Is the content of this site obsolete?
·
The last major update of this site has been done for
the PPP SW 4.02.037. There is a
later PPP SW 4.03.041 available here. There is one major difference between both updates that
affects some parts of this document. I have summarized this in MSG
2916 of the Yahoo
S625X forum.
·
You can try to ask POLAR to report which bugs were
fixed in their last software update. It
is not their policy to answer such a question.
·
The S625X contains a MASK processor, which can’t be
updated. This means that the firmware bugs or anomalies of the S625X itself, still
hold.
·
Cycling: some people also posted their experience with
cycling facilities (MSG 2712, MSG 2837, …). I have
posted some interersting controlled test protocols for the evaluation of the basic
cycling behavior of the S625X (MSG 2697, MSG 2705, …). The only thing that is confirmed today is that
it is not advised to use another MEM SET than 5 sec.
Table of contents
2 What to remember if you do not want to read the entire document
3 What’s in this report for you?
5 Speed and distances in the S625X and PPP SW: the principles
5.1 Displayed and measured speed sensor
values
5.2 Recorded
speed sensor values
5.3 Displayed
and recorded distance values
5.4 Transferred distances to the PPP SW
6 Speed and distances in the S625X and PPP SW: the real
behavior
6.1 The real speed and distance
transfer from S625X to the HRM file
6.2 The real speed and distance
management in the PPP SW
6.2.1 Ambiguity between LAPdistances and SATdistances
6.2.2 SATdistances (SAmple Time distances) in the PPP SW
6.2.3 LAPdistances in the PPP SW
6.2.3.1 Originally measured and recorded LAPdata
6.2.3.2 Other LAPdata manipulation
6.2.4 Total distance ambiguity in the PPP SW
6.3 The real speed and distance
management in the S625X
6.3.1.1 Underestimation of the real distance due to speed
cracks
6.3.1.2 Underestimation of the real distance due to
stopping the StopWatch
6.3.2 Firmware bug:
LAPdistance recording
6.3.3 Firmware bug: Instant distance bug
7 Paces in limits and their limitations
7.1 Programming the S625X Exercise Set
(virtual trainer)
7.1.1 Virtual trainer “BasicSet”
7.1.2 Virtual trainer “IntervalSet”
8.1 Influence of the MEMory SETting
8.1.1 Influence of the MEM SET on the
recorded speed curve
8.1.2 Influence of speed cracks on the LAPdistance recording
8.1.3 Recall: influence of the displayed body speed at the LAPtime
on the LAPdistance recording
8.2 Influence of the running speed
profile on the accuracy
8.3 Distance based Interval guidance
8.3.1 Firmware bug: INT DIST and RECOV DIST
8.3.2 Illogical
behaviors of the distance based interval trainer
8.3.3 An example
of a distance based interval workout with pace limits
9 After workout speed and distance data analysis.
10 Most important conclusions on the practical use of the S625X
10.3 My personal recommendations to POLAR
11.1 What is the accuracy if you don’t
calibrate?
11.2 What is the best calibration method?
11.2.1 First difference: stand-still versus
flying calibration.
11.2.2 Second difference: blind calibration
versus transparent calibration
11.2.3 Third difference: number of
significant digits taken into the calibration
11.2.4 Fourth
Difference: preferred calibration track
11.3 Accurate calibration procedures
11.3.1 Accurate Calibration Factor Procedure
11.3.1.2 Calculation of the Calibration Factor:
11.3.2 Accurate Calibration Chart Procedure
11.3.2.2 Calculation of the Calibration Chart:
11.4 Additional remarks on accurate
calibration
12 A Swiss Army Knife for the S625X recorded speeds and
distances