National Instruments PCI-1200 Manual De Usuario
Chapter 1
Introduction
© National Instruments Corporation
1-5
Optional Equipment
National Instruments offers a variety of products to use with your PCI-1200
board, including cables, connector blocks, and other accessories, as
follows:
board, including cables, connector blocks, and other accessories, as
follows:
•
Cables and cable assemblies
•
Connector blocks, 50-pin screw terminals
•
SCXI modules and accessories for isolating, amplifying, exciting, and
multiplexing signals for relays and analog output. With SCXI you can
condition and acquire up to 3,072 channels. To use the PCI-1200 with
SCXI you need the SCXI-1341 adapter.
multiplexing signals for relays and analog output. With SCXI you can
condition and acquire up to 3,072 channels. To use the PCI-1200 with
SCXI you need the SCXI-1341 adapter.
•
Low channel count signal conditioning modules, boards, and
accessories, including conditioning for strain gauges and RTDs,
simultaneous sample and hold, and relays
accessories, including conditioning for strain gauges and RTDs,
simultaneous sample and hold, and relays
For more information about optional equipment available from National
Instruments, refer to your National Instruments catalogue or call the office
nearest you.
Instruments, refer to your National Instruments catalogue or call the office
nearest you.
Custom Cabling
National Instruments offers cables and accessories for you to prototype
your application or to use if you frequently change board interconnections.
your application or to use if you frequently change board interconnections.
If you want to develop your own cable, however, the following guidelines
may be useful:
may be useful:
•
For the analog input signals, shielded twisted-pair wires for each
analog input pair yield the best results, assuming that you use
differential inputs. Tie the shield for each signal pair to the ground
reference at the source.
analog input pair yield the best results, assuming that you use
differential inputs. Tie the shield for each signal pair to the ground
reference at the source.
•
You should 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.
digital halves of the cable. Failure to do so results in noise coupling
into the analog signals from transient digital signals.