Dataq DI-500 Series User Manual page 14

DI-500/510 Series and DI-750/760 Series Hardware Manual
be present. The differential amplifier is unique in its ability to measure signals originating from sources with different
ground potentials relative to the computer providing it is connected properly.
The most common error made in connecting differential amplifiers is the tendency to ground both ends of a signal
shield. This causes current to flow through the shield and induces noise on the signal to be measured. This problem is
eliminated by ensuring that only one ground exists on the signal circuit.
Getting Started
8
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