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CONTINUOUS SELF CALIBRATION:
The self calibration is done in two phases: the
first phase is FastCAL™ and the second phase is
SmartCAL™. FastCAL™, as the name implies is
an initial fast calibration routine. When the com-
pass is first powered up and there are no calibra-
tion settings saved in its memory or after you
have completed the procedure to erase the current
calibration settings, the letters "CAL" will be
flashing on the display. The compass is now in
FastCAL™ mode. After you complete your first
90 degree turn the "CAL" letters will turn off and
the compass will be accurate to within 1 cardinal
point. The compass will remain in FastCAL™
mode until, under normal driving conditions; you
have completed two or three circles. By this time
the compass sensor will have taken multiple
reads in every direction and will have gathered
enough information about its environment to be
fully calibrated. If the battery power is removed
from the compass before it has completed the
FastCAL™ routine, it will start FastCAL™ over
the next time it is powered up. Turning ignition
power on and off will not affect the FastCAL™
routine. After the FastCAL™ routine is complet-
ed the compass switches into the SmartCAL™
mode. SmartCAL™ is an ongoing, fine tuning of
the calibration settings. In the SmartCAL™
mode, whenever the compass is operating in nor-
mal ignition on mode, it will continually take
readings from the compass sensor and compare
those readings to what it has saved in its calibra-
tion settings. The compass will use the new infor-
mation it gathers to fine tune its calibration
settings so it will be as accurate as possible, even
when you travel in and out of areas where the
earths magnetic fields get stronger or weaker.
Calibration:
NOTE: The calibration procedure requires you
to drive your coach in a circle during
calibration mode, so you will need to be
in a large area clear of obstacles, such as
a vacant section of a parking lot.
The compass must be calibrated after its ini-
tial installation and anytime the compass sensor
is replaced or relocated. The calibration values
are saved in EPROM memory, so it is not neces-
sary to recalibrate if the battery is disconnected.
DRIVING YOUR MOTOR HOME
Calibration Procedure:
(Best performed in empty parking lot)
1. With the engine running, press and hold the
MODE button until the words 'ZONE' and
'CAL' appear (approximately ten (10) sec-
onds). The unit will display the current zone
value.
2. Press the °F/°C button to increment the zone
value.
3. Press the MODE button to store the zone
value.
4. The unit now displays the word 'CAL'. Press
the °F/°C button to enter the calibration
mode. The display will begin counting down
from 60 seconds and the work 'CAL' will
flash. Drive slowly in a circle during the 60
second calibration period. If the calibration
procedure fails, the unit will flash the word
'CAL' continuously. If the calibration proce-
dure is successful, the unit will display the
work 'CAL' for five (5) seconds and then
return to normal ignition 'on' operation.
ZONE ADJUSTMENT
When you travel outside the zone, the unit is
currently set 'on', the compass has reduced accu-
racy. To achieve maximum accuracy, it is recom-
mended to change the zone setting when
traveling to a new zone in the U.S. To change the
zone setting, follow steps (1.) through (3.) of the
CALIBRATION ROUTINE, at which point the
unit will display the word 'CAL'. Press the
MODE button again to skip calibrating. It is not
necessary to recalibrate the compass when you
change zones.
Compass zones for the U.S.
SECTION 2
2-15
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