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D-8
Figure D-3
ground loop problem. Here, only one instrument is connected to power line ground.
Ground loops are not normally a problem with instruments like the Model 2790 that have
isolated LO terminals. However, all instruments in the test setup may not be designed in
this manner. When in doubt, consult the manual for all instrumentation in the test setup.
Model 2790 SourceMeter
shows how to connect several instruments together to eliminate this type of
Figure D-3
Eliminating ground loops
Instrument 1
®
Switch System Reference Manual
Instrument 2
Instrument 3
Power Line Ground
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