RE: [Discuss-gnuradio] LED not blinking

[Ruben Undheim]

The circuit draws about 0.9 A when connected, The two Analog Devices chips 
gets quite hot.

It still keeps informing the computer about a new high speed USB device, but 
it can't get further. The LED is still not blinking.
Is there anybody that can suggest what's wrong with the board, or will I 
have to return it for fix?

Ruben

> From: "Ruben Undheim" <address@hidden>
> To: address@hidden
> Subject: [Discuss-gnuradio] LED not blinking
> Date: Fri, 07 Jul 2006 20:33:12 +0200
>
> I have just received the USRP, connected the basicrx and basictx, installed 
> all the software, connected the USB 2.0 cable and connected power to it 
> with the USRP power adapter.
> But when I read dmesg I only see these messages:
>
> [17179697.552000] usb 3-5: new high speed USB device using ehci_hcd and 
> address 2
> [17179700.664000] usb 3-5: device descriptor read/64, error -110
> [17179715.884000] usb 3-5: device descriptor read/64, error -110
> [17179716.104000] usb 3-5: new high speed USB device using ehci_hcd and 
> address 3
> [17179719.216000] usb 3-5: device descriptor read/64, error -110
> [17179734.436000] usb 3-5: device descriptor read/64, error -110
> [17179734.656000] usb 3-5: new high speed USB device using ehci_hcd and 
> address 4
> [17179739.676000] usb 3-5: device descriptor read/8, error -110
> [17179744.800000] usb 3-5: device descriptor read/8, error -110
>
> The LED on the board is not blinking, and there's no device listed in the 
> lsusb output.
>
> But after about an hour fiddling around, suddenly the LED started blinking, 
> I got the right messages from dmesg, and i could read the new device in 
> lsusb. When I then tried to start some of the programs, it tried to reach 
> the USRP and then it suddenly stopped blinking again. The same error 
> messages appeared in the dmesg output, and it disappeared from the lsusb 
> output. After that it has not started blinking again. I can't get it to 
> work. I can feel that the ALTERA chip on the middle is getting a bit warm, 
> so I assume that it's doing something, but I don't know what.
> Isn't it supposed to blink with only the power outlet connected to it ??
>
> Thanks for help!
> Ruben
>
>
>
>
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