ETS-Lindgren 4825-2 LISN - Manual (Page 17)

The safety ground isolation choke selector switch located on the front panel
switches the 1.6 mH earth line choke in and out of the safety ground circuit. The
ground choke is designed and manufactured with sufficient current capacity to
conduct the maximum current rating of the Model 4825/2 and at no time is the
safety ground of the unit compromised. When the earth line choke selection
switch is in the IN position, the earth line choke avoids a double RF ground
connection (safety ground and measurement ground) in the conducted emissions
test setup.
An artificial hand connection is provided on the front panel. In conformance to
EN55014 and BS800, the artificial hand is used to test handheld equipments
which are provided without earth connections.
Equipment Under Test
• The Equipment Under Test (EUT) is connected to the Model 4825/2
through the power adapter located on the front panel.
• The red and black socket receptacles on the front panel provide
connection to the two power lines; the green socket receptacle
provides connection to the earth line.
• A radio frequency bonding stud on the front panel
is identified by the equipotentiality symbol. In
normal operation this bonding stud should be
connected to the ground plane of the conducted
emissions test setup using a grounding strap or
braid. This grounding stud should not be
considered a protective earth bonding point.
Installation | 17