@lohikarhu734 9 minutes ago I see a straight cable connection to the scope...makes me a bit nervous about impedance match, or compensation....I set to 1080p, and looked at the scope settings, and that input is set to 1 M Ohm! With a straight cable, you have no compensation at that input, so the square wave and higher frequencies are not reliable...you should put a reasonable load on the generator output, like 1 k Ohm, and ise your scope probe, properly compensated! With this setup, all bets are off for clean waveforms! Can't blame the generator if the scope probing is incorrect ... I know itps a pain in the neck, but maybe you could redo the >1 kHz, and edit that in. (BTW, in case someone cares, I've been a senior scope (and other) AE at Tek, Agilent and R&S)
I tested it with also impedance match towards the end of the video with a 50 ohm terminator and also did a separate test with the scope internal 50 ohm terminator. Only did the 1 M ohm impedance at the beginning but performance didn’t change much when loaded correctly. Yes your correct with no compensation capacitor you get harmonic loss at higher frequencies. I did this on purpose but I did load it at the end I did three separate tests in video. This generator prefers a higher impedance as if loaded to much operational amplifiers start to clip but is fine for audio. Actually function generator performance was decent and did better than expected. What I did fail to do was do the 1 k ohm and 50 K ohm loading as most will be using this likely for audio and most decks when doing calibration requires a 50k ohm especially Pioneer reel to reel decks and etc. I actually have cables made with the resistors, just forgot to. I may revisit this generator and use it for a calibration loaded and compensated correctly as have a few Pioneer decks have to service.
@lohikarhu734
9 minutes ago
I see a straight cable connection to the scope...makes me a bit nervous about impedance match, or compensation....I set to 1080p, and looked at the scope settings, and that input is set to 1 M Ohm! With a straight cable, you have no compensation at that input, so the square wave and higher frequencies are not reliable...you should put a reasonable load on the generator output, like 1 k Ohm, and ise your scope probe, properly compensated!
With this setup, all bets are off for clean waveforms!
Can't blame the generator if the scope probing is incorrect ...
I know itps a pain in the neck, but maybe you could redo the >1 kHz, and edit that in.
(BTW, in case someone cares, I've been a senior scope (and other) AE at Tek, Agilent and R&S)
I tested it with also impedance match towards the end of the video with a 50 ohm terminator and also did a separate test with the scope internal 50 ohm terminator. Only did the 1 M ohm impedance at the beginning but performance didn’t change much when loaded correctly.
Yes your correct with no compensation capacitor you get harmonic loss at higher frequencies. I did this on purpose but I did load it at the end I did three separate tests in video. This generator prefers a higher impedance as if loaded to much operational amplifiers start to clip but is fine for audio.
Actually function generator performance was decent and did better than expected. What I did fail to do was do the 1 k ohm and 50 K ohm loading as most will be using this likely for audio and most decks when doing calibration requires a 50k ohm especially Pioneer reel to reel decks and etc. I actually have cables made with the resistors, just forgot to. I may revisit this generator and use it for a calibration loaded and compensated correctly as have a few Pioneer decks have to service.
I see a straight cable connection to the scope...makes me a bit nervous about impedance match, or compensation.