Autronica AutroVoice miniVES Series - ABT-Xctrline-4 - Control Card of 4 Loudspeaker Lines

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COMPACT VOICE ALARM SYSTEM
SERVICE MANUAL
6.1.2.3 ABT-xCtrLine-4 – Control card of 4 loudspeaker lines
ABT-xCtrLine-4 card provides 4 independent outputs of loudspeaker lines (A,B,C,D).
The card relays 100V signal to loudspeaker lines from individual HV audio input placed on the card’s front panel or the internal
100V bus available for all control cards.
The card allows switching between main and back-up amplier modules.
Drawing 13. ABT-xCtrLine-4 loudspeaker lines control card
Line measurements can be performed by means of two various methods:
» impedance,
» loop.
The card detects short-circuit, open-circuit and absence of elements.
c
Maximum power which ABT-xCtrLine-4 can handle is 800W for 100V line. Each output on the card can handle up
to 300W (100VLine), in the parallel connection of the A-B, C-D maximum load is 450W.
Drawing 14. ABT-xCtrLine-4 loudspeaker lines control card