Matsutec HP-528A User Manual page 11

Lost alarm
If the lost alarm is set on, lost alarm message will pop up when the watch
target is declared as a lost one.
Position alarm
If the position alarm is set on, deviation alarm message will pop up when
the watch target deviates away from the defined position far than the
defined range.
2.2.3.2 Watch Target Menu
Use ▲ or ▼ key to select a watch target, then press ENT key to get a
pop-up menu for further operation.
Detail
Get detailed information of the watch target.
Edit Watch
Edit the watch items, such as MMSI, or switch on/off watch alarms, or
modify the position, or position range.
Delete Watch
Delete the watch target from the list.
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