Care and maintenance – Sennheiser Freeport User Manual
Page 11
10
Adjusting the squelch threshold
Interference due to other transmission links can be eliminated as
follows:
̈
Switch off the transmitter. The receiver should no longer receive a
signal.
̈
If the receiver still receives a signal, use the
SQUELCH
control
¹
to
increase the squelch threshold so that the signal will no longer be
received. If the signal cannot be eliminated in this way, set the
transmitter and the receiver to a different channel.
̈
Switch on the transmitter again and check if the receiver receives
the transmitter signal.
Note:
If the squelch threshold is adjusted too high, the transmission range
will be reduced. Therefore, always adjust the squelch treshold to the
lowest possible setting.
Selecting a channel
Transmitters and receivers have four channels respectively with
intermodulation-free frequencies.
Note:
These frequencies are different to those in evolution systems and
freePORT systems should not be used together with evolution sys-
tems without great care.
̈
Always set the transmitter and the receiver to the same channel.
Adjusting the transmitter sensitivity
̈
Use the
GAIN
control
¾
on the SK 2 bodypack transmitter to adjust
the sensitivity so that even during the loudest passages the
AF PEAK
LED
¶
on the EM 1 receiver does not light up.
Care and maintenance
Use a slightly damp cloth to clean the units from time to time.
Note:
Do not use any cleansing agents or solvents.
To clean the SKM 3’s sound inlet basket:
̈
Unscrew the sound inlet basket
³
(turn counterclockwise) and
remove it.
̈
Remove the foam insert and use a slightly damp cloth to clean the
sound inlet basket.
̈
Reinsert the dry foam insert, replace the sound inlet basket on the
SKM 3 and screw it tight.
¹
¶
³
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