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Author Topic: HP Agilent 856xx SA Marker Signal Generation  (Read 561 times)

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Offline SoundTech-LGTopic starter

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HP Agilent 856xx SA Marker Signal Generation
« on: January 11, 2022, 12:02:47 am »
Anyone know where the marker display signals are generated in these spectrum analyzers? My guess is that they are digitally generated on the controller board.
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Offline SoundTech-LGTopic starter

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Re: HP Agilent 856xx SA Marker Signal Generation
« Reply #1 on: January 12, 2022, 04:15:35 pm »
...and the correct answer is:

Yes!  Marker display is generated on the Controller Board A2. If you are having Marker display issues (tail on marker), bring up the CRT adjustment screen. It should look exactly as the manual shows. Mine had the Digital X lines in a pretty big X, they are supposed to be parallel. The DGTL X GAIN pot was misadjusted AND intermittent. Cleaned, and adjusted again, problem resolved.
« Last Edit: January 12, 2022, 08:02:37 pm by SoundTech-LG »
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