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Teledyne LeCroy Detective - Users Manual User Manual

Page 43

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CATC

CATC Detective User’s Manual

Version 2.21

Page 40

4.8.2.2 Decoded Hub Class Requests

Decoded USB Hub Descriptor

If the decoded standard request is GET_DESCRIPTOR, a button called “Show Descriptor Data”
appears in the USB Device Request Data dialog box (as in the earlier example). Selecting this
button brings up a form similar to the following, displaying the returned Hub descriptor, decoded
according to USB Specification 1.0:

The scrollbar at the right side of the form permits viewing of all the entries. If the device only
sends a portion of the data, the Detective software marks missing entries with “N/A”.