Sun Microsystems V2.0 Welding System User Manual


 
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critical during the USB enumeration which occurs when plugging in a new device. During this
phase the SPOT may only draw 20% (100mA) of its full power requirements. It is known that a
SPOT with the demo sensor board requires more power than this during startup and therefore does
not work on USB power alone. For the hardware configurations in the kit this is not an issue, but for
custom configurations this constraint should be taken into account.