CS-3000 RF Generator Unit Operator Manual
AtriCure, Inc.
IFU-0022.A
2021/04
Page 10 / 12
Chapter 5 Product Specifications
Operational Conditions & Front Panel Displays
Figure 8. RF Generator Front Panel Display at “Power On”
Turning POWER ON to the generator transitions the generator to “Standby” mode.
Figure 9. RF Generator Front Panel Display at “Standby Mode”
Entering STANDBY MODE activates the “Standby” LED (“Error” LED and “RF ON/
OFF” LEDs remain off). The nContact logo & “software version” are displayed.
Figure 10. RF Generator Front Panel Display Entering “Power Control
Mode”
From Standby, when the user presses the “MODE” button, the generator passes a
self-test. If the self-diagnostic tests don’t detect an Error code, the generator then
enters POWER CONTROL MODE (in this mode, the RF ON/OFF LED is blinking).
As displayed in the drawing above, the impedance measurement is Open Circuit
(OC) because the device and the indifferent electrode is not connected. The
generator Power is set to 4 W and Time is set to 0.
Figure 11. RF Generator Front Panel Display in “Power Control \
Ready State”
From POWER CONTROL MODE the generator enters a
Ready State.
Note: An indifferent electrode and coagulation device are connected to the
generator and placed on the patient.
“RF ON/OFF” LED is not activated, but will be blinking.
When the user attaches a device, the generator
detects
device type and
presets
information.
Refer to the Instructions for Use of the coagulation devices for the pre-set power
and time.
Figure 12. Sample Display in “RF ON” State with a Device Attached
POWER CONTROL \
RF ON State
for Devices
In this mode, the user presses “
RF ON/OFF
” to activate and transmit RF energy
to the coagulation device. The “RF ON/OFF” LED is activated.
Power
is preset
for the coagulation devices. The cycle
Time
(e.g. 56 s) is displayed in lower right
corner and counts up to the set value.
Impedance
is measured and the value displayed in the lower left (e.g. 105 Ω).
Impedance is graphed (in the right “Test” bar) against the baseline value mea-
sured at initiation of RF. The baseline value is also displayed above the graph
and in the left “Baseline” bar.
The percent change in impedance from baseline is displayed on the right (e.g.
↓25%) with an arrow (↑ or↓) to indicate whether the change in value was an
increase or a decrease.
During RF application, an audible tone will sound every second for a 200 millisec-
ond pulse.
Figure 13. Front Panel Display in “RF ON” with Resistivity Active
POWER CONTROL \
RF ON
with
Resistivity Active, Device & Indifferent,
Dispersive Electrode Attached
“RF ON/OFF” is transmitted to the device and the “RF ON/OFF” LED is activated.
Measured impedance
is displayed (120) but not graphed.
Resistivity is measured
and graphed (“Test”) against the “Baseline” value (300 Ω/cm).
Percent change in resistivity
is displayed on the right (e.g. ↑ 20%)
Power
transmitted at 50 W
Time
(33 sec) counts up to set point
Figure 14. RF Generator Cycle Complete, Returns to Power Control
“Ready” State
When the RF cycle is complete upon reaching preset time, generator returns to
the POWER CONTROL MODE
Ready State.
“RF ON/OFF” terminates
when Time equals set point, and LED turns off.
“Time Limit” message is displayed in the upper right.
Parameters display for 3 seconds, then reset to preset values.
Final Impedance
is measured (80 Ω) and displayed in lower left and is graphed
against the “baseline” value (100 Ω).
Final Percent
change in impedance is displayed (↓ 20%).
Final Power
transmitted shown (50W).
Time at Termination of RF energy
is displayed (90 s).