Navico 10kW Installation Manual - page 65
Troubleshoot the radar | 63
9.3 Radar is not operating correctly
If no image appears on the screen and screen shows message no scanner detected:
• check radar scanner interconnect cable wiring.
If no image appears on the screen and the screen shows message no radar detected:
• check the data cable between the radar and the display head system
• check that the radar processor has power
If the scanner is working but no image appears on the display:
• adjust gain and threshold
If the display shows only noise:
• check that the scanner and open array (if applicable) are fitted correctly
If radar reception is poor:
• check for physical damage to the cables (such as fraying) and for any loose connections
• check for water damage to the radiator or to the cables between the radar components
• check for interruptions in the pulse switching signal
If an image appears on the display but the direction of the radar image is not stable:
• the direction standard signal (BZ) is being interrupted (see the Service Manual)
• check for water damage to the radiator or cables between the radar components.
9.4 How to reduce noise and interference
If other electronic equipment on the vessel is being affected by noise interference from the
radar, check that the radar is actually the source of the problem by switching it off, running the
other electronic equipment for a while to see if the noise interference has disappeared, and then
switching the radar on again.
If the radar is causing the noise interference, check that:
• the affected piece of equipment and/or the antenna is not located within the radar beam.
(
For information about the optimum installation height and the radar beam width
(see "Install the
radar" page 9),).
• the cables supplied with the equipment have been installed correctly. In particular, check
for loose connections and loose or missing shield meshwork at the cable ends.
• the covers of the scanner and radar processor box are securely screwed and/or fastened
in place, so that the internal shielding is effective.
• each piece of radio equipment is grounded to the closest ground location, and that other
devices are grounded to the closest ground location on the hull.
• the radar cabling has not been bundled with the VHF radio cabling and/or with the
direction finder cabling. The radar cabling must always be separate.
9.5 Make sure the power is present and correctly wired
Check the in-line fuse.
Re-verify that the correct system voltage is being used for the radar processor box model and
that the power is properly wired. If the radar processor has incorrect power, the system may
not initialize properly or the radar processor may be damaged.