Irish,
The CB-2162 was designed for the Single Ended HSDIO devices (NI 654x,
NI 655x). It does not have the correct connectivity to work with
the Differential NI 656x family of devices. The SMA-2164 will be
the connectivity solution that will work best with your PCI 6561.
This connector block differentially routes each pair to individual
coaxial SMA connectors allowing for the highest signal integrity.
For more information on the SMA-2164 please refer to:
http://sine.ni.com/nips/cds/view/p/lang/en/nid/201705
Also, the user documentation for the SMA-2164 is shipped with NI HSDIO driver and can be found at:
Start Menu\Programs\National Instruments\NI-HSDIO\Documentation\Accessories\NI SMA-2164 User Guide
Ryan M
