Sony WRR-855B, Руководство по обслуживанию, Страница: 8 / 84

1-4
WRR-855B
9
(GB)
Settings
Channel Selection
Notes
Take the following precautions to prevent interference and
noise.
• Do not simultaneously use two or more microphones and
transmitters that are set to the same channel.
• When using two or more tuners simultaneously, always set
the tuners that use the same groups (other than group 00) to
different channels in that group.
• The reception antennas and transmitter should be used at
least 3 meters away from each other.
Operations
1
Turn the POWER switch ON.
On the WRR-855A, the “HELLO” message appears on
the display, then it changes to the tuner status indication
shown before the tuner was previously turned off.
On the WRR-855B, the version number of your tuner (for
example “U66”) appears, then it changes to the tuner
status indication shown before the tuner was previously
turned off.
Note
POWER switch operation should be performed after
disconnecting the input from connected equipment, as
noise will be heard if the switch is turned ON or OFF
beforehand.
2
Press and hold the GP button down for more than one
second.
The tuner goes to the group selection mode and the group
number flashes.
3
Press the + or – button to select the group.
Pressing the + button cyclically changes the groups in
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5
ON
OFF
MUT
ING
POW
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GP
–
+
GP
/CH
RF
AF
S
2
4
1
3,5
Group
selection mode
(Continued)
10
(GB)
Settings
numerical order and pressing the – button changes them
in the reverse order.
Press and hold down the button to continuously change
the display.
Channel selection
mode
Display example for U66 model
If no buttons are pressed for 5 seconds, the group
selection mode is automatically cancelled and the lowest
frequency channel in the group selected at that time is
displayed.
For Group 00, however, the channel previously set in
Group 00 appears.
4
When the desired group is displayed, press the CH button.
The tuner goes to the channel selection mode and the
channel number flashes.
Model available in Australia
Model available in USA
Model available in Europe (CE21)
11
(GB)
5
Press the + or – button to select the channel.
Pressing the + button cyclically changes the channels of
the group selected in step
3 in the listed order in the
respective table in the “Wireless Microphone System
Frequency List ” supplied with this manual.
Pressing the – button changes them in the reverse order.
When you reach the last channel in the group, press the +
button to return to the first channel in the group.
Likewise, press the – button to go from the first channel
to the last channel.
6
After the desired channel is displayed, leave the unit for
5 seconds without pressing any buttons.
Channel selection mode is automatically canceled and
the channel shown on the display is set.
When the group 00 is selectedfor U66 model
Storing the group and channel
The selected group and channel set by the above procedure
are stored in memory when the display stops flashing.
Notes
To eliminate interference or noise, please note the
following.
• Do not use two or more wireless microphones or
transmitters whose wireless channels are the same.
• If there is a TV broadcasting station nearby, to avoid
possible interference from its broadcast, do not use that
station’s channel.
• The number of wireless channels actually usable in a
multi-channel system may be smaller than the normal
capacity of that system if there is interference from TV
broadcasting or other RF signals.
• To operate two or more UHF synthesized wireless
microphones/transmitters using the same wireless channel
of the same group, ensure that the wireless microphones/
transmitters are at least 100 m (330 feet)
1) apart as far as
they are installed within sight of each other.
• When using two or more WRR-855A/855Bs, do not
directly put one unit upon the other.
.........................................................................................................................
1) The distance depends on the operating environment and conditions.
12
(GB)
Interference-check function
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”).
Notes
• 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.
Settings
Setting and Releasing the T (Tone
Squelch) OFF Mode
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.