Calibrating The Compass - VideoRay PRO 3 User Manual

VideoRay Pro 3 User's Manual
4) To enter the pressure sensor calibration mode, you must complete the steps to set the date and time.
You do not need to change the date and time, but must scroll through the date and time settings (with
or without changing them) in order to reach the pressure sensor calibration mode.
5) Once you have set the date and time and have entered the pressure sensor calibration mode, you have
two choices. You can either calibrate the pressure sensor, or you can bypass this procedure. You
might want to bypass this procedure if all you need to do is set the date and time or calibrate the
compass. To bypass this procedure, momentarily engage the Mode switch to "Calibrate," which will
activate the compass calibration mode, or, turn the system off to bypass this mode and the compass
calibration mode.
6) To calibrate the pressure sensor, follow the on-screen instructions and apply the first pressure to the
pressure sensor. This pressure may vary between units depending on options.
7) Momentarily engage the Auxiliary switch to "Off."
8) Apply the second pressure to the pressure sensor.
9) Momentarily engage the Auxiliary switch to "On."
10) To exit the calibration mode, simply turn the VideoRay off. Wait at least 5 seconds before turning the
VideoRay back on. Or, to continue on to calibrate the compass, momentarily engage the Mode switch
to "Calibrate," and follow the steps below.
8.7.3

CALIBRATING the COMPASS

Large metal objects such as steel buildings and ship's hulls, or other magnetic sources such as electric
motors can all affect the reading of a magnetic compass. This calibration is designed to account for
external effects on the inboard compass and should be done in an environment that best approximates the
conditions in which the VideoRay will be used. To calibrate the compass:
1) Determine NORTH, and lay out lines for North, West, South, and East on a flat surface. It is important
that VideoRay be level in order to obtain an accurate calibration.
2) Turn the VideoRay off.
3) Turn the VideoRay on while engaging the Mode switch to "Calibrate."
4) Release the Mode switch.
5) To enter the compass calibration mode, you must complete the steps to set the date and time and either
calibrate the pressure sensor or bypass the pressure sensor calibration.
6) Once you have set the date and time and have calibrated the pressure sensor (or bypassed the pressure
sensor calibration), you are ready to calibrate the compass.
7) To calibrate the compass, follow the on-screen instructions and aim the front of the VideoRay
NORTH. Momentarily engage the Auxiliary switch to "Of" to set this direction.
8) Continue the procedure by aiming the front of the VideoRay EAST and momentarily engaging the
Auxiliary switch to "On."
9) Aim SOUTH, and momentarily engage the Auxiliary switch to "Off,"
10) Finally, aim WEST and momentarily engage the Auxiliary switch to "On."
11) To exit calibration mode, momentarily engage the Mode switch to "Calibrate," or turn the VideoRay
off. Turning off the VideoRay may be done at any time during calibration without loss. Any settings
entered during calibration will be retained. Wait at least 5 seconds before turning the VideoRay back
on.
12) Rotate the vehicle to test the compass calibration.
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