I am looking for the cheapest way to sample simultaneously 4 or more channels at 2Ms/s (ore more).

[timmy]

it's very important for my application both sample simultaneously and rapidly (more than 2 MHz).
I know that I can use a digital oscilloscope but it's limitate to 2 channels and to much expensive.
I'am looking for a smart and cheapest way to perform my application, if it's possible.

[Michael_S.]

Timmy,

Your best solution is to use a PCI-6110 simultaneous sampling board which can sample each channel at a rate up to 5 MS/s.

If you are using the PXI platform, you can use the PXI-6115 which can sample each channel up to 10 MS/s simultaneously.

Both of these boards can be found in the National Instruments catalog available online at www.ni.com