PowerTap Pro - Manual (Page 36)

36
TROUBLE SHOOTING
The second issue is time differences. The data points used for display on the CPU may not coincide perfectly with what is stored to memory. There can be up to a 1-sample (or 1-second) loss at
the start and stop of a download file. If the CPU is in 2-second mode this max time error (2-seconds at the start and/or stop) can be as much as 4-seconds off.
The individual raw data records written to memory are extremely accurate. In fact the data has been proven in laboratory testing to be accurate to +/- 1.5%. This means the data downloaded to
the Link accurately represents what was happening on your bike second by second. How we repackage the data, to make it useable does not affect or detract from its accuracy - it's just making
it more user friendly.
Some of the values on the ride chart don't make any sense - I don't remember going 170 miles per hour!
The scale on both the right side and the left side of the graph consolidates several measured values and therefore must share the common vertical axis. So, to avoid 'tall' power curves and
extremely 'short' speed curves, the speed is shown as a multiple of 10.
Sometimes interference can cause inflated values, you can change these values in the .CSV file by replacing the out of place number with a more realistic number such as that which precedes
and follows the invalid number.
Tips on Installation
· Do not have any other applications running while doing the installation.
· If there are lots of items in the system tray turn some off or disable for the installation process.
· If there is a long pause during the installation, do not do anything. The program may be busy and a shutdown could cause a disruption.
· There is benefit to uninstalling from the CD. If the program has been installed or partially installed and the CD is put in and allowed to autorun, it will detect the current installation and offer the
choice to uninstall. This uninstall does a much better job of uninstalling than manually uninstalling or using the native windows uninstall system. The Link software will often run correctly after it
has been un-installed with the CD and then re-installed.