Custom cabling, Custom cabling -9 – National Instruments Data Acquisition Device E Series User Manual
Page 26
Chapter 1
DAQ System Overview
© National Instruments Corporation
1-9
Custom Cabling
NI offers a variety of cables and accessories to help you prototype your
application or to use if you frequently change device interconnections.
However, if you want to develop your own cable, adhere to the following
guidelines for best results.
•
Use shielded twisted-pair wires for each differential AI pair. 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 halves of the cable. Failure to do so results in noise coupling
into the analog signals from transient digital signals.
Mating connectors and a back-shell kit for making custom 68-pin cables
are available from NI. For more information about the 68- and 100-pin
BNC-2111
BNC accessory for 68- or 100-pin E Series devices
BNC-2115
BNC accessory for extended I/O on 100-pin E Series
devices
BNC-2120
BNC accessory with function generator
(for 68-pin E Series devices)
BNC-2090
Rack-mountable BNC accessory (for 68-pin E Series
devices)
CA-1000 enclosure
Configurable connectivity enclosure
TB-2705
Latching screw terminal block for PXI E Series modules
SCB-100
100-pin, shielded screw terminal block with breadboard
areas
SCB-68
68-pin, shielded screw terminal block with breadboard
areas
TBX-68
68-pin, DIN rail-mountable screw terminal block
CB-68LP, CB-68LPR
68-pin, low-cost screw terminal block
Signal Source and Demo Accessory
DAQ signal accessory to demo and test analog, digital,
and counter/timer functions
Table 1-3. E Series DAQ Accessories Overview (Continued)
Accessory
Description