Re: [Discuss-gnuradio] SOLVED: usrp1 suddenly stops communicating

[Patrik Tast]

Hi All,

OUR mistake ofcource!

We were feeding the USRP only 5 VDC and bet it dropped < 5VDC when 
queried.....

Patrik

----- Original Message ----- 
From: "Alexandru Csete" <address@hidden>
To: "Patrik Tast" <address@hidden>
Cc: <address@hidden>; "Jamie Morken" <address@hidden>; 
"Jerry" <address@hidden>
Sent: Thursday, August 05, 2010 12:31
Subject: Re: [Discuss-gnuradio] usrp1 suddenly stops communicating


On 5 August 2010 00:30, Patrik Tast <address@hidden> wrote:
> Hi All,
>
> The free USRP1 has suddenly decided to stop communicating. We suspect 
> (from
> the output)
> that it might be an USB problem?
>
> It runs for about 30 - 60 secs and then freezes. The led on the 
> motherboard
> is still blinking though.
> We've tried to plug into other USB ports and using different cables but 
> the
> result is always the same.
>
> F12 is used with all the latest updates.
>
> Screenshots when it halts @
> http://www.poes-weather.com/~patrik/usrp/usb-fail/
> Notice the serialnumber is all zeros, perhaps cos it is a preversion?
>
> Suggestions what to try next appreciated,

Occasionally, I also see "write_cmd failed" on my USRP and I suspect
it is due to bad electrical connection. I know for sure my USRP has
been exposed to enough physical stress to have a bad USB connector.

Alex