Polycom Vortex EF2210 Program Manual page 14

these matrices. The inputs and outputs for the 7 x 3 matrices are as follows.
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 EF2210 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, A, and B, 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 18 inputs.
The main matrix consists of the following outputs: analog outputs 1, A, and B, AEC reference signal
R1, and the EF bus outputs W, X, Y, and Z. This is a total of 8 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