NI 6583R User Guide and Specifications
12
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Connecting Cables and Accessories
Use an NI SHC68-C68-D4 shielded cable (NI part number 781013-01) for connections to the DDC A
connector. The NI SHC68-C68-D4 is designed for single-ended, high-speed digital signal transmission.
The cable is shielded, with individual microcoaxial 50
Ω
lines for each signal.
Use an SHB12X-B12X shielded cable (NI part number 192344-01) for connections to the DDC B
connector. This cable is designed for differential, high-speed digital signal transmission.
Caution
The NI 6583R must be operated with shielded cables and shielded accessories to ensure
compliance with the Electromagnetic Compatibility (EMC) requirements defined in the
section of this document. Do not use unshielded cables or accessories unless they
are installed in a shielded enclosure with properly designed and shielded input/output ports and
connected to the NI 6583R using a shielded cable. If unshielded cables or accessories are not
properly installed and shielded, the EMC specifications for the NI 6583R are no longer guaranteed.
The following NI cables and accessories are
not
properly shielded for EMC-compliant use with the
NI 6583:
•
NI CB-2162 single-ended digital I/O accessory
•
NI SHC68-H1X38 high-speed digital flying-leads cable accessory
•
NI SMA-2164 prototyping accessory for NI 656X
•
NI SHB12X-H3X24 differential flying-lead/LA cable for HSDIO
Using Accessories
Note
Whether you use NI cables and accessories or design your own, you should properly terminate
cables to avoid improper measurements caused by signal reflections, overshoot, and undershoot.
Single-Ended Accessories
NI recommends using the NI CB-2162 single-ended digital I/O accessory to access the signals on the
68-pin DDC A connector and to terminate the DIO channels. The NI CB-2162 also provides a platform
for circuit prototyping and DUT testing. The NI CB-2162 is specifically designed for use with
single-ended devices. For more information about the NI CB-2162, refer to the
NI CB-2162 User Guide
.
NI also offers the NI SMB-2163 breakout box for National Instruments single-ended digital waveform
generator/analyzers. The NI SMB-2163 offers coaxial SMB connectors for each channel on the DDC A
connector, providing an easy way to connect to other devices for testing and debugging. For more
information about the NI SMB-2163, refer to the
NI SMB-2163 User Guide
.
