Hello,
Could someone post pictures of their calibration values. The magic number that is needed to go into calibration menu is: 111846 or 020546 or 040166
Story:
I recently bought IFR 2390A that should work. Unfortunately it was broken.
After some playing with it, and going into wrong rabbit hole: I thought that DAC is broken, because signal going into ADC board was out of range (-10V), and even embedded oscilloscope was not working. Disconnecting cable form DAC board going into ADC board was causing to plot straight line on 0V in oscilloscope mode like it should. But after confirming that DAC was working correctly (I reversed communication protocol between CPU board and DAC board. So I could control DACs independently). I found another problem.
Currently I measured batteries that are on CPU board (should done this earlier) and one of them have 0V.
Before replacing battery i looked into calibration parameters and they were random numbers. After replacing battery and configuring DAC values in SCOPE mode I have functional oscilloscope but there is so many parameters and I don't have starting point. Could someone post pictures from RAW CAL menu.