
1-2
WRR-855B
1
(GB)
Precautions
English
Table of Contents
On operation
• The tuner unit must be used within the temperature range
of 0
°
C to 50
°
C (32
°
F to 122
°
F). Avoid using for an
extended period of time in extremely high temperature, or
the place subject to direct sunlight, especially outdoors,
because the finish of the case might be damaged.
Never install the tuner on or near heat sources, such as
lighting equipment, power amplifiers.
• The tuner is designed to be portable and is built to resist
humidity and dust. However, try to avoid using in very
humid or dusty places, because such use may shorten the
life of the tuner unit.
• To avoid degradation of the signal-to-noise ratio, do not
use the tuner in noisy places or in locations subject to
vibration, for example:
–near electric equipment such as motors, transformers or
dimmers
–near air conditioning equipment or places subject to direct
air flow from an air conditioner
–near a public address loudspeaker
–in a location where adjacent equipment might knock
against the tuner.
• The switching of lights may produce electrical interference
over the entire frequency range.
Position the tuner and the wireless microphone in a place
where such interference is at minimum.
• The unit has been factory adjusted precisely. Do not
tamper with its internal parts or attempt to repair it.
Precautions ......................................................................... 1
Overview ............................................................................. 2
Features .......................................................................... 2
Parts Identification ............................................................ 4
WRR-855A/855B .......................................................... 5
BTA-801 Portable Tuner Mount
Adapter (Optional) .................................................... 6
Preparations ....................................................................... 7
Mounting to a Portable Tuner Mount Adapter .............. 7
Connecting the Power Cable .......................................... 8
Attaching the Antennas .................................................. 8
Settings ................................................................................ 9
Channel Selection .......................................................... 9
Setting and Releasing
the T (Tone Squelch) OFF Mode ............................ 12
Attaching and Connecting to a Betacam ....................... 13
Messages on the Display .................................................. 15
Specifications .................................................................... 15
2
(GB)
• When looking into the upper-panel displays, be careful to
keep a sufficient distance between your eyes and the tuner
unit.
On cleaning
Clean the tuner unit with a dry, soft cloth. Never use thinner
or benzine, since these will damage the finish.
Overview
The WRR-855A/855B UHF Synthesized Tuner Unit in use
with an optional Portable Tuner Mount Adapter, such as the
BTA-801, provides a highly reliable portable diversity tuner
for the Sony UHF wireless microphone system, which uses
the frequency bands allocated for UHF TV broadcasting.
This tuner enables the application of multiple channels over
unused television channels through the use of the built-in
Sony original channel plan.
Features
Wide Operating Frequency ranges
The WRR-855A operates over a 14 MHz frequency band
within the range of 792 MHz to 806 MHz (model available
in Australia) , while the WRR-855B operates over a 24 MHz
frequency band between 470 MHz to 806 MHz (model
available in U.S.A.), or 470 MHz to 862 MHz (model
available in Europe).
WRR-855A
Model available in Australia:
792 to 806 MHz, TV channels 66 to 67
WRR-855B
Model available in USA:
470 to 806 MHz, TV channels 14 to 69
(14 frequency band, divided into 24 MHz range. All 14
frequency bands may not be available in some areas.)
Model available in Europe:
470 to 862 MHz, TV channels 21 to 69
(17 frequency band, divided into 24 MHz range. All 17
frequency bands may not be available in some areas.)
Precautions
S
3
(GB)
Weatherproof structure
By properly mounting the WRR-855A/855B to the optional
BTA-801 Portable Tuner Mount Adapter and attaching the
two supplied antennas, a weatherproof structure is obtained.
Muting ON/OFF function
You can activate or deactivate the muting function to suit
your needs.
Tone-squelch circuit for noise elimination
The unit uses a built-in squelch circuit to selectively receive
the desired RF carrier accompanied by the tone signal from
the transmitter.
Compander system
A compander (compressor/expander) system enables
stabilized wireless transmission over a wide dynamic range.
Preprogrammed wireless channel plans for simultaneous
multi channel operation
The WRR-855A/855B has many preprogrammed channel
groups, meaning combination of wireless channels to permit
simultaneous operation of multiple channels without
intermodulation.
For the channel plans available on your unit, see “Wireless
Microphone System Frequency List” supplied with this
manual.
Space diversity reception system
The WRR-855A/855B provides stable signal reception with
only a minute amount of dropout.
Versatile display
A variety of information is obtained at a glance on the upper
panel, such as the reception channel with the liquid-crystal
display, and RF input level and audio level with the
respective LEDs.
Compact and lightweight
Innovative, high-density mounting technology has enabled
the creation of this compact, lightweight tuner. Using the
optional BTA-801 Portable Tuner Mount Adapter in
combination, the WRR-855A/855B can be easily attached to
a Betacam-series Camcorder.
4
(GB)
Parts Identification
UH
F S
YNT
HES
IZE
D
TUN
ER U
NIT
WR
R-8
55
ON
OFF
MUTING
POWER
CH
GP
–
+
GP
/CH
RF
AF
S
5
Accessory connector
4
Mounting screws (4)
1
ANT connectors
2
POWER switch
3
MUTING switch
8
Liquid-crystal display
6
GP button
qa
AF indicator
qs
RF indicator
7
CH button
9
+ button
0
– button
WRR-855A/855B
BTA-801 Portable Tuner Mount Adapter (optional)
qd
DC 12V IN connector
qf
Betacam attachment
knob
qg
OUTPUT connector
Содержание WRR-855B
Страница 1: ...UHF SYNTHESIZED TUNER UNIT WRR 855B SERVICE MANUAL 1st Edition Revised 2 ...
Страница 4: ...2 WRR 855B 8 Schematic Diagrams TUN 8 8 1 CPU 342 8 8 DP 236 8 10 SW 814 8 10 ...
Страница 10: ...1 6 WRR 855B Sony Corporation Printed in Japan ...
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Страница 67: ...7 1 WRR 855B 7 1 Section 7 Board Layouts ...
Страница 68: ...7 2 WRR 855B 7 2 TUN 8 Suffix 11 TUN 8 Suffix 11 TUN 8 A SIDE SUFFIX 11 TUN 8 B SIDE SUFFIX 11 ...
Страница 69: ...7 3 WRR 855B 7 3 TUN 8 Suffix 22 TUN 8 Suffix 22 TUN 8 A SIDE SUFFIX 22 TUN 8 B SIDE SUFFIX 22 ...
Страница 70: ...7 4 WRR 855B 7 4 CPU 342 Suffix 11 CPU 342 Suffix 11 CPU 342 A SIDE SUFFIX 11 CPU 342 B SIDE SUFFIX 11 ...
Страница 71: ...7 5 WRR 855B 7 5 CPU 342 Suffix 21 CPU 342 Suffix 21 CPU 342 A SIDE SUFFIX 21 CPU 342 B SIDE SUFFIX 21 ...
Страница 83: ......
Страница 84: ...Printed in Japan Sony Corporation 2006 6 16 2001 WRR 855B U CE E 9 976 898 03 ...