TECHNICAL SPECIFICATIONS
© Polycom, Inc. 51 VORTEX EF2280 Reference Manual
T
ECHNICAL
S
PECIFICATIONS
Dimensions 19” (483 mm) W x 9.6” (244 mm) L x 1.75” (45 mm)
H (one rack unit)
Weight 4 lb. (1.8 kg) dry
5.5 lb. (2.5 kg) shipping
Connectors RS-232:
EF Bus In/Out:
Control/Status:
Audio:
DB9F
RJ45
DB25F
Mini (3.5mm) quick connect terminal blocks
Power External supply (provided)
Input voltage of 110-240 VAC; 47-63 Hz;
power consumption 30 W
Inputs
Phantom Power 48 V DC, software selectable
Audio Input Gain 0 to 30 dB Mic/lone inputs in 1 dB steps;
software adjustable
Mic/Line switch gain 33 dB
Maximum input amplitude +19 dBu, 1% THD + N
Nominal level 0 dBu (0.775V rms)
Equivalent input noise <-124 dBu, 20 -20,000 Hz
Input Impedance 10 kOhms
Input EMI Filter Pi filter on all audio inputs
Outputs
Output Gain -100 to 20 dBu in 1 dB steps, software adjustable
Maximum output amplitude +23 dBu, 1% THD + N
Nominal output level 0 dBu (0.775 V rms)
Output Impedance 33 Ohm, each leg to ground
Output EMI Filter Pi filter on all audio outputs
System*
Frequency response 20-20,000 Hz, + 0.2/-0.3 dB
Idle channel noise <-100 dB FS “A” weighted, 20 - 20,000 Hz, 0 dB gain
Dynamic range >100 dB FS “A” weighted, 20 - 20,000 Hz, 0 dB gain
Linearity 0 dB FS to -110 dB FS +/- 1 dB
THD+N < -90 dB FS
Common Mode Rejection
Ratio
< -61 dB, 20 - 20,000 Hz, no weighting
Cross talk < -104 dB, 20 - 20,000 Hz, channel-to-channel
Latency Mic/Line inputs to outputs: 13 ms, processing enabled
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