by JussiH » Thu May 08, 2014 11:50 pm
Those small pocket DSOs are usually no good for any serious work and are rarely recommended, but it works for very basic stuff...but if I was you, I would skip it and save up for something like a Rigol DS1052E, which is well worth the extra money.
I can tell you that AQ puts out a very clean and jitterfree 400 hz PWM signal....
If the question is to set up the ESC´s, its usually the case with SimonK´s and similar that even though they support signals up to 450 hz they dont require them and will work down to the "normal" RX radio update rate of aroudn 50 hz and lower. ESC32 supports from 40 up to 450 hz input PWM signal, so does SimonK and BLheli.
So if you get a servo tester that shows the PWM width of the signal, It can be used to calibrate ESCs that require a stick calibration routine. You dont need a special one to run "fast update" ESCs