3-860-341-12 (1)
WRT-805A
UHF
Synthesized Transmitter
Operating Instructions page 2
Manual de instrucciones página 17
Mode d'emploi page 32
EN
E
F
© 1997 by Sony Corporation
[U68]
2
Owner's Record
The model and serial numbers are located at the rear of the
unit. Record the serial number in the space provided below.
Refer to these numbers whenever you call upon your Sony
dealer regarding this product.
Model No. WRT-805A
Serial No.
Notice for customers in the U.S.A.
Use of Sony wireless devices is regulated by the Federal
Communications Commission as described in Part 74
subpart H of the FCC regulations and users authorized
thereby are required to obtain an appropriate licence.
You are cautioned that any changes or modifications not
expressly approved in this manual could void your authority
to operate this equipment.
Notice for customers in Canada:
Use of Sony wireless devices is regulated by the Industry
Canada as described in their Radio Standard Specification
RSS-123.
A licence is normally required. The local district office of
Industry Canada should therefore be contacted. When the
operation of the device is within the broadcast band, the
licence is issued on no-interference, no-protection basis with
respect to broadcast signals.
English
3
Precautions
· The unit is designed for use in ambient temperature range
of 0°C to 50°C (32°F to 122°F).
· Do not place the unit on or near heat sources, such as
lighting equipment, power amplifiers, or in a place subject
to direct sunlight or excessive moisture. In such places,
the external finish or internal parts of the unit may be
damaged.
Table of Contents
· If the unit is used in a very humid or dusty place or in a
place subject to an active gas, clean its surface as well as
the connectors with a dry, soft cloth soon after use.
Lengthy use of the unit in such places or not cleaning it
after its use in such places may shorten its life.
· When cleaning the unit, never use organic solvents such
as thinner or benzine, which will damage the finish of the
unit.
· The unit has been factory adjusted precisely. Do not
tamper with its internal parts or attempt to repair it.
Precautions ......................................................................... 3
Introduction ....................................................................... 4
Features .......................................................................... 4
Channels and Carrier Frequencies .................................. 6
Parts Identification ............................................................ 7
Power Supply ..................................................................... 9
Connections ...................................................................... 11
Notes on Microphone System Operation ....................... 12
Settings .............................................................................. 12
Initiating Setting Mode ................................................ 12
Changing the Channel Selection .................................. 13
Changing the Input Attenuation Setting ...................... 14
Resetting the Accumulated Time Indication ............... 15
Error Messages ................................................................ 15
Specifications .................................................................... 16
EN
English
4
Introduction
The WRT-805A is a transmitter to be used in combination
with the WRR-800A/801A UHF Synthesized Diversity
Tuner for an 800 MHz band UHF synthesized wireless
microphone system for broadcast or movie production
purpose.
The WRT-805A can also be used in conventional Sony
Wireless Microphone System composed of the WRT-810A/
820A UHF Synthesized Transmitter, the WRR-810A/820A/
840A/850A UHF Synthesized Diversity Tuner, etc.
The microphone/transmitter and tuners of the wireless
microphone system are classified by frequency band.
A 12 MHz frequency band (or two consecutive-numbered
TV channels, such as 68 and 69 of the WRT-805A) is
assigned to each microphone/transmitter and tuner model.
In building up a UHF wireless microphone system, be sure
to combine a microphone/transmitter and a tuner having the
same TV channel number.
Features
Easy selection of 94 channels
The unit can operate on any one of 94 carrier frequencies
selected by a simple button operation.
Compact and lightweight
Innovative high-density mounting technology has enabled
the creation of this compact and lightweight transmitter,
which lets you move anywhere for Electronic News
Gathering (ENG) and Electronic Field Production (EFP).
The curved design of the moulded case allows a comfortable
fit to your waist.
Battery status information
This transmitter has capability of transmitting "Battery
status information" to the WRR-800A/801A/850A to give
advance warning of battery depletion.
The information is sent to the WRR-800A/801A/850A in
approx. 1 hour advance to battery exhaust so that they can
safely replace battery of the transmitter.
When the WRR-800A/801A/850A receives the information,
the LED and the LCD on the panel start flashing.
Operation powered by easily available battery
The built-in high-efficiency DC-DC converter allows stable
operation, for about 6 hours continuously, with just a single
LR6 (size AA) alkaline battery.
5
LCD for coordinated operation control
The LCD shows the current channel number, the residual
battery power, input attenuation setting, AF input level and
RF output.
An accumulated operation time indication is also provided
for simple control of the time of battery use (in 1-minute
increments).
Saved channel and input attenuation settings
The unit stores the channel and the input attenuation setting
when it is turned off. The saved settings are retained even if
the battery is removed. Therefore, when using the unit next
time, you need not make the same settings again.
Highly reliable electronic attenuator
The built-in input level attenuator is adjustable in a range of
0 to 21 dB in 3-dB steps. It reduces signal distortion when
an excessively strong audio signal is inputted.
RF carrier with tone signal
The unit transmits the RF carrier accompanied by a tone
signal, enabling the tuner with a tone squelch circuit to take
out only the target audio signal received.
Wide dynamic range and low noise
The compander (compressor/expander) system enables
transmission over a wide dynamic range with minimum
noise.
Audio input connector (3.5-mm dia.) with locking
mechanism
The screw-type locking mechanism ensures reliable
connection.
Compact helical antenna