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System for analyzing noise signals in community antenna TV system return channel has spectrum converter with IF amplifier input connected to return channel input via filters and mixers
System for analyzing noise signals in community antenna TV system return channel has spectrum converter with IF amplifier input connected to return channel input via filters and mixers
The system has an arrangement for setting the required return channel level, receiving and displaying return channel signals and level indication/monitoring. It has a conventional frequency generator and a return channel spectrum converter with the input of an intermediate frequency amplifier connected to a return channel input via mixers and filters and its output connected to a comparator with HF signal position/amplitude adjustment capability. The system has an arrangement for setting the required return channel level, receiving and displaying return channel signals and indicating and monitoring the level. It has a conventional frequency generator and a return channel spectrum converter, in which the input of an intermediate frequency amplifier is connected to a return channel input via a low pass 0-65 MHz filter, a first mixer, a 110.7 MHz filter, a second mixer connected to a 100 Hz oscillator and a 10.7 MHz filter and its output is connected to comparator with an adjustment capability for the position and amplitude of an HF signal.
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