Considering since buying this at an electronics surplus store, I'm surprised it at least seems like it's still in calibration. Can anyone verify that's more familiar with scopes? I'm still learning how to read it. I did find that according to the frequency counter, my sound card is more accurate at a 1KHz square, than the scopes built in generator. But not as clean. I hope I can definitely use this scope seriously and accurately.
My Mac laptop generating 1KHz.
![](http://img.photobucket.com/albums/v395/Evilweredragon/Oscilloscope%20Calibration/mac1khz2_zps250e0b2a.jpg~original)
![](http://img.photobucket.com/albums/v395/Evilweredragon/Oscilloscope%20Calibration/mac1khz_zpsd0a90778.jpg~original)
My scopes built in 1KHz generator.
![](http://img.photobucket.com/albums/v395/Evilweredragon/Oscilloscope%20Calibration/scope1khz2_zps4783ba6e.jpg~original)
![](http://img.photobucket.com/albums/v395/Evilweredragon/Oscilloscope%20Calibration/scope1khz_zps9d80de1d.jpg~original)
And just for the sake of knowing what the adjustments were, here's the settings on the scope, so you see the time base and volts/div.
Channel A is on the Mac, and channel B is on the scopes built in generator.
![](http://img.photobucket.com/albums/v395/Evilweredragon/Oscilloscope%20Calibration/scopesettings_zps78c449cd.jpg~original)