Calibrating the LigaSure Generator
Setup, Tests, and Adjustments
LigaSure Vessel Sealing Generator Service Manual 6-17
Preparing for Calibration
Equipment
• Bipolar footswitch
• Bipolar adapter and bipolar cable (E0509)
• True RMS voltmeter (Fluke 8920A or equivalent)
• Current transformer (Pearson 411 or equivalent)
• Noninductive power resistors (such as Dale NH-250 with these values: 10,
500, and 1000 ohms)
• Personal computer (PC) with RS-232 cable or terminal capable of RS-232
communication at 9600 baud, 8 data bits, 1 stop bit, and no parity
Before Calibration
1. Before turning on the power, check the CPU battery voltage from TPI
(ground) to the body of the battery, and record it.
2. Attach the computer to the generator: Connect a standard DB 9 serial cable to
your computer and to the generator serial port.
3. On your computer, enter your communication program. Configure your
computer for 9600 baud, 8 data bits, 1 stop bit, and no parity – with no
handset connected.
4. Turn the LigaSure generator power on and confirm that a proper serial
interface exists by checking the response message from the LigaSure
generator.
5. If the battery has been replaced, expect to see error code 105.
6. Keep the serial cable on throughout calibration.
NOTE: If the unit falls out of specification or exhibits alarms during power
output tests, complete the calibration procedure.
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