John,
I think I do see how you counted it.
I would think Garmin would be most appreciative of your input.
Chet

wrote in message
ups.com...
Chet,

The explanation in my previous post is wrong. The counter would not
be reset to zero at 513... it would have to go to 1024 to reset to
zero so perhaps they are using a 9 bit counter which overflows at 512
and resets to zero. As I said, I don't have the source code so the
only thing I can do is guess.