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Re: 8662A output oddity


 

Hi Jim
I have not seen anything like this on my 8663A (not exact same instrument, but very similar).
These generators has a are very modular build, with lots of cables between the boards. So it should be easy to find the source of the noise.?
Get the service manual, and follow the signal, by measuring the signal between each model in the signal path, until you find the bad module/board.

Had to do this to find what board generated spurs at certain temperatures in my generator.?

Br,
Askild


On Mon, 18 Mar 2019, 12:43 Jim Miller, <hpagilent@...> wrote:
On Mon, Mar 18, 2019 at 01:31 AM, jfphp wrote:
There is something wrong with the settings of the SA : VF is too narrow compared with the BW filter. Try with auto for all settings.
All settings on the SA were set to auto. This is the "full band" view of the 8569B for the 0.1-1.7GHz band.?

The problem is not with the SA, the problem I am asking about is in the 8662A: the 8662 generates tremendous broadband noise as it sweeps across 1024.8 MHz as shown in the pictures. At *all* other frequencies it generates a very pure tone as expected.

73, Jim N8ECI

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