Polycom Vortex EF2211 User Manual

S01AGCMAXT?
Query the AGC maximum gain on input
channel T .
S01AGCMAXTx where x is a number
between 0 and 15, depending on the current
setting of the AGC maximum gain on input
channel T .
8.7. AGCMIN -- Set Minimum Allowed Mic/Line Input AGC
Gain
This command sets the minimum gain that the AGC can apply on input channels 1 and T (the
telephone input) . For example, if AGCMIN is set to -10, then the AGC for that channel can apply a
minimum of -10 dB of gain to the input signal.
Using the wildcard character, '*', to specify the channel with this command is not supported for the
EF2211. To set or query the command, the channels must be specified explicitly (e.g.,
'S01AGCMIN1?', 'S01AGCMINT-7').
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 -15 and 0,
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
S01AGCMIN1-3
Set AGC minimum gain on input
channel 1 to -3 dB.
S01AGCMIN1-3
S01AGCMINT?
Query the AGC minimum gain on
input channel T .
S01AGCMINTx where x is a number
between -15 and 0, depending on the
current setting of the AGC minimum gain on
input channel T .
8.8. AGCRATE -- Set Ramp Rate of Mic/Line Input AGC
This command sets or queries the maximum rate at which the AGC can increase or decrease the gain
of the signals on input channels 1 and T (the telephone input) . The ramp rate is expressed in dB/sec.
Using the wildcard character, '*', to specify the channel with this command is not supported for the
EF2211. To set or query the command, the channels must be specified explicitly (e.g.,
'S01AGCRATE1?', 'S01AGCRATET3').
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 1 and 5,
respectively.

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