Hi and thank you for your post.
Our oscilloscopes range from 3MS/s to 1GS/s, generally we say if you have a square waveform you would need to sample 10 times quicker then that, i.e. 10kHz you would need to sample 100KS/s. So it depends on how fast the signal is for a specification of our products please have a look at the link below:
http://www.picotech.com/oscilloscope-sp ... tions.html
Hope this helps.