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The Reference 600+ is normally provided with an AC line cord suitable for your location. This AC line
cord connects the AC mains to the AC power adapter. If your Reference 600+ has been provided without
an AC line cord, or a cord that is not compatible with your local AC mains socket, obtain a line cord
certified for use in your country. Contact your local Gamry Representative or email to
techsupport@gamry.com if you are uncertain what AC line cord to use.
Grounding in the Reference 600+
The circuitry and the metal case of the Reference 600+ are not connected to an earth ground. If they
were connected to earth ground, it would compromise the Reference 600+’s ability to make
measurements in electrochemical cells that contain earth grounded metal. A few examples of such cells
include autoclaves, metallographic stress apparatus, and detectors for capillary electrophoresis.
Most electrochemical cells are isolated from earth ground, so isolation of the Reference 600+ from earth is
not required. In these cases, connection of the Reference 600+ chassis to an earth ground may lower the
noise seen in an electrochemical test. A Chassis Ground binding post on the rear panel of the Reference
600+ makes for easy implementation of this connection. Simply run a wire from this binding post to a
suitable source of earth ground. A black 1.2-meter wire is provided with the Reference 600+ to ease this
connection.
Note this connection of the Reference 600+ to an earth ground is not a “Protective Earth Ground” as
defined in EN 61010. The Reference 600+ is safe in the absence of this connection.
Sources of earth ground include
• Most metal water pipes,
• The chassis of most electronic apparatus (which are generally earth-grounded), and
• The protective ground terminal of an AC mains power plug.
We recommend that you discuss grounding with an electrical or electronics professional prior to
making this earth-ground connection.
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