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USB USB-IF, Operation Manual

The USB USB-IF Operation Manual is a comprehensive guide that provides detailed instructions on the setup and usage of our cutting-edge USB product. Easily downloadable for free, this user manual offers invaluable information for optimal performance. Access it on 88.208.23.73:8080 today, and unleash the full potential of your USB device.

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Operations Manual

USB-IF

Over-Current Test Fixture

USB Over-Current
Test Fixture

January 14, 2013

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Summary of Contents for USB-IF

Page 1: ...Operations Manual USB IF Over Current Test Fixture USB Over Current Test Fixture January 14 2013 Revision 1 0 ...

Page 2: ...should come with the following Qty 1 Over Current Test Fixture Please examine package contents upon receiving your fixture kit for these items Required Test Equipment Ammeter Voltmeter Load fixtures used for USB voltage drop testing Host or Hub to be tested ...

Page 3: ...tion must not be triggered on any port sourcing less than the minimum required current defined for that port Above the minimum current limitations the over current trigger level is vendor specific The USB IF encourages all vendors to set the over current limitation with purposes of safety in mind If a downstream port can safely source the current it should do so even if the current exceeds USB spe...

Page 4: ...ipated when drawing such a large load is relatively high the fixture will automatically turn off after 30 seconds in this situation the Safety Auto Shut Off Indicator light will glow To reset the fixture simply detach from the USB port and reattach Figure 1 USB Over Current Test Fixture Measurement Jacks Safety Auto Shut Off Indicator Current Control Knob USB Plug ...

Page 5: ...ting an over current condition Turning the Current Control Knob clockwise will increase current draw and counter clockwise will decrease current draw If the Safety Auto Shut Off Indicator illuminates during use simply detach and reattach the fixture to start drawing current again Figure 2 Standard Topology Note Be sure the digital Ammeter probes are placed in the current measurement jacks and that...

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