1-Pin SMB, 68-pin VHDCI, 16-Channel Digital Input, 2-Channel Digital Output, NI-5752 Terminal Block—The SMA-2146 connects with the NI-5752 Digitizer Adapter Module for FlexRIO for testing and debugging. The SMA-2146 provides signal connectivity to the NI-5752 and you can connect to these signals from the labeled SMB connectors.