What Are the Accessories That Are Compatible With PCIe-6738?

Updated Apr 10, 2025

Reported In

Hardware

  • PCIe-6738
  • BNC-2110
  • SHC68-68-A2

Driver

  • NI-DAQmx

Issue Details

I am upgrading my PCIe-6723/6722 to the PCIe-6738. However, my existing wiring is giving me unexpected results. The AO0 from the PCIe-6738 board comes out of AO15 on the BNC-2110 instead of AO0. What is the pinout of the PCIe-6738 and what are the accessories does it need.

Solution

The pinouts for the old and new versions of the AO series devices are different. The AO0 in NI 6723/6722 is located at pin 22, but it is at pin 10 in PCIe-6738 as shown in the pinouts below and in the NI 6711/6713/6722/6723/6731/6733 Feature Guide.

 

NI 6723.png         PCie-6738.png


For new 67xx Models, it is recommended that you refer to the Cable and Accessory Compatibility Tables of 67xx Models : DAQ Analog Output Cable and Accessory Compatibility. According to the table, it is recommended to use the SHC68-68-A2 cable and SCB-68A/SCB-68 terminal block with the PCIe-6738. You can also use TBX-68, CB-68LP, or CB-68LPR screw terminal block.

If you want to integrate the PCIe-6738 into a NI 6723 cabling where you can control the terminal block's AO0 through PCIe-6738's pin 22, you will need to use it with the NI 6738 adapter. For further information, you can refer to Appendix B of the NI PCIe/PXIe-6738/PXIe-6739 Feature Guide. Please take note that the NI 6738 is not compatible with the BNC-2110 because NI 6738 does not support it as stated in the Known Limitations and Issues List of the compatibility page above.
 
For older NI 6711/673x AO devices, the BNC-2110 terminal block can be used with the SH68-68-EP or R6868 cable. However, this is only applicable to the NI 6731 and NI 6733 and not the NI 6738.

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