National Instruments AT E Series - Manual (Page 66)

Chapter 4 Connecting Signals
© National Instruments Corporation 4-19 AT E Series User Manual
Figure 4-5. Summary of Analog Input Connections
+
–
+
–
V
1
ACH
AISENSE
AIGND
+
–
+
–
V
1
ACH
AISENSE
AIGND
R
See text for information on bias resistors.
+
–
+
–
V
1
ACH
AIGND
+
–
+
–
V
1
ACH
+ V g –
AIGND
Ground-loop losses, V
g
, are added to
measured signal.
NOT RECOMMENDED
+
–
+
–
V
1
ACH(+)
ACH(–)
AIGND
+
–
+
–
V
1
ACH(+)
ACH(–)
AIGND
R
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)