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80 lines
3.1 KiB
Plaintext
80 lines
3.1 KiB
Plaintext
<!-- $Id: faq.content,v 1.4 2006/07/05 16:59:56 srhea Exp $ -->
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<p>
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<b><i>GoldenCheetah doesn't find my PowerTap on Ubuntu Linux.</i></b>
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<p>
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If you're using the USB cradle (as opposed to the older, serial one),
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the FTDI driver sometimes conflicts with the braille terminal in the
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default Ubuntu installation. Try unplugging the PT cradle from the
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computer and uninstalling <code>brltty</code>:
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<blockquote>
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<code>sudo apt-get remove brltty</code>
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</blockquote>
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Then plug the device back in and it should work.
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<p>
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<b><i>I downloaded a .dmg, opened it, dragged and dropped GoldenCheetah into
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Applications, double-clicked on it, and nothing happened. What
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gives?</i></b>
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<p>
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Are you running OS X Tiger? You need to be. If you are, and you're still
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having this problem, open Terminal (in Applications -> Utilities) and type
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this at the prompt:
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<blockquote><pre>
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/Applications/GoldenCheetah.app/Contents/MacOS/GoldenCheetah
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</pre></blockquote>
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then press <return> and send an email to the mailing list with
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whatever it prints out. We'll help you debug it.
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<p>
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<b><i>I've downloaded and unpacked the data. Now what do I do with
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it?</i></b>
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<p>
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We highly recommend that you buy and read both Joe Friel's <i>The
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Cyclist's Training Bible</i> and Allen and Coggan's <i>Training and
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Racing with a Power Meter</i>. The former is the definitive book about all
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aspects of cycling training (although we think he's off his rocker in the
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chapter about diet), and the latter is the definitive book about power-based
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training.
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<p>
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Also, if you buy either of these books through the links below, we'll get a
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referral fee in return, helping us to support this web site. Thanks!
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<center>
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<iframe
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src="http://rcm.amazon.com/e/cm?t=goldencheetah-20&o=1&p=8&l=as1&asins=B0006JHZ7Q&fc1=000000&IS2=1<1=_blank&lc1=0000ff&bc1=000000&bg1=ffffff&f=ifr"
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style="width:120px;height:240px;" scrolling="no" marginwidth="0"
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marginheight="0" frameborder="0"></iframe>
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<iframe
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src="http://rcm.amazon.com/e/cm?t=goldencheetah-20&o=1&p=8&l=as1&asins=1931382794&fc1=000000&IS2=1<1=_blank&lc1=0000ff&bc1=000000&bg1=ffffff&f=ifr"
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style="width:120px;height:240px;" scrolling="no" marginwidth="0"
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marginheight="0" frameborder="0"></iframe>
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</center>
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<p>
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<b><i>Does the output of <code>ptunpk</code> exactly match that of the software
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included with the PowerTap?</i></b>
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<p>
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Almost. If you run it in compatibility mode, using the <code>-c</code>
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option, it matches the PowerTap software's output exactly on everything but
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the time values, at least for the five sample rides we've tried it with.
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The times are a little off, but not by more than 0.1%, so we don't consider it
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a big deal.
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<p>
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That said, the PowerTap software does some weird things, like converting from
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kilometers to miles by multiplying by 0.62, but then reporting the miles
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values with five digits after the decimal place. If you run
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<code>ptunpk</code> without the <code>-c</code> option, it will unpack the
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data in the way we think it should. The results mostly match up with the
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official ones, and are almost certainly identical within the range of accuracy
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of the device.
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