Polycom Vortex EF2280 Reference Manual

INSTALLATION
VORTEX EF2280 Reference Manual 14 Technical Support: 800.765.9266
Terminating the
EF2280
The EF2280 with the stacked audio connectors is self-terminating so if you are con-
necting multiple EF2280s, the EF Bus does NOT need to be terminated. EF2280 with
the inline audio connectors are not self-terminating and require external audio termi-
nators.
F ACTORY D EFAULT S ETTINGS (P RESET 0)
The following is a list of the factory default settings of the EF2280. Since the
microphones and other equipment in your application may have different
nominal levels, you can start with a F
ACTORY PRESET (Presets 0-15), change it
to match your environment and then save it within the EF2280 as a U
SER PRE-
SET (Presets 16-47). Once you’ve saved a USER PRESET, set the POWER ON PRE-
Figure 7. Legacy Vortex EF2280 products (SKU: 2200-82280-xyz) require an EF
Bus terminator when linked at either end of a Vortex chain. EF2280’s that have
their audio input and output connectors stacked (2200-12280-xyz) have a built-in
terminator and do not need an external terminator when linked together.
Vortex EF2280
Vortex EF2280
Legacy Vortex EF2280
MIC/LINE INPUTS LINE INPUTS
LINE OUTPUTS
12345678ABCD
12345678ABCD
POLYCOM VORTEX EF2280
R
RS-232 PIN 2: TXD, PIN 3: RXD, PIN 5: GROUND, PIN 7: CTS, PIN8: RTS
MIC/LINE INPUTS LINE INPUTS
LINE OUTPUTS
12345678ABCD
12345678ABCD
POLYCOM VORTEX EF2280
R
RS-232 PIN 2: TXD, PIN 3: RXD, PIN 5: GROUND, PIN 7: CTS, PIN8: RTS
MIC/LINE INPUTS LINE INPUTS
LINE OUTPUTS
12345678ABCD
1234 5678ABCD
POLYCOM VORTEX EF2280
R
RS-232 PIN 2: TXD, PIN 3: RXD, PIN 5: GROUND, PIN 7: CTS, PIN8: RTS
Cat-5 cable
Cat-5 cable
No Terminator Needed
Terminator Needed
...
Cat-5 cable

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