> >> You should also run a similar test when you connect the device through >> a USB-2 hub. In fact, you should run two tests. In one test, connect >> the analyzer to the cable segment between the computer and the hub; in >> the other test, connect the analyzer to the cable segment between the >> hub and the device. >> > I connected the USB analyzer to the cable segment between the computer and the external USB-2 hub(devices are attached to this external USB-2 hub). In this scenario , got the stall in usbmon trace, but not in analyzer log. But USB analyzer log shows “Incomplete IN transaction”. Please check the attached "Elisys_Usb_log.png". Incomplete IN transaction 2 1 INCOMPLETE HS No data 884.626 273 217 Incomplete IN transaction 2 1 INCOMPLETE HS No data 884.882 309 000 Incomplete IN transaction 2 1 INCOMPLETE HS No data 885.138 344 750 Incomplete IN transaction 2 1 INCOMPLETE HS No data 885.394 380 533 Incomplete IN transaction 2 1 INCOMPLETE HS No data 885.650 416 300 Incomplete IN transaction 2 1 INCOMPLETE HS No data 885.906 452 050 Incomplete IN transaction 2 1 INCOMPLETE HS No data 886.162 487 833 Incomplete IN transaction 2 1 INCOMPLETE HS No data 886.418 523 583 Incomplete IN transaction 2 1 INCOMPLETE HS No data 886.674 559 367 Incomplete IN transaction 2 1 INCOMPLETE HS No data 886.930 595 117 Incomplete IN transaction 2 1 INCOMPLETE HS No data 887.186 630 883 Incomplete IN transaction 2 1 INCOMPLETE HS No data 887.442 666 667 Incomplete IN transaction 2 1 INCOMPLETE HS No data 887.698 702 417 Does it gives any clue? For the second test(connect the analyzer to the cable segment between the hub and the device): Is it possible with single external USB hub? Thanks, Naveen
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Elisys_Usb_log.png
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