Polycom Vortex EF2280 User Manual

F01AMPRIOR*2
Set microphone inputs 1-8
to gating priority 2.
F01AMPRIOR*åååååååå
F01AMPRIOR*ààååççêê
Set gating priority of inputs
1-2 to 1, inputs 3-4 to 2,
inputs 5-6 to 3, and 7-8 to
4.
F01AMPRIOR*ààååççêê
F01AMPRIOR*?
Query gating priorities for
all microphone inputs.
F01AMPRIOR*abcdefgh , where a-h are each
between à and ê depending on the current setting of
the gating priority for each channel. If this command is
issued after the example above, then the status
message will be F01AMPRIOR*ààååççêê
8.25. AMREFB -- Set Automixer Reference Bias for the Specified
Automixer
This command sets or queries the reference bias for the automixer reference mode feature of the specified
automixer. When enabled, the automixer reference feature uses the AEC reference to prevent local microphones
from gating on audio from the remote side. The
AMREFE command controls the enabled status of this feature.
The AMREFB command can be used to bias the AEC reference signal to make the automixer even less likely to
gate on remote audio.
The first argument in this command specifies the automixer number (1-2) and the second argument specifies the
reference bias in dB.
Even though this is a channel integer command, use of the wildcard character for the automixer number is not
supported.
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 20, 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
F01AMREFB16
Set reference bias for automixer 1 to 6 dB.
F01AMREFB16
F01AMREFB2?
Query current reference bias for automixer
2 .
F01AMREFB2x , where x is between 0 and 20
depending on the current setting of the reference
bias for automixer 2 .
8.26. AMREFE -- Enable Automixer Reference for Specified
Automixer
This command enables, disables, or queries the automixer referece feature for the specified automixer. When
enabled, the automixer reference feature uses the AEC reference to prevent local microphones from gating on
audio from the remote side. The AMREFE command controls the enabled status of this feature. The
AMREFB
command can be used to bias the AEC reference signal to make the automixer even less likely to gate on remote
audio.

Polycom Vortex EF2280 Specifications

General

Rack capacity	1U
Frequency range	20 - 20000 Hz
Cancellation span	270 ms
Echo cancellation	65 dB
Phantom power	48 V
Nominal input level	0 dB
Output gain	-100 - 20 dB
Output impedance	33 Ω
Maximum output amplitude	23 dB
RS-232 ports	1
Audio connections	2 x 3.5mm
Parallel ports quantity	2
Input voltage	110 - 240 V
Output current	20 mA
Output voltage	5 V
Input frequency	47/63 Hz
Power consumption (typical)	30 W
Operating temperature (T-T)	0 - 40 °C

Weight and Dimensions

Weight	1800 g
Dimensions (WxDxH)	483 x 244 x 45 mm