Accessories - National Instruments NI-6587 Getting Started Manual

Use a shielded 50 Ω coaxial cable with an SMA plug end to connect to the PFI 0 and
CLOCK IN connectors on the NI 6587 front panel. Use the NI SHB12X-B12X shielded cable
(NI part number 192344-01) or the NI SHB12X-H3X24 differential flying-lead cable (NI part
number 196236-1R5) to connect to the DDC connector. You can also connect the
NI SMA-2164 accessory to the NI 6587 through the SHB12X-B12X shielded cable for testing
and debugging.
If you design a custom cabling solution with the DDC connector (779157-01)
Note
and SHB12X-B12X shielded cable (192344-01), the NI 6587 pinout is reversed at
the end connector. For example, the signal shown on pin 1 maps to pin 73 at the end
connector.
The following NI cables and accessories are not properly shielded for EMC-compliant use
with the NI 6587:
• NI SMA-2164 accessory
• NI SHB12X-H3X24 differential flying-lead cable
Whether you use NI cables and accessories or design your own, terminate
Note
cables properly to avoid improper measurements caused by signal reflections,
overshoot, and undershoot.

Accessories

The NI SMA-2164 test fixture is a breakout box for differential signals. This fixture provides
an easy way to connect to other devices for testing and debugging.
The following figure shows how to connect the differential DDC connector to the
NI SMA-2164, using the NI SHB12X-B12X cable. For more information about using the
NI SMA-2164, refer to the NI SMA-2164/2165 Test Fixture User Guide.
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