430-11902-02, Rev M
DELIVER Mode at any time by pressing the RF POWER CONTROL
Button once.
About the Power Limit
During RF delivery, the ESU adjusts the power output to maintain the
actual measured temperatures of each selected electrode at the
temperature setpoint.
The RF Power Limit (150 Watts maximum) is the maximum amount of
power that the ESU will deliver to achieve and maintain the desired tissue
temperature setpoint. The ESU only supplies as much RF power as
necessary to achieve the desired tissue temperature.
If the RF power limit is equal to or greater than the amount of power
necessary to achieve and maintain the desired tissue temperature, then
the ESU supplies the appropriate amount of power to achieve the
temperature setpoint.
If the RF power setpoint is set to a value less than the amount of power
required to achieve and maintain the desired tissue temperature, the
ESU will not achieve the desired tissue temperature and the measured
temperature will remain less than the desired tissue temperature.
Each Probe has a maximum recommended power for each electrode.
The default RF Power Limit is the recommended power limit per
electrode times the number of selected electrodes. For example, if the
probe’s per-electrode power limit is 25 Watts (25W), selecting 1 electrode
will change the POWER display to “25W”, two channels will change the
POWER display to “50W”, etc.
The ESU allows the operator to adjust the Power Limit, ignoring the
default power limit, up or down in 1 Watt increments to a minimum of 1
Watt to a maximum of 150 Watts, regardless of the number of electrodes
selected.
Setting the Power Limit
To change the RF power limit (in Watts), follow these steps:
1. Press the appropriate POWER Button
to increase or
decrease the RF power limit by 1 Watt.
2. To scroll rapidly to the desired power setpoint, depress and hold the
appropriate POWER Button
down.
3. Release the POWER Button
when the POWER Display
shows the appropriate RF power limit.
4. During RF DELIVER Mode, the power setpoint can be adjusted in 1-
W increments to provide better control during the procedure. While
making the adjustment, the SET LED will illuminate to indicate that
the value in the POWER Display is the RF power limit setpoint. Once
the operator completes the adjustment, the MEASURED LED is then
