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Re: Powertap elasped time on download different than display [Murphy'sLaw]
emailed a pal @ saris today:

Thought about calling in and seeing what CS would say, but then I figured I’d cut it all out and go straight to the best contact I have for PT questions.

Have had an odd situation with my CPU+ LYC over the last couple weeks when I download certain workouts. I’ve had it occur 3 to 4 times, but know the specific details for only two of them.

What is basically happening is that when I download the ride – WKO+ and/or poweragent show the elapsed time as being longer than the displayed time (which matches the actual time for a ride).

For example – yesterday I did pigman. Rode 2:25 and change. Race split says 2:25, Display says 2:25. When I download, I get 2:29 – just slightly over 4 minutes longer. When I examine the downloaded file in a chart – it’s not 2:25 + empty data – it’s as if time is compressed and there are no gaps in the data. I suspect that it has to do with the CPU going to sleep – as I did a long ride recently that was 5:59 in reality, and the download was 6:07 – with two stops long enough to let the CPU sleep.

Here’s the use case for Pigman yesterday.

1> Rack bike in transition.
2> Wake hub/CPU up make sure they are talking.
3> Clear Computer by pressing Mode/Select together.
4> Manual Zero
5> Do other stuff/head to swim start – CPU goes to sleep.
6> Swim
7> Grab bike from rack – run to T1 exit
8> Mount, wake CPU up and ride.
9> Download and notice that downloaded elapsed time is 4 minutes longer than displayed time.

I’ve attached the PA export and the WKO+ file for reference.

The use case for the 6 hour ride is similar. Ride – stop and refill bottles. Ride more; refill bottles. Finish – display 5:59 – download 6:08.

Also – I just looked; I have a longer ride recently that had the CPU go to sleep because of stopping to meet folks and refuel, and the issue does not appear there – however that was using a 2.4 LYC that I was borrowing.
Last edited by: sentania: Aug 23, 10 7:02

Edit Log:

  • Post edited by sentania (Dawson Saddle) on Aug 23, 10 7:02