On 3/20/2012 5:33 PM, Chris wrote:
Somebody else (not on here) who
uses Argo has just told me his system locks up like mine in
NDB mode. I thought the problem might be made worse by lack of
memory here (the computer's, not mine, although come to think
of it....), but he has 3gig so that appears to be nothing to
do with it, just processor.
Hi Chris,
thanks for the report. Argo uses a lot of memory only in the very
slow modes (QRSS600 and QRSS1200),
at least until I will have completed the changes I intend to do.
But not in the NDB mode....
The NDB mode taxes the CPU as far as speed is concerned... even in
Slow speed, to have a decent flow
of the waterfall to allow seeing the CW dots and dashes, a new FFT
is computed every 40 ms. That means
25 FFTs of 2048 samples (for the NDB mode) each second, with the
annex magnitude and color mapping
computations.
The PC must be fast enough for this.... as said, I have no problems
with a slow Atom mainboard, but I can well
understand that PCs slower than this can balk... the apparent lock
up is probably caused by the fact that there
are no more CPU cycles left to execute user commands.
Of course, if you and/or your friend are using a modern, fast PC,
then what written above is no more valid,
and the cause of the lock ups must be elsewhere...
73 Alberto I2PHD
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