National Instruments PCI-1200 Manuel d'utilisateur Page 30

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Chapter 3 Signal Connections
PCI-1200 User Manual 3-8 © National Instruments Corporation
and ground-referenced signal sources. Table 3-4 summarizes the
recommended input configurations for both types of signal sources.
Table 3-4.
Summary of Analog Input Connections
Input
Differential
(DIFF)
Single-Ended
Ground
Referenced
(RSE)
Single-Ended
Nonreferenced
(NRSE)
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
+
-
+
-
V
1
ACH(+)
+
-
+
-
V
1
ACH(+)
ACH (-)
See text for information on bias resistors.
See text for information on bias resistors.
R
Signal Source Type
ACH (-)
AIGND
+
-
+
-
V
1
ACH
AIGND
+
-
+
-
NOT RECOMMENDED
ACH
+ Vg -
V
1
Ground-loop losses, Vg, are added to
measured signal
+
-
+
-
V
1
ACH
AISENSE
R
AIGND
+
-
+
-
V
1
ACH
AISENSE
AIGND
AIGND
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