JRC JMA-7122-6XA, Installation Manual, Page: 79 / 316

JMA-9100/7100 Installation Manual > 2.INSTALLATION OF SCANNER UNIT > 2.4 PRECAUTIONS
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2.4.4 Confirmation during test run
If the scanner vibrates a lot during test run, try to reduce or prevent vibration by
reinforcing the scanner mount base or using wire stays attached to the radar mast.
2.4.5 Others
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The design of the mounting platform for the scanner should take into account the
vibration requirements of resolution A.694(17) and furthermore defined by IEC 60945.
•
All installations should facilitate protection of equipment, including cabling, from
damage.
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The cables should be kept as short as possible to minimize attenuation of the signal.
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Crossing of cables should be done at right angles(90 ° ) to minimize magnetic field
coupling.
•
Eliminating the interference on frequencies used for marine communications and
navigation due to operation of the radar. All cables of the radar are to be run away from
the cables of radio equipment. (ex. Radiotelephone. Communications receiver and
direction finder, etc.) Especially inter-wiring cables between scanner unit and display
unit of the radar should not be run parallel with the cables of radio equipment.
•
Cable, coaxial cable and flexible waveguide should not be exposed sharp bends. See
also section 2.4.2 (4)
“
Permissible bending radius
”
.
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The grounding of equipment units should be carried out according to INSTALLATION
OF SCANNER UNIT and INSTALLATION OF TRANSMITTER RECEIVER UNIT.
Vibration 2 to 13.2Hz
Amplitude +/-1mm +/-10%
13.2 to 100Hz Acceleration 7m/s
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