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The USC card needs up to three power supplies which are provided via the 37-pin connector of the USC card:
•USC main power
•USC opto-coupled outputs and inputs (Opto_Out and Opto_In)
•Optionally: Opto-coupled laser-ports
By default the laser-ports are powered internally. If you want to use opto-isolated mode of the laser-ports you need to adjust EXT VCC solder jumpers on the USC card. The table below shows you how to wire the power supplies to the 37-pin connector of your USC card:
Power supply |
USC 37-pin connector |
Input [Volts] |
Default state |
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|---|---|---|---|---|
USC Main |
EXT_VCC |
pin 24 |
+ 5 |
USB powered (JP1 closed), but not recommended. |
GND |
pins 14, 15, 25 |
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USC Opto_Out |
Opto_VCC |
pin 5 |
+ 5 .. + 24 |
Not powered. |
Opto_GND |
pin 6 |
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USC Laser-Ports |
EXT_LASER_VCC |
pin 11 |
+ 5 |
Powered via USC main. |
EXT_LASER_GND |
pin 30 |
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Table 14: USC power connection