Furuno 1942 Unpacking the antenna unit, Where the temperature is more than 70 C, Mounting Model

Page 39

6. INSTALLATION

This chapter provides the procedures neces- sary for installation. Installation mainly con- sists of the following:

¡siting and mounting the display unit and antenna unit

¡connection of the signal cable and the power cable

¡establishing the ground

¡checking the installation, and

¡adjustments.

6.1 Antenna Unit Installation

Siting, handling considerations

¡The antenna unit is generally installed either on top of the wheelhouse or on the radar mast on a suitable platform. Locate the antenna unit where there is a good all-round view rigging intercepting the scanning beam. Any obstruction will cause shadow and blind sectors. A mast for instance, with a diameter considerably less than the width of the radicator, will cause only a small blind sec- tor, but a horizontal spreader or crosstrees in the same horizontal plane as the antenna unit would be a much more serious obstruction; you would need to place the antenna unit well above or below it.

¡It is rarely possible to place the antenna unit where a completely clear view in all direction is available. Thus, you should determine the angular width and relative bearing of any shadow sectors for their influence on the radar at the first opportunity after fitting. (The method of determining blind and shadow sectors appears later in this chapter.)

¡If you have a radio direction finder on your boat, local its antenna clear of the antenna unit, to prevent interference to the direction finder. A separation of more than two meters is recommended.

¡To lessen the chance of picking up electri- cal interference, avoid where possible rout- ing the signal cable near other onboard electrical equipment. Also avoid running the cable in parallel with power cables.

¡The compass safe distance should be ob- served to prevent deviation of the magnetic compass.

 

 

 

 

 

 

Model

Standard compass

Steering compass

 

 

 

 

 

 

 

1832

0.9 m

0.7 m

 

 

1932

1.1 m

0.8 m

 

 

 

 

 

 

 

1942

1.0 m

0.74 m

 

 

 

 

 

 

 

 

 

 

 

¡Do not paint the radome (Model 1832) or radiator aperture (Model 1932, 1942), to ensure proper emission of the radar waves.

¡When this radar is to be installed on larger vessels, consider the following points:

(1)The signal cable run between the an- tenna and the display comes in lengths of 10 m, 15 m, 20 m and 30 m. What- ever length is used it must be unbro- ken; namely, no splicing allowed.

(2)Deposits and fumes from a funnel or other exhaust vent can adversely affect the aerial performance and hot gases may distort the radiator portion. The antenna unit must not be mounted

where the temperature is more than 70° C.

Mounting (Model 1832)

Figure 6-1 Typical antenna unit location

Unpacking the antenna unit

1.Open the antenna unit packing box care- fully.

2.Unbolt the four bolts at the base of the ra- dome to remove the radome cover.

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Contents Page 00080788713 Important Notices Radio Frequency Radiation Hazard Compliance with R&TTE Directive 1999/5/EC Foreword Table of Contents Model 1832 Specifications Vii SpecificationsViii OptionEquipment List Installation Materials Configuration of Model 1832/1932/1942 Xii Radar Display What is Radar?How Radar Determines Range How Radar Determines BearingHow radar works Control Description Basic Operation125 NM Display Indication and MarkersStand-by Economy modeTurning the Radar On/Off TransmittingSelecting the Range Adjusting Picture BrillianceAdjusting Receiver Sensitivity Adjusting the A/C SEA Control reducing sea clutterAdjusting A/C Rain Adjusting the A/C Rain Control reducing rain clutterAdjusting the A/C SEA control Tip for adjusting the A/C SEABy cursor Erasing the Heading Line, North MarkMeasuring the Range By range ringPredicting collision course Using the Offset EBLMeasuring the Bearing By EBLCancelling shifted picture Shifting off centering the PictureMeasuring range and bearing between two targets Zoom Cancelling zoomSelecting the Presentation Mode Basic Menu OperationPress the Menu key to close the menu Magnifying Long Range Echoes echo stretch Echo TrailSelect OFF deactivate at Echo Trail on the menu Suppressing Radar InterferenceGuard Alarm Selecting PulsewidthMentally create the guard zone you want to set Guard WatchmanGo into the Others menu, and set 15. Watchman for off Displaying Navigation DataFollowing summarizes the Other Menu Other Menu DescriptionOutputting Target Position Adjusting Brilliance of MarkersFunction Keys Suppressing NoiseMultiple Echoes Side-lobe EchoesIndirect Echoes Indirect echoes Blind and Shadow SectorsMaintenance & Troubleshooting Troubleshooting Self Test Mounting Model Where the temperature is more than 70 CUnpacking the antenna unit Siting, handling considerationsMounting platform Wiring and final preparationMounting Model 1932 Connections Fasten the cable gland assemblyWaveguide Groove Final preparationMounting Navigation aid, video sounder con- nectionYou will need an Nmea cable Mounting considerationsHeading signal can be connected to the HDG connector Heading Sensor ConnectionInput/Output Data List Preparation Tick boxAdjusting tune/video When adjustment is completed, the mes- sages disappearsEntering antenna height Adjusting sweep timing Adjustment range0.000~3.239nm Adjusting MBS Adjustment 0.00~0.25Magnetron heater voltage Setting a blanking areaThis page is intentionally left blank Menu Tree ARP-10 Option Limits, Visual alarm against lost Targets violating CPA/TCPATargets AP-4 Auto acquisition area is predefined between One minute after acquisition Vector still un- reliableAP-6 AP-7 ARP-10 Not usedMake sure the follows on Self Test menu Page Hatai Page Marine Radar Marine Radar
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