Nachbar-Kanal-Selektivitätssignalgenerator

摘要

In an adjacent channel measurement system, a desired channel signal and an adjacent channel signal are generated using a single signal generator (12). The output from this generator is modulated with a signal from an offset oscillator (14) to produce a carrier and a sideband signal, one in each channel. The ratio of the carrier amplitude to the sideband amplitude is set by the system's modulation index, which is controlled by an audio attenuator (32) on the output of the offset oscillator.