Sony WRT-822A Manuel utilisateur

3-866-667-31 (1)

WRT-822A

UHF

SynthesizedTransmitter

Operating Instructions

1999 by Sony Corporation [AU66]

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.

•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.

Table of Contents

Precautions ......................................................................... 3

Overview............................................................................. 4

Features .......................................................................... 4

System Configuration .................................................... 5

Wireless Channels Selectable ........................................... 6

Parts Identification ............................................................ 7

Power Supply ..................................................................... 9

Connections ...................................................................... 10

Notes on Microphone

System Operation....................................................... 10

Settings.............................................................................. 11

Initiating Setting Mode ................................................ 11

Changing the Transmitting Channel ............................ 11

Changing the Input Attenuation Setting ...................... 12

Resetting the Accumulated Time Indication ............... 13

Error Messages ................................................................ 14

Specifications.................................................................... 15

Overview

Features

Phase Locked Loop (PLL) synthesized system

The WRT-822A has a refined phase locked loop (PLL)

synthesizer circuit.

Compact and lightweight

Innovative high-density mounting technology and

magnesium case have enabled the creation of this compact

and lightweight transmitter, which lets you move anywhere

for Electronic News Gathering (ENG) and Electronic Field

Production (EFP).

Remote battery alarm on tuner

This transmitter has capability of transmitting “Battery

status information” to Sony tuners which support the battery

status indication on both transmitter and tuner.

The information is sent to the tuners in approx. one hour

advance to battery exhaust so that they can safely replace

batteries of the transmitter.

Operation powered by easily available batteries

The built-in high efficiency DC-DC converter allows stable

operation, for about 8 hours continuously, with two LR6

(size AA) alkaline batteries.

LCD for coordinated operation control

The built-in CPU controls operation of the unit, including

the PLL circuit function. The LCD shows the current

The WRT-822A ensures excellent sound quality of the

microphone itself and provides the convenience especially

for Electronic News Gathering (ENG), live and other

Electronic Field Production (EFP) applications. Combining

with 800 MHz band Sony UHF wireless microphone

system, use this highly reliable transmitter for broadcast and

movie production purpose.

channel number/frequency, 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 one-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 batteries are 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.

Compatibility with Sony lavalier microphone

The transmitter is compatible with Sony lavalier

microphones, including the ECM-77BC.

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

System Configuration

The WRT-822A can be used with the tuners listed below.

Sony 800 MHz band system models

a) For this models, the AN-820A UHF antenna and the WD-820A UHF

antenna divider are required.

Frequency band Model name

channel

Frequency

(MHz)

792.250 - 798.500

799.250 - 805.500

Transmitter or

microphone

WRT-805A(66)

WRT-810A(66)

WRT-820A(66)

WRT-822A(66)

Tuner

WRR-805A(66)

WRR-810A(66)

WRR-840A(66)a)

WRR-860A(66)

Wireless Channels Selectable

lennahClennahC lennahC lennahClennahC)zHM(ycneuqerF)zHM(ycneuqerF )zHM(ycneuqerF )zHM(ycneuqerF)zHM(ycneuqerFlennahClennahC lennahC lennahClennahC)zHM(ycneuqerF)zHM(ycneuqerF )zHM(ycneuqerF )zHM(ycneuqerF)zHM(ycneuqerFlennahClennahC lennahC lennahClennahC)zHM(ycneuqerF)zHM(ycneuqerF )zHM(ycneuqerF )zHM(ycneuqerF)zHM(ycneuqerFlennahClennahC lennahC lennahClennahC)zHM(ycneuqerF)zHM(ycneuqerF )zHM(ycneuqerF )zHM(ycneuqerF)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

40-66526.297 03-66578.597 40-76526.997 03-76578.208

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

01-66573.397 63-66526.697 01-76573.008 63-76526.308

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

41-66578.397 04-66521.797 41-76578.008 04-76521.408

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

02-66526.497 64-66578.797 02-76526.108 64-76578.408

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

42-66521.597 05-66573.897 42-76521.208 05-76573.508

52-66052.59715-66005.89752-76052.20815-76005.508

62-66573.59762-76573.208

BATT

–

SET

OFF

AFRF

4SET

button

5POWER

switch

Battery

holder

Wire antenna

3Audio

input

connector

2+/– buttons

1Display section

SET

Use a ballpoint pen or

similar instruments

to press +/– , SET

buttons.

Parts Identification

1Display section

ABC

AAF (audio input) indication

Lights when an audio signal over the reference level is being

supplied.

BRF (antenna output) indication

Lights when a signal is being transmitted from the antenna.

CBATT (battery) indication

Displays the status of the batteries.

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 frequency, input

attenuation and accumulated time indications as shown on

the next page.

Parts Identification

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 one-minute increments).

For adjustments, see “Changing the Transmitting Channel”

on page 11, “Changing the Input Attenuation Setting” on page 12

or “Resetting the Accumulated Time Indication” on page 13.

2+ (+ selection) / – (– selection/reset) buttons

In setting mode, select the transmission channel, frequency

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.

Channel indication

Attenuation indication

Accumulated time

indication

Frequency indication

3Audio input connector

Connect the output connector of the following Sony lavalier

microphones: ECM-44BC, ECM-55BC, ECM-66BC,

ECM-77BC, ECM-166BC, ECM-310BC, ECM-350BC.

You can also use your wired microphone by connecting it to

this connector with an optional EC-1.5CF microphone cable.

See “Connections” on page 10.

4SET button

In normal Transmit mode, this button changes the indication

items of the display section as shown on the left column.

In Setting mode, this button selects the item to be set. To

initiate the setting mode, set the POWER switch to ON

while holding this button down.

For setting the transmit channel, input attenuation or

resetting the time-of-use indication in Setting mode, see

“Settings” on page 11.

5POWER 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.

Note

Be sure to connect a microphone before turning the power

ON.

Two LR6 (size AA)

alkaline batteries

The transmitter can operate on two LR6 (size AA) alkaline

batteries continuously for about 8 hours at 25°C (77°F). Battery indication

When you turn the power on, the battery status appears in

the BATT indication on the display section.

When the batteries reach stage 3shown in the table, the

battery indication on the tuner also starts flashing.

Note

The indication may be incorrect if the batteries are not new

when installed. If you plan to use the transmitter for a long

period, it is best to replace the batteries with new ones.

Notes on batteries

•Use new alkaline batteries.

•Do not pair different types of batteries.

•Always replace the two batteries together.

•The batteries are not rechargeable.

•Be careful to install the batteries with the correct polarity.

•When not using the transmitter for a long period, remove

the batteries to avoid leakage. If the batteries do leak,

clean all leakage from the battery holder case and the unit.

Leakage left in the holder case and the unit may cause

poor battery contact. If there seems to be poor battery

contact, consult your Sony dealer.

Power Supply

Installing the batteries

1Slide the battery-holder catches inward (in the direction

of the arrows bb

b B) to take out the battery holder.

2Match the polarities and insert the batteries.

3Set the battery holder in the original position.

1234

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Microphone (not supplied)

Caution

When connecting a microphone to the unit, be sure to turn

the unit off.

To connect a microphone

The WRT-822A accepts the following Sony lavalier

microphones:

ECM-44BC ECM-55BC ECM-66BC

ECM-77BC ECM-166BC

ECM-310BC ECM-350BC

You can also use your wired microphone by connecting it to

this connector with an optional EC-1.5CF microphone cable.

To secure the microphone cable connection, be sure to turn

and lock the connector cover as illustrated below.

For the input attenuation adjustment, see page 12.

Connections

•To operate with two or more channels, maintain a distance

of at least 30 cm (one ft.) between each pair of

transmitters.

For details of operation with two or more channels, refer

to the Operating Instructions for the tuner which is used

with the WRT-822A.

•Ensure that the tuners set to channels not being used are

either turned off or set to the minimum output level.

•When powering the transmitter on or off, to keep the noise

to a minimum, set the audio output level from the tuner or

mixer to a minimum.

•Powering the transmitter on without checking the channel

selection first may interfere with the operation of other

microphones/transmitters, if the current setting is already

being used.

•To prevent noise generation, keep the transmitters at least

3 m (10 feet) away from the antennas when the system is

operated using a group which allows selection of up to 11

channels, and at least 6 m (20 feet) away when using a

group which allows selection of 12 channels.

Notes on Microphone

System Operation

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