Polycom Vortex EF2280 User Manual

W Submatrix
● Inputs: WB0-WB7 (with one invalid)
● Outputs: WM0-WM2
X Submatrix
● Inputs: XB0-XB7 (with one invalid)
● Outputs: XM0-XM2
Y Submatrix
● Inputs: YB0-YB7 (with one invalid)
● Outputs: YM0-YM2
Z Submatrix
● Inputs: ZB0-ZB7 (with one invalid)
● Outputs: ZM0-ZM2
For the P signal bus, there is an 8 x 2 matrix that allows the user to define up to two mixes of the P signal bus.
This matrix has a full 8 inputs since the EF2280 does not transmit on the P bus. The inputs and outputs for the 8
x 2 P bus matrix are as follows.
P Submatrix
● Inputs: PB0-PB7
● Outputs: PM0-PM1
The crosspoint gains on all outputs are user adjustable. The "M" in the output labels of the submatrices indicates
that the signals are being fed into the Main Matrix.
The main matrix consists of the following inputs: analog inputs 1-8 and A-D, the signal generator (SG), the
outputs of the EF Bus submatrices PM0-PM1, WM0-WM2, XM0-XM2, YM0-YM2, and ZM0-ZM2. This is a total of
27 inputs.
The main matrix consists of the following outputs: analog outputs 1-8 and A-D, AEC reference signals R1 and R2,
and the EF Bus outputs W, X, Y, and Z. There is no P output since the EF2280 does not transmit on the P bus.
This is a total of 18 outputs.
The matrix commands can adjust two types of parameters: integer and boolean. We will introduce the matrix
commands by using the MGAIN command as an example. This is an integer matrix command that is used to set
the gain (in dB) at any of the crosspoints in the main matrix or EF Bus submatrices.
Matrix commands are similar to channel commands except that instead of specifying a single channel, it is
necessary to specify a crosspoint (or range of crosspoints). In order to specify a single crosspoint, you use the
input and output labels discussed in this section. The first label always specifies the input to the matrix and the
second label always specifies the output of the matrix. For example, to set the gain of the crosspoint (1, A) to -3
dB, you would send 'F04MGAIN1,A,-3 ' which sets the gain at the crosspoint to -3 dB. In this case, a status
message will be generated similar to 'F04MGAIN1,A,-3 '.
It is also possible to use the wildcard character ('*') to specify ranges of crosspoints with the matrix commands.
The only restriction is that you can only use a wildcard to specify the input or output, but not both

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