15
ALARM
–
R- >
xxx
nT
If the absolute difference to the reference measurement value (long
press (OK)) exceeds
xxx
the alarm will be triggered.
ALARM A-B >
xxx
nT
If the absolute difference between the last and the actual measurement
value exceeds
xxx
the alarm will be triggered.
Note: If the sound setting is OFF no alarms will be played.
5.7 AUTOTUNE (Automatic Tuning)
By pressing (OK) the automatic search for the optimal tuning setting will be started. It is essential
that the sensor resides in an undisturbed environment during the complete process. Also, the
maximum precession signal should be present. This is usually achieved when the sensor is aligned
such that the earth's magnetic field lines cross the sensor axis in a perpendicular way (see chapter
2.1). Note that the auto-tuning feature takes about 2 minutes.
After the optimal tuning value has been determined, it appears on the display, but is not
automatically used. The user can decide if it shall be taken (press (OK) key) or discarded (press
(+) or (
–) key).
5.8 GPS Info Display
This display shows information gained from the GPS receiver.
It includes the GPS deviation of position in meters (upper right corner), as well as the UTC time and
date in the lower row. If no GPS receiver is connected, then the disconnected-symbol will be shown:
The GPS receiver can be connected to the magnetometer even after startup. It will then be
automatically detected.
5.9 Software Version and Operating Voltage
The software version (lower left corner) and the actual operating voltage (upper right corner) will be
displayed:
The operating voltage will be dynamically updated.
AUTOTUNE...
AM502 12.7V
V0301-0039
GPS-OK 1.2
123055 080818
GPS
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