Teardown & Repair of an Analog Signal Generator #EE

The Signal Path repairs an Agilent E8257D PSG analog signal generator.

The instrument does provide an RF output signal. However, there is also a large DC offset voltage present at the output RF port which changes depending the frequency band. The DC voltage is present even when the output RF signal is disabled. Furthermore, the OCXO of the instrument is defective and does not produce a 10MHz output signal.

See more in the video below and on the blog post.