Cutoff for cadence and power explained

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Cutoff for cadence and power explained

Postby CHnuschti » Tue May 19, 2009 9:38 am

Question:

How do I use cadence and power cutoff, what effects does it have?

Answer:

Choose/enter settings for cadence and power cutoff at Settings=>Display=>Analysis=>Cycling Settings with mouse left click (Settings FAQ point 5)).
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If the boxes are set to 0=zero, the settings will have NO effect. If you try to leave the box empty, they will be set automatically to 1.

These cutoffs are used to exclude the time periods during which you are not pedaling, but still are moving (downhill etc.), in order to obtain cadence and power averages for "real" activity alone. All time/distance segments during which your cadence/power falls BELOW the cutoff set will be excluded for the average calculation.

To achieve this for cadence, setting the cutoff to 1 usually is enough, since cadence measurement in general is simple and reliable. For power, there may be need for a higher value, if the measurement and/or record of the device used shows some delay until if falls back to "zero".

A cutoff works in analogous way as the "paused" time for speed (see pauses FAQ), so it can be interpreted as pause.
Last edited by CHnuschti on Fri Sep 18, 2009 11:09 am, edited 7 times in total.
CHnuschti
 
Posts: 267
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Postby CHnuschti » Tue May 19, 2009 9:41 am

Question:

Any unit/brand specific notes?

Answer:

Garmin:
The Garmin Edge 305 firmware v3.20 introduced a cadence cutoff for the average calculation WITHIN the device. This setting of the device is always effective and can not be switched off. However, the record is still performed correctly, cadence in such segments will be recorded correctly as 0 and therefore is "present" when importing to SportTracks. So you still have to apply a cutoff within SportTracks in order to obtain a corresponding average.
CHnuschti
 
Posts: 267
Joined: Tue Feb 13, 2007 3:28 am
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