Fluke 91 Series II User Manual page 10

IX
and is rated up to 600V rms above earth ground. The ScopeMeter test tool uses a three-lead connection sys-
tem for dual input, isolated (electrically floating) measure-
ments. The connections for isolated and grounded
measurements are shown in the following illustration.
Figure 1 Common (Ground) Connections
NOTE
Fluke 91 has a two lead connection system.