Switch Matrix IF 8 x 8

The Elber Commutation matrixes (IF-8x8) is modular: there is a "plug-in" module for every output channel. Every module has two symmetrical outputs, de-coupled between them, and can select and present in output one of the IF signal available at the 8 inputs.
The selection can be local or remote controlled through an input audio codec (input AUDIO IN). The delay between the command and the commutation is less than 0.5 seconds.
Every output module has a display, indicating the number of the selected IF input.
The commutation is protected: the presence of noise or disturbance on the input lines does not induce spontaneous, incorrect commutations. Therefore, these lines can be assigned for other services when there is no need of commutation.
The matrix has a buffer memory: when the matrix is switched on again after an interruption, the last selection will be restored.
The separations between the various IF output channels is at least 55dB and the variations in IF level due to the commutation is less than 1dB.
Every matrix has its own address and can thus be programmed independently from the other matrixes connected to the same audio command lines; the amount of matrixes (cluster) addressed through the same audio line is 32.
A single encoder that generates an appropriate audio tone can do the setup of the programming of a matrix cluster; this tone can reach the matrixes through an audio channel of the microwave radio links.
The programming occurs in two phases:
- During the "preset" phase, the new configuration of the matrix is obtained and memorized, but there is no commutation yet, so the used configuration remains unaltered.
- When all the present matrixes are preset, a well-timed code is sent by the encoder, upon which, all matrixes start to function in the preset configuration (second phase).