Polycom Vortex EF2280 Reference Manual

INTEGRATING THE EF2280 INTO YOUR SYSTEM
© Polycom, Inc. 37 VORTEX EF2280 Reference Manual
Default Settings In the default preset (Preset 0), the Bus Mixer for Automixer 1 is set to 1 and
the Bus Mixer for Automixer 2 is set to 2. This means that in the default
mode, all linked devices will work together as one complete automixer.
C ONFIGURE THE M ATRIX M IXER
The matrix mixer allows arbitrary crosspoint gains in 1 dB increments
between any input and output signal.
If you have a PC, use the Conference Composer software (See the Conference
Composer User Guide) to set the matrix parameters. If you would like to set
matrix parameters from the LCD menus, see “Matrix Menu” on page 26 for
descriptions and instructions on setting matrix mixer parameters.
B UILDING Y OUR S YSTEM WITH M ULTIPLE V ORTEX D EVICES
The following is a checklist for building a system with multiple devices:
1. Assign Inputs.
2. Assign Outputs.
3. Configure submatrix (the EF Bus).
4. Configure your echo canceller reference.
The
Instant Designer software will do these tasks for you automatically.
1. Assign Inputs Assign each audio source to an input. Remember to include the conferencing
equipment such as a Vortex Phone Hybrid or a video codec and any program
audio.
2. Assign Outputs Try to assign as many outputs as you can to one Vortex device to make a sim-
pler submatrix. Remember that Outputs 1-8 can also be used as outputs of
the matrix.
3. Configure the
submatrix.
To link multiple devices together, use the submatrix on the EF Bus to config-
ure which signals to receive from other devices that have put their signals on
the Bus.
The EF Bus The EF Bus is a high speed, low delay digital bus that includes the W, X, Y,
and Z audio busses, the P bus, as well as the echo canceller bus reference
and remote control information (for other EF devices). It can link up to 8 Vor-
tex devices. The W, X, Y, and Z buses include NOM information and can be
used for sharing microphone inputs, or for sharing mono or stereo program
information.On the EF Bus page in Conference Composer, the inputs coming
in to each submatrix labelled WB0, WB1,... WB7 correspond with the device
ID of the bus that is transmitting. The “B” denotes Bus. The submixes them-

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