Re: Hp 8590a spectrum analyzer
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Thanks Alex , I'll try that when I get the power supply re installed tomorrow.? I was wondering how to check that. What's the correct part number for that diode pack?. Hsms 2822 or something like that.? Thanks.?
On Wed, Aug 31, 2022, 18:02 Alexander Saydakov via <sandy_saydakov= [email protected]> wrote:
Connect the input to the calibration output and turn the corrections off. Is the main tone about -20 dBm? if it is significantly lower (say, -30) then most probably the mixer diodes in the first converter are bad. The corrections try to compensate, but it is too much to compensate. As I understand, the corrections must be within a fraction of dB typically.
On Wednesday, August 31, 2022 at 02:51:02 AM PDT, Richard Cook < richardcook331@...> wrote:
You are most right. It may be better to leave it alone. But I know the power Supplies are hard to come by so I think replacing the caps with high grade ones and safety caps isn't a bad idea. Like I said I never have delt with repair of one of these animals so I may just keep in mind the noise floor and use it.?
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