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The MSRA digital communication with the Endec is via RS232 and the EAS audio for the MSRA is derived from the “Speaker Line Output” connection of the Endec. 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. A recessed front panel “Test” switch is also provided for aiding in the setup of the audio levels.
An optically isolated open collector “Tally” output for user control applications is provided and is active when any or all of the 3 MSRA controlled stations are activated, and remains active until the end of the EAS activation.
The MSRA is transparent to program audio due to it’s loop-through design, and uses 6 high quality bifurcated gold over silver nickel contact sealed relays, one relay for each left and each right channel circuit. The MSRA also is designed to remain transparent to program audio during any power failure condition.
All station inputs and outputs are connected using large 5mm Eurostyle screw type pluggable connectors for wiring ease and connection reliability. The internal power supplies, precision regulators, precision audio distribution amplifier sections and quality components throughout assure long life and trouble free operation of the MSRA. No external power supplies (wall warts) are required.
Front panel LED indicators are provided for “Power” and “Station” left and right audio relay activation during an EAS event.
Both 2U rack mount systems and table top units are available.
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