VISA USB control in

[289126182]

How to confirm the index,value,request type,request of the the USB control in fouction.And please give me some advice about the control pipe.

[Intaris]

Paper accepts any kind of writing.  Asking about how to use paper won't help you to learn a new language.

USB is a protocol.  How it is used exactly depends on the language your device supports (command set).  Each device is different.

Everything else (standard USB commands) are listed in Chapter 9 of the USB specification on the website www.usb.org under http://www.usb.org/developers/docs/

[289126182]

Hi, How or where can I get the Request,Request type,value and index from my device? How can I make use of the control pipe?

[Albert.Geven]

please read the answer you already got