LSDDC Power Amplifier Interface Module for the V400
The LSDDC is an amplifier interface card for use with the M100, M200 and M400 Class-D Amplifiers in a V400 Amplifier Mainframe for Voice Alarm and Public Address applications.
Uniquely, it enables two circuits (A&B) to be fed from a single amplifier while still maintaining BS5839 Pt 8 compliance.
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Amplifier health monitoring is achieved.
Subsonic surveillance tone, automatic control of changeover to standby amplifier, loudspeaker line earth leakage monitoring, and loudspeaker line ‘End Of Line’ (EOL) monitoring. Relays in series with each output facilitate isolation of faulty speaker circuits.