Archives - No-modulation detection with save input and relays
CSS203 affords the control of the audio modulation presence. Inserted on a stereo audio link, it allows the monitoring of two unsimultaneous balanced stereo sources to one balanced stereo output. It includes two sections: the first one controls the modulation presence, and the second controls the phase between the left channel and the right channel.
If there is a problem, the CSS203 automatically swings on an external save source according to an adjustable delay. The swing back delay is also adjustable.
In alarm mode, the CSS203 sends several signals to display the started up alarm type (blank modulation or phase error), and to start save broadcast machines up.
Besides, thanks to its design (relay commutations), the CSS203 is entirely transparent about the modulation (any noise, any distortion signal, and allows the input flow during the power off.
CSS203 would be used in radio broadcasting stations, for example, as a backup to the broadcast in case of the main modulation disconnection. It would preferably be situated at the end of a broacasting installation or just after the satellite receiver for the regional disconnections in local stations.