Sony WRR-801A Service Manual page 11

Channel Setting
Automatic Search and Setting of
Available Channels
You can set multiple channels by setting a group for
the first tuner unit only. For other tuner units, available
channels in the same group are automatically set.
1
Power off all wireless microphones and
transmitters.
2
On the first tuner unit, select the group to be used.
3
Press the SET button on the first tuner unit and
hold it down for 3 seconds.
Available channels in the same group are
automatically set on the other tuner units.
After automatic setting, you can adjust the groups
and channels of individual tuner units.
Note
Set each tuner unit to the same group.
12
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.
1
Follow the procedure explained above to set the
group and channel of the first tuner.
2
Power 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.
3
On the first tuner unit of the second tuner, set an
available channel in the same group as selected on
the first tuner.
4
Press 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 in
use neither by the first tuner nor by the first tuner
unit on the second tuner) are automatically set on
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.
Operation
1 2
UHF synthesized
wireless
microphone UHF synthesized
+ transmitter
–
3
1
Turn 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.
2
Set the reception channel.
For details on setting the channels on the tuner, see
"Channel Setting" on page 11.
3
Turn 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.
Connect the output signals to a mixer or an
amplifier (see page 10).
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.
13