Custom Cabling; Field Wiring Considerations - National Instruments NI 6711 User Manual

Chapter 1 DAQ System Overview

Custom Cabling

Note When the NI DAQCard-6715 is in the upper PCMCIA slot, you can maintain access
to the adjacent slot by using an inverted VHDCI connector.

Field Wiring Considerations

Analog Output Series User Manual
Follow these guidelines if you want to develop your own cable.
• Route the analog lines separately from the digital lines.
• When using a cable shield, use separate shields for the analog and
digital halves of the cable. Failure to do so results in noise coupling
into the analog signals from transient digital signals.
Table 1-3 shows the recommended connectors to use with the I/O
connector on your AO device.
Table 1-3. Recommended AO Connectors
Device
NI 6711/6713
NI DAQCard-6715
NI 6722/6723
NI 6731/6733
For more information on the connectors used for DAQ devices, refer to the
KnowledgeBase document, Specifications and Manufacturers for Board
Mating Connectors. To access this document, go to
enter the info code
rdsmbm
The following recommendations apply for all signal connections to the
AO Series device.
• Separate the signal lines of the AO Series device from high-current or
high-voltage lines. These lines can induce currents in or voltages on
the signal lines of the AO Series device if they run in close parallel
paths. To reduce the magnetic coupling between lines, separate them
by a reasonable distance if they run in parallel, or run the lines at right
angles to each other.
• Do not run signal lines through conduits that also contain power lines.
Connector
Honda 68-position, solder cup, female connector
Honda backshell
AMP 68-position, VHDCI AMP backshell
AMP 68-position, VHDCI AMP backshell
Honda 68-position, solder cup, female connector
Honda backshell
.
1-6
and
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