Polycom Vortex EF2211 User Manual

This command is a channel integer command. See Section 6.3 and Section 6.2 for more information
on this type of command. The minimum and maximum values for this command are 0 and 8,
respectively.
This command is saved to non-volatile memory only as part of a preset. The state of this command
will be restored after power-up only if a preset is saved and that preset is set to be the power-on
preset.
Example Description Status Message
S01AMBUSID12
Configure the automixer to be part
of the Bus Automixer having Bus ID
2.
S01AMBUSID12
S01AMBUSID10
Configure the automixer to be part
of the Bus Automixer having Bus D
0. This means that the automixer is
not part of any Bus Automixer.
S01AMBUSID10
S01AMBUSID1?
Query the current Bus ID of the
automixer.
S01AMBUSID1x , where x is a number
between 0 and 8 indicating the current Bus
ID of the automixer.
8.14. AMCHAIR -- Enable Chairman Mode for Specified
Automixer
This command enables, disables, or queries the chairman mode feature for the specified automixer.
The first argument in the command specifies the automixer number (always 1 for the EF2211) and the
second argument specifies whether chairman mode should be enabled, disabled, toggled, or queried.
Even though this is a channel boolean command, use of the wildcard character for the automixer
number is not supported.
This command is a channel boolean command. See
Section 6.3 and Section 6.1 for more information
on this type of command.
This command is saved to non-volatile memory only as part of a preset. The state of this command
will be restored after power-up only if a preset is saved and that preset is set to be the power-on
preset.
Example Description Status Message
S01AMCHAIR10
Disable chairman mode for the
automixer.
S01AMCHAIR10
S01AMCHAIR11
Enable chairman mode for the
automixer.
S01AMCHAIR11
S01AMCHAIR1?
Query current setting of chairman
mode for the automixer.
S01AMCHAIR1x , where x is 0 or 1
depending on the current setting of chairman
mode for the automixer.

Polycom Vortex EF2211 Specifications

Power

input voltage	110-240 VAC
frequency	47-63 Hz
power consumption	25 W
phantom power	24 V

Connectors

RS-232	DB9F
EF Bus In/Out	RJ45
Telephone Line/Set	RJ11
Control/Status	DB25F
Audio	3.5mm quick connect terminal blocks

Audio Specifications

microphone input	-30 dBu to +0 dBu
line inputs	-20 dBu to +0 dBu
line outputs	-20 dBu to +0 dBu
loudspeaker output	10 W, 4-16 Ohms
input impedance	10 k Ohms
output impedance	50 Ohms
headroom	20 dB
signal to noise ratio	85 dB
frequency response	20 Hz - 22 kHz

Echo and Noise Cancellation

total cancellation	65 dB
convergence rate	40 dB/second
noise cancellation	0-15 dB
echo cancellation	40 dB, total >65 dB
convergence	30 dB/second
cancellation span	32 ms
acoustic echo cancellation span	270 ms

Operating Environment

operating temperature	0 °C - 40 °C
status outputs	5 V, 20 mA each

Weight and Dimensions

width	483 mm
length	244 mm
height	45 mm
weight	1.8 kg
shipping weight	2.5 kg