If Automatic Calibration is ON (See Page 8) each time an adjustment to the dis-
tance is performed (other than Zeroing the distance) the instrument will do an
automatic adjustment to the wheel circumference it uses to measure the dis-
tance travelled.
NOTE:
This
calculation
has
many
safeguards
which
prevent
the
instrument
from
making
an
unusual
adjustment.
It
has
been
proven
in
over 20
years
of
use.
If you get lost, then return to the course and make an adjustment, the instru-
ment WILL NOT calculate a new wheel circumference. It will ignore the adjust-
ment and use the same wheel circumference as before the adjustment.
At the start of each day's ride the instrument does not use the Automatic Cali-
bration wheel circumference from the previous ride. It will use the wheel circum-
ference set in Edit (See page 5) until a manual distance adjustment is per-
formed along the course. It then begins adjusting to that day's course.
Automatic wheel calibration
If Automatic Calibration is OFF the rider will have direct access to the wheel cir-
cumference in Edit after each time he zeros the distance (See page 11)
Manual wheel calibration
Distance
Hold either bottom until "Cir" is displayed, then release.
Bump a bottom button to go to wheel circumference.
While the wheel circumference is displayed bump a top
button to change the circumference, or bump a bottom
to go back to the Distance display.
If the instrument distance is consistently less than
the roadbook then increase the circumference.
If it is running ahead of the roadbook then
decrease the circumference.
Avoid making any large adjustment.
EXAMPLE: After 50.0km the instrument reads
52.5km, which is roughly 5% error. Decrease the
wheel circumference by 11cm to 209cm.
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