LCD MENU STRUCTURE
© Polycom, Inc. 33 VORTEX EF2211/EF2210 Reference Manual
Mixer Settings.
Bus Mixer. This command is used to assign one of the two internal automixers
to one of the EF Bus automixer groups. Setting the Bus Mixer to the same num-
ber as the automixer on another Vortex device will allow the devices to be one
large automixer. Setting Bus Mixer to 0 means that the automixer is not grouped
on the EF Bus and the automixers operate independently.
Chairman Mode. Enables or disables Chairman Mode for the automixer.
Chairman Mic. Sets the Chairman Microphone for the automixer.
Last Mic On Mode. Sets “Last Mic On” mode for the automixer.
Last Mic Number. Sets the microphone number that will remain on when
“Last Mic On” mode is set to manual. Setting this value to 0 will cause the auto-
mixer to leave the last open microphone on. The last microphone number is
specified for the automixer, but is only used in manual “Last Mic On” mode.
Local Max NOM. Sets the maximum number of open microphones (NOM)
limit for the automixer. This NOM limit is a “local” limit, meaning that this limit
applies only to the specific Vortex device that it is set on.
Global Max NOM. Sets the global maximum number of open microphones
(NOM) limit for each linked automixer. The maximum value for this command
is 64. This NOM limit is a “global” limit, meaning that this limit applies to all
linked automixers with the same Bus ID.
Off Attenuation. Sets the Off Attenuation (in dB) for the automixer. Setting
this value to 18 would result in the microphone signals being attenuated by 18 dB
when gated off. This value is set independently for the automixer.
Automixer Reference. When enabled, the echo canceller reference becomes
a muted input in the automix so that far end audio coming from the speakers does
not gate on local microphones.
Reference Bias. Adjusts how much gain is applied to the Automixer Refer-
ence signal. The higher the gain, the harder it will for local talkers to gate on a
microphone.
Channel Settings.
Automixer. This allows you to select between Mixer 1 or no automixer for the
microphone channel input 1.
Threshold Type. Sets adaptive or manual automatic gating thresholds per
input.
Gating Mode. Sets the automixer gating control mode for input channel 1.
The possible modes are Normal Gating, Microphone Forced On, or Microphone
Forced Off.
Adaptive Threshold. This allows you to determine when to gate a micro-
phone on based on an estimate of the background noise level. The default value
is to gate a channel on if it is more than 10 dB louder than the background noise
level. Values range from 0 to 100 dB. To set the adaptive threshold, scroll
through the adaptive threshold range and select the desired adaptive threshold by
pressing E
NTER.
Manual Threshold. Sets the automixer gating threshold for input channel 1.
This value is only used if the input set to Manual Gating via the T
HRESHOLD
T
YPE option.
Gate Priority. The priority of each microphone can be assigned a value rang-
ing from 1 to 4. Priority 1 microphones have priority over priority 4 micro-
phones for gating. The default is to have all microphones set to priority 1. If
Chairman Mode is enabled, all microphones including ones with priority of 1
will be gated off when the Chairman mic gates on.
Mixer Settings
(AM1)
Bus ID
Chairman Mic
Last Mic On Mode
Chairman Mode
Local Max NOM
Global Max NOM
Last Mic Number
Off Attenuation
Automixer
Automixer Reference
Reference Bias
Automixer
Channel Settings
(Inputs 1)
Automixer
Gating Mode
Adaptive Threshold
Threshold Type
Gate Priority
Manual Threshold
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