Furuno 841 MARK-2 Uživatelský manuál

MARINE RADARMODELMODEL 841 MARK-2

ixEQUIPMENT LISTComplete Set.oNemaNepyT.oNedoCytQskrameR1tinuannetnA850-1700-BSR12tinuyalpsiD2M4-311-PDR13straperapS00890-30PS144-580-000tes14seirosse

xOptional Equipment.oNemaNepyT.oNedoCytQskrameR1reifitceR26-RP484-310-0001CAV001584-310-000CAV011684-310-000CAV022784-310-000CAV0322rezzuBlanretxE631

xi5ANAVVideo SounderGyroGyro ConverterAD-100*Equivalent to NMEA0183OptionIEC 1162*IEC 1162*(In/Out)(In)Fluxgate HeadingSensor C-2000Antenna UnitRemote

11.1 What is Radar?The term "RADAR" is an acronym mean-ing RAdio Detection And Ranging. Al-though the basic principles of radar weredevelope

2Figure 1-1 How radar worksABCDOwn ship(radar)DABCHeading lineTargetsOwn shipin centerRange and bearingof a target, relativeto own ship, arereadable

32. OPERATION2.1 Control DescriptionCursor padShift cursor, VRMand EBL; selectitems and optionson menu.Selects display mode;erases heading errorindica

4 0.5RangeRange ring intervalEcho trail, AUTO tuningEcho trail elapsed time,echo trail time, tuning indicatorGuard zoneFast Time Constant

52.4 TransmittingAfter the power is turned on and the mag-netron has warmed up, ST-BY (Stand-By)appears at the screen center. This means theradar is n

62.8 Adjusting GAIN, STC, A/CRAIN and FTCGeneral procedureThe [ECHO] key enables adjustment of thegain, STC, A/C RAIN and FTC.1) Press the [ECHO] key

7How to adjust A/C RAIN and FTC(suppressing rain clutter)The vertical beamwidth of the scanner is de-signed to see surface targets even when theship i

C 9-52, Ashihara-cho, Nishinomiya, Japan Telephone: 0798-65-2111 Telefax: 0798-65-4200 Your Local Agent/Dealer All rights re

8 1.5NM 0.5VRMrangeVRMTarget VRM EBL + CURSOR 0.675NM 220.9°R 0.675NM 308.7°RFigure 2-8 Measuri

9To erase the EBL, press and hold down the[EBL] key for about three seconds. 1.5NM 0.5EBLTargetEBLbearing VRM EBL

10Table 1-1 Menu descriptionMenuFunction1. Selects control panel backlighting; four is maximum backlighting.2. Selects brilliance for echo trails

112.13 Selecting the DisplayModeThe display mode may be selected with the[DISP MODE] key. Four modes are avail-able (with navigation input): Normal, N

122.14 The Window DisplayThe window display appears at the bottomright (or left) 1/4 of the display. Two typesof window displays are available: zoom

13WPT-UP (waypoint-up)An azimuth stabilized display in which theline connecting the center with the top ofthe display indicates the bearing to the “TO

14pressing the [GUARD] key. When this isdone, G (ACKN) replaces G (IN) (or G(OUT)).Press the [GUARD] key again to reactivatethe alarm. G (IN) (or G (

15corner on the display when the interferencerejection circuit is turned on.2.18 Suppressing NoiseInterferenceNoise interference appears on the screen

162.21 Echo TrailsYou can show the trails of targets in after-glow. This function is useful for alerting youto possible collision situations.Starting

17 1.5NM 0.5HDG 326.8° 66° 04. 00N166° 04. 00EVRM EBL + CURSOR0.675NM 240.1°R 0.646 NM 308.7

iiiiiiiiiiiii i"WARNING" and "CAUTION" notices appear throughout this manual. It is the responsibil-ity of the operator and the in

184) ON or OFF.5) Press the [ENT] key followed by the[MENU] key. ES appears at the top rightside on the display when the echo stretchfeature is on.No

19Canceling watchmanPress any key while the radar is transmit-ting. (Pressing a key during stand-by causesthe radar to go to warm-up condition.)2.27 E

202.30 Outputting CursorPosition to NavigatorCursor position (NMEA0183 data sentenceTLL) can be output to the navigator con-nected to this radar by p

21Radar horizonRadar is essentially a “line-of-sight” phe-nomenon. That means you have just aboutthe same range to horizon with a radar asyou do with

22On the other hand, hulls made from woodor fiberglass return much weaker echoes.Vertical surfaces, such as a cliff, are goodtargets provided they fa

23Indirect echoesIndirect echoes may be returned from eithera passing ship or returned from a reflectingsurface on your own ship, for example, astack.

24Blind and shadow sectorsFunnels, stacks, masts, or derricks in the pathof antenna may reduce the intensity of theradar beam. If the angle subtended

25This chapter tells you how to keep your ra-dar in good working order. Before review-ing this chapter please read the safetyinformation which follows

264.2 Preventative MaintenanceRegular maintenance is important for goodperformance. Always keep the equipment asfree as possible from dirt, dust, and

274.4 TroubleshootingTable 4-2 contains simple troubleshootingprocedures which you can follow to try torestore normal operation. If you cannot re-stor

iiSafety Instructions for the OperatorUse the proper fuse.Use of a wrong fuse can result in fire orpermanent equipment damage.Do not use the equipmen

284.5 Self TestThe self test facility checks the keyboard,ROM and RAM for proper operation. Youmay run the test as follows.1) Press the [MENU] key.2)

29¡ The compass safe distance should be ob-served to prevent deviation of the magneticcompass.ssapmocdradnatSssapmocgnireetSm9.0m7.0¡ Do not paint the

30Mounting platformHoles for antenna unit:The mounting surface must be parallel withthe waterline and provided with five holeswhose dimensions are sho

317. Pass the cable through the hole at the bot-tom of the radome base.8. Secure the cable with the cable clampingplate and gasket. Ground the shield

32• Make sure you allow enough clearanceboth to get to the connectors behind the unitand to allow you to get your hands in onboth sides to loosen or t

33ConnectionsConnect the signal and power cables, theground wire and optional equipment as shownin Figure 5-12.RPHDGNMEADJ-1OPTIONMARINE RADARTYPESER.

34Navigation aid, video sounderconnectionIf your navigation aid can output data inNMEA 0183 data format, your vessel’s posi-tion in latitude and longi

35J55 (NMEA)SPU9180TLL, RSDJ61NavaidEchosounderVideo plotterMODEL 841 M2The position data from navaid can beused for the echosounder if a videoplotter

365.4 Initial Adjustment of PictureFollow the procedure below to obtain properradar picture.1) Press the [POWER] key on the display unit.The display s

375.6 Entering Initial Settings1) At the Installation Setup 1 menu, press thecursor pad to select Key Beep. (Key Beepturns on or off the buzzer which

iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii iiiSafety Instructions for the InstallerDo not work inside theequipment unless totallyfamiliar with electrical

381) Transmit the radar on the shortest range andadjust the sensitivity and STC.2) Visually select a straight echo (harbor wall,straight pier).3) Disp

vFOREWORD ... vSPECIFICATIONS ... viiEQUIPMENT LIST ... ixCONFIGRATION ...

viCongratulations on your choice of theFURUNO MODEL 841 MARK-2 MarineRadar. We are confident you will see whythe FURUNO name has become synony-mous w

viiAntenna Unit1. RadiatorPrinted array2. Radiator length54 cm3. Horizontal beamwidth3.9°4. Vertical beamwidth20°5. Sidelobe-20 dB within main lobe-23

viiiStand-by (ST-BY), Echo Trail Time(TRAIL), Variable Range Marker(VRM), Range, Range Ring Interval,Range and Bearing to Cursor (+), OffCenter (OFF