Using the EM 9046
72 |
Digital 9000
“RF mode” – Adjusting the transmission mode
The “
RF mode
” menu item allows you to adjust the transmission mode:
“
HD (High Definition)
”: Transmission of an audio signal without audio data
compression. As a result, the audio signal remains pure and unadulterated.
In “
HD
” transmission mode, the range can be restricted compared to “
LR
”
transmission mode.
“
LR (Long Range)
”: Transmission of an audio signal whose bit rate is redu-
ced – before transmission – by an audio data compression technique
(SeDAC, Sennheiser Digital Audio Codec). This compression technique pro-
vides excellent audio quality and a large transmission range. The sensiti-
vity to interference is reduced compared to “
HD
” transmission mode.
The selection of the transmission mode depends on the result of the fre-
quency scan. For more information, refer to the chapter “Frequency scan”
– Performing a frequency scan from page 50 onwards.
“Gain” – Adjusting the input gain
The “
Gain
” menu item allows you to adjust the input gain of selected chan-
nels, independent of whether the transmitter to be synchronized supports
the adjusted value. The factory preset is
6 dB. The adjustment range is
from
6 dB to
60 dB.
After synchronization with the transmitter, the value actually adopted by
the transmitter is written back to the menu item.
“Low cut” – Setting the low-cut filter
Via the “
Low cut
” menu item, you can set the transmitter’s low-cut filter.
Possible settings: 30 Hz to 120 Hz.
You can adjust this setting independent of whether the transmitter to be
synchronized supports the adjusted value.
After synchronization with the transmitter, the value actually adopted by
the transmitter is written back to the menu item.
If you select “
line
” in the “
Cable
” menu item (see page 73), the input
gain in the “
Gain
” menu item is set to the fixed value of –6 dB.
HD (high definition)
rf mode
dB
0
gain
low cut
Hz
30
