8-6
the cables can be suspended to meet similar dis-
tances as shown in the figure. The table or bench
that the load and active accessories are placed on
cannot be made of, or have, a conductive surface).
4. RF leakage is tested with a 200 ohm resistor
connected from the Active lead to ground, and
then connected from the return electrode lead to
ground, but not necessarily in that order.
• Active cable: Connect an RF milliammeter
(250mA full scale) in series with a 200 ohm
non-inductive resistor to the Active cable as
depicted in the RF Leakage figure.
• Return Electrode Cable: Connect an RF mil-
liammeter (250mA full scale) in series with a
200 ohm non-inductive resistor to the return
electrode cable as depicted in the RF Leakage
figure.
• Connect the other side of the RF ammeter to
earth ground. A chassis ground stud located
on the back side of the system under test is
available for this connection.
5. Test each mode and each RF Output jack at
Full Dial Setting.
• Pure Cut (300W): Handcontrol 1,
Handcontrol 2, & Footcontrol
• Blend 9 (200W): Handcontrol 1,
Handcontrol 2, & Footcontrol
• Pinpoint Coag (120W): Handcontrol 1,
Handcontrol 2, & Footcontrol
• Spray Coag (80W): Handcontrol 1,
Handcontrol 2, & Footcontrol
• Spray typically has the greatest leakage of the
modes tested thus far. Should the Leakage of
Spray, or any other mode for that matter, with
the exception of ABC™ exceed IEC limits of
150mA, a means of adjusting the leakage is
available.
• On the HS/A.R.M. Assembly (A11), adjust
LKADJ (R15) until the RF Leakage is at
about 140mA. When adjusting R15, the RF
Leakage is reduced by reducing the HVDC.
Note: This adjustment affects the open circuit
voltage, so do not adjust unless it is necessary.
• Bipolar Coag (70W): Bipolar Output jacks
(Bipolar RF leakage is typically too low to
measure - if Cut, Blend & Pinpoint are well
under 150mA, testing bipolar RF leakage is
not necessary.)
• ABC™ (30W): The ABC™ mode has a fixed
output voltage that is not dial dependent
when a load is not connected directly between
the active and return electrode outputs. Use
the ABC Test Adaptor when testing RF leak
-
age from the active electrode.
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