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Multi-channel operation
Combined with ew 500 G2 transmitters, the receivers can form transmission
links that can be used in multi-channel systems. For multi-channel operation,
only use the free channels in a channel bank.
Before putting the transmission links into operation, we recommend
performing an auto scan.
̈ Scan one of the two receivers of the EM 550 G2 for free channels.
̈ Select a channel bank with a sufficient number of free channels.
̈ Set all transmitter/receiver pairs in you multi-channel system to the free
channels in this channel bank.
Adjusting the audio output level
AF Out
Via the “AF Out” menu, you can adjust the audio output level of the each
receiver of the EM 550 G2. The level can be adjusted in 22 steps. Adapt the
level of the audio output (receiver RX A: AF OUT A or receiver RX B: AF OUT B)
to the input of the connected unit. The following figures are a guide to the
best settings:
Line level input: 0 to +18 dB
Microphone level input: –22 to –6 dB
Adjusting the squelch threshold
Squelch
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.
Note:
Before adjusting the squelch threshold to a different setting, set the
volume on a connected amplifier to the minimum.
There are three possible squelch settings:
y Low = low
y Mid = middle
y High = high
Selecting the setting “Low” reduces the squelch threshold, selecting the
setting “High” increases the squelch threshold. Adjust the squelch threshold
– with the transmitter switched off – to the lowest possible setting that
suppresses hissing noise.
IMPORTANT! 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.
When in the setting mode of the “Squelch” menu, pressing the ̄ button
(DOWN) for more than three seconds will switch the squelch off. “Off”
appears on the display. If no RF signal is being received, hissing noise will
occur. This setting is for test purposes only.
Bank
Free
Bank
Free
1
20
2
20
3
17
4
11
5
12
6
20
7
02
8
03
U
20
EM_550_G2.book Seite 58 Donnerstag, 27. November 2003 1:33 13