Sony WRR-801A User manual

1997 by Sony Corporation
Operating Instructions
UHF Synthesized
DiversityTuner
3-860-930-31(2)
WRR-801A
[AU]

2
Table of Contents
Precautions
WARNING
To prevent fire or shock hazard, do not
expose the unit to rain or moisture.
To avoid electrical shock, do not open the
cabinet. Refer servicing to qualified
personnel only.
On operation
•The tuner must be used within a temperature range of
0°C to 40°C (32°F to 104°F). Avoid using the tuner
for extended periods at extremely high temperatures
or placing it in direct sunlight, especially outdoors,
because this may damage the finish of the case.
Never install the tuner on or near a heat source, such
as lighting equipment or power amplifiers.
•To avoid using in very humid or dusty places,
because such use may shorten the life of the tuner.
•To avoid degradation of the signal-to-noise ratio, do
not use the tuner in noisy places or in locations
subject to vibration, such as the following:
– near electrical equipment, such as motors,
transformers or dimmers
– near air conditioning equipment or places subject
to direct air flow from an air conditioner
– near public address loudspeakers
– where adjacent equipment might knock against the
tuner
•Switching lights on or off may produce electrical
interference over the entire frequency range. Position
the tuner and the wireless microphones so that
interference is minimized.
•The tuner is precisely adjusted at the factory and no
adjustment before use is necessary. Do not touch the
inside of the tuner or try to repair it by yourself.
On cleaning
Clean the tuner with a dry, soft cloth. Never use
thinner, benzene, alcohol or any other chemicals, since
these may damage the finish.

3
(AU)
Table of Contents
Precautions....................................................... 2
Overview ........................................................... 4
Features ............................................................. 4
System Configuration........................................ 4
Wirelss Channels Selectable .......................... 5
Wireless Channel Lists ...................................... 5
Location of Parts and Controls....................... 8
Front Panel ........................................................ 8
Dispaly .............................................................. 8
Rear Panel ......................................................... 9
Installing a WRU-801ATuner Unit ................. 10
Connections ................................................... 11
Basic Connections ........................................... 11
Connection for Multichannel Operation ......... 11
Channel Setting.............................................. 12
Automatic Search and Setting of Available
Channels..................................................... 13
Operation ........................................................ 14
Muting Functions ............................................ 14
Rack Mounting ............................................... 15
Error Messages .............................................. 15
Specifications................................................. 16

Overview
4
Space diversity reception system
The WRR-801A provides stable signal reception with
minimum dropout.
Tone squelch circuit for noise elimination
A built-in squelch circuit eliminates noise and signal
interference when the WRR-801A is in signal
reception standby mode.
Compander system
A compander (compressor/expander) system enables
stabilized wireless transmission over a wide dynamic
range.
Rack mounting
The WRR-801A can be mounted in an EIA standard
19-inch rack (1U size).
System Configuration
The tuner can be used with a Sony UHF synthesized
wireless microphone or UHF synthesized transmitter
among the models listed in the table below.
Sony 800 MHz-band system models
Overview
The WRR-801A is a reliable UHF synthesized
diversity tuner for the 800-MHz-band Sony UHF
wireless microphone system which uses the frequency
bands allocated for UHF TV broadcasting.
This tuner is designed to enable simultaneous use of
multiple channels when channels are selected
according to the Sony channel plan.
Installing six WRU-801A UHF Synthesized Tuner
Units will enable six-channel operation on the tuner.
At shipping, one tuner unit is installed in the tuner, and
additional tuner units (sold separately) can be installed
easilly.
Features
Phase Locked Loop (PLL) synthesized
system
The WRR-801A has a refined phase locked loop
(PLL) synthesizer circuit and covers two UHF TV
channels. It operates on 102 channels over a 14-MHz
frequency.
Preprogrammed wireless channel plan for
simultaneous multichannel operation
The WRR-801A has many preprogrammed, easily
settable channels for simultaneous multichannel
operation. One group allows setting of 102 channels.
The tuner also has 12 preset groups of channels, each
of which permits simultaneous operation of 5, 6, 8, 9
or 12 channels without the effects of intermodulation.
Modular multichannel reception
By installing optional WRU-801A UHF Synthesized
Tuner Units, you can receive up to six channels on one
WRR-801A unit.
Versatile display
A liquid-crystal display provides a variety of
information, including the levels of the reception
channels, RF information and transmitter battery
condition.
792.250 to
798.500
Model name
WRR-800A (66)
WRR-801A (66)
WRR-810A (66)
WRR-820A (66)
WRR-840A (66)
WRR-850A (66)
WRR-860A (66)
Tuner
WRT-800A (66)
WRT-805A (66)
WRT-810A (66)
WRT-820A (66)
WRT-830A (66)
WRT-860A (66)
WRT-867A (66)
66
67
Frequency band
Frequency
(MHz)
TV channel Transmitter or
microphone
799.250 to
805.500

5
Wirelss Channels Selectable
The tuner stores thirteen groups of selectable channels:
groups 00 (102 channels), 11 (12 channels),
12 (9 channels), 13 (9 channels), A1 (8 channels), A2
(6 channels), A3 (6 channels), L1 (6 channels), L2 (6
channels), M1 (6 channels), M2 (5 channels), H1 (8
channels) and H2 (8 channels).
Channel groups other than group 00 are designed so
that all channels of one group can be used
simultaneously within the same UHF wireless
microphone system without causing intermodulation.
It is therefore recommended that you usually use a
channel group other than group 00 unless the use of
group 00 is specifically necessary.
Each “wireless channel” is represented by a 2-digit TV
channel number and a 2-digit number, for example:
66-23.
Note
To eliminate interference or noise, please note the
following.
•Do not use two or more wireless microphones or
transmitters whose wireless channels are the same.
•If there is a TV broadcasting station nearby, to avoid
possible interference from its broadcasting, do not
use that station’s channel.
•The number of wireless microphone channels
actually usable in a multi-channel system may be
smaller than the normal capacity of that system if
there is interference from TV broadcasting or other
RF signals.
•When operating two or more UHF wireless
microphone systems using the same wireless channel
in the same group, ensure that the systems are at least
100 m (330 feet)1) apart as far as they are installed
within sight of each other.
1) The distance depends on the operating environment and
conditions.
Wireless Channel Lists
Group 00: All channel access
Use only for a one-channel system or to scan for open
channels.
..........................................................................................................................................................................................................
66-01 792.250
66-02 792.375
66-03 792.500
66-04 792.625
66-05 792.750
66-06 792.875
66-07 793.000
66-08 793.125
66-09 793.250
66-10 793.375
66-11 793.500
66-12 793.625
66-13 793.750
66-14 793.875
66-15 794.000
66-16 794.125
66-17 794.250
66-18 794.375
66-19 794.500
66-20 794.625
66-21 794.750
66-22 794.875
66-23 795.000
66-24 795.125
66-25 795.250
66-26 795.375
66-27 795.500
66-28 795.625
66-29 795.750
66-30 795.875
66-31 796.000
66-32 796.125
66-33 796.250
66-34 796.375
66-35 796.500
66-36 796.625
66-37 796.750
66-38 796.875
66-39 797.000
66-40 797.125
66-41 797.250
66-42 797.375
66-43 797.500
66-44 797.625
66-45 797.750
66-46 797.875
66-47 798.000
66-48 798.125
66-49 798.250
66-50 798.375
66-51 798.500
WL Channel Frequency (MHz) WL Channel Frequency (MHz)
67-01 799.250
67-02 799.375
67-03 799.500
67-04 799.625
67-05 799.750
67-06 799.875
67-07 800.000
67-08 800.125
67-09 800.250
67-10 800.375
67-11 800.500
67-12 800.625
67-13 800.750
67-14 800.875
67-15 801.000
67-16 801.125
67-17 801.250
67-18 801.375
67-19 801.500
67-20 801.625
67-21 801.750
67-22 801.875
67-23 802.000
67-24 802.125
67-25 802.250
67-26 802.375
67-27 802.500
67-28 802.625
67-29 802.750
67-30 802.875
67-31 803.000
67-32 803.125
67-33 803.250
67-34 803.375
67-35 803.500
67-36 803.625
67-37 803.750
67-38 803.875
67-39 804.000
67-40 804.125
67-41 804.250
67-42 804.375
67-43 804.500
67-44 804.625
67-45 804.750
67-46 804.875
67-47 805.000
67-48 805.125
67-49 805.250
67-50 805.375
67-51 805.500

Wirelss Channels Selectable
6
Group 11: 12-channel group
Use when TV channels both 66 and 67 are available.
Group 12: 9-channel group
Use when TV channel 66 is on the air.
Group 13: 9-channel group
Use when TV channel 67 is on the air.
WL Channel Frequency (MHz)
66-02 792.375
66-07 793.000
66-17 794.250
66-19 794.500
66-35 796.500
66-43 797.500
67-08 800.125
67-19 801.500
67-33 803.250
67-39 804.000
67-42 804.375
67-46 804.875
Group A1: 8-channel group
Use when both TV channels 66 and 67 are available.
Group A2: 6-channel group
Use when TV channel 66 is on the air.
Group A3: 6-channel group
Use when TV channel 67 is on the air.
WL Channel Frequency (MHz)
66-02 792.375
66-04 792.625
66-12 793.625
66-24 795.125
67-02 799.375
67-29 802.750
67-35 803.500
67-44 804.625
WL Channel Frequency (MHz)
67-06 799.875
67-15 801.000
67-21 801.750
67-32 803.125
67-46 804.875
67-50 805.375
WL Channel Frequency (MHz)
67-01 799.250
67-03 799.500
67-11 800.500
67-16 801.125
67-23 802.000
67-27 802.500
67-41 804.250
67-44 804.625
67-50 805.375
WL Channel Frequency (MHz)
66-01 792.250
66-03 792.500
66-11 793.500
66-16 794.125
66-23 795.000
66-27 795.500
66-41 797.250
66-44 797.625
66-50 798.375
WL Channel Frequency (MHz)
66-06 792.875
66-15 794.000
66-21 794.750
66-32 796.125
66-46 797.875
66-50 798.375

7
Group L1: 6-channel group
Use when TV channel 67 is on the air.
Group M1: 6-channel group
Use when TV channel 67 is on the air.
Group H1: 8-channel group
Use when TV channel 66 is on the air.
Group L2: 6-channel group
Use when TV channel 67 is on the air.
Group M2: 5-channel group
Use when TV channel 67 is on the air.
Group H2: 8-channel group
Use when TV channel 66 is on the air.
WL channel Frequency (MHz)
66-01 792.250
66-03 792.500
66-09 793.250
66-14 793.875
66-18 794.375
66-21 794.750
WL channel Frequency (MHz)
66-31 796.000
66-33 796.250
66-39 797.000
66-44 797.625
66-48 798.125
66-51 798.500
WL channel Frequency (MHz)
67-03 799.500
67-05 799.750
67-11 800.500
67-16 801.125
67-26 802.375
67-35 803.500
67-38 803.875
67-42 804.375
WL channel Frequency (MHz)
66-02 792.375
66-04 792.625
66-10 793.375
66-15 794.000
66-19 794.500
66-22 794.875
WL channel Frequency (MHz)
66-32 796.125
66-34 796.375
66-40 797.125
66-45 797.750
66-49 798.250
WL channel Frequency (MHz)
67-06 799.875
67-08 800.125
67-12 800.625
67-22 801.875
67-25 802.250
67-33 803.250
67-40 804.125
67-45 804.750

Location of Parts and Controls
8
AF BATT
GP CH
BATT
RF
AF
SET
ON
OFF
POWER
GP
CH
BATT
RF AF BATT
GP CH
12 3 45 6
1POWER switch
2Display
6Blank panels
3GP button
4SET button
5CH button
Front Panel
1POWER switch
Turns the power on and off.
2Display
Displays the status of the tuner and the group and
channel assigned to the unit.
For details, see the following section “Display”.
3GP (group) button
Press to change the group or to display frequencies.
Location of Parts and Controls
1BATT (battery) indicator
5BATT (battery) indication
Indicate the condition of the wireless microphone
transmitter batteries. The indicator and indication start
flashing about one hour before the transmitter batteries
go flat.
1BATT indicator
2RF indicator
3AF indicator
4AF indication
5BATT indication
6GP/CH indication
4SET button
Press to change the group or channel.
5CH (channel) button
Press to change the channel in a group.
6Blank panels
Remove these panels to install optional WRU-801A
UHF Synthesized Tuner Units.
Display
2RF (radio frequency) indicator
7RF (radio frequency) indications
The indicator lights and the indications (dots) appear
when the antenna reception is optimal. Depending on
the RF input level, the number of dots changes.
3AF (audio frequency) indicator
4AF (audio frequency) indication
The indicator lights and the indication appears when
the audio output level is higher than the reference
level.
6GP/CH (group/channel) indication
Shows the reception channel group and respective
channel number.
Pressing the GP button changes this indication to the
frequency indication.
7RF indications

9
Rear Panel
ANTENNA B TNNER OUTPUT(LINE LEVEL 0dBm) MIX OUTPUT
IN(DC 9V OUT) 564321
ATT
010dB
ANTENNA A AC IN
IN(DC 9V OUT)
ATT
LEVEL
010dB
LINE
0dBm
MIC
–38dBm
⁄
3AC IN connector
4MIX OUTPUT LEVEL switch
5MIX OUTPUT connector
6TUNER OUTPUT connectors
1ANTENNA A, B IN/DC 9V out connectors
2ANTENNA A, B ATT switches
1ANTENNA A, B IN/DC 9V OUT (antenna A, B
input/DC power output) connectors (BNC type)
Connect the supplied antenna or an optional AN-820A
UHF Antenna. To connect two of these units, these
connectors are connected to the ANTENNA OUT
connectors of the WD-820A UHF Antenna Divider.
When the AN-820A is connected, 9 V DC power is
supplied to the antenna’s internal booster through these
connectors.
Note
Never short-circuit these connectors.
2ANTENNA A, B ATT (attenuation) switches
Select the RF attenuation as 0 dB or 10 dB. (Normally,
set the switches to 0 dB.)
3AC IN connector
Connects to an AC power source with the supplied AC
power cord.
4MIX OUTPUT LEVEL switch
Selects the mixed output level as 0 dBm or –38 dBm.
Set this switch according to the input level of the
equipment connected to the tuner.
5MIX OUTPUT connector (ø6.3 phone balanced
(1/4inch TRS))
Supplies mixed audio signals of six tuner units. You
can connect this to the audio input connector of a
mixer, amplifier or similar equipment.
6TUNER OUTPUT (tuner sound output)
connectors (ø6.3 phone balanced (1/4inch TRS))
Each connector supplies the audio signal from the
corresponding tuner unit. You can connect this to the
audio input connector of a mixer, amplifier, or similar
equipment.

10
Up to five WRU-801A UHF Synthesized Tuner Units
can be installed.
Notes
•Be sure to power this unit off before installing the
WRU-801A.
•The buttons and display on the front panel of the
WRU-801A may be damaged if they are gripped too
strongly. Always hold the WRU-801A by the side.
•Do not touch the connectors on the rear panel of the
WRU-801A.
•Be careful of static electricity.
Installing a WRU-801A
1Power the tuner off and remove the blank panel
with a screwdriver or other tool.
2Hold the WRU-801A by the side and insert into
the slot. Push in until you hear a click.
Installing aWRU-801ATuner Unit
Removing a WRU-801A
On the bottom panel of the tuner, locate the lever
corresponding to the slot where the WRU-801A is
installed and pull the lever forward. The WRU-801A is
ejected from the slot.
1
2
Lever
Bottom Panel

11
A
B
A
B
Connections
Basic Connections
Connection for Multichannel Operation
Antenna
(supplied)
AN-820A UHF
Antenna
ANTENNA B IN ANTENNA A IN WRR-801A
TUNER
OUTPUT MIX OUTPUT
Connect output A or B
to a mixer or an
amplifier.
AC IN
Power cord
(supplied) To AC power source
or
When using 1 to 6 channels
AN-820A UHF
Antenna
WD-820A UHF
Antenna Divider
ANTENNA B IN ANTENNA A IN
WRR-801A
ANTENNA B IN ANTENNA A IN
TUNER
OUTPUT MIX OUTPUT
WRR-801A
ANTENNA B IN ANTENNA A IN
TUNER
OUTPUT MIX OUTPUT
Connect output A or
B to a mixer or an
amplifier.
When using 7 to 12 channels
Notes
•Make sure to use a pair of antennas.
•Make the antenna tips point upward.
To AC power source
To AC power source
To AC power source
Power cord
(supplied)
Power cord
(supplied)

Connections
12
Take the following precautions to prevent interference
and noise.
•Do not simultaneously use two or more microphones
and transmitters that are set to the same channel.
•When simultaneously using two or more tuners,
always set the tuners to different channels within the
same group (other than group 00).
•Separate the reception antennas and the transmitter by
more than 3 meters (9 feet 11 inches).
1Turn the POWER switch on.
The message “AS 66” appears on the display, and
then the current tuner status is displayed.
Note
Turn the POWER switch on after reducing the
volume of equipment connected to the TUNER
OUTPUT connector. Otherwise, noise will be
heard when the power is turned on.
2Press and hold down the SET button, and press the
GP button in 3 seconds to select a group.
Each time you press the GP button, the GP
indication changes as shown in the following
figure. To change the indication continuously,
press and hold down the GP button.
Channel Setting
The CH indication shows the lowest frequency
channel of the selected group. For group 00,
however, the channel selected last is displayed.
Releasing the buttons automatically cancels the
group and channel selection mode, and the
currently displayed group is selected.
3Press and hold down the SET button, and press the
CH button in 3 seconds to select a channel.
Similar to step 2, each time you press the CH
button, the CH indication changes in the order
shown in the group and reception channel list. (See
“Wireless Channel Lists” on page 6.)
If you press the CH button when the last channel
of the selected group is displayed, the first channel
of the group will be displayed.
Selecting the reception channel by frequency
Press the GP button.
This changes the GP/CH indication to a frequency
indication.
To change a frequency, press the CH button while
keeping the SET button pressed. (A higher
frequency will be displayed.)
Press the GP button again to change the frequency
indication to a GP/CH indication.
4If the desired channel or frequency is displayed,
release the SET button and CH button.
The selected channel is set.
To store the selected group and channel
Leave the indication unchanged for 5 seconds.
The group and channel set in the procedure explained
above are stored in memory.
GP CH GP CH
GP CH GP CH
GP CH GP CH
SET
ON
OFF
POWER
GP
CH
BATT
RF
AF BATT
GP CH
1
12
2,3 3

13
Automatic Search and Setting of
Available Channels
When you use the tuner in a multi-channel operation
system, you can assign available channels to all tuner
units by operating the first tuner unit only.
1Power off all wireless microphones and
transmitters.
2On the first tuner unit, select the group to be used.
3Press the SET button on the first tuner unit and
hold it down for 3 seconds.
The first tuner unit searches for available channels
in the selected group. After that, available channels
in the group are so assigned to all tuner units
automatically that two or more tuner units may not
use the same channel.
After automatic setting, you can adjust the groups
and channels of individual tuner units.
Notes
•Do not use group 00.
•If no channels are available, “NO CH” is displayed
and channel setting is aborted.
When using two tuners
When you use two tuners, proceed as follows to ensure
that the two tuners do not use the same channel
settings.
1Follow the procedure explained above to set the
group and channel of the first tuner.
2Power on the wireless microphones or transmitters
after adjusting them to the channels of each tuner
unit.
Note
If the microphones or transmitters are not powered
on, the two tuners may use the same channel twice.
3On the first tuner unit of the second tuner, set the
same group as selected on the first tuner.
4Press the SET button of the first tuner unit on the
second tuner and hold it down for 3 seconds.
Available channels in the same group (channels
not used by the first tuner) are automatically set on
the first tuner unit and the other tuner units on the
second tuner.
Note
If automatic channel setting does not function well for
the 2nd tuner (due to poor reception), set channels
manually for the 2nd tuner.

14
+
–
1 2
3
Connect the output signals to a mixer or an
amplifier (see page 11).
UHF synthesized
wireless
microphone UHF synthesized
transmitter
Operation
1Turn the POWER switch on.
Note
Turn the POWER switch on after reducing the
volume of the equipment connected to the TUNER
OUTPUT connector. Otherwise, noise will be
heard when the POWER switch is turned on.
2Set the reception channel.
For details on setting the channels on the tuner, see
“Channel Setting” on page 12.
3Turn on the wireless microphone or transmitter.
Use the wireless microphone or transmitter to
which the same channel is assigned as to the tuner.
If noise is heard
Depending on the environment where the system is
installed, outside noise or radio wave may disrupt the
transmission of certain channels.
To select a channel under this circumstance, turn off
the wireless microphone and transmitter. Then select a
channel at which the RF indicator is off. (A channel
free from noise or radio wave interference is selected.)
Set the same channel on the microphone or transmitter.
Muting Functions
This tuner has the following three muting functions,
which work in combination.
(1) Muting by RF input level
As sufficient S/N for the audio output may not be
obtained if no RF signal is received or the RF input
level is low, the audio output can be muted when the
RF input level falls below the muting level.
(2) Tone squelch
The audio output is obtained only when the tuner
receives an RF signal which includes a specified tone
signal. The audio output is muted to eliminate noise
which may be heard when the transmitter is turned on/
off or the tuner receives an interference RF signal.
(3) Noise squelch
The audio output is muted to eliminate noise which
may be heard when there is such excessive
interference RF signal that the tone squelch does not
work.

15
1Remove the feet of the tuner before mounting it on
a rack.
2Mount the tuner on the rack using screws that are
at least 12 mm (1/2inches) long and that match the
diameter of the screw holes on the rack.
Apart from the normal indications, the following error
messages may appear on the display.
Error Messages
Message Meaning Remedy
Err 01 An error has occurred in the backup
memory data. The memory data is initialized. Reset the group and channel settings.
Err 02 The PLL-synthesized circuit has a
malfunction. Contact your nearest Sony dealer.
NO TONE As no tone signal is available or a
tone signal other than 32.768 kHz is
being received, the audio signal
output is muted.
The transmitter’s tone signal is in trouble. Contact your nearest
Sony dealer. If you are using a WRT-810A wireless
microphone, a “NO TONE” message appears when you turn off
the AF switch, but this is normal.
Operation
2
1
Pin
Rack
Foot
Remove the pins inside the feet
with a small screwdriver or similar
tool.
Bottom panel
Screws
Tuner
Rack Mounting

16
........................................................................................................................................................................................
Tuner
Reception type 110KF3E
Circuit system Dual conversion superheterodyne
Reception frequencies
792.250 to 805.500 MHz
Local oscillators Crystal controlled PLL synthesizer
Selectivity 60 dB or more (at ±250 kHz
detuned)
Spurious rejection ratio
70 dB or more
Image rejection ratio
70 dB or more
Muting level 30 dB µ1)
Antenna connectors
BNC-R type (2), 50 ohms
Frequency response
100 to 15,000 Hz ±3 dB
De-emphasis 50µsec
Signal-to-noise ratio
30 dB or more at an A-weighted
RF input level of 20 dBµ
60 dB or more at an A-weighted
RF input level of 60 dBµ
(±5.0 kHz deviation at 1 kHz
modulation)
Distortion 1% or less (±40 kHz deviation at
1 kHz modulation)
Tone signal frequency
32.768 kHz
Output level 0 dBm2) (±16 kHz deviation at
1 kHz modulation)
(–20 dBm (±5 kHz deviation at
1 kHz modulation))
Mix output level
LINE 0 dBm (±16 kHz deviation at 1 kHz
modulation)
(–20 dBm (±5 kHz deviation at
1 kHz modulation))
MIC –38 dBm (±16 kHz deviation at
1 kHz modulation)
(–58 dBm (±5 kHz deviation at
1 kHz modulation))
Specifications
Output impedance 150 ohms
Output connectors ø 6.3 phone balanced (1/4inch TRS)
General
Power requirements
100~240 V AC, 50/60 Hz
Power consumption
30 W
Power supply for antenna boosters
9 V DC (max. 100 mA)
Operating temperature
0°C to 40°C (32°F to 104°F)
Storage temperature
–20°C to +55°C (–4°F to +131°F)
Dimensions 482 ×44 ×300 mm
(19 ×1 3/4×11 7/8inches) (w/h/d)
Mass Approx. 3.8 kg (134 oz)
Accessories supplied
AC power cord (1)
Antennas (2)
Operating Instructions (1)
Design and specifications are subject to change
without notice.
1) 0 dBµ=1 µV
2) 0 dBm=0.775 Vrms (600 ohms loaded)
Sony Corporation Printed in Japan