![]() Example of setting mistake: using the scope's reference wave - Square +2V 1KHz. The mistake was setting the V/div too low and/or not matching that of 1x/10x problem. Check and see if you make the same mistake I made often when I was new with the scope: Volt/div and probe 1x/10x setting. ![]() RichardK's software doesn't restore last setting, so you are forced to change and that just may get it to the right setting. The stock software restore last setting on start up - so if the last setting is wrong, it stays wrong. If noise shows with RichardK's software, and the stock doesn't, it make me think may be the display setting. If you are seeing NO noise on Ch2 at all, I think you have a problem not related to RichardK's software. It is practically impossible for any signal to be totally noise free. I believe it to be a software artifact instead of real. One channel being noticeably less noise than the other - and mine swaps. Matchless, As I posted earlier, I have that problem occasionally at a lesser degree.
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