SVID (and SVI3) Pattern Generator

[AaronTestforce]

Hi!

I am trying to create a pattern generator so I can prompt my DUT via SVID/SVI3 and observe its response, so ideally this would be a c-Series (PXI is acceptable) solution to pair with the appropriate Analog Input modules.  We have two potential applications...

SVI3 digital I/O.  We implement this with a 4-wire SPI device today.   It has to run at about 25-50MHz.  No particular drive strength required if it can driver a reasonable length of wire at 50MHz. 

SVID digital I/O.  We also use a 4-wire device to implement this. But this is open-drain, running at 25-50MHz, with a 50 ohm pull up.  That forces a rather strong driver.  We assume we’ll need a special driver for this, but it would be great if an off the shelf driver can drive this.

Does NI have a solution here?  Can we use the NI-9401 and cRIO similar to what's described here?

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z0000019VSSSA2&l=en-US

[santo_13]

• What is SVID / SVI3? google came up with nothing useful.
• Do you need 50MHz SPI CLK rate?
• 50MHz at long wires is not logical, as you're dealing in the RF region
• You need very good short co-ax cables to achieve 50MHz Clock rates
•  The fastest DIO c-series card can only support 18MHz (55ns)
  
• If you're willing to go the PXI route, you can use any of the FPGA cards or PXIe-6570/6571 - these can go easily to 50MHz (but you need to be an electrical expert to get the cabling right to support proper data transfer at 50MHz)