Looking at your initial post, I presume you are looking at the PicoScope 3204B.
The specifications (http://www.picotech.com/picoscope-specifications.html
) show that with 1 channel the maximum sampling rate is 500MS/s, with two channels enabled the sampling rate is 250MS/s due to the hardware implementation.
With PicoScope you specify the timebase per division and the number of samples, and PicoScope will use the driver
to determine the closest sampling interval that can be used.
With the SDK you can select the sampling rate directly and specify the number of samples to collect (the driver will determine whether it is possible to collect that number of samples and return what it can collect).
You may wish to download the PicoScope 6 and run it in Demonstration mode to see it's features - you can download it from:http://www.picotech.com/software.html
In step 1, select a PicoScope device, then in step 2, select the most recent version of PicoScope, then download the software and install it.
Alternatively, you could download and install the latest Beta version of PicoScope from http://labs.picotech.com/
. The following forum post relating to the release of PicoScope 6.7 Beta as well as a Knowledge Base article may be of interest to you:http://www.picotech.com/support/topic10729.htmlhttp://www.picotech.com/support/kb/kbfiles/PicoScopeUSBStreaming.pdf
There is an improved streaming sampling feature. With streaming mode you are not limited by the buffer memory of the PC Oscilloscope.
In PicoScope, click on the Views -> View Properties menu and observe what happens when you adjust the timebase and number of samples. You can enable up to 4 channels and set different signals of varying frequencies using the in-built signal generator.
I hope this provides suitable clarification.