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Chapter 2
DAQ System Overview
Cables and Accessories
NI offers a variety of products to use with NI 6238/6239 devices, including
cables, connector blocks, and other accessories, as follows:
•
•
•
For more specific information about these products, refer to
Refer to the Custom Cabling section of this chapter, the
Considerations
Device-Specific
for your M Series device.
Custom Cabling
NI offers cables and accessories for many applications. However, if you
want to develop your own cable, the following kits can assist you:
•
•
Also, adhere to the following guidelines for best results:
•
•
•
For more information on the connectors used for DAQ devices, refer to the
KnowledgeBase document, Specifications and Manufacturers for Board
Mating Connectors, by going to
rdspmb
NI 6238/6239 User Manual
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Cables and cable assemblies
–
Shielded
–
Unshielded ribbon
Screw terminal connector blocks, shielded and unshielded
RTSI bus cables
section of Chapter 4,
Information, for information on how to select accessories
TB-37F-37SC—37-pin solder cup terminals, shell with strain relief
TB-37F-37CP—37-pin crimp & poke terminals, shell with strain
relief
For AI signals, use shielded, twisted-pair wires for each AI pair of
differential inputs. Connect the shield for each signal pair to the ground
reference at the source.
Route the analog lines separately from the digital lines.
When using a cable shield, use separate shields for the analog and
digital sections of the cable. Failure to do so results in noise coupling
into the analog signals from transient digital signals.
ni.com/info
.
2-4
ni.com
Field Wiring
Analog
Input, and Appendix A,
and entering the info code
.
ni.com
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