Polycom Vortex EF2280 Reference Manual

INTRODUCTION
VORTEX EF2280 Reference Manual 4 Technical Support: 800.765.9266
only ones on the market to feature this patented technology. Noise cancella-
tion filters out ambient background noise such as noise from heating, ventilat-
ing and air conditioning (HVAC), LCD projectors, and road noise. Our noise
cancellation technology is not a noise gate. It actually removes noise. There-
fore, it enhances the operation and improves the sound quality of an auto-
mixer, for example, by preventing it from bringing the noise level up and
down when microphones are gated on and off. By cancelling the noise picked
up by each microphone, the overall signal to noise ratio (SNR) is preserved.
The result is crystal clear speech over a greater decibel range than any other
echo canceller. That means reduced listener fatigue and a higher quality audio
conference.
Product
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P RODUCT F EATURES
Product • Front panel LCD for controlling and configuring the product without a
computer
• 5-band equalizer on all Inputs and Outputs (Parametric, High/Low Pass,
High/Low Shelf)
• Echo cancellation on Inputs 1-8
• Noise cancellation up to 15 dB
• Two internal automatic microphone mixers for Inputs 1-8
• 27 x 18 full cross point matrix mixer with expansion bus
• Internal signal generator for calibration mode and noise masking applica-
tions
• 2 year warranty
AEC • 24 bit resolution
• 48 kHz sampling rate, >20 kHz bandwidth
• 270 ms AEC tail length
• 40 dB/sec convergence rate
• Can function in rooms with more than 10 dB of room gain
Inputs and
Outputs
• 8 microphone/line level inputs with phantom power on each input
• 48 VDC Phantom Power
• 4 line level auxiliary inputs with nominal level of 0 dBu
• 12 digitally controlled analog trimpots for the 12 input signals
• 12 line level outputs with default nominal level of 0 dBu
• Automatic Gain Control (AGC) on Inputs 1-8, A-D.
• Phoenix connectors for audio input and output

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