Gamry Reference 3000 Operator's Manual page 80

Chapter 9 -- Measurement of Small Current Signals--Floating Operation
Instrument performance can be substantially degraded when the Reference 3000 is operated in a floating
mode. The instrument specifications only apply on isolated cells with the Reference 3000 earth ground
referenced (not floating).
Special precautions must be taken with the cell connections when the Reference 3000 must float. Make sure
that all the cell connections are isolated from earth ground. In this case, you must disconnect the chassis
ground terminal of the Reference 3000 from earth ground.
Finally, ancillary apparatus connected to the Reference 3000 must be isolated. External voltmeters, ammeters,
FRA's etc. must be isolated. This includes devices connected to the monitor connectors located on the
Reference 3000 rear panel.
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