LCD MENU STRUCTURE
© Polycom, Inc. 31 VORTEX EF2211/EF2210 Reference Manual
LEC Suppression (Input T). Sets the amount of suppression used the line
echo canceller (LEC).
O
UTPUTS
The OUTPUT menu contains GAIN, NOM ACTIVE, and MUTE. As with the INPUT
menus, this is done on a per channel basis.
NOTE: Output T is the outgoing phone signal. This output is only available on the
EF2211.
Output Gain. Choose the gain applied to each output signal using this parame-
ter. The default setting is 0 dBu. Though the EF2211/EF2210 allows for positive
output gain, you should always try to adjust input gains to a good level so that the out-
put gain is 0 dB. If you find that you need a positive output gain from the EF2211/
EF2210, first check your input gain to make sure you are getting a good level (around
0dB). Keep the output gain at around 0 dBu. Then, for the best gain structure, use
your amplifier to raise the volume in your system.
Mute Output. Use this to mute or unmute each Output.
NOM Active. This allows you to select whether the NOM attenuator is active for
a particular output channel (Outputs 1, A, B, T). The NOM attenuator will attenuate
the output signal by 10*log
10
(NOM) where NOM is the number of open microphones
in that particular output channel. NOM is calculated based on the number of open
microphones for each signal that is in the output.
Output Delay Enable. This allows you to enable delay to each of the out-
puts.
Output Delay. Sets the amount of delay on the output. The default value is 0
ms. The range is 0 to 340.0 ms in 0.1 ms increments.
Dynamics Processing (Output T). Enables or disables compression
on Output T.
Figure 18. EF2211/
EF2210 Outputs sub-
menu
Outputs
Mute Output
NOM Attenuation
On/Off
Output Gain
Output Delay Enable
Output Delay
Dynamics Processing
(Out T)
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