Nandblasting not working in one xo
roshan at olenepal.org
Fri Jul 6 00:24:45 EDT 2012
Sorry for the late reply, I was out on fields.
In the mean time I opened up the XO but couldn't find any thing wrong with
it. I've uploaded the pictures here,
https://docs.google.com/folder/d/0BwLO_x-v4VE4eXpuOTFyVlZsQ3M/edit . Can
you please kindly check once and see if you can spot any fault or some
other part that I missed to look. However I also compared by opening
another working xo but didn't find any differences.
On Tue, Jul 3, 2012 at 11:25 AM, James Cameron <quozl at laptop.org> wrote:
> On Tue, Jul 03, 2012 at 11:04:07AM +0545, Roshan Karki wrote:
> > I'm sorry I never noticed the period. Actually I was typing one
> > command per line and thought . was for period. With dot I'm getting
> > 0 as result.
> Sorry about that. The Forth word . pops an item from the stack and
> prints it as a number in the current radix.
> Okay, this means that during 300ms of listening on the specified
> channel, the wireless device was unable to receive any of the
> multicast packets from the sender.
> The transmit power used by the NANDblaster sender is likely to be much
> lower than the transmit power used by your access point. The result
> of the RF link budget  may not allow successful receive.
> > You are right. There is around -20 difference between working and
> > this xo.
> Try placing this XO with the antennas 25cm from the sender, with the
> antennas of both XO set vertical.
> I'm now convinced you have an antenna cable problem that needs
> maintenance. There is likely to be about 20 dB extra loss in the
> cables, compared to the working XO.
> As an optimisation, you can also use test-antenna to find which XO has
> the best RSSI, and use that XO as the NANDblaster sender. A high RSSI
> also means the XO will transmit better, in most cases.
> 1. http://en.wikipedia.org/wiki/Link_budget
> James Cameron
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