With my DSO203 I have a nasty issue with frequency measurements.
When feeding a 500kHz signal into the device I am getting different period measurements and frequencies when I change timebase:
5us: 500 kHz ok
2us : 520 kHz
1us: 625 kHz
0,5us: 833 kHz
0,2us: 1042 kHz
My software is SYS_B152.HEX + APP_B253.HEX and V261FPGA.BIN
Is this a known issue or is this a bug of my device?
What can I do to get consistent measurements?
Thanks in advance!
Update: Revertion to older Firmware incl FPGA-Version and helped. Things are working now with
SYS_B151 + APP_252 and V261FPGA.BIN. Still inconsistent timings with gabanator’s firmware.