On Mar 14, 2023, at 10:07, Roberto Vegliach <roberto.vegliach@...> wrote:

?

Dear, RPG stand for "Rotary Pulse Generator".

This is the endless knob on front panel for changing parameters.

Regards.

Il Mar 14 Mar 2023, 17:57 Bruce <bruce@...> ha scritto:

Don -

Thanks - I have not played much with the 8350 plug YIGS (mostly 834X?
stuff) - good information to know.

I do find it a bit surprising though.? Reasoning is as follows,?
correct me if I'm wrong:
1) Frequency is primarily determined by main coil current
2) Remaining voltages supply the oscillator and amp (if there is one)?
- they do not vary with frequency (true ??)
3) The linearization is primarily a shaping function on the main coil current.

So I would expect that if the main coil current were within the?
expected limits and the other voltages were correct, the YIG would?
have output.? Thoughts??

Cheers and thanks for the insight.

Bruce



Cheers!

Bruce

Quoting "Don Bitters via " <donbitters=[email protected]>:

> Absolutely yes! I have been there on this issue. Even a brand new?
> one from the factory may not give an output, or a very low output?
> until it is aligned with the proper endpoint drive voltages.
>
> Don Bitters
>
>
>