Sperry Marine 4914-CA, Руководство по эксплуатации, установке и обслуживанию

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Risk of erroneous heading accuracy caused by vibration / resonance
frequencies
The NAVIGAT X MK 1 gyrocompass is a highly sensitive instrument.
Resonance frequencies or vibrations caused by incorrect install position
or install and environmental conditions will badly influence the heading
accuracy.
Always keep to the recommended install and environmental conditions.
Never install the gyrocompass in or close the engine room or any posi-
tion where reasonable vibration / resonance frequencies levels are
exceeded. Always make sure to minimise possible resonance frequen-
cies or vibration causes at install place when installing the gyrocompass.
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Risk of erroneous heading accuracy caused by electromagnetic
interference (EMC)
The NAVIGAT X MK 1 gyrocompass is a highly sensitive instrument.
Electromagnetic interference of other devices or their power lines will
badly influence the heading accuracy.
Always keep to the recommended minimal clearance requirements at
install position of the gyrocompass.
Never install other electronic equipment or high voltage power lines
close to or across the compass housing.
Always make sure to minimise possible electromagnetic interference of
other devices when installing the NAVIGAT X MK 1 gyrocompass.
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Risk of inadequate testing / test values
The usage of any voltmeter NOT true RMS for testing will falsify the test
results.
The usage of a multimeter true RMS is absolutely mandatory.
Newer use a voltmeter not true RMS for testing purposes.
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Risk of damage/destruction after power-down
After power-down of the gyrocompass system, it may take up to
45 minutes for the gyroscopes to stop rotating and the gyrosphere is
therefore extremely sensible against any movement. Should the gyro-
sphere touch the wall of the container, the momentum of the rotating
gyroscopes will make it topple and damage the centre pin.
Avoid any movement of the gyrocompass system during power-down
time. Always be extremely careful in case the gyrosphere container must
be handled during power-down time.
`^rqflk Risk of damage of electrostatic-discharge-sensitive components
The NAVIGAT X MK 1 contains electrostatic sensitive components.
Electrostatic discharge may permanently damage components.
When servicing the NAVIGAT X MK 1, take considerable precautions to
prevent electrostatic discharge. Avoid touching any of the electronic cir-
cuitry.
`^rqflk Risk of loss of parameter settings through software exchange
It cannot be guaranteed that parameter settings in the User and Setup
menus and the entries made in the Magnetic Compass Calibration table
are left intact when the software is exchanged.
Before exchanging the system software IC, record all parameter settings
to be able to re-enter them manually, if required.