Mayday, Mayday, flex2400 is down

Help!

Today, I connect two flex2400 directly through a coaxial wire. Maybe the
gain is too high, the receiving one don’t work any more.
One I plug the broken one on the mother board, the python graph seems
not
running and no data is transferred from usrp to PC. I see nothing on the
fft
window of usrp_fft.py.
I wonder which part of the daughter borad is broken and if it could be
repaired.
I hope Ettus R. can provide me some repair service and it’s free
cause
the board is just bought about 5 months ago :wink:

hanwen

On Tuesday 26 September 2006 08:36, hanwen wrote:

Today, I connect two flex2400 directly through a coaxial wire. Maybe the
gain is too high, the receiving one don’t work any more.

Yep, you probably overloaded the input.

One I plug the broken one on the mother board, the python graph seems not
running and no data is transferred from usrp to PC. I see nothing on the
fft window of usrp_fft.py.
I wonder which part of the daughter borad is broken and if it could be
repaired.

It should be repairable.

I hope Ettus R. can provide me some repair service and it’s free
cause the board is just bought about 5 months ago :wink:

About a year ago I sent back a USRP motherboard for repair; it was not
free,
but it was far less than a new board.

Frankly, if it was your own error, I wouldn’t expect the repair to be
free.
Not trying to be too hard or anything, just relating the reality of
Ettus
Research being a small, niche, manufacturer and unable to underwrite
free
repairs (because the repair is not going to be free for Ettus).

Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu

hanwen wrote:

cause the board is just bought about 5 months ago :wink:

Hanwen,

I don’t understand why you think this should be a free repair.
Everything you purchased from me worked at the time you received it, and
has continued to work for 5 months. The only reason it no longer works
is that you did something which:

1) I have repeatedly stated should not be done.

2) Would have destroyed just about any receiver you are likely to 

find.

Just to be clear for everyone out there – if the products you buy from
me don’t work WHEN THEY ARRIVE, I will replace them. If you break them,
I am not responsible. This includes, but is not limited to:

Lightning strikes to your equipment
You dropping metal objects onto powered circuit boards
Spilling your coffee on them
Transmitting directly into the receive port
Not taking adequate static safety precautions
Using power supplies other than the ones I provide

Please also note that it is EXTREMELY rare for items to arrive broken,
since everything is tested immediately before shipment.

Matt

Matt,

Just want to get clarification on one point:

I am not responsible. This includes, but is not limited to:

Transmitting directly into the receive port

Does this apply to the BasicTX and BasicRX boards as well. I called the
day we ordered this board asking about what kind of antennae was
available for these daughterboards and was told that they were
essentially baseband I/O boards. I then specifically asked if the output
of the BasicTX board could be piped directly into the BasicRX board and
was told yes. Is this the case for these particular daughterboards?

Help!

Today, I connect two flex2400 directly through a coaxial wire. Maybe
the gain is too high, the receiving one don’t work any more.
One I plug the broken one on the mother board, the python graph
seems

not running and no data is transferred from usrp to PC. I see
nothing

on the fft window of usrp_fft.py.
I wonder which part of the daughter borad is broken and if it could
be

repaired.
I hope Ettus R. can provide me some repair service and it’s
free

cause the board is just bought about 5 months ago :wink:

Hanwen,

I don’t understand why you think this should be a free repair.
Everything you purchased from me worked at the time you received it,
and
has continued to work for 5 months. The only reason it no longer
works
is that you did something which:

1) I have repeatedly stated should not be done.

2) Would have destroyed just about any receiver you are likely to

find.

Just to be clear for everyone out there – if the products you buy
from
me don’t work WHEN THEY ARRIVE, I will replace them. If you break
them,

Sorry, Matt. I didn’t mean to be such rude.
After I messed up the precious board, my fellows has just joking me with
the
free reapir service of some other device providers. And I write the mail
without thinking. OK, relax, man;)

Would it be convinent for you that I mail the broken board to you fo
repairing?
Or if the condition of the board is not too bad, you may tell me which
part
is broken and maybe I can manage to repair it myself.

Thanks for reminding. Thank to the help of other guys in this thread. I
hope
we won’t damage our USRP by incaution any more.

hanwen

Bahn William L Civ USAFA/DFCS wrote:

was told yes. Is this the case for these particular daughterboards?

The BasicTX does not have an amplifier, so this wouldn’t be a problem.

Matt

Matt,

You do an excellent job with the production and support. I think he was
kidding about free repair service. That’s what the wink meant. I think
:slight_smile:

–Alex

I think it’s better for you to modify it by yourself. Maybe just
replace some components if they are not difficult to find in the
electronic market. And it’s a chance to learn more about this board.

Alin

2006/9/27, hanwen [email protected]:

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