4-11
Table 4.4 Allowable RF Leakage Current to Ground
MEASURED TERMINAL
ACTIVATED ACCESSORY MODE
RF LEAKAGE (Ma)
Dispersive Electrode
Coag Footswitch
Standard Coag
< 100
Dispersive Electrode
Cut Footswitch
Pure Cut
< 100
Dispersive Electrode
Left Hand Controlled
Standard Coag
< 100
Dispersive Electrode
Right Hand Controlled
Standard Coag
< 100
Footswitched Active
Coag Footswitch
Standard Coag
< 100
Left Hand Controlled Active
Left Hand Controlled
Standard Coag
< 100
Right Hand Controlled Active
Right Hand Controlled
Standard Coag
< 100
Bipolar Right
Bipolar Footswitch
Bipolar Macro
< 67
Bipolar Left
Bipolar Footswitch
Bipolar Macro
< 67
Equipment:
• ESU Tester with RF Leakage function -OR-
• 0-250 mA RF Ammeter with a 200 ohm 10
W Non-inductive Resistor
• Patient Plate Adapter Plug
• 2 - Test leads, 1 m max. length
• 3 - Test leads, 10 cm max. length
• Wooden table approximately 1 m from floor.
NOTE: The CONMED Leakage Abatement
System (CLAS™) controls RF leakage by puls-
ing the output to reduce the RMS voltage during
open circuit conditions, thus keeping the hazard-
ous energy below IEC safe limits. Use a measur-
ing device that meets IEC specification for RMS
measured over one second.
Procedure:
1) Ensure that the unit is fully assembled and all
fasteners are tight.
2) Place the ESU tester or meter with resistor on
the table so that they are at least 0.5m away
from the unit under test and any other con-
ductive surface.
3) Set the unit for full power for the modes
noted in the table. Connect the ESU tes-
ter in accordance with the manufacturer’s
instructions -OR- connect the 200-ohm non-
inductive resistor in series with the 250 mA
RF ammeter to the Equipotential Ground
Connection on the Rear Panel. Also make
sure there are no connections to any output
other than the one you are measuring.
WARNING: HAND CONTROL
ACTIVATIONS SHOULD BE KEYED
USING 3” OR LESS WELL-INSULATED
JUMPER. USE OF AN INSULATING ROD
TO INSERT THE JUMPER IS ADVISED
TO PREVENT RF BURNS.
3) One at a time, connect test setup to each RF
output terminal indicated in Table 4.4 and
activate the unit using the corresponding
command. Confirm no meter readings exceed
the specified maximum. Hand control coag
activations are accomplished by connecting a
jumper between the left jack and center jack
of the desired hand switched accessory jack.
RF leakage should also be measured between inac-
tive outputs and the Dispersive Electrode connec-
tion. The procedure is as follows:
1) Set the unit for full power for the modes
noted in Table 4.5. Connect the ESU tester
according to manufacturer’s instructions -
OR- the 200-ohm non-inductive resistor in
series with the 250 mA RF ammeter to the
Dispersive Electrode connection on the front
panel. Also make sure there are no connec-
tions to any output other than the one you
are measuring.
2) One at a time, connect this series combina-
tion to each RF output terminal indicated
in Table 4.5 and activate the unit using the
corresponding command. Confirm that no
meter readings exceed the specified maximum.
