Not Seeing Any Signals on Certain Channels of NI 5752B

Updated Jun 8, 2018

Reported In

Hardware

  • NI-5752B
  • SMB-2145
  • SMB-2146
  • SHC68-C68-D3
  • SHC68-C68-D4

Issue Details

I'm running the getting started example for the NI 5752B and I'm only seeing signals on around half of the channels. I'm using the SMB 2145 with the SHC68-C68-D4 cable in my set up.

Solution

This behavior is happening because the SMB 2145 cable should be paired with the SHC68-C68-D3 cable. This setup is shown in figure 5 of the "NI SMB-2145/2146/2147/2148 User Guide". The image is also shown below.  

The SHC68-C68-D4 cable is paired with the SMB 2146 breakout board and when using the NI 5752B, that breakout board is used on the digital I/O pins. 

Additional Information

Because of the way the signals are routed, if you use the SHC68-C68-D4 cable with the SMB 2145, you won't see signals on about half of the channels. Specifically, you won't see signals on channels 0, 3, 7, 8, 12, 15, 16, 19, 23, 24, 28, 31. 

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