RF Board
Principles of Operation
LigaSure Vessel Sealing Generator Service Manual
5
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27
The following table identifies the RF board functional interfaces and connective
jacks:
Interface
Location
Pins in
Connector
Description
Low Voltage
Power Supply
J7
4
Connects the LVPS power input
to the RF board for distribution to
all other interconnecting
assemblies that r5 V, ±
12 V DC power
Controller
J8
96
Connects the control board,
providing all communication
necessary to develop and control
the LigaSure generator RF
energy output
High Voltage
Power Supply
J6
10
Connects all necessary control
signals originating from the
microcontroller to generate
HVDC source power for the RF
generator
Footswitch
J4
20
Provides a signal interface to the
footswitch audio board, routing
footswitch RF request and audio
tone control signals between the
footswitch and control boards
Handswitch (RF
output
receptacles)
J10, J11
5
Couples all handswitching
requests to generate
macrobipolar and bipolar RF. The
optoisolator handswitching
signals interface directly with the
J8 microcontroller connector.
Expansion Port
J3
15 (DSUB)
Interfaces low voltage power and
control signal information to
operate an externally connected
bipolar monitor device. The
control signals interface directly
between the microcontroller and
the bipolar monitor.
RS-232
J1
9 (DSUB)
Provides external RS-232
communication link between a
personal computer and the
control board to allow calibrating
the LigaSure generator and to
provide statistical information
about its operating parameters.
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