Sony WRR-855A Benutzerhandbuch

12

 

(GB)

Before operating a wireless microphone or transmitter, you
can check for possible interference by using the
interference-check function of this unit.  To check the
interference, simultaneously press the + and – buttons in the
channel selection mode (the channel number flashes).  The
channels of the selected group are automatically switched
one by one in sequence (this operation is called “scanning”).

• When the MUTING switch is ON and the unit is not in the

T OFF mode (see page 13), scanning stops and the channel
at that time is selected if a tone signal (32.768 kHz) is
detected in the signal received during scanning.
However, scanning will not stop if a interfering signal
having no tone signal is received.
In this case, check for the interference by observing the RF
input level indicator.

• Scanning is automatically cancelled when all the channels

of the selected group are scanned twice.  To cancel
scanning in progress, press any of the operation buttons.

• If an extremely strong signal is received, scanning may

stop at a point other than the actual channel.

The WRR-855A/855B 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
selected 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.

Only the muting functions described in (2) can be canceled
by selecting the Tone-squelch OFF (T OFF) mode when
desired.  Apply this mode when you use a transmitter with
no specified tone signal.