Chapter 2 DAQ System Overview
X Series User Manual 2-6 ni.com
Screw Terminal Accessories
National Instruments offers several styles of screw terminal connector
blocks. Use an SHC68-68-EPM shielded cable to connect an X Series
device to a connector block, such as the following:
• CB-68LP and CB-68LPR—Unshielded connector blocks
• SCC-68—I/O connector block with screw terminals, general
breadboard area, bus terminals, and four expansion slots for SCC
signal conditioning modules
• SCB-68—Shielded connector block with temperature sensor
• TBX-68—DIN rail-mountable connector block
• TB-2706
1
—Front panel mounted terminal block for X Series
PXI Express devices
You can use one screw terminal accessory with the signals on either
connector of your X Series device. You can use two screw terminal
accessories with one X Series device by using both connectors.
RTSI Cables
Use RTSI bus cables to connect timing and synchronization signals among
PCI/PCI Express devices, such as X Series, M Series, CAN, and other
measurement, vision, and motion devices. Since PXI devices use PXI
backplane signals for timing and synchronization, no cables are required.
Cables
In most applications, you can use the following cables:
• SHC68-68-EPM
2
—High-performance shielded cable designed for
M/X Series devices. It has individual bundles separating analog and
digital signals. Each differential analog input channel is routed on an
individually shielded twisted pair of wires. Analog outputs are also
individually shielded
• SHC68-68—Lower-cost shielded cable with 34 twisted pairs of wire
• RC68-68—Highly-flexible unshielded ribbon cable
1
TB-2706 uses Connector 0 of your PXI Express device. After a TB-2706 is installed, Connector 1 cannot be used.
2
NI recommends that you use the SHC68-68-EPM cable; however, an SHC68-68-EP cable will work with X Series devices.
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