EXT-DEM-IN

The EXT-DEM-IN input must be used if an external demodulator is to be connected. The minimum input level is TTL level (LO = 0 V, HI = +5 V) and the maximum is RS-232C level (LO = -12 V, HI = +12 V). Note that utilizing this facility will disable certain W51PC functions. Thus this input should be employed for special purposes only.