shall be capable of

operating on any of 996 PLL-synthesized frequencies per band (adjustable in 25

kHz steps).

The all-metal receiver shall be designed for camera mount or portable

operation and shall consist of two complete wireless receivers along with

an integral antenna distribution system allowing the two receivers to

share a single set of antennas. Each of the two receivers shall utilize True

Diversity with automatic logic switching to choose the strongest RF

signal appearing at either antenna. Each receiver section shall provide an

automatic scanning function to select appropriate local usable frequen-

cies for proper wireless system operation. All configuration functions of

the receiver shall be controlled by soft-touch controls on the receiver top.

A selector switch with lockout/hold function shall be provided for

selecting which receiver section is controlled by the soft-touch controls.

The receiver shall incorporate a four-position power switch allowing for

direct selection of one or two receiver sections on internal batteries or

external power. The receiver shall have LED operator indicators on the top

panel for diversity operation (A-B) for each receiver section, power/peak

indicators for each receiver and a dual channel control LED which shows

which receiver is selected to the soft-touch controls for configuration and

setup. A backlit LCD display shall be provided on the receiver for showing

receiver battery status and selected frequency. A three-position select/

hold switch shall be provided to select which receiver appears on the

display and is controlled by the soft-touch configuration controls. The

switch shall incorporate a hold function to disable the soft-touch controls.

An associated LED shall illuminate red when the select/hold switch is in

the receiver 1 or 2 position and green when the switch is set in the hold

position. The system will be equipped with an advanced Tone Lock

™

digital identification system. The receiver design shall provide totally

silent audio output mute when the wireless transmitter is turned off or

signal is lost to ensure that only the desired wireless microphone

transmitter allows the receiver to be un-muted. The receiver shall

incorporate a built-in audio mixing and monitoring section. This mixer shall

allow for the two receiver sections to be mixed together to a single

output connector, operate as independent outputs or select one of the

receivers to appear at both audio outputs. Each receiver section shall be

provided with an independent level control. Independent audio monitor-

ing shall be provided with monitor level control and monitor select

(1-both-2). A headphone connector shall be provided on the bottom of the

receiver.

The receiver shall be able to be powered by 6 alkaline AA batteries or 12

volts DC at 500 mA. Antennas shall be located on the top of the receiver