DSO2D15 Suggest adding decode for USB 2.0

BufordTJustice

I have a DSO2D15 and would like to know to decode USB2.0 low-speed and full-speed.  With high-speed USB 2.0 being 480Mbit/s this may not be possible for this scope.  The data being sent over the USB cable to a Microcom printer is a barcode and about six words.  I have spliced into the USB cable so I could attach probes.  I have probe 1 connected to the D+ and probe 2 connected to the D- of a USB cable.  I can see data on both probes being continuously sent.  I can print as before, but have not found a way to trigger on the data being sent when I press the print command.  IIC decode came the closest to displaying what I wanted.  The USB 20.pdf shows PID types that I hope to sync off of.  They can be found at http://www.poweredusb.org/pdf/usb20.pdf, page 196, chapter 8 protocol layer.  Thank you for your consideration and suggestions.

kevinmartin

The DSO2D15 is a digital oscilloscope with a bandwidth of 200 MHz and a maximum sample rate of 1 GS/s. It has two channels and a maximum record length of 10 Mpts.

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