Advantech PCIE-1802, User Manual

Page: 24 / 44

PCIE-1802 User Manual 18
3.3.2.3 IEPE for Input
For applications that require sensors such as microphones or accelerometers, the
PCIE-1802 provides an excitation current source to excite IEPE sensors. A DC volt-
age offset is generated due to the excitation current and sensor impedance. When
IEPE current sources are enabled, the PCIE-1802 automatically sets input configura-
tion to AC coupling and pseudo-differential.
Figure 3.5 AI IEPE Sensor Input Signal Connection
3.3.3 Digital Input/Output Connections
PCIE-1802 provides 2 Channels DO and 1 channel DI.
3.3.3.1 Digital Input Channel Connections
Figure 3.6 Digital Input Channel Connections