Polycom Vortex EF2280 User Manual

8.103. PEQIA -- Set All Parameters for Specified Parametric EQ
Input Stage
This command sets or queries all of the parameters for the parametric equalizer (EQ) filters on input channels 1-
8, and A-D . Each channel has five bands of parametric EQ that can be independently controlled.
The input parametric EQ filter parameters can be set individually via the
PEQIT, PEQIF, PEQIB, PEQIG, PEQIS,
and
PEQIE commands. The output parametric EQ filter parameters can be set simultaneously via the PEQOA
command or individually with the
PEQOT, PEQOF, PEQOB, PEQOG, PEQOS, and PEQOE commands.
When using this command, you must specify all of the following parameters.
Description Value Range Units
Channel 1-8, A-D N/A
Band 1-5 N/A
Filter Type 1-5
1 = parametric filter
2 = low shelf
3 = high shelf
4 = lowpass
5 = highpass
6 = Linkwitz-Riley lowpass
7 = Linkwitz-Riley highpass
Frequency 20 - 20000 Hz
Bandwidth 5 - 200 1/100th octave
Gain -20 - 20 dB
Slope 1 - 1.2 * Gain for shelving filters, 12 or 24 for Linkwitz-Riley filters dB per octave
Enable 0 - 1
0 = filter disabled
1 = filter enabled
The paramters are specified in the order shown and are separated by commas. The wildcard character, *, may
not be used for any of the parameters listed above. If an attempt is made to set one of the parameters outside
the valid range, the command will fail and return an error message of ERROR#002.
Not all of the parameters are valid for each of the filter types. The following table shows which parameters are
used in each of the filter types.
Filter Type Bandwidth Frequency Gain Slope
Parametric (1) Yes Yes Yes No
Low Shelf (2) No Yes Yes Yes
High Shelf (3) No Yes Yes Yes
Lowpass (4) No Yes No No
Highpass (5) No Yes No No
Linkwitz-Riley Lowpass (6) No Yes No Yes
Linkwitz-Riley Highpass (7) No Yes No Yes
When a parameter is invalid for a given filter type, the parametric EQ commands will still set that parameter,

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