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Hacking the Polar S710/720? User groups?(8 posts)

Hacking the Polar S710/720? User groups?sodade
Apr 8, 2003 10:59 AM
Has anyone seen a user group site or any info on hacking the datafiles that the the polar s710/720 creates? For the most part, the files are pretty easy to decipher, but I have been having a hell of a time trying top figure out how to trim files where I forgot to turn the monitor off so that the erroneous time doesn't show up in my "training time" chart. I am thinking about buiding an Excel application that will automagically import the data files and show me the information in the ways that I want it. I'd love to hear from others who have similar ideas.

Also - has anyone figured out how to reset the trip distance? It seems so silly that it doesn't automatically reset this when you stop the current exercise.

Is anyone using the advanced features (specific interval workuts, fitness tests, etc...)?
Resetting trip distanceTrekFurthur
Apr 8, 2003 12:06 PM
When you start your next ride, turn on the HRM (push the red button ONCE). Then hit the lower right button, until the screen with your distance appears at top. Hold the top left button down until the distance blinks and the clears--release button. You can do the same procedure to recalibrate your altimeter
Resetting TotalsMatt Britter
Apr 10, 2003 2:40 PM
Has anyone figured out how to reset the milage total(not the trip) and Kcal totals?
Resetting TotalsTrekFurthur
Apr 11, 2003 8:57 AM
Not that this is much help, but it's in the manual.

Possibly, go to File, then Records; at each entry, try holding down the top left button as you would to clear anything else.

Hope that helps.
re: Hacking the Polar S710/720? User groups?techie470
Apr 9, 2003 12:49 PM
It looks like the polar uses the file name format of yymmddxx.hrm (where xx is exercise number of the day) for the heart rate file.

Using Excel to open this file, the recorded info seems to start about row 77. Column A is heart rate, column B looks like wheel rpm, column C is cadence, and column D is altitude.
At least that's my guess.

I couldn't make any sense of the .pdd file format.

I tried to edit the .hrm files using the above info, by deleting any row that had a 0 for wheel rpm. Unfortunately the Polar Precision software would not show a graph for that day.

Hope this helps; I'd love to be able to trim some of my exercise files also.

I can trim them, but they still show up wrong on the weekly sumsodade
Apr 10, 2003 8:24 AM
I can delete rows and still open the exercise - you problem is probably just that your text editor is appending a .txt (or something) to the end of the .hrm file.

It seems that the .pdd file contains the summary info that it uses for the weekly charts. I will start fiddling with the numbers to see if I get any results.

I sent an email to polar, but still no response. I am surprised that there isn't a user group dedicated to hacking these puppies.
I can trim them, but they still show up wrong on the weekly sumtechie470
Apr 10, 2003 11:49 AM
Did you adjust the Length entry on line 7 of the HRM file?

yup - it uses some number from the .pdd -nm-sodade
Apr 11, 2003 7:16 AM