Hello Hp/Agilent Fans. I recently accuired a HP8563E that I am bringing back to life. It has a Worn CRT but I have one in transit. Otherwise working ok but I want to enter option 008 and wanted to make a Copy of the EEProm first. I used the copy EEprom function but somehow it lost some of its calibration. I have not a flat response over 2.9Ghz. I had that before and I can peak the signal I see. I would say a -10dBm signal can at Places read 2-2.5dB low until I press Tracking filter autotune then ok.
There are in the service manual a section for adjusting Offset and Slope of the YTF.
I try to follow the manual adjustment but I can´t get it to Work using a service manual from 1999. My unit is a 3410A firmware 102894. I Wonder what I do wrong. Anyone can explain me the way to adjust it correctly.
Maybe my unit is older HW and need alternative method.
73 Peter OZ1LPR
Hello, First you can not add option 008 to a unit that does not have the correct hardware on the A15 assembly for the 2 MHZ offset feature.
Second, The Offset and gain adjustments for peaking are done 200 MHz above and below each band ending. You have to put the unit into the service mode to access these adjustments in the service menu.
When you have each band peaked then store the data. However, if you may have done what you stated, the flatness data for the entire instrument may have been corrupted. You would have to perform a flatness correction routine. Then you would want to test for the DANL to ensure there is not a hardware problem of a part(s) that has excessive loss.