Sennheiser EM 3731 Instructions For Use Manual page 78

The operating menu
Squelch
300
μV
μV
30 30
10
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DEV
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H
z
sync
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BANK AF COM
esc
CH
Booster
Booster Feed On
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Adjusting the squelch threshold
Both receivers are equipped with a squelch that can be adjusted via the
"Squelch" menu. The squelch eliminates annoying noise when the
transmitter is switched off. It also suppresses sudden noise when there is
no longer sufficient transmitter power received by the receiver.
The squelch can be adjusted in 13 steps from 0 to 30 μV. Selecting a
smaller value reduces the squelch threshold, selecting a higher value
increases the squelch threshold. Adjust the squelch threshold – with the
transmitter switched off – to the lowest possible value that suppresses
hissing noise.
Notes:
– If the squelch threshold is adjusted too high, the transmission range
will be reduced. Therefore, always adjust the squelch threshold to the
lowest possible setting.
– If you adjust the squelch threshold to "0", the squelch is switched off.
If no RF signal is being received, hissing noise will occur. This setting
is for test purposes only.
To adjust the squelch threshold:
Before adjusting the squelch threshold to a different setting, set the
volume on a connected amplifier to the minimum.
Change to the setting mode of the "Squelch" menu.
The current setting starts flashing.
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Change the squelch threshold by turning the jog dial
The new setting becomes effective immediately.
After you have adjusted the desired squelch threshold, press the
digital audio
processing
8
button .
sync
The squelch threshold is stored. The display changes to the selection
mode of the operating menu.
Switching the booster supply voltage on/off
If you connect antenna boosters (e.g. AB 3700) or active antennas (e.g.
A 3700, AD 3700), select "Booster Feed On" in the "Booster" menu so that
N S
the LEDs and
active antennas, select "Booster Feed Off" in the "Booster" menu so that
N S
the LEDs and
Notes:
– The booster supply voltage is short-circuit proof.
– If you connect active antennas or antenna boosters, the current
consumption of the overall device is increased.
– If the booster supply voltage is switched on, it remains switched on
even when the receiver is switched off.
Change to the setting mode of the "Booster" menu.
The current setting starts flashing.
light up; if you do not connect antenna boosters or
do not light up.
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