Testing equipment at Hackerspace Kraków

Hackerspace Kraków got two nice analog oscilloscopes with 20MHz bandwidth from our sponsor. Initial tests using the built-in 1kHz square wave generators with provided probes showed a gloomy picture of bumpy squares that could have been caused by Who Knows What, and the picture below shows the best we could get by tuning the probes.

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Yesterday I brought my cheap Voltcraft/Hantek/Tekway DSO to see what’s going on. Turns out the main problem were our probes – using the ones from my oscilloscope we got nice squares using all three signal generators available!

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However, testing revealed that test signals provided by generators in HS oscillosopes are not 1kHz squares anymore:

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And this one is quite disturbing as well – given the same signal source – I hope it’s just the matter of using two completely different probes!

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