Sennheiser Rack-mount Receivers EM 2050 - Manual (Page 23)

Adjustment tips and functions
22
During the soundcheck, the receiver records the RF level and the AF level. The recording result
is displayed on the “
Soundcheck ” standard display:
The main menu “ Menu ”
Adjusting the squelch threshold
Adjustment range: 5 to 25 dB
μV, adjustable in 2-dB steps, can be switched off
The squelch eliminates annoying noise when the transmitter is switched off or when there is
no longer sufficient transmitter power received by the receiver.
̈
Adjust the squelch threshold – with the transmitter switched off – to the lowest possible
setting that suppresses hissing noise.
PEAK
-10
0
-20
-30
-40
AF
40
30
20
10
RF
P
AF Max
Soundche
20.32 ew5
543.20
RF Max
RF Min
Display Meaning What to do ...
RF Min Min. RF signal level:
must be well above the squelch
threshold level for one of the two
antennas
̈
Check if the antennas and the
antenna cables are correctly
connected.
̈
Improve the position of the
antennas.
̈
If necessary, use antenna boosters.
RF Max Max. RF signal level:
both antennas should reach 40 dB μV
AF Max Max. audio level
̈
On your transmitter, adjust the
audio level as high as possible
(max. 0 dB) without the level
display for audio level showing
full deflection (AF Max is at a level
with the PEAK display).
For more information, refer to the
instruction manual of the trans-
mitter.
Squelch
Easy Setup
Frequency Preset
Name
AF Out
Equalizer
Auto Lock
Advanced
Exit
Menu
Squelch
5 dB
Select the
desired setting
Squelch
7 dB
Store the setting
Menu
1 dB
Call up “Squelch”
Exit
Squelch
Frequency Preset
“Stored”
PEAK
-10
0 40
30
20
10
-20
-30
-40
AF RF
PEAK
-10
0 40
30
20
10
-20
-30
-40
AF RF
PEAK
-10
0 40
30
20
10
-20
-30
-40
AF RF
CAUTION! Danger of hearing damage and material damage!
If you switch the squelch off or adjust the squelch threshold to a very low value, loud hissing
noise can occur in the receiver. The hissing noise can be loud enough to cause hearing damage
or overload the loudspeakers of your system!
̈
Always make sure that the squelch is switched on.
̈
Before adjusting the squelch threshold, set the volume of the headphone output (see
page 14) and the audio output level to the minimum (“
AF Out ”, see page 25).
̈
Never change the squelch threshold during a live transmission.
If you adjust the squelch threshold to a high value, the transmission range will be
reduced under adverse RF reception conditions.