Thanks everyone for your replies. I had an idea that the low resolution was a compromise against bandwidth, so thanks for the confirmation. When I started out dabbling with electronics in the 1960s, I built a scope from a Practical Wireless design, which had a 2 inch tube and a whole 100kHz bandwidth :) It survived many years of service. I do actually have a bitscope. It's interesting for what it is, but with no proper attenuator, it's not terribly useful. The vertical resolution is poor enough to make it pretty useless for checking things like cross-over distortion. I've look araound for 'real' scopes and the best (at the top of my price limit) my price range seems to be Siglent Technologies SDS1202X-E. It's still only 8bit but the traces they show look better than most - presumably due to clever fft stuff. This is also very close to the price of a new CRT scope - I wouldn't trust buying a S/H one. For a start, you've no idea of condition of the CRT until you switch it on. Back to possibly using a soundcard, I would be thinking of using my KA6, and put a fairly simple buffer on the front. I'm not concerned about AC coupling. I can get better results for DC with a millivoltmenter (of which I have two!). I have tried Xscope, but it doesn't seem to see a soundcard at all, Not eveing the crappy on-board one :( -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx https://lists.linuxaudio.org/listinfo/linux-audio-user
