Sony WRT-847A, Service Manual

Page: 8 / 54

1-4
WRT
-847A/847B
7
(GB)
Good
Power Supply
2
Match two batteries to the polarity markings and insert
them into the battery holder.
3
Close the battery holder and lock the grip by turning it
in the opposite direction of the arrow.
Battery indication
When you turn the power on, the battery condition is
indicated by the BATT indication in the LCD display.
The transmitter can operate on two LR6 (size AA) alkaline
batteries continuously for about eight hours (at 10 mW RF
power, 25 ºC / 77ºF).
Inserting the batteries
1
Turn the grip in the direction of the arrow to open the
battery holder.
1 2 3 4
BATT
indication Lights Lights Flashes Goes off
Battery
condition Less than
half-charge Almost
exhausted Completely
exhausted
Note
The indication may be incorrect if the two batteries are not
new when inserted. If you plan to use the transmitter for a
long period, replace both batteries with new ones at the
same time.
2
1,3
8
(GB)
For the transmitting channels and frequencies selectable on
your transmitter, see the “Sony Wireless Microphone System
Frequency List” supplied with this manual.
Initiating Setting Mode
Enter Setting mode to change the transmitting channel, the
transmitting frequency, the audio gain level, the compander
time constant and the RF output power, or to reset the
accumulated battery use time indication.
To enter Setting mode
While holding down the SET button, set the POWER switch
to ON.
Hold the SET button down until an indication appears on the
LCD display.
The transmitter enters Setting mode and the indication
before the transmitter was previously turned OFF flashes on
the LCD display.
Pressing the SET button cycles the setting modes in the
order shown in the figure on the right column.
Note
On the model available in Europe, the transmitting channels
are grouped in four sets as shown in “Sony Wireless
Microphone System Frequency List”.
Settings
Transmitting
channel
1)
Transmitting frequency
Audio gain level
Accumulated battery use
time
Press SET
button.
Compander time
constant
RF output power
1) On the model available in Europe, the transmitting-
channel indication flashes in two steps; first, the left two
digits flash for setting the channel-group number, then the
remaining four digits flash for setting the channel number.
Display of the transmitting channel/frequency shows that of the
CE62 model as an example.
9
(GB)
The right four digits starts to flash for channel
number selection.
3) Select the channel number by pressing the + or –
button.
4)
When the desired channel number appears, press the
SET button.
3
When the desired channel number (or frequency)
appears, set the POWER switch to off position to
release Setting mode, or press the SET button to
continue operations in Setting mode.
Changing the Transmitting Channel
The transmitting channel can be selected through either the
channel number or the frequency.
1
Set the transmitter to Setting mode.
If the channel number (or frequency) indication does not
appear, press the SET button until the channel number
(or frequency) indication appears.
2
Press the + or – button to select the channel number (or
frequency).
Pressing the + button cycles the indication in the order
shown in the tables in the “Sony Wireless Microphone
System Frequency List” supplied with the manual.
Pressing the – button cycles the indications in the
opposite direction.
Hold down the button to change the channel number (or
frequency) quickly.
Note on the model available in Europe
On the model available in Europe, select the group
number before selecting the channel number as follows.
1)
When the left two digits flashes, select the group
number by pressing the + or – button.
2) When the desired group number appears, press the
SET button.
Group selection
mode Frequency
selection mode Channel
selection mode
Group, channel and frequency selection examples for the
model available in Europe (CE62)
m
:
+ button
M
:
– button
10
(GB)
The next time you turn on the transmitter (by setting the
POWER switch to ON), the transmitter will enter
Transmitting mode with the selected channel number (or
frequency).
Notes
• The transmitter cannot transmit in Setting mode.
• Make sure that the channel selected on the transmitter is
the same as that selected on the tuner being used in the
same system.
• Depending on the noise or interference conditions, all
selectable channels may not be usable. If necessary, you
can determine which channels are usable by cycling the
channel selection through a number of channels on the
tuner with the unit set to OFF. Those channels for which
the RF indicator on the tuner does not light are usable.
• The transmitter may not operate correctly if it is turned on
immediately after being turned off in Setting mode. Wait
for a few seconds before turning the power on again.
• The channel numbers and frequencies of your transmitter
are shown on the “Sony Wireless Microphone System
Frequency List” supplied with the manual.
Settings
AF RF BATT AF RF BATT
Changing the Audio Gain Setting
You can change the audio input gain within a range of
–12 dB to +9 (in 3-dB steps) in either Setting mode or
Transmitting mode.
When the audio input is excessively strong and distortion
occurs, reduce the input gain by setting it to “–12 dB” to
“–3 dB”. When the audio input is excessively low, raise the
input gain by setting it to “+3 dB” or “+9 dB”. The factory
preset setting is “0 dB”.
Changing the audio gain in Setting mode
1
Set the transmitter to Setting mode.
2
If the audio gain indication (“GAIN-” or “ATT-”) is not
displayed, press the SET button until it appears.
3
Press the + or – button to change the audio gain setting.
Hold down the button to change the level quickly.
+ button
button –