Polycom Vortex EF2280 User Manual

This command sets or queries the status of the Automatic Gain Control (AGC) algorithm on input channels A-D .
This command was introduced in firmware version 2.5.0.
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
F01LAGCB1
Enable AGC on input channel B.
F01LAGCB1
F01LAGCA0
Disable AGC on input channel A.
F01LAGCA0
F01LAGCC2
Toggle AGC state on input channel C .
F01LAGCCx , where x is 0 or 1 depending on the
current state of the AGC on input channel C .
F01LAGCD?
Query AGC state on input channel D .
F01LAGCDx , where x is 0 or 1 depending on the
current state of the AGC on input channel D .
F01LAGC*1
Enable AGC on input channels A-D.
F01LAGC*1111
F01LAGC*0
Disable AGC on input channels A-D.
F01LAGC*0000
F01LAGC*2
Toggle AGC state on input channels A-D.
F01LAGC*abcd , where a-d are each 0 or 1 depending
on the current state of the AGC for each of the four line
input channels.
F01LAGC*?
Query AGC state on input channels A-D.
F01LAGC*abcd , where a-d are each 0 or 1 depending
on the current state of the AGC for each of the four line
input channels.
8.58. LAGCLINKAB -- Enable or Disable Stereo AGC Linking on
Inputs A and B
This command links the line input AGC of inputs A and B into a stereo pair. The overall volume level of the stereo
signal will be analyzed, and the same gain will be applied to both channels.
This command has some side effects on the way the other line input AGC commands work. When LAGCLINKAB
is first enabled, the settings for
LAGC, LAGCMAX, LAGCMIN, and LAGCRATE on channel A will be copied to
channel B. The original settings for channel B will not be restored after LAGCLINKAB is disabled.
Acknowledgements will be sent for any changes to channel B. From then on, any changes for these commands
for either channel A or B will be set for both channels, and acknowledgements will be sent for both channels.
This command is a boolean command. See
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
F01LAGCLINKAB1
Enable stereo AGC linking on inputs
A and B.
F01LAGCLINKAB1

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