Hi all, (newbie here)
Add me to the list of those interested in a time interval fine calibration module.
A question on that module, I don't see any ECL in the overlay, only HC, or is this only from the library used to create the pcb but you're looking at using fast 3.3V logic equivalents such as the AUC family or AVC or ALVC? I ask as I would have thought the 8130A and 59992 suggested by the manual would have edges much faster than HC logic? Would that have any effect on the fine cal?
While I'm here I'm wondering if anyone can help with an issue I have with my 53132A.......
I was (am) looking at a homebrew 12.4GHz frequency extension and I tried to change a few eeprom values that have been posted in a yahoo group. In replacing the eeprom with a socket I managed to corrupt (erase?) the eeprom and lost all data. I was able to recal, except for the time interval fine, and when I put in the modified values to supposedly enable the 12.4GHz module divide ratio I still get a divide by 128 no matter what value is in the 3 eeprom locations. After I recal'd those 3 locations had FF in them.
So I'm thinking one of three things, 1) when I erased the eeprom I lost some critical info, or 2) not only does the eeprom need changing but the software also needs to change to enable the 12.4GHz module or 3) there's more to it than that and the fpga also needs to change, but that seems overkill to change the divide ratio from by 128 (for the 3ghz extender) to divide by 512 (for the 12.4ghz extender). I tried all four possible code0, code1 combinations and got two which gave divide by 128 and two which gave no channel 3.
Would anyone have an eeprom dump that they could share so I can compare what I have now to what a factory eeprom should look like? My unit is a no option unit from the factory.
Has anyone had success in incorporating a non factory 12.4Ghz extender that uses a divide by 512 ratio into a no option counter?
Thanks
Greg