Function card 4 IN / 8 OUT Audio / RS485
4 loudspeaker line control card
- EST-xCTRLN-4 provides 4 independent speaker line outputs (A, B, C, D). Card allows to switch between main and spare amplifiers.
- Line measurement methods can be made by: Impedance, Loop or End of Line Module (EOL ).
- The measurement method is selected from the software configuration.
- EST-xCTRLN-4 provides fault detection, opening , ground leakage and surveillance amplifiers on common 100 V Buses.