Teledyne LeCroy Conquest User Manual - Users Manual - Manual (Page 145)

Device Emulation (Optional)
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Independent Descriptors
To define Independent descriptors, enter a binary Descriptor Type, click the
check box for that Descriptor Type, and enter the data (up to 256 bytes) to
return in response to a Get Descriptor request. Responses support requests
with index 0.
Note: You can set only the six most significant bits of the Descriptor Type. Do not
set the descriptor type to the same value as any standard USB descriptor.
String Descriptors
To define String Descriptors, enter a value string (up to 128 characters) in the
String Descriptors text box and click a check box to assign it.
Class Requests
To define a Class Request, click a request name check box and enter the data
for the Request Value. Choose the Data Transfer direction and Recipient.
Importing Scan Descriptors
You can import previously defined Scan Descriptor *.sdv files by clicking the
Import button and choosing an appropriate file from the SDV folder.
Non Standard Clocks
If the device is to operate at a non-standard clock rate, click the Settings tab
to display the clock selection dialog.
Figure 103 Using Non Standard Clocks
To use a non-standard clock, click the Nonstandard check box in the Clocks
area and then choose one of the pre-set clock values available or check
External and apply an external clock.
You can apply an external clock in ranges of 400KHz - 8MHz for High Speed
and 1KHz-100KHz, 400KHz - 8MHz for Full/Low speed device emulation.