National Instruments NI 7831R Manual de usuario Pagina 27

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Chapter 2 Hardware Overview of the NI 7831R
NI 7831R User Manual 2-8 ni.com
Figure 2-5. Summary of Analog Input Connections
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V
1
AI<
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AISENSE
AIGND<
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AI<
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AISENSE
AIGND<
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See text for information on bias resistors.
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AIGND<
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V
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AI
+ V
g
AIGND
Ground-loop losses, V
g
, are added to
measured signal.
NOT RECOMMENDED
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AI<
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>(–)
AIGND<
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See text for information on bias resistors.
Signal Source Type
Floating Signal Source
(Not Connected to Building Ground)
Grounded Signal Source
Examples
Ungrounded Thermocouples
Signal Conditioning with
Isolated Outputs
Battery Devices
Examples
Plug-in Instruments with
Nonisolated Outputs
Input
Differential
(DIFF)
Single-Ended —
Ground
Referenced
(RSE)
Single-Ended —
Nonreferenced
(NRSE)
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