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Users will need to calibrate the compass.
Step 1
: Select appropriate location and install OceanServer Compass in device
IMPORTANT NOTE:
Compasses require users to hit the < Esc > key prior to
each programming/calibration step. This has been added to prevent accidental
programming.
Step 2
Open a Hyperterm window to take two separate measurements (X-Y together,
followed by Z) for calibration. The Virtual terminal settings for the compass serial port:
19200 baud, 1 stop, no parity. We recommend TeraTERM free software. A Nema
string of data will begin outputting when connected properly (ie…“$C328.3P28.4R-
12.4T21.1D21.01)
Step 3 (Calibrating X, Y):
a.
Check that the platform is level,
observe Pitch (P0.x) and Roll (R0.x) data
and confirm they are less than 1 degree. Next, fully rotate the platform to make
sure it will remain level during the calibration process. The area should be
clear of soft and hard iron objects that could disrupt the earths magnetic field,
cars, motors, wires with current, magnets, etc.
b. Calibrating X, Y:
Enter <Esc> key, next enter uppercase “C” key and slowly
rotate the device at least one complete rotation for at least 20 plus seconds.
Note: the device should be kept as level as possible to calibrate the X, Y
magnetic sensing elements. Terminate sequence with SPACE bar key after you
have slowly rotated the device and observed the following output “…..” this
indicates you have found the “X,Y” max and “X,Y” min values.
Ground
Rotate 360 Degrees
Parallel to the Earth
X, Y Calibration
Compass looking into
Back connector
