Front Connector - National Instruments Module SCXI-1503 User Manual

R
Note
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Front Connector

Do not make any connections to RSVD pins.
Note
© National Instruments Corporation
In this configuration, the lead-resistance voltage drop across R
converted into a common-mode voltage that is rejected by the differential
amplifier. Also, the polarity of the lead-resistance voltage drops across R
and R are series opposing, relative to the inputs of the differential
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amplifier, eliminating their effect on the voltage measured across R
and R are assumed to be equal.
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The effectiveness of this method depends on the matching of the current
sources. Each current source on the SCXI-1503 has an accuracy of ±0.05%.
This accuracy results in a worst-case matching of ±0.1%. Refer to the
Chapter 4, Theory of
thermistors.
The pin assignments for the SCXI-1503 front signal connector are shown
in Table 2-1.
Operation, for accuracy considerations of RTDs and
2-7
Chapter 2 Connecting Signals
is
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.
T
SCXI-1503 User Manual
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