Sony WRT-805A User manual

3-860-341-31(1)
WRT-805A
1997 by Sony Corporation [AU66]
UHF
SynthesizedTransmitter
Operating Instructions EN
S

2
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 thinners 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......................................................................... 2
Introduction ....................................................................... 3
Features .......................................................................... 3
Channels and Carrier Frequencies.................................. 5
Parts Identification ............................................................ 6
Power Supply ..................................................................... 8
Connections ...................................................................... 10
Notes on Microphone System Operation....................... 11
Settings.............................................................................. 11
Initiating Setting Mode ................................................ 11
Changing the Channel Selection.................................. 12
Changing the Input Attenuation Setting ...................... 13
Resetting the Accumulated Time Indication ............... 14
Error Messages ................................................................ 14
Specifications.................................................................... 15

3
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 14-MHz frequency band (or two consecutive-numbered
TV channels, such as 66 and 67 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 102 channels
The unit can operate on any one of 102 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.
Remote battery alarm on tuner
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.

4
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
Introduction

5
The WRT-805A can transmit on any selected wireless
channel among those listed below. For channel selection, see “Changing the Channel Selection” on page 12.
Channels and Carrier Frequencies
lennahCLW)zHM(ycneuqerFlennahCLW)zHM(ycneuqerFlennahCLW)zHM(ycneuqerFlennahCLW)zHM(ycneuqerF
10-66052.29772-66005.59710-76052.99772-76005.208
20-66573.29782-66526.59720-76573.99782-76526.208
30-66005.29792-66057.59730-76005.99792-76057.208
40-66526.29703-66578.59740-76526.99703-76578.208
50-66057.29713-66000.69750-76057.99713-76000.308
60-66578.29723-66521.69760-76578.99723-76521.308
70-66000.39733-66052.69770-76000.00833-76052.308
80-66521.39743-66573.69780-76521.00843-76573.308
90-66052.39753-66005.69790-76052.00853-76005.308
01-66573.39763-66526.69701-76573.00863-76526.308
11-66005.39773-66057.69711-76005.00873-76057.308
21-66526.39783-66578.69721-76526.00883-76578.308
31-66057.39793-66000.79731-76057.00893-76000.408
41-66578.39704-66521.79741-76578.00804-76521.408
51-66000.49714-66052.79751-76000.10814-76052.408
61-66521.49724-66573.79761-76521.10824-76573.408
71-66052.49734-66005.79771-76052.10834-76005.408
81-66573.49744-66526.79781-76573.10844-76526.408
91-66005.49754-66057.79791-76005.10854-76057.408
02-66526.49764-66578.79702-76526.10864-76578.408
12-66057.49774-66000.89712-76057.10874-76000.508
22-66578.49784-66521.89722-76578.10884-76521.508
32-66000.59794-66052.89732-76000.20894-76052.508
42-66521.59705-66573.89742-76521.20805-76573.508
52-66052.59715-66005.89752-76052.20815-76005.508
62-66573.59762-76573.208

6
Parts Identification
Location of parts
1POWER switch
Turns the power of the transmitter ON or OFF.
When you set this switch to ON without holding any other
button, the transmitter is set to normal Transmit mode and
transmits the signal of the selected channel.
When you set this switch to ON while holding the SET
button down, Setting mode is initiated. No signal is
transmitted in Setting mode.
For setting mode, see “Settings” on page 11.
Note
Be sure to connect a microphone or guitar cable before
turning the power ON.
2Liquid-crystal display
aAF (audio input) indication
Lights when an audio signal over the reference level is being
supplied.
AF RF BATT
CH
a b c
d
POWER
OFF ON
INPUTPHASE
SETCH
AF
RF
BATT
+
–
Battery
compartment
(See page 8.)
2Liquid-crystal
display
4+/– buttons
3SET button
8Belt clip
6INPUT level
switch
7PHASE switch
Antenna
1POWER switch
5Audio input
connector

7
bRF (antenna output) indication
Lights when a signal is being transmitted from the antenna.
cBATT (battery) indication
Displays the status of the battery.
See “Battery indication” on page 9.
dCH (channel) indication
Displays the transmission channel.
Each time you press the SET button in normal Transmit
mode, the channel indication changes to the input
attenuation and accumulated time indications.
In Attenuation indication mode, it displays the input
attenuation setting in dB, which can be changed in a range
of 0 to 21 dB in 3-dB steps.
In Accumulated time indication mode, it displays the
accumulated time of battery use (in 1-minute increments).
For adjustments, see “Changing the Channel Selection” on
page 12, “Changing the Input Attenuation Setting” on page
13 or “Resetting the Accumulated Time Indication” on page
14.
3SET button
In normal transmit mode, press this button to change the
indication items in the lower half of the liquid-crystal
display.
When you set the POWER switch to ON while holding this
button down, setting mode is initiated. In Setting mode,
press this button to select the item to be set.
For Setting mode, see “Settings” on page 11.
4+ (+ selection) / – (– selection/reset) buttons
In setting mode, select the transmission channel and
attenuator level using either of these buttons, or reset the
time-of-use indication to “00:00” with the – button.
For Setting mode, see “Settings” on page 11.
5Audio input connector (ø3.5 mm, with locking
mechanism)
To connect a microphone or other audio source.
See “Connections” on page 10.
GND +5 V (output)
INPUT
Channel
indication Attenuation indication Accumulated time
indication
CH CH CH

8
SET
CH
+
–
PUSH
6INPUT level switch
Select the reference input level appropriate for the connected
audio source.
–60 dBV: For a microphone
–40 dBV: For an electric guitar
7PHASE switch
Select the input phase appropriate for the connected audio
source.
= : For a microphone other than the ECM-44BMP or an
electric guitar
ø : For the ECM-44BMP
Power Supply
The transmitter can operate on one LR6 (size AA) alkaline
battery continuously for about 6 hours at 25°C (77°F).
Inserting the battery
1Slide the lid in the direction of the arrow ($) to open the
battery compartment.
2Match the polarities and insert the battery.
3Close the lid and slide it in the reverse direction to lock.
Lid
Switch functions
7hctiwsESAHP 6hctiwslevelTUPNI VBd06–VBd04–
=
PMB121-MCE
PMB221-MCE
PMB013-MCE PM7.0-CG
øPMB44-MCE—
8Belt clip
You can easily carry the transmitter attached to your
clothing on your belt, etc. Depending on your selection of
the mount holes for the belt clip, you can adjust the position
or even carry the unit with the antenna downward.
Parts Identification

9
Battery indication
When you turn the power on, the battery status appears in
the BATT indication on the liquid-crystal display.
1234
TTAB
noitacidni
sthgiLsthgiLsehsalFffoseoG
yrettaB
noitidnoc
dooGnahtsseL
egrahc-flah
tsomlA
detsuahxe yletelpmoC detsuahxe
When the battery reaches stage 3 shown in the table, the
BATT indication on the WRR-800A/801A/850A also starts
flashing.
Promptly replace the battery when the indications flash.
Note
The indication may be incorrect if the battery is not new
when inserted. If you plan to use the transmitter for a long
period, it is best to replace the battery with new one.
Notes on battery
•Use a new alkaline battery.
•Be careful to insert the battery with the correct polarity.
•When not using the transmitter for a long period, remove the
battery to avoid leakage. If the battery does leak, clean all
leakage from the unit and insert a new battery. Leakage left
in the unit may cause poor battery contact. If there seems to
be poor battery contact, consult your Sony dealer.

10
POWER
OFF ON
INPUTPHASE
SETCH
AF
RF
BATT
+
–
1
2
Connections
Caution
When connecting a microphone or electric guitar to the unit,
be sure to turn the unit off.
To connect an electric guitar
For connection of an electric guitar, use the optional GC-0.7
MP Guitar Cable.
To obtain the proper output level
The optimum level setting depends on type of guitar. Set the
INPUT level switch and the ATT (attenuator) level of this unit
according to the guitar to be used.
INPUT switch: –60 dBV
Set the PHASE switch to “ø” when
using the ECM-44BMP.
For other microphone, set it to “=.”
INPUT level switch: –40 dBV
PHASE switch: =
GC-0.7 MP
guitar cable
(optional)
Loud noise: If noise is not negligible even if the INPUT
switch is set at “–40 dBV” and the ATT level is “0 dB,” set
the INPUT switch to “–60 dBV” and adjust the ATT level
for an optimum result.
Distortion: If the guitar sound is distorted even if the
INPUT switch is set at “–40 dBV” and the ATT level is “0
dB,” increase the ATT level by 3 dB (0 to 3 to 6 . . . 21 dB).
For the ATT level adjustment, see page 13.
To connect a microphone
When using one of the following optional Sony Electret
Condenser Microphones equipped with a miniature phone
plug, connect it as illustrated below.
Sony
Electret Condenser
Microphones (optional):
ECM-44BMP
ECM-122BMP
ECM-121BMP
ECM-310BMP
POWER
OFF ON
INPUTPHASE
SETCH
AF
RF
BATT
+
–
1
2