Hello Hernan,
You are going to need a PXI chasis along with a PXI Controller. The amount of slots in your PXI chasis will be based on how many you think you will need. If you want the system to be Real-Time (independent of computer and OS) then you can use the PXI-8186 Controller. The High Speed Voltage Output Card that I would suggest is the PXI-6733. This has 8 Analog Outputs at 16 bits and 1MS/s, so you will need two of them. Unfortunately, we do not offer any high voltage amplifiers. For more information on these PXI options as well as others, please refer to
PXI Systems
Follow this link to be able to request the catalog. Be sure to choose your appropriate country.
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Have a Great Day!