Performance Characteristics
Technical Specifications
LigaSure Vessel Sealing Generator Service Manual 4-5
RF Activation Port
The RF activation port is a subminiature phone jack attached to the contacts of a
small relay. The contacts close when you activate the generator, but remain open
at all other times. This port provides a means to tell other equipment that the
generator is producing RF. This may be useful when making EEG or ECG
measurements.
Expansion Port
This 15-pin connector supports the following signals:
• pin 2 – isolated transmit (serial data output transmit line)
• pin 3 – isolated receive (serial data input receive line)
• pin 5 – isolated ground (reference for transmit and receive)
• pin 7 – regrasp indicator (active high)
• pin 8 – RF_ACT indicator (active high when RF is active)
• pin 9 – RF disable: input signal that, when activated by an external device,
disables active RF output
• pin 10 – RF current: output signal proportional to active RF current at 0.8
amp/volt
• pin 11 – RF voltage: output signal proportional to active RF voltage at 205
Vrms/volt
Expansion power (from the low voltage power supply):
+ 5 V (pin 6), – 12 V (pin 14), + 12 V (pin 15), and ground (pins 12 & 13)
Rated fuse current:
1 Amp, Slo Blo, @ +5 Vac
0.25 Amp, Slo Blo, @ ±12 Vac
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