National Instruments Isolated Analog Input Modules SCC-AI14 - Manual (Page 7)

© National Instruments Corporation 7 SCC-AI Series Isolated Analog Input Modules
If a high common-mode voltage is present, connect the negative input pins,
1 and 3, to the signal reference. Figure 1-5 shows a ground-referenced
signal connection on one channel of the SCC-AIXX.
Figure 1-5. Ground-Referenced Signal Connection for the SCC-AIXX
with High Common-Mode Voltage (One Channel)
Configuring the SCC System
Measurement & Automation Explorer (MAX) Configuration
Run MAX to configure the SCC system. Complete one of the following
sets of steps depending on the version of NI-DAQ used in your application.
NI-DAQmx
Complete the following steps to configure the SCC-AI module using
NI-DAQmx.
1. Open Measurement & Automation Explorer.
2. Right-click Devices and Interfaces and select Create New.
3. Under NI-DAQmx SCC Connector Block select SC-2345. Click
Finish.
+
4
Lowpass
Filter
+
–
–
+
–
Lowpass
Filter
3
2
1
E Series DAQ Device
Signal
Source ACH( X )
SCC-AI XX
AISENSE
AIGND
ACH( X+8)
High
CMV
+
–