NI SCXI-1127, Руководство пользователя

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Chapter 2 U s i n g the SCXI-1127
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the ABO switch to connect the multiplexer output to the high-voltage
analog backplane. You can do this through NI-SWITCH.
Figure 2-3 shows an example of a two-wire configuration using the
SCXI-1331 terminal block. The diagram shows the two-wire terminal
block connections for channels 2, 5, 24, and 27. Channel 2 measures a
voltage source (V1). The positive terminal of channel 2 is l2 with
the negative channel labeled -2. The output of the multiplexer is available
through the OUTO bus.
Figure 2-3. Two-Wire Wiring Diagram
You can connect different types of two-wire inputs to the SCXI-1127. For
example, in Figure 2-3, a thermocouple (V2) is shown connected to
channel 27, and on channel 5 (R1) and 24 (R2) resistance measurements are
being made. Consult the
Making Temperature Measurements section for
more information on temperature compensation measurements for making
accurate thermocouple measurements.
SCXI-1127 User Manual
2-4 © National Instruments Corporation