DM Engineering Multi Station Relay Adapter
EAS station multiplexer
This device expands the allowable controlled number of stations from a single Sage Endec to a total of four. It is a microprocessor-based, three-stereo-channel accessory that interprets the Endec audio commands to select the appropriate station or stations for EAS broadcast. The MSRA communicates with the Endec via RS-232, and the EAS audio for the MSRA is derived from the Endec speaker line output. A multi-turn, recessed front panel input gain trim potentiometer and individual multi-turn station gain controls are provided for controlling the active stereo distribution amplifier sections having balanced output levels capable of greater than +12dBm into a 600 ohm load impedance. An optically isolated open collector tally output for user control applications is provided and is active when any or all of the three controlled stations are activated, and remains active until the end of the EAS activation.
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