Thomson Licensing

Joseph Risley Perrin

Lincheng Xiu

Xiaohong Ji

A test system () for testing for missing or shorted parts within a tuner circuit includes a signal generator () for applying a harmonic-containing baseband time varying RF test signal to the tuner circuit. The tuner circuit is tuned to a harmonic of test signal. A detectorcoupled to the baseband IF output of the tuner circuit detects the voltage generated in response to the applied RF test signal. A voltage measurement device () measures voltage detected by detector to provide an indication of the gain. Significant changes in the gain indicate missing part(s) or short circuits.

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Marion, IN, United States of America

Joseph Risley Perrin