National Instruments SCXI-1120 - Manual (Page 30)

Configuration and Installation Chapter 2
SCXI-1120 User Manual 2-14 © National Instruments Corporation
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Figure 2-4. Ground-Referenced Signal Connection with High Common-Mode Voltage
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Figure 2-5. Floating Signal Connection Referenced to Chassis Ground for Better
Signal-to-Noise Ratio
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R bias
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Module
Figure 2-6. Floating AC-Coupled Signal Connection