Hello,
It's been a long while since my last post on the K3330 cal issue.
Last week the LCZ unit went a bit crazy and showed some weird values, even for simple components like a resistor or ceramic cap.
After turning it off for a while, I turned it on again and everything seemed to get back to normal. However, I found out that some values were significantly off the expected readings.
I used some high precision resistors, and the outcome is that most of the readings are off by more than 10%.
I therefore decided to work on the calibration issue, and found an ancient PC laying around, installed the ISA PCIIA card that I ordered for such purpose a long time ago, configured IRQs, DMA and base I/O address, ending up with an apparently working GPIB link.
Bad news is: when running the CAL.EXE program, it quits giving a "Overflow in line No line number in module CAL at address 1945:033B. Hit any key to return to system".
No matter what I do, the outcome remains the same, ie: turning on/off the LCZ before running CAL, shorting the CAL terminal to ground or else, quite frankly, I am a bit disappointed to have a failing .exe become a show stopper.
I do not feel like the exe is corrupted, so it looks like there is an obscure reason why this message pops up.
I will spend some more time figuring out what is going on, but I am no PC assembly expert at all, so chances are that it will not work.
I will keep you posted in case this info is useful for people who posted on this thread.
Regards!