JRC JMA-5312-6 Instruction Manual page 13

CAUTION
Use the radar only as a navigation aid.
The final navigation decision must always be made by the
operator him/herself.
Making the final navigation decision based only on the
radar display may cause accidents such as collisions or
running aground.
Use target tracking function only as a navigation aid. The
final navigation decision must always be made by the
operator him/herself.
Making the final navigation decision based only on
tracking target information may cause accidents.
Tracking target information such as vector, target
numerical data, and alarms may contain some errors.
Also, targets that are not detected by the radar cannot be
acquired or tracked.
Making the final navigation decision based only on the
radar display may cause accidents such as collisions or
running aground.
In setting an automatic acquisition zone, it is necessary to
adjust the gain, sea clutter suppression and rain clutter
suppression to ensure that target echoes are displayed in
the optimum conditions. No automatic acquisition zone
alarms will be issued for targets undetected by the radar,
and this may cause accidents such as collisions.
Target Tracking Function Test is provided to test if the
target tracking function is operating normally. Thus, do
not use the function except when you test the target
tracking function.
In particular, if the operation test mode is used during
navigation, pseudo targets appear on the radar display and
they are confused with actual targets.
Do not use the mode during navigation.
Otherwise, an accident may result.
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