Using PXIe-7891 with BNC Terminal Blocks

Updated Aug 13, 2025

Reported In

Hardware

  • PXIe-7891

Issue Details

Based on PXIe-7890/7891 Getting Started, I plan to use connectors 0, 2, and 4 on the PXIe-7891 with connecting them to BNC connectors.
Can PXIe-7891 be used with BNC terminal blocks? Are there any compatible BNC terminal blocks available?

Solution

Only cables and accessories listed in PXIe-7890/7891 Getting Started based on below screenshot are supported.
 
For Connector 0 and Connector 4, you can create own BNC to wire adapter and connect it to screw terminal connector at SCB-68 HSDIO.
For Connector 2, you can purchase BNC to SMB cable to connect to SMB-2145.
The AI- pin at SMB-2145 is shorted to AI GND so it does not support differential AI measurement.
Also, for SCB-68 HSDIO, you can solder BNC connector on the PCB to enable BNC connection.

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