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© National Instruments Corp. 7 NI 9237 Operating Instructions and Specifications
When you connect a half bridge to the NI 9237, you must connect
the AI+, EX–, and RS– signals, but you do not connect the AI–
signal. When you connect a full bridge, you must connect the AI+,
AI–, EX–, and RS– signals. Refer to Figure 2 for an illustration of
how to connect half and full bridges to the NI 9237.
Note You can use a quarter bridge with the NI 9237 if
you add a resistor externally to create a half bridge. You
also can use a quarter bridge with the NI 9237 if you use
the NI 9944 or NI 9945 Quarter Bridge Completion
Accessory. Visit
ni.com and search for the NI 9944 and
NI 9945 Quarter Bridge Completion Accessories for
more information about these accessories and how to
purchase them.
Note National Instruments does not recommend using
an RJ-45 cable with the NI 9237 because it can physically
damage pins 1 and 10 on the device, and thus
permanently disable shunt calibration no matter what
connector you use.