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Chapter 2
Using the Module
Figure 2-8 illustrates the internal construction of a powered/amplified sensor. Table 2-8
provides a guide for connecting signals from the PXIe-4480 to the sensor.
Figure 2-8.
Powered/Amplified Sensor
To match a variety of sensor requirements, the voltage source is configurable with two fixed
settings: 10 V and 25 V.
It is also possible to utilize the voltage excitation source to excite a passive full-bridge strain
gage, as shown in Figure 2-9. Refer to Table 2-8 for a guide to connecting signals from the
PXIe-4480 to the strain gage.
Figure 2-9.
Full Bridge Strain Gage
Table 2-8.
Powered/Amplified Sensor Connection
Sensor Terminal
*
Module Terminal
+INPUT
EX+
-INPUT
EX GND
+OUTPUT
AI+
-OUTPUT
AI-
*
Sensor terminal names are for illustrative purposes only and may vary across sensor types and vendors.
+INPUT
–INPUT
–OUTPUT
+OUTPUT
AMPLIFIER
REGULATOR
+INPUT
+OUTPUT
–INPUT
–OUTPUT