Polycom Vortex EF2211 User Manual

(EQ) filters on input channels 1, A, B, and T . Each channel has five bands of parametric EQ that can
be independently controlled.
For the Linkwitz-Riley filters, the slope can either be 12 or 24 (dB/Octave).For the low shelf and high
shelf filters, the minimum value for the slope parameter is 1, and the maximum value is 1.2 times the
current value of the gain parameter. See the
PEQIG command for information on the gain parameter.
This command has the same format and restrictions as the
PEQIA command except that only one
parameter, the slope, is specified instead of all the parameters. See the
PEQIA command for more
information. To set the slope parameter for an output parametric EQ filter, use the
PEQOS command.
To set all the parameters for an output parametric EQ filter, use the
PEQOA 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
S01PEQIS1,2,1
Set the slope of the parametric EQ
on input 1 , band 2 to 1 dB per
octave.
S01PEQIS1,2,1
S01PEQISB,1,?
Query current slope setting of
parametric EQ on input B , band
1.
S01PEQISB,1,s , where s is the current
setting of the slope parameter for the
parametric EQ on input B , band 1. If the
slope parameter of this filter is set to the same
value given in the example above, then the
status message will be S01PEQISB,1,1 .
8.120. PEQIT -- Set Type Parameter for Specified
Parametric EQ Input Stage
The type parameter specifies what type of filter is executed for the specified band of the specified
input channel. The different filter types and their corresponding values are shown in the table below.
Filter Type Value of Type Parameter
Parametric 1
Low Shelf 2
High Shelf 3
Lowpass 4
Highpass 5
Linkwitz-Riley Lowpass 6
Linkwitz-Riley Highpass 7
This command has the same format and restrictions as the
PEQIA command except that only one

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