Matrix Commands - Polycom Vortex EF2211 Programming Manual

Queries using the '?' character are straightforward. For example, ' S04GAINI1? ' might return '
S04GAINI110 ', while ' S04GAINI*? ' might return ' S04GAINI*Äää '.

6.4. Matrix Commands

Matrix commands are used for controlling parameters that exist at the crosspoints of the mixing
matrices. Typical parameters include gain and mute. Before describing the matrix commands, it is
necessary to give a description of the matrices involved. During the following discussion, it will be
helpful to refer to the figure below, which shows all the matrices with their input and output labels.
The EF2211 has three analog outputs labeled 1, A, and B. These outputs are all at line level. There
are two additional outputs: the output to the telephone interface, labeled T, and the output to the
power amplifier. The output to the power amplifier does not have a separate output in the matrix, it is