Fluke II Series Operator's Manual page 27

Rear Panel Connectors (cont.)
The OUTPUT, SENSE, and V GUARD binding
posts on the rear panel are alternative connections
to the UUT. An internal cable enables either the
front or rear binding posts. The procedure to
disable the front panel binding posts and enable
the rear panel binding posts involves opening the
cover of the Calibrator, which should only be done
by authorized service personnel.
The I GUARD binding post provides an external
connection point for the internal current guard. The
current guard is used when the Calibrator is
supplying low-level ac current through a long cable
to remove errors introduced by leakage through
the cable capacitance.
Refer to the connection diagrams for examples of
usage.
AUX CURRENT OUTPUT
This output is not available on the rear panel
binding posts.
CHASSIS GROUND Binding Post
A binding post that is internally grounded to the
chassis. If the Calibrator is the location of the
ground reference point in a system, this binding
post can be used for connecting other instruments
to earth ground. (The chassis is normally
connected to earth ground through the three-
conductor line cord instead of through the earth
ground binding post.)
25