From Friday, April 19th (11:00 PM CDT) through Saturday, April 20th (2:00 PM CDT), 2024, ni.com will undergo system upgrades that may result in temporary service interruption.
We appreciate your patience as we improve our online experience.
I am currently designing a FlexRIO adapter module for a PXIe-7975 and need to know how much current I can draw from the +3.3V and +12V pins on the edge connector, however I can not find any documentation providing such information, can anyone help? Sorry if I am missing something obvious 😄
First thing's first, since you're asking questions around designing a custom FlexRIO adapter module, I assume you're using the FlexRIO MDK to do so - http://www.ni.com/product-documentation/7961/en/. The PDF included with the MDK specifically describes the available power draw and relevant concerns, so that should be consulted. The specifications listed for the 7975 backend are not the relevant specs in this case - that is the max power draw the backend itself can pull from the chassis backplane. Much of that power is used on the backend, with only a subset being provided to the adapter module. More details are in the MDK PDF.
Cassandra Longley Senior Technical Support Engineer - FlexRIO, High Speed Serial and VRTS