Instruction manual Digital 9000 System

Using the EM 9046
82 | 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
reduced – 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 sensitiv-
ity 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 of all 8 frequency ranges from page 56
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.
If you select “line” in the “Cable” menu item (see page 83), the input
gain in the “Gain” menu item is set to the fixed value of –6 dB.
HD (high denition)
rf mode
dB0
gain
low cut
Hz30