Axel MAX MKII, User Manual, Page: 72 / 78

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| TECHNICAL APPENDIX 72
12.5 APPENDIX E - GPIO PORT
The 15 pin HD SubD GPIO connector on the back of the Falcon XT features four General Purpose inputs and four General Purpose binary outputs. The inputs are polarised
Optocoupler inputs, while the outputs are Open Collector outputs. They can be used to send commands to the device and to carry out specific functions. The inputs feature
polarized photo couplers on each input and a 150 Ohm protection resistor is always installed in series inside. The maximum current that can circulate on each photo coupler is
20mA. The voltage supplied between pin 9 and pin 1 is +5 V dc non-stabilised.