[Test-Equipment] RE: [hp_agilent_equipment] HP 8672A odd problem.

[John Miles]

How about the PD's reference and VCO inputs?  My bet's on the YIG or tuning
driver circuit, or one of the supplies associated with them.

-- john KE5FX


>
> Synthesizer lock on all frequencies but has about a 10 KHz FM signal on
> most frequencies.  Using a scope on the output pins of the Phase detector
> chip shows the expected pulses but  about a ten KHz amplitude
> modulation on
> the pins.  Powwersupply looks clean.  Chip jhas been replaced.
> Anyone seen
> this before?
>
>