Sony WD-880A User manual

1
1996 by Sony Corporation
Operating Instructions
Before operating the unit, please read this manual
thoroughly and retain it for future reference.
3-856-875-21 (1)
WD-880A
UHF Antenna
Divider

2
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.
For the Customers in the United Kingdom
WARNING
THIS APPARATUS MUST BE EARTHED.
IMPORTANT
The wires in this mains lead are coloured in accordance with
the following code:
Green-and-yellow: Earth
Blue: Neutral
Brown: Live
As the colours of the wires in the mains lead of this
apparatus may not correspond with the coloured markings
identifying the terminals in your plug proceed as follows:
The wire which is coloured green-and-yellow must be
connected to the terminal in the plug which is marked by the
letter E or by the safety earth symbol Yor coloured green or
green-and-yellow.
The wire which is coloured blue must be connected to the
terminal which is marked with the letter N or coloured black.
The wire which is coloured brown must be connected to the
terminal which is marked with the letter L or coloured red.
VORSICHT
Um Feuergefahr und die Gefahr eines
elektrischen Schlages zu vermeiden, darf das
Gerät weder Regen noch Feuchtigkeit
ausgesetzt werden.
Um einen elektrischen Schlag zu vermeiden,
darf das Gehäuse nicht geöffnet werden.
Überlassen Sie Wartungsarbeiten stets nur
einem Fachmann.
Für Kunden in Deutschland
Dieses Produkt kann im kommerziellen und in begrenztem
Maße auch im industriellen Bereich eingesetzt werden.
Dies ist eine Einrichtung, welche die Funk-Entstörung nach
Klasse B besitzt.

3
Table of Contents
Overview.....................................................................................................4
Precautions .................................................................................................5
Location and Function of Parts................................................................6
Front Panel .............................................................................................6
Rear Panel...............................................................................................7
Connection to the WD-820A.....................................................................8
System Configuration................................................................................9
24-Channel System Plan Using Group U1 or U2...................................9
24-Channel System Diagrams ..............................................................10
Channel Plan and Freqeuncy Assignment for Groups U1 and U2......12
Rack Mounting ........................................................................................13
Removing the Mounting Brackets........................................................14
Dimensions ...........................................................................................14
Specifications............................................................................................15

4
The WD-880A is a rack-mountable UHF antenna divider which enables
simultaneous operation of up to 24 channels of the 800 MHz band wireless
microphone system.
Up to 24-channel simultaneous operation
By using the WD-880A with the Sony synthesized wireless microphone
system, up to 24 channels of simultaneous operation can be available
between TV channel 59 and 61 bands. Up to eight channels can be
operated in each TV channel band, for a total of 24 channels.
See “System Configuration” on pages 9 to 12.
Stable reception minimizing interference and distortion
Even when the unit is used exclusively for a certain TV channel band, it is
almost free from interference and distortion from other bands and achieves
stable reception.
LED indicators to show the output connection statuses
The unit is equipped with LED indicators which show you the statuses of
the outputs of the respective divided bands and connections with other
antenna dividers (WD-820A, etc.) or the tuners (WRR-820A/840A/850A,
etc.).
Selectable power supply (12V/9V/OFF) to antenna
boosters
The unit can supply power to the booster amplifiers of connected antennas.
The supply power voltage can be accordingly switched between 9V and
12V DC with a front panel switch.
The power supply for booster amplifiers can also be turned off to eliminate
interference and distortion.
1U-size EIA rack mount
The unit can be mounted in an EIA standard 19-inch rack (1U size).
Overview

5
• The unit must be used within a temperature range of 0°C to +50°C
(+32°F to +122°F). To obtain the optimum performance of the unit, use
within a range of +15°C to +35°C (+59°F to +95°F) is recommended.
Avoid using the unit for extended periods at extremely high temperatures
or placing it in direct sunlight, as this may damage the finish of the case.
Never install the unit on or near a heat source, such as lighting
equipment or power amplifiers.
• The recommended coaxial cable for connecting the antennas to the tuner
and antenna divider is a 5D-2V or higher grade (50 ohms). You can also
use a 5C-2V or higher grade (75 ohms).
Signal loss: 5D-2V 50 m (164 ft.): 12.5 dB
100 m (328 ft.): 25 dB
5C-2V 50 m (164 ft.): 13.5 dB
100 m (328 ft.): 27 dB
• If you install the unit in a rack, be sure that the rack is adequately
ventilated; inadequate rack ventilation may lead to overheating
problems.
• If the unit is used in an environment that is humid, dusty or susceptible
to harmful gas, clean the connectors and the surface after use. If used in
such an environment for an extended period, the life of the unit may be
shortened.
• Do not install the unit near electrical equipment, such as motors,
transformers, or dimmers, since this may incur magnetic induction.
• Switching lights on or off may produce electrical interference over the
wider frequency range. Position the unit and the wireless microphones so
that interference is minimized.
• To avoid degradation of the signal-to-noise ratio, do not use the unit in
noisy places or in locations subject to noise or vibration, such as the
following:
— near electrical equipment, such as motors or transformers
— 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 unit
Install the unit as far as possible from sources of interference and, if
needed, provide shock absorbent material.
• Clean the unit with a dry, soft cloth. Never use thinner, benzene, alcohol
or any other chemicals, since these may damage the finish.
Precautions

6
59
ababababab
9V OFF
ANTENNA a
DC OUT
POWER
S
UHF ANTENNA DIVIDER WD-880
12V 9V OFF
ANTENNA b
12V
60 61
CONNECTION INDICATOR
62 63 ab
64
Location and Function of Parts
5ANTENNA b DC OUT switch
4ANTENNA a DC OUT switch
1POWER indicator
2POWER switch
1POWER indicator
Lights when the unit is turned on.
2POWER switch
Turns the unit on and off.
3CONNECTION INDICATORs
Light when the output connectors of the respective
divided bands are correctly connected to the antenna
inputs of other antenna dividers (WD-820A, etc.) or
the tuners (WRR-850A/840A/820A, etc.) with coaxial
cables, these connected devices are turned on, and the
DC power is output from the antenna connectors of the
devices.
Example:
Note
This unit works only in the band between 774 MHz
and 798 MHz (TV channels 59, 60, and 61).
The indicators with the markings 62, 63 and 64 have
no functions.
4ANTENNA a DC OUT switch
Select the power supply (12V, 9V or OFF) to the UHF
antenna connected to the ANTENNA a/DC OUT (9V/
OFF/12V) connector on the rear panel.
For the switch settings depending on the destination of
power supply, see the table below.
5ANTENNA b DC OUT switch
Select the power supply (12V, 9V or OFF) to the UHF
antenna connected to the ANTENNA b/DC OUT (9V/
OFF/12V) connector on the rear panel.
For the switch settings depending on the destination of
power supply, see the table below.
Settings of the ANTENNA a/b DC OUT switches
Destination of power supply Switch setting
AN-820A 9V1)
Not used 12V
In case of interference or distortion OFF
1) When supplying power to the AN-820A, be sure to set the
switch to 9V. If it is set to 12V, the AN-820A may be damaged.
Front Panel
LED for the TV channel 59 of
the ANTENNA b side
LED for the TV channel 59 of
the ANTENNA a side
59
ab
3CONNECTION INDICATORs

7
6160 6362
⁄AC IN
ANTENNA
b
DC OUT
(9V/OFF/12V)
OUTPUT (TV-CH)
59 6160 6362
ANTENNA a
ANT IN
59 64 64
DC OUT
(9V/OFF/12V)
OUTPUT (TV-CH)
ANT IN
ANTENNA a block
1ANTENNA a / ANT IN/DC OUT (9V/OFF/12V)
connector
Through a single coaxial cable, it accepts the signal
from the UHF antenna while supplying power to the
antenna to drive the antenna booster. The supply
power can be set to 9V, OFF or 12V with the
ANTENNA a DC OUT switch on the front panel.
2ANTENNA a / OUTPUT (TV-CH) 59 to 61
connectors
Connect to the ANTENNA a IN connectors of other
antenna dividers or tuners.
Note
This unit works only in the band between 774 MHz
and 798 MHz (TV channels 59, 60, and 61).
The connectors with the markings 62, 63 and 64 have
no functions.
AC power block
3AC IN connector
Connect to an AC power source with the supplied AC
power cord.
ANTENNA b block
4ANTENNA b / ANT IN/DC OUT (9V/OFF/12V)
connector
Through a single coaxial cable, it accepts the signal
from the UHF antenna while supplying power to the
antenna to drive the antenna booster. The supply
power can be set to 9V, OFF or 12V with the
ANTENNA b DC OUT switch on the front panel.
5ANTENNA b / OUTPUT (TV-CH) 59 to 61
connectors
Connect to the ANTENNA b IN connectors of other
antenna dividers or tuners.
Note
This unit works only in the band between 774 MHz
and 798 MHz (TV channels 59, 60, and 61).
The connectors with the markings 62, 63 and 64 have
no functions.
3AC IN connector
1ANTENNA a / ANT IN/DC OUT
(9V/OFF/12V) connector
4ANTENNA b / ANT IN/DC OUT
(9V/OFF/12V) connector
AC power cord
(supplied)
to an AC power source
Rear Panel
2ANTENNA a / OUTPUT (TV-CH) 59 to 61
connectors
5ANTENNA b / OUTPUT (TV-CH) 59 to 61
connectors

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Connection to the WD-820A
AN-820A AN-820A
⁄AC IN
⁄AC IN
12 1CASCADE 3 42
ANTENNA B
IN
DC OUT (9V/OFF/12V)
OUT
12 1CASCADE 3 42
ANTENNA A
IN
DC OUT (9V/OFF/12V)
OUT
6160 6362
ANTENNA b
DC OUT
(9V/OFF/12V)
OUTPUT (TV-CH)
59 6160 6362
ANTENNA a
ANT IN
59 64 64
DC OUT
(9V/OFF/12V)
OUTPUT (TV-CH)
ANT IN
WD-820A
for TV-CH60
WD-820A
for TV-CH60
WD-820A
for TV-CH59
WD-880A
WD-820A
for TV-CH61
WD-820A
for TV-CH61
Notes
•For the connection from the WD-820A to the WRR-850A/840A/820A,
refer to the operating instructions for the WD-820A or the WRR-850A/
840A/820A.
•The 9V power for the booster amplifiers of the AN-820A UHF antenna
is supplied from the ANTENNA a and b ANT IN/DC OUT (9V/OFF/
12V) connector of this unit. Be sure not to short-circuit these
connectors. If short-circuited, the protection circuit activates and the
power supply stops. To resume power supply, first eliminate the short
circuit, then set the DC OUT switches to OFF and return them to the
original position after 2 or 3 seconds.
•Always use a pair of antennas a and b, as shown above.
For installation and the reception ranges of the antennas, refer to the operating
instructions for the WRR-850A/840A/820A UHF synthesized diversity tuners.

9
This section introduces you examples of the 24-channel reception system
plan and diagrams using the WD-880A antenna divider.
For further details on system configuration and channel plans, refer to the
operating instructions of the WRR-850A/840A/820A UHF synthesized diversity
tuners.
System Configuration
24-Channel System Plan Using Group U1 or U2
By combining channel groups U1 and U2 for models 59, 60 and 61 of the
WRR-850A/840A/820A, it is possible to operate 24 channels
simultaneously.
TV Channel
Group name
Number of channels
Number of simultaneously
operable channels when models
59, 60 and 61 are used together.
59
U1 or U2
8
60
U1 or U2
8
24
61
U1 or U2
8
An example of group combination
You can select either group for a TV channel regardless of the group
setting for other TV channels.
TV Channel
Group Combination Example 1
Example 2
Example 3
Example 4
•
•
•
•
61
U1
U2
U1
U2
•
•
•
•
60
U1
U2
U2
U1
•
•
•
•
59
U1
U2
U1
U1
•
•
•
•
•For further information on group settings, see the connection diagrams on page
10 or 11.
•For the channel frequency assignment for groups U1 and U2, see page 12.
Note
If groups U1 and U2 are not factory-stored on your WRR-840A/820A, use
group 00 to select a desired channel of group U1 and U2 when setting up a
24-channel simultaneous operation system.
For channel selection, see the channel frequency assignment tables on page 12.

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24-Channel System Diagrams
The typical system examples according to the system plan using groups
U1 or U2 are shown below.
When operating 24 channels simultaneously, you will need both the WD-
820A and the WD-880A antenna dividers.
Example 1: System with the WRR-850A
System Configuration
AN-820A AN-820A
WD-880A
TV-CH61
TV-CH60
TV-CH59
TV Channel 61: 8 Channels
Group U1 or U2
WRR-
850A (61)
WD-820A
TV Channel 60: 8 Channels
Group U1 or U2
WRR-
850A (60)
WD-820A
TV Channel 59: 8 Channels
Group U1 or U2
WRR-
850A (59)
WD-820A

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Example 2: System with the WRR-840A
AN-820A AN-820A
WD-880A
TV-CH61
TV-CH60
TV-CH59
TV Channel 61: 8 Channels
Group U1 or U2
WRR-
840A (61)
WD-820A
TV Channel 60: 8 Channels
Group U1 or U2
WRR-
840A (60)
WD-820A
TV Channel 59: 8 Channels
Group U1 or U2
WRR-
840A (59)
WD-820A

12
Groups U1 and U2 are planned to simultaneously
receive up to 8 wireless microphones.
Group U1 Frequency (in MHz)
Channel
59-11
59-13
59-19
59-24
59-34
59-43
59-46
59-50
Frequency
775.375
775.625
776.375
777.000
778.250
779.375
779.750
780.250
Frequency
783.375
783.625
784.375
785.000
786.250
787.375
787.750
788.250
Channel
61-11
61-13
61-19
61-24
61-34
61-43
61-46
61-50
Channel
60-11
60-13
60-19
60-24
60-34
60-43
60-46
60-50
Frequency
791.375
791.625
792.375
793.000
794.250
795.375
795.750
796.250
TV-CH59 TV-CH60 TV-CH61
System Configuration
Channel Plan and Freqeuncy Assignment for Groups U1 and U2
Frequency (in MHz)
Frequency
791.750
792.000
792.500
793.750
794.125
795.125
796.000
796.625
Channel
60-14
60-16
60-20
60-30
60-33
60-41
60-48
60-53
TV-CH59 TV-CH60 TV-CH61
Frequency
775.750
776.000
776.500
777.750
778.125
779.125
780.000
780.625
Frequency
783.750
784.000
784.500
785.750
786.125
787.125
788.000
788.625
Channel
61-14
61-16
61-20
61-30
61-33
61-41
61-48
61-53
Channel
59-14
59-16
59-20
59-30
59-33
59-41
59-48
59-53
Group U2

13
Rack Mounting
1Remove the feet of the unit in advance.
Foot
Pin
2Mount the unit on the rack using screws that are at least 10 mm (2/5in.)
long and that match the diameter of the screw holes on the rack.
WD-880A
Rack
Bottom panel
WD-880A
64
ababababab
9V OFF
ANTENNAa
DCOUT
POWER
S
UHFANTENNADIVIDERWD-880A
12V 9V OFF
ANTENNAb
12V
656
6
CONNECTIONINDICATOR
676
8ab
69
Remove the pins inside the
feet with a small screwdriver
or similar tool.
64
ababababab
9VOFF
ANTENNAa
DC OUT
POWER
S
UHF ANTENNA DIVIDER WD-880A
12V9VOFF
ANTENNAb
12V
65 66
CONNECTION INDICATOR
67 68 ab
69
Screws

14
You can remove the rack mounting brackets from the unit if you do not
intend to mount it in a rack.
Removing the Mounting Brackets
Side view
Dimensions
Unit: mm (inches)
Front view
430 (17)
482 (19)
WD-880ARack mounting bracket
300 (1113/16)
Rack mounting bracket
44
(13/4)
47
(17/8)
26
(11/16)26
(11/16)
Rack Mounting
POWER
S
59
ababababab
9V OFF
ANTENNA a
DC OUT
UHF ANTENNA DIVIDER WD-880
12V 9V OFF
ANTENNA b
12V
60 61
CONNECTION INDICATOR
62 63 ab
64
Rack mounting bracket

15
Specifications
Frequency range 774 to 798 MHz
Antenna input connectorsBNC-R type (1 each for antennas “a”and “b”)
Antenna output connectors1)
BNC-R type (3 each for antennas “a”and “b”)
Antenna input/output impedance
50 ohms
Number of RF distribution1)
3 distributions (TV channels 59 to 61) each for
antennas “a”and “b”
RF distribution loss 0 dB ±3 dB (distributed from the antenna input)
Power input connector 3-pin inlet (1)
Power supply for antenna boosters
DC 12V or 9V, or OFF (switchable),
supplied through the antenna input connectors
Power requirements AC 220 to 240V, 50 Hz
Power consumption 16 W
Indications1) 6 LEDs for antenna output connection indicators
Operating temperature 0°C to +50°C (+32°F to +122°F)
Recommended operating temperature
+15°C to +35°C (+59°F to +95°F)
Storage temperature –10°C to +60°C (+14°F to +140°F)
Dimensions 482 ×44 ×300 mm
(19 ×13/4×1113/16 inches) (w/h/d)
(including mounting brackets, but not feet)
Mass Approx. 4.5 kg (9 lb 15 oz)
Accessories supplied AC power cord (1)
Operating Instructions (1)
Design and specifications are subject to change without notice.
1) Note:
This unit works only in the band between 774 MHz and
798 MHz (TV channels 59, 60, and 61).
The output connectors and LEDs (connection indicators)
with the markings 62, 63 and 64 have no functions.
.............................................................................................................................................................................................................................................................................................................................................................................................................

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Sony Corporation Printed in Japan