Smart Connector Boards
5-28 LigaSure Vessel Sealing Generator Service Manual
Smart Connector Boards
The smart connector boards provide the necessary processing electronics to
determine that the correct instruments are attached to the respective LigaSure
vessel sealing and bipolar output receptacles. Each output receptacle uses a smart
connector board. The board optically reads the attached instrument and generates
a 6-bit address code read by the microcontroller to establish a GO_NOGO, green
and red smart lamp illumination. A bicolor LED, OPT7, provides the smart
indicator status:
• Green lamp indicator accepts the mated instrument. The microcontroller
allows RF energy delivery with a footswitch or handswitch request.
• Red lamp indicator shows that the mated instrument is invalid or improperly
seated. The microcontroller disables the RF output, prohibiting RF energy
delivery with a footswitch or handswitch request.
The smart read process involves optical coupling to the mated instrument plug.
Six optical sensors, OPT1 through OPT6, generate the 6-bit smart address code.
Each optical sensor incorporates an infrared (IR) emitter and receptor device. The
IR devices read the mated plug surface for code identification:
• If the emitter sends an infrared beam to a black area on the plug, the surface
reflects minimum light to the receptor. In response, the smart board bit
address output sends a high output (+5 V) signal to the microcontroller.
• If the emitter sends an infrared beam to a blue area on the plug, the surface
reflects maximum light to the receptor. In this case, the bit address output
sends a low, zero volt, level logic signal to the microcontroller.
Comparator devices U2, U5, and U6 provide high discrimination read accuracy of
the sensor signals. Signal FET Q1 turns on all six optical devices simultaneously
when the microcontroller sends a +5 V signal to the Q1 gate with the BANK 1
command.
All communication to the smart board passes through connector J19. This
connector interfaces with the display board, which passes smart connector signals
through without processing. Display connector J1 exports the smart connector
signal to connector J1 on the microcontroller, which processes the signal for a
smart read.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
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