It seems that I uploaded a wrong firmware to my old Siglent SDS1202DL Oscilloscope and now it does not work properly.
I used the SDS1000CFL 2CH Firmware - 5.08.02.38 (Release Date 03.10.15 ) and unfortunately it accepted the wrong firmware.
It boots and all menus/buttons works except the most important thing.. to measure. (I can see a sinusoidal graph after boot in both channel when nothing is present connected to the device)
Anybody has the correct firmware for the SDS1202DL?
Thanks,
Evans