Sabre Genesis
Sabre Genesis
E lectrosurgical G enerator
LIMITED WARRANTY
For a period of two years following the date of delivery,
CONMED Corporation warrants the CONMED Sabre
Genesis™ Electrosurgical Generator against any defects
in material or workmanship and will repair or replace (at
CONMED’s option) the same without charge, provided
that routine maintenance as specified in this manual has
been performed using replacement parts approved by
CONMED. This warranty is void if the product is used in
a manner or for purposes other than intended.
EC REP
STERILE EO
© 2009 CONMED Corporation
MdSS GmbH
525 French Road
Schiffgraben
D-30175 Hannover
41
STERILE R
Utica, NY 13502-5994
Germany
USA
STERILE A
U.S. Patent Numbers 6,830,569 - 6,875,210 - 6,948,503 -
7,540,871 and other patents pending.
2
For Technical Service or Return LOTPhone:
0123 Authorization
303-699-7600 / 1-800-552-0138 Extension 5274
Fax 303-699-1628
CUT COAG
EC REP
STERILE EO
European Authorized
MdSS GmbH Representative
MDSS GmbH
Schiffgraben 41
STERILE R
D-30175 Hannover
Schiffgraben
Germany
41
D-30175 Hannover
STERILE A
9083
Germany
9083
~
Table of Contents
& List of Illustrations
Sabre Genesis™ functions and essential circuit information are provided in this section. This section begins
with a description of the key parameters for each mode. This is followed by an overview of how the system
functions and some key operational information for the modules within the system.
3.1 Mode Descriptions
The key functional parameters for each mode are presented here. Nominal mode specifications are provided
in section 1.2.11 of the Sabre Genesis™ Operators Manual.
3.1.1 Cut Major Modes
3-1
activations from accessories and the circuitry to • To ensure that the correct outputs are acti-
perform the Automatic Return Monitor (A.R.M.) vated, the Monitor also independently
function to ensure the integrity of the dispersive senses current at each of the outputs, look-
electrode connection. ing for current flow that would indicate
The power section also includes a number of out- electrosurgical power at outputs other than
put voltage and current sensors that are used by the selected output.
the RF Controller for control of power delivery • The Monitor senses the audio output to ensure
and by the Monitor to detect errant output condi- that a tone occurs whenever electrosurgical
tions. Windings on the Monopolar output trans- outputs are active.
former and the Bipolar output transformer are the • The RF Amplifier drive signal is sensed by
means for sensing output voltage. Separate pri- the Monitor to detect improper frequencies
mary-side current transformers are shared by the or improper pulse sequences for the selected
bipolar and monopolar channels for control and mode.
monitoring of the current. There are also separate
• The Monitor independently compares the
current sensors on the monopolar outputs that are
activation signal with that seen by the System
used to detect stuck output relays.
Controller to ensure that the activation signal
The RF Controller is a Field Programmable Gate is consistent.
Array (FPGA) that generates the RFGATE and
The Monitor has the capability to independently
VBASE_PWM RF Amplifier drive signals based
disable the electrosurgical output if a problem is
upon a comparison of measured parameters
detected.
and settings-based parameters. The pulse train
sequence is a settings-based parameter that is The System Controller provides the primary con-
dependent on the selected mode. Target power, trol interface to the user and other outside sys-
current limit, and voltage limit are all settings- tems, including the serial interface, the activation
based parameters derived from a load curve that relay, tone generation, and displays.
is specific to the selected mode and front panel Finally, the Display accepts all user input and pro-
power setting. The RF Controller samples vides all user feedback. The Display is controlled
electrosurgical output current and output volt- by the System Controller through a serial interface
age from sensors at a 20 Megahertz rate and uses and illuminates the LED display elements in a
these sampled values to calculate sensed current, time division multiplexed fashion; the illuminated
sensed voltage, and output power. This high sam- LED display elements are actually on less than half
ple rate allows control of the real power delivered the time. The Display also provides for user input
to the active accessory and also allows the Sabre through the buttons on the control panel, includ-
Genesis™ to rapidly adapt to changing loads. The ing switch de-bouncing and conditioning.
output current, output voltage, and output power Figure 3.2 illustrates the key elements of the sys-
are compared with corresponding settings based tem in block diagram form.
parameters of current limit, voltage limit, and
target power, respectively, and the RF Controller
adjusts value of VBASE_PWM in a closed-loop
fashion to control these parameters. The RF
Controller also provides fixed pulses for RFGATE
within each mode-based pulse train sequence.
The RF Monitor is a Digital Signal Processor
(DSP) that is used to monitor the system for
safety problems that can result from a variety of
conditions.
• The Monitor has independent sensors for out-
put voltage and current, which it uses to cal-
culate power for comparison with the power
that the RF Controller senses and for com-
parison with the generator power setting.
3-2
Indicators:
Activation & Mode
Activation Request Keyboard Modes /
Power Displays
Activation Relay
ACT RLY
Connector
RS232 Serial Interface
SPI Connector
AL TONE
ACT TONE
System Controller A.R.M
Patient
RF Output Relays
VARM
RLY DRV Mono Bip
RF INH
PFC EN
HVEN
RF Controller RF MP VS
RF BP VS RF Amp
RF IS
Host RFDRV
Bus
Monitor
HFINH
M ISN
MRF BP VSN
MRF MP VSN
MRF H1 SN
MRF HF SN
3-3
3.2.1 High Voltage Power Supply (HVPS) (Vbase_PWM).
The HVPS is comprised of a Power Factor The RFGATE drive pulses provide the basic pulse
Control (PFC) section and a Forward Converter pattern that is used to form the electrosurgical
(FC) section. The PFC converts Mains power waveform, and have a set pulse-pattern and pulse-
to approximately 400 volts using techniques width for each mode. A drive of several pulses
that ensure the mains current into the supply is at a frequency that closely matches the resonant
sinusoidal and in phase with the mains voltage. By frequency of the amplifier characterize Cut and
doing so, RMS current and harmonic distortion Blend modes, and the output pulses substantially
are reduced. The Forward Converter then converts correspond to the drive. Spray and Standard
the PFC output to an adjustable DC voltage for Coag modes, however, are characterized by pulses
use by the RF amplifier. that occur less frequently where the amplifier is
allowed to “ring” at its resonant frequency.
The System Controller can enable or disable the
PFC section of the HVPS. The PFC is normally Rapid regulation of the output power in this
enabled during operation to ensure a resistive load arrangement is provided by VBASE_PWM; as
is presented to the Mains. VBASE_PWM is increased, the output power
increases. As noted in the RF Controller dis-
The Forward Converter is a switch-mode power
cussion, the RF Controller compares the out-
converter that adjusts its operating frequency
put power with the desired power and adjusts
between 25KHz and 100KHz to ensure proper
the VBASE_PWM to minimize the difference.
resolution for the commanded output voltage.
VBASE_PWM enters the amplifier as a 312 KHz
Isolation between Mains power, the HVPS and Pulse-Width-Modulated (PWM) signal that is fil-
the LVPS (+12V) output occurs in the Forward tered to become a variable DC base drive signal.
Converter. The RF
Finally, the RF Amplifier and Transformer provide
Monitor enables the output of the HVPS. The capabilities for sensing RF output current and
forward converter includes current limiting on the voltage. The voltage sensors that are used for
output and has provisions to shutdown when the power control and power monitoring are indepen-
output of the Low Voltage Supply exceeds limits. dent windings on the output transformers. The
The +12V output is then used to supply input current is also measured on the primary side of
voltage to a variety of low-voltage regulators on the transformers. With proper characterization of
the controller board. the transformer, the controller obtains an accurate
3.2.2 RF Amplifier and Transformer representation of the voltage, current, and thus the
output power of the system.
The RF Amplifier and Transformer portions use
a switch-mode resonant hybrid-cascode ampli- 3.2.3 Electrosurgical Outputs
fier to convert the power from the RFPS to the Relays are provided to isolate electrosurgical out-
RF energy necessary for electrosurgery. One may puts and select which outputs are active. The
think of the amplifier as a high-speed switch that System Controller selects the appropriate output
pulses current through a resonant circuit, which is relays based upon activation command inputs.
formed by the monopolar or bipolar transformer
The Monitor utilizes current sensors implemented
together with capacitors that are connected to
on each monopolar electrosurgical output to
the transformer primary and secondary wind-
determine whether current is flowing only to the
ings. The transformers are designed with a good
correct outputs. In the event that current flows
deal of leakage inductance in order to provide
in an output that is not selected, the Monitor can
inductance for resonating with the capacitors.
independently disable RF. The monitor uses the
One Metal-Oxide-Semiconductor Field Effect
bipolar primary voltage to sense that the bipolar
Transistor (MOSFET) is connected in series with
relay has been activated.
three parallel bipolar transistors to provide the
switching. The pulses to drive the gate on the
MOSFET in this arrangement come from the RF
Controller (RFGATE). The base connections of
the three parallel bipolar transistors are also driven
by a signal that originates from the RF Controller
3-4
3.2.4 Activation Command Sensing RFGATE outputs. To reduce the effects on
the microprocessor circuits on the Control/
Each of the Hand Controlled Accessory recep-
Display Board from RF noise at the output,
tacles incorporate inputs that are used to sense
VBASE_PWM and RFGATE are both dif-
an activation command from the user. Each
ferential mode signals running between the
monopolar hand controlled accessory receptacle
Control/Display Board and the power section.
has an input for Cut and an input for Coag. The
The RF Controller is capable of disabling
bipolar receptacle incorporates a single activation
RF output power and putting the system
input. Each of these five inputs is isolated from
into a safe state without any interaction from
the other electrosurgical outputs and from other
the Monitor or the System Controller. The
low-level circuitry in the system. All are powered
RF Controller independently monitors the
by a multiple output isolated power supply. The
RF output voltage and current for control
footswitch activation inputs on the back panel are
purposes through several scaled inputs. The
configured in a similar way and share one of the
RF Controller is comprised of the major por-
isolated power supply outputs.
tion of the FPGA, together with circuitry
3.2.5 Automatic Return Monitor (A.R.M.) necessary for converting the control signals
between analog and digital form.
The patient return connector interfaces to single
and dual dispersive electrodes using a two-pin • RF Monitor: A DSP that is dedicated to safety
connector. A.R.M. circuitry uses an actively driv- monitoring activities. The Monitor is capable
en impedance measurement circuit, which allows of disabling RF output power and putting the
the System Controller to detect the type of disper- system into a safe state without any interac-
sive electrode connected and verify its integrity. tion from the RF Controller or the System
Controller. To ensure that the Monitor can
3.2.6 System Controllers and Monitor correctly perform its function, the Monitor is
Two processors and an FPGA are used for system resistively isolated from the System Controller
interface & control, RF control, and system moni- and the RF Controller and has independent
tor functions. The RF control section consists of voltage regulation. The RF Monitor indepen-
a dual-channel architecture with two independent dently monitors a variety of inputs to detect
channels where one is used exclusively for RF out- safety problems and has control of disable
put control and the other is used for safety moni- signals for RF Amplifier drive. The Monitor
toring. All of these elements are located on the is comprised of a DSP, together with circuitry
Control board, along with circuitry for interface necessary for converting the signals monitored
with the user. between analog and digital form, an FPGA to
provide interface logic, independent voltage
• System Controller (System Microcontroller):
regulators, isolation resistors and other inter-
A dedicated Microcontroller that handles
face logic.
the entire user interface, Serial Interface, and
enables/disables the power factor control sec- 3.2.7 Low Voltage Power Monitoring
tion of the RFPS using the PFC_EN signal.
The low voltage power supply is monitored in
The System Controller can also disable the
hardware and resets the processors if it is out of
signal used to drive the RF Amplifier and can
range. The microprocessor supervisory device on
terminate RF drive at any time without inter-
the Control/Display Board monitors +3.3V and
action from either the RF Controller or the
+1.8V and will reset the system should the levels
Monitor. The System Controller is comprised
drop approximately 0.3V. The Control/Display
of a standard architecture microprocessor
together with portions of the FPGA, which
provides interface logic to a variety of signals,
independent voltage regulators, a processor
supervisory reset circuit, and other interface
logic.
• RF Controller: An FPGA implementing
digital signal processing elements for control
of RF power using the VBASE_PWM and
3-5
Board has the circuit that will reset the system speaker drive current be absent or too low.
should the 3.3V supply exceed 3.6V.
3.2.10 Activation Relay Connector
3.2.8 Operator Control Panel
There is an Accessory Relay Connector, which
• Keyboard: The main operator input device provides a relay closure (SPST switch) that may
for choosing operating modes and settings is be used for activating external accessories such as
the membrane keyboard panel. Tactile-feedback smoke evacuation units.
mechanical switches allow the operator to set
modes and adjust power settings. 3.3 Optional System Configurations
• Display Panel: Consists of 7-segment displays An eight-position configuration dipswitch (S2),
and discrete dual colored LED’s that will display located on the Control/Display Board Assembly
all controls and settings. LED display elements (A4) allows a qualified service technician to
are illuminated in a time division multiplexed change some of the factory default settings. With
fashion; the illuminated LED display elements are the exception of the DACview switch, which is
actually on less than half the time. only effective in Test Mode, the configuration dip-
switch settings are only detected when power is
3.2.9 Activation Tones initialized, so any changes to the switch positions
Tone is generated for all activation requests, fault will not be detected until power is cycled. Each
detection and changes made on the Control Panel. switch is OFF in the Down position and ON in
The System Controller generates the tone signal the UP position. (The system detects changes in
(TONE_DRV), which is amplified by a driver. the DACview switch while power is on, so it is
The activation tone is adjustable and controlled by treated differently.) Relevant information for the
an output from the System Controller, but alarm configuration dipswitches appears in Section 4.8.
tones are not adjustable and are set to generate a
tone greater than 65 dB.
There is circuitry to permit the Monitor to verify
the oscillation from voltage measured across the
speaker, which provides confirmation that the
speaker is indeed generating audible tones dur-
ing activation. RF output is inhibited should the
3-6
Maintenance
Section 4.0
This section contains information useful in the Johnson Company. Formula 409® is a registered
maintenance and repair of the Sabre Genesis™. trademark of the Clorox Company.)
WARNING: High voltages are present at the 4.4 Periodic Inspection
connections and within the Sabre Genesis™.
Maintenance personnel should take precautions The Sabre Genesis™ should be visually inspected
to protect themselves. Read the safety sum- at least every six months. This inspection should
mary in Section 1.1.4 of the Sabre Genesis™ include checks for the following:
Operators Manual before working on the 1) Damage to the power cord and plug.
ESU. 2) Proper mating and absence of damage to the
4.1 General Maintenance Information accessory connectors.
3) Any obvious external or internal damage to
Although the Sabre Genesis™ has been designed
the unit.
and manufactured to high industry standards, it is
recommended that periodic inspection and perfor- 4) Any accumulation of lint or debris within the
mance testing be performed to ensure continual unit or heatsink.
safe and effective operation. 5) Control Panel cuts, punctures, or dents.
Ease of maintenance was a primary consideration 4.5 Periodic Performance Testing
in the design of the Sabre Genesis™. Maintenance
features of this unit include microprocessor aided The Sabre Genesis™ should be tested for correct
troubleshooting aids and push button calibration, performance at least once every year. Every unit
built in fault detection, circuit protection, and easy is supplied with a serialized Production Test Data
access to circuitry while the unit is operational. Sheet that tabulates the results of the factory tests
that were performed on the unit. This data is
These features, coupled with the warranty, local
supplied so that it may be used as a reference for
support, loaner equipment, factory support, toll
subsequent tests.
free phone service to the factory and available fac-
tory training ensure a minimal maintenance effort Recommended periodic performance tests are
with extensive support available. listed in the following sections.
Only Hospital Qualified Biomedical Technicians Connect a standard ohmmeter between the
or ConMed factory technicians should perform earth ground prong on the power plug and the
service on the Sabre Genesis™. Refer all servicing Equipotential Ground Connection. Compensate
to a Hospital Qualified Biomedical Technician. for lead resistance. Confirm less than 0.2 ohms
resistance is measured.
If necessary, your CONMED sales representative
will be happy to assist you in getting your equip- 4.5.2 Displays, Alarms and Commands
ment serviced.
Perform the Preliminary Functional Test procedure
4.3 Cleaning described in section 2.4.1 of the Sabre Genesis™
Operators Manual to verify proper operation of
The interior of the unit may be vacuumed or displays, alarms and commands.
blown out as required. The exterior of the unit
may be cleaned by wiping it with a cloth that
has been dampened (not dripping) with a mild
detergent such as Windex® or Formula 409®.
(Windex® is a registered trademark of the S.C.
4-1
4.5.3 Output Power results.
1) Equipment Requirements: 2) Use test leads to connect the ESU tester to
the unit’s return electrode output and the
a) Monopolar Footswitch
footswitch controlled active output. Set the
b) Bipolar Footswitch Load resistance per mode as indicated in
c) Commercial ESU Tester (e.g. Fluke 454A Tables 4.1 and 4.2.
or equivalent) with non-inductive 50 load 3) Perform the monopolar power tests indicated
for bipolar modes and a non-inductive in Tables 4.1 and 4.2. The acceptance range is
500 ohm load for monopolar modes. given in both Watts and Amps to accommo-
Note: Micro Bipolar is particularly sensitive to date available test equipment. It is not neces-
the load resistance. A 50 ohm load should be sary to test for both power and current.
used for checking power to obtain the best Table 4.1 Monopolar Cut Mode RF Output
Power Accuracy
Mode Load (ohms) Power Setting Watts (min) Watts (max) Amps (min) Amps (max)
Pure 500 20 17 23 0.184 0.214
500 100 90 110 0.424 0.469
500 200 180 220 0.600 0.663
Blend 500 20 17 23 0.184 0.214
500 100 90 110 0.424 0.469
500 200 180 220 0.600 0.663
Table 4.2 Monopolar Coag Mode RF Output Power Accuracy
Mode Load (ohms) Power Setting Watts (min) Watts (max) Amps (min) Amps (max)
Standard 500 20 17 23 0.184 0.214
500 50 45 55 0.300 0.332
500 80 72 88 0.379 0.420
4) Disconnect the ESU tester from the unit. 6) Perform the bipolar power tests indicated in
5) Use test leads to connect the ESU tester to Table 4.3. This table only provides the mini-
the Bipolar Accessory outputs. mum number of points to be tested.
4-2
4.5.4 RF Leakage Measurement to the patient and operating room staff through
unintended paths, which can cause injury. RF
NOTE: To ensure accuracy when making leak-
leakage occurs because the total energy in the
age measurements, perform all leakage testing
output voltage waveform is provided with a con-
using methods and instruments that are com-
ductive path through stray parasitic capacitance
pliant with the prcedures outlined in Section
distributed within the generator and along the
19 of IEC60601-2-2 (Particular Requirements
length of the leads.
for the Safety of High Frequency Surgical
Equipment). Table 4.4 presents the allowed RF leakage currents
to ground.
RF Leakage can present a hazard in the operating
room because electrosurgical currents can flow
Equipment:
• ESU Tester with RF Leakage function -OR- TIONS SHOULD BE KEYED USING
• 0-250 is RF Ammeter with a 200 ohm 10 W 3” OR LESS WELL-INSULATED
Non-inductive Resistor JUMPER. USE OF AN INSULATING
ROD TO INSERT THE JUMPER IS
• Patient Plate Adapter Plug
ADVISED TO PREVENT RF BURNS.
• 2 - Test leads, 1 m max. Length
3) One at a time, connect test setup to each RF
• 3 - Test leads, 10 cm max. Length output terminal indicated in Table 4.4 and
• Wooden table approximately 1 m from floor. activate the unit using the corresponding
NOTE: Use a measuring device that meets IEC command. Confirm no meter readings exceed
specification for RMS measured over one second. the specified maximum. Hand controlled
Coag activations are accomplished by con-
Procedure:
necting a jumper between the left jack and
1) Ensure that the unit is fully assembled and all center jack of the desired hand switched acces-
fasteners are tight. sory jack.
2) Place the ESU tester or meter with resistor on RF leakage should also be measured between inac-
the table so that they are at least 0.5m away tive outputs and the Dispersive Electrode connec-
from the unit under test and any other con- tion. The procedure is as follows:
ductive surface.
1) Set the unit for full power for the modes
3) Set the unit for full power for the modes noted in Table 4.5. Connect the ESU tes-
noted in the table. Connect the ESU tes- ter according to manufacturer’s instructions
ter in accordance with the manufacturer’s - OR- the 200-ohm non-inductive resistor in
instructions -OR- connect the 200-ohm non- series with the 250 mA RF ammeter to the
inductive resistor in series with the 250 mA Dispersive Electrode connection on the front
RF ammeter to the Equipotential Ground panel. Also make sure there are no connec-
Connection on the Rear Panel. Also make tions to any output other than the one you
sure there are no connections to any output are measuring.
other than the one you are measuring.
2) One at a time, connect this series combina-
WARNING: HAND CONTROL ACTIVA- tion to each RF output terminal indicated
4-3
in Table 4.5 and activate the unit using the corresponding command. Confirm that no meter readings
exceed the specified maximum.
Table 4.5 Allowable RF Leakage Current - Inactive Monopolar Outputs
MEASURED TERMINAL ACTIVATED ACCESSORY MODE RF LEAKAGE (Ma)
Combination Monopolar Active Hand Controlled Standard Coag < 50
Combination Monopolar Active Bipolar Footswitched Macro < 20
Hand Controlled Active Combination Monopolar Standard Coag < 50
Hand Controlled Active Bipolar Footswitched Macro < 20
Bipolar Left Right Hand Controlled Standard Coag < 48
4.5.5 Line Frequency Leakage Circuit ground and Neutral (Low Mains) must be
connected together for Mains leakage testing.
CAUTION: To prevent RF current from destroy-
ing the test equipment and/or affecting leakage Equipment:
readings, set all power settings to zero. These tests are performed most conveniently using
WARNING: ELECTROCUTION HAZARD. any good quality biomedical electrical safety tester.
USE OF AN ISOLATED MAINS POWER Procedure:
SOURCE IS RECOMMENDED WHEN 1) Connect the electrical safety analyzer to make
OPENING THE MAINS GROUND the measurements indicated in Table 4.7.
DURING THE FOLLOWING SAFETY 2) Mode: Measure leakage for Bipolar to Neutral
TESTS. and Chassis to Neutral.
Table 4.7 Line Frequency Allowable Leakage - Inactive
RF output to Neutral LINE GND LIMIT max
Equipotential Ground Normal Closed 30 µA
Equipotential Ground Reversed Closed 30 µA
Equipotential Ground Normal Open 270 µA
Equipotential Ground Reversed Open 270 µA
Dispersive Electrode Normal Closed 15 µA
Dispersive Electrode Reversed Closed 15 µA
Dispersive Electrode Normal Open 15 µA
Dispersive Electrode Reversed Open 15 µA
Bipolar Output* Normal Closed 15 µA
Bipolar Output* Reversed Closed 15 µA
Bipolar Output* Normal Open 15 µA
Bipolar Output* Reversed Open 15 µA
*Measure the Bipolar Output with Bipolar connections shorted together.
4-4
5) Since the Sabre Genesis™ monopolar active see Table 4.8; while that output is activated
outputs are disconnected by relays when the in Cut by the appropriate footswitch or hand
unit is not activated, active-to-neutral leakage control jumper. Hand control cut activations
tests must be performed with the unit acti- are accomplished by connecting a jumper
vated in order to be valid. between the two outer jacks of where the
6) With all power controls set to zero, measure handcontrolled accessory is plugged into the
the leakage current as in step 1 from each of unit.
the three active output terminals to neutral;
Table 4.8 Line Frequency Allowable Leakage - Active
RF output to Neutral LINE GND ACTIVATION LIMIT max
Combination Monopolar Active Normal Closed Combination Monopolar Cut 15 µA
Combination Monopolar Active Reversed Closed Combination Monopolar Cut 15 µA
Combination Monopolar Active Normal Open Combination Monopolar Cut 15 µA
Combination Monopolar Active Reversed Open Combination Monopolar Cut 15 µA
Hand Controlled Active Normal Closed Hand Controlled Cut 15 µA
Hand Controlled Active Reversed Closed Hand Controlled Cut 15 µA
Hand Controlled Active Normal Open Hand Controlled Cut 15 µA
Hand Controlled Active Reversed Open Hand Controlled Cut 15 µA
4.5.6 Automatic Return Monitor (A.R.M.) 3) Dual Electrode Lower Limit: Set the DRB
Check to 15 Ohms and verify the Dual Dispersive
Electrode Status/Alarm Indicator is Green.
A.R.M. has two specific ranges that will be tested
initially and then the circuit will be tested to verify 4) Single Electrode Upper Limit: Set the DRB
that the circuit measures dispersive electrode resis- to 7 Ohms, then reset A.R.M. and verify the
tance correctly. For this testing, only a Decade Single Dispersive Electrode Status/Alarm
Resistance Box (DRB) and a dispersive electrode Indicator is Green.
cable adapter are required. Connect the DRB to 4.5.7 Output Coupling Capacitor Check
the Dispersive Electrode Receptacle using the dis-
persive electrode cable adapter. WARNING: ENSURE ALL POWER
SETTINGS ARE AT 0 WATTS BEFORE
A.R.M. may be reset by disconnecting the dis-
CONDUCTING THIS TEST TO PREVENT
persive electrode connector or adjusting the DRB
INJURY TO PERSONNEL AND DAMAGE
above 10K Ohms until the Single and Dual
TO TEST EQUIPMENT.
Dispersive Electrode Status/Alarm Indicators flash
red in alternating fashion. Allow approximately NOTE: Not all capacitance meters will read prop-
two seconds after the DRB is changed before pro- erly for this test. The test frequency should be at
ceeding to the next step in the procedure. A.R.M. or below 1 kHz for best accuracy. The following
indicators not mentioned in the procedure must meters have been tried successfully: Fluke 189,
be off for each test. Extech 285, Sencor LC75 and HP4284A (1 kHz
setting or below).
1) Dual Electrode Alarm Limit: Set the DRB to
158 Ohms, then connect it to the Dispersive 1) Connect shorting plug to banana adapter to
Electrode Receptacle and verify that the the two pin Dispersive Electrode Receptacle.
Single and Dual Dispersive Electrode Status/ Use 6” or shorter test leads to connect a
Alarm Indicators flash red in alternating fash- capacitance meter between the shorting plug
ion. adapter and the footswitched Combo plug.
2) Dual Electrode Upper Limit: Set DRB to 2) Measure capacitance and confirm it is less
140 Ohms and verify that the Dual Dispersive than 0.2 nF.
Electrode Status/Alarm Indicator is Green. 3) Confirm cut power is set to 0, then activate
4-5
and confirm capacitance is between 0.6 and system configuration DIP switch details.
0.9 nF. With this configuration set, turn on power while
4) Do not activate for this bipolar test. Move pressing and holding both Speaker Volume Up/
test leads to Bipolar Output Accessory Down Keys. Release these Keys when CAL
Receptacles. Confirm capacitance is between appears in the Monopolar Cut Power Digital
2.2 and 2.5 nF. Display and the software revision appears in the
Monopolar Coag Power Digital Display. CAL
4.6 System Calibration and the software revision may persist in the dis-
The Sabre Genesis™ is calibrated during manu- plays for a few seconds after the Volume Adjust
facture using equipment traceable to National Keys are released. The display will then provide
Institute of Standards & Technology (NIST) an indication of the calibration status:
standards and should retain its accuracy for a long • “ALL” will appear in the Monopolar Cut
period of time. Recalibrate the generator after Power Digital Display if the calibration mem-
repair or if it performs out of specification. Check ory is empty.
the calibration in normal operating mode and only • “nEr” will appear in the Monopolar Cut
perform calibration if errors are identified. Power Digital Display, where “n” indicates
The Sabre Genesis™ stores its calibration in non- how many major modes require calibration,
volatile semiconductor memory, so the calibration will be displayed if only particular modes
will be retained without any action on the part of require calibration. All of the minor mode
the user or maintenance staff. Calibration should indicators will be illuminated and the minor
be checked in normal operating mode during modes needing calibration will flash.
annual preventative maintenance to ensure there is • “[U”, “[0A”, “bP”, or “Pad” will appear in
no change. the Monopolar Cut Power Digital Display to
Calibration is required when: indicate the major mode when only minor
• “Err 138”, “Err 139”, or “Err 140” occurs: An modes under that major mode require calibra-
error is detected with the stored calibration tion. All of the minor mode indicators will
values. be illuminated and the minor modes needing
• “Err 143” or “Err 321” occurs: One or more calibration will flash.
modes require calibration. • “[U” will appear in the Monopolar Cut Power
• “Err 135” occurs: An error is detected with Digital Display with the Pure Cut Mode
stored ARM calibration values. Indicator illuminated if all modes are cali-
brated.
• Either the Control/Display Board assembly
(Conmed P/N 61-6991) or the output RF For all except the last of these, a single Press and
assembly (Conmed P/N 61-8102) is replaced. release of the Tone Loudness Adjustment Down
Key is required to proceed past this point on the
• Calibration differences are found during pre-
menu. After pressing this key, “[U” will appear in
ventative maintenance.
the Monopolar Cut Power Digital Display with
Refer to Figure 4.1 for calibration process flow. the Pure Cut Mode Indicator illuminated.
4.6.1 Calibration Preliminaries 4.6.2 Selecting the Mode to Calibrate
Sabre Genesis™ calibration occurs in Calibration Press the Monopolar Cut Power Adjustment Keys
Operating Mode, which is entered by setting to select the major mode to calibrate as displayed
the system configuration DIP switches on the in the Monopolar Cut Power Digital Display. The
Control/Display Board. Set the Calibration sys- selections are “[U” for Cut, “[0A” for Coag, “Bp”
tem configuration DIP switch (Control/Display for Bipolar, or “PAd” for the Dispersive Electrode
Board SW2.2) to the ON (UP) position and the A.R.M. connection. If any of the minor modes
Test system configuration DIP switch (Control/ under these major modes are not calibrated, the
Display Board SW2.1) to the OFF (DOWN) displayed major mode will flash.
position. Other configuration DIP switch settings
Select the monopolar minor mode by pressing the
positions will not affect this. See Section 4.8 for
appropriate Mode Select Key.
4-6
Calibration
[AL Lxx
[u [0A bP Pad 10
Power off
End
4-7
4.6.3 Calibrating a Monopolar Mode 4.6.4 Calibrating Bipolar Modes
This section applies to the Pure Cut, Blend, The Bipolar modes are calibrated using a method
Standard Coag. that is very similar to the Monopolar modes.
Calibration may be performed by measuring cur- Calibration may be performed by measuring cur-
rent or by measuring power. To select between rent or by measuring power. To select between
calibration using measured current and measured calibration using measured current and measured
power, press the Bipolar Power Adjustment Keys power, press the Bipolar Power Adjustment Keys
to set the calibration units to either “A” for current to set the calibration units to either “A” for current
or “P” for power. or “P” for power.
The resistance to be used for calibration will The resistance to be used for calibration will
appear in the Monopolar Coag Power Digital appear in the Monopolar Coag Power Digital
Display. Connect a resistor of this value between Display. Connect a resistor of this value between
the output connection that is being used for cali- the two active connections in the Bipolar
bration and both pins on the Two-Pin Dispersive Accessory Receptacle.
Electrode Receptacle. Press and release the Tone Loudness Adjustment
Press and release the Tone Loudness Adjustment Down Key to begin calibration. After this key is
Down Key to begin calibration. After this key is pressed, the target level appears in the Monopolar
pressed, the target level appears in the Monopolar Coag Power Digital Display.
Coag Power Digital Display. Activate using the Bipolar Footswitch. Power
Activate using the appropriate Handswitch or will now flow to the resistor. While monitoring
Footswitch. Power will now flow to the resis- either the current or the power, adjust the power
tor. While monitoring either the current or the up or down using the Monopolar Coag Power
power, adjust the power up or down using the Adjustment Keys until the measured value is as
Monopolar Coag Power Adjustment Keys until close to the target level as possible. The activation
the measured value is as close to the target level must be maintained for a minimum of 2 seconds
as possible. The activation must be maintained to ensure the calibration is valid. After the power
for a minimum of 2 seconds to ensure the calibra- is properly adjusted, release the activation. Press
tion is valid. After the power is properly adjusted, and release the Tone Loudness Adjustment Down
release the activation. Press and release the Tone Key to complete the calibration sequence for the
Loudness Adjustment Down Key to complete the bipolar mode.
calibration sequence for the selected minor mode. After a Bipolar minor mode has been calibrated,
To complete the Blend calibration, activate again the associated Bipolar minor mode indicator
using the appropriate Handswitch or Footswitch. will quit flashing. When the Bipolar mode has
Power will now flow to the resistor. While moni- been calibrated, the major mode indicated in the
toring either the current or the power, adjust the Monopolar Cut Power Digital Display will quit
power up or down using the Monopolar Coag flashing.
Power Adjustment Keys until the measured value
4.6.5 Calibrating A.R.M.
is as close to the target level as possible. The
activation must be maintained for a minimum A.R.M. is calibrated against a pair of known resis-
of 2 seconds to ensure the calibration is valid. tances.
After the power is properly adjusted, release the Press and release the Tone Loudness Adjustment
activation. Press and release the Tone Loudness Down Key to begin calibration. The resistance
Adjustment Down Key to complete the Blend to be used for calibration will appear in the
calibration sequence. Monopolar Coag Power Digital Display. Connect
After a minor mode has been calibrated, the a resistor of this value ±1% between the two
associated minor mode indicator will quit flash- active connections in the Two-Pin Dispersive
ing. When all of the minor modes within a major Electrode Receptacle.
mode have been calibrated, the major mode Calibrate the particular value connected by press-
indicated in the Monopolar Cut Power Digital ing one of the Bipolar Power Adjustment Keys.
Display will quit flashing. When the value is accepted, a two-tone sequence
4-8
will sound and the resistance in the Monopolar Window will next display “Err”; the Coag
Coag Power Digital Display will quit flashing. window will display the error code (a numeric
Now scroll to the other pair of known resistances value); and the Bipolar Window will display
using the Monopolar Coag Power Adjustment the storage location of that error code.
Keys. The resistance to be used for calibration Last Fault display example:
will appear in the Monopolar Coag Power Digital
Display. Connect a resistor of this value ±1% Err 381 1
between the two active connections in the Two- 3) Scroll through the stored error codes using
Pin Dispersive Electrode Receptacle. the Bipolar Power Adjustment Keys. The
Calibrate the particular value connected by again error codes are stored Last in, First out. A “1”
pressing one of the Bipolar Power Up Adjustment in the Bipolar Display shows the last error
Keys. When the value is accepted, a two-tone that occurred. Press the Bipolar Up key and
sequence will sound and the resistance in the a “2” will be displayed if more than one error
Monopolar Coag Power Digital Display will quit occurred.
flashing. 4) To retrieve the settings when the error
Press and release the Tone Loudness Adjustment occurred, it is necessary to have a
Down Key to complete A.R.M. calibration. Handcontrol accessory connected. Press both
After A.R.M. has been calibrated, the major mode Cut and Coag activation switches and the
“PAd” indicated in the Monopolar Cut Power Display Panel will show the system settings
Digital Display will quit flashing. when the error occurred.
Turn power off and set the Calibration system As errors occur, fault codes from earlier errors are
configuration DIP switch (Control/Display erased in a last-in-first-out fashion. While it is not
Board SW2.2) to the OFF (DOWN) position. absolutely necessary to clear the older codes, clear-
See Section 4.8 Displaying Optional System ing the codes may be desirable in some situations.
Configuration for system configuration DIP • Pressing the Monopolar Cut Power
switch details. The ESU will be ready for normal Adjustment down Key followed by the
operation the next time the power is turned on. Tone Loudness Adjustment Down Key will
clear the entire fault code memory. The cut
4.7 Last Fault Code Retrieval & Clear window will display “[Lr” when codes are
Up to 50 error (Err) and accessory (A[[) codes cleared.
can be stored in memory for retrieval. When
4.8 Optional System Configuration
retrieving the error codes, it is also possible
to retrieve the system settings when the error The eight-position configuration DIP switch (S2),
occurred. located on the Control/Display Board Assembly
allows a qualified service technician to change
4.7.1 Last Fault Code Retrieval
some of the factory default settings. The default
1) Turn on power while pressing and hold- switch is only read during Power on Self Test
ing both Volume Adjust Select Keys. (POST) or when the system is powered on, so
Release these Keys when LF[ appears in any changes to the switch positions should be
the Monopolar Cut Power Digital Display made with the main power off. Each switch is
and the software revision appears in the OFF in the down position and ON in the up
Monopolar Coag Power Digital Display. LF[ position. Relevant information for each switch is
and the software revision may persist in the described in Table 4.9 and the positions are illus-
displays for a few seconds after the Volume trated in Figure 4.2.
Adjust Select Keys are released. This action
will place the system in the Last Fault Code
Mode (LFC). Electrosurgical outputs cannot
be activated while the system is in LFC.
2) If any errors are stored in memory, the Cut
4-9
Table 4.9 DIP Switch Settings
Config. Title / Display Default Description for Description for On
Switch Element Off
Position
1 TEST / Cut 100’s Off Run Mode. Activates Test Mode, which inhibits most
Required position of the system level monitoring for trouble-
for surgery. shooting purposes. When this switch is
ON, both Volume Adjust Select Keys on
the Display Panel must be pressed until
888 appears in the Monopolar Cut Power
Digital Display and the software revision
appears in the Monopolar Coag Power
Digital Display. 888 and the software revi-
sion may persist in the displays for a few
seconds after the Bipolar Mode Select Keys
are released. If both Bipolar Mode Select
Keys are not pressed, and Err 100 is dis-
played and the power must be cycled.
2 CAL/ Cut 10’s Off Run Mode. Required for calibration of output power
Required position and A.R.M. When this switch is ON,
for surgery. both Volume Adjust Select Keys on the
Display Panel must be pressed until [AL
appears in the Monopolar Cut Power
Digital Display and the software revision
appears in the Monopolar Coag Power
Digital Display. [AL and the software revi-
sion may persist in the displays for a few
seconds after the Bipolar Mode Select Keys
are released. If both Bipolar Mode Select
Keys are not pressed, and Err 100 is dis-
played and the power must be cycled.
3 Not Used / Cut 1’s Off Not Used Not Used
4 Not Used / Coag Off Not Used Not Used
100’s
5 LAST / Coag 10’s Off Defaults to Pure Defaults all modes and power levels to the
Cut, Standard last activated settings from the last time the
Coag, and Micro system was powered down.
Bipolar and sets
all power levels to
zero (0W) each
time the system is
initialized.
4-10