(Andy Durbin) wrote in message . com...
I had a problem downloading a log from my 302 last Sunday (June 13).
Several attempts to download with utility 3UT15255 gave a transfer or
communication error (don't remember which). Still didn't work after
reset the PDA and power cycing the 302. I verified that MC exchange
was working with the PDA so that ruled out a cable or serial port
failure. First attempt with a different version of the utility
(3UT15XXX) worked fine.

I'll try to reproduce the problem this evening, but interested to hear
if anyone else had a problem downloading a Sunday 13 flight.


Andy

Andy

I have had troubles with the 302 once before using the PC download
program. After bombing out halfway during a download, the unit simply
would not download again at all (despite power cycling, etc).
Eventually, I gave up that day (it was getting dark) and when I came
back a few days later it just worked again.

I have since upgraded the firmware, and have never seen that problem
again.

The download process switches from a slow baud rate (4800 IIRC) that
is used for the basic command mode to 115,200 baud for the actual
transfer of the log itself. If noise is a problem, or your PDA's COM
port is a bit suspect at 115,200 baud (as I've seen before with some
notebook PCs), then it might bomb out part way through.

I have also heard that Cambridge have had some PCB problems with the
302 innards. I am not sure whether it's related to the manufacturing
process, or a bad batch of components. You might like to contact
Cambridge's service department.

PS: If anyone has written an alternative download program, I would be
interested to hear from them. The Cambridge-supplied ones do not show
local times (all log time-stamps are UTC) and you cannot select
multiple traces to download, which makes it positively painful if you
want to download, for instance, all logs from a club camp. You have
to select one at a time, download it, then select the next, and the
next, and the next .... AARGH !!!


Cheers

Jason