Signal Hound has really raised the bar on these instruments with their new VSG25A vector signal generator (Figures 1 and 2), introduced recently at the International Microwave Symposium in Phoenix ...

If the phone went to sleep the signal generator application stopped outputting the waveform! In order to use the signal generator, the phone has to be kept from going to sleep! This is a slightly ...

Of course, you could use signal generators and scopes, but in those days you weren’t as likely to have those. Heathkit, of course, had their own version.

Signal generators use a simple Thévenin equivalent circuit (Fig. 1) under dc or low-frequency or short-cable conditions. 1. An AFG’s output uses a simple Thévenin equivalent circuit.