GPS speed is displayed automatically unless an impeller is detected. By default it is averaged over
three strokes and can be displayed as a 500m split or in m/sec.
Adjusting Number
of Strokes GPS
Averages Over (1-8)
Press and hold the ‘DISPLAY’ and ‘CLOCK’ buttons for
3 seconds.
The display will alternate between ‘STr-AVG’, ‘SPd-SPL’,
‘I-CAL’ and ICF-SEt
at 2 second intervals, ‘ select ‘STr-AVG’
by releasing the buttons. Use the INCREASE VOLUME
and DECREASE VOLUME buttons to alter the number of
strokes GPS speed is averaged over.
Note that trees, bridges and buildings can sometimes
affect the accuracy of GPS readings.
GPS
Top Tip:
Although GPS is reasonably accurate we recommend the use of an
impeller when training as it is more accurate and is not affected by any stream.
This is done automatically using the GPS distance sensor. You will need to do it on a clear, and reasonably
straight, 500 metre stretch of water. You are likely to get a more accurate calibration if you do it on still
water but if the water is moving you should use ‘Stream Compensation’ before starting the calibration.
Calibrating the
Impeller
Adjusting the
Calibration
Press and hold the ‘DISPLAY’ and ‘CLOCK’ buttons for
5 seconds.
The display will alternate between ‘STr-AVG’, ‘SPd-SPL’,
‘I-CAL’ and ICF-SEt at 2 second intervals, select ‘I-CAL’
by releasing the buttons. The unit will enter Calibration
Mode and ‘500’ will be displayed. You then need to row
at a reasonable pace, and use the rudder as little as
possible, for 500 metres. The distance will count down
as you do this and when it reaches zero ‘READY’ will be
displayed and your Impeller is calibrated.
Calibrating the Impeller
Press and hold the ‘DISPLAY’ and ‘CLOCK’ buttons for
3 seconds.
The display will alternate between ‘STr-AVG’, ‘SPd-SPL’,
‘I-CAL’ and ICF-SEt at 2 second intervals, select ‘ICF-SEt’
by releasing the buttons. The unit will enter Impeller
Calibration Factor mode where you can then adjust
the Calibration Factor number using the INCREASE
VOLUME and DECREASE VOLUME buttons. You would
do this if you were using your CoxOrb in a boat that
has an Impeller with a known Calibration Factor or if
you were setting the Calibration Factor of an Impeller
using markers on a rowing course rather than using the
automatic GPS calibration method. To do this you would
see what distance the CoxOrb displayed when the boat
travelled between 500 metre markers and then adjust
the Calibration factor up or down by the percentage the
displayed distance was out (adjust factor down if the
distance displayed is less than 500 metres and up if greater).
