Lowrance LMS-10 Loran-C User manual

LMS-1O
Loran -c
Receiver
INSTALLATION ANDOPERATION
INSTRUCTIONS
LITI-lO INU.S.A. 988-0116-03 •LOWRANCE ELECTRONICS,INC.
12000E.SKELLY DR., TULSA, OK 74128
PDF compression, OCR, web-optimization with CVISION's PdfCompressor

75
WARNING!
THISLORANSHOULD BEUSED ONLYASAN AID
TO NAVIGATION. ACAREFULNAVIGATOR
SHOULDNEVER RELYON ONLYONE METHOD
TO OBTAINPOSITION INFORMATION.
NOTICE:
MAKECERTAINTHELORANIS DISPLAYING THE
CORRECTPOSITION IN LATITUDE/LONGITUDE
BEFORENAVIGATING WITHTHIS PRODUCT. THE
POSITION MUST BECORRECT FOR THE NAVIGA-
TIONFEATURES INTHIS UNITTO WORK
PROPERLY.
170°
PDF compression, OCR, web-optimization with CVISION's PdfCompressor

TABLEOFCONTENTS
LORAN-Genera] 1
ACCURACY 1
HOWLORAN-C WORKS 1
INSTALLATION -DpIay Unil 3
INSTALLATION - LC-1 Loran-C Module 4
POWER CONNECTIONS
LORAN OPERA11ON- INITIALIZATION
SELECT CR1 7
ENTERING INITIAL POSITION - LAT/LONG 8
CYCLE ERRORS AND SNR
AUTOMATICANDMANUAL MODES ID
MANUAL STATION SELECTION 12
Viewing
Stations inUse 12
Viewing
Reornerided Stations 12
Selecting Stations 13
PRIMARYANDALTERNATESOLUTICNS 14
DISPLAY - Overview 15
TD/LL 16
HEADING (HDG) 17
TIMETOGO (TIC) 17
DISTANCET000(DTG) 18
SPEED OVERGROUND 18
VELOCITY MADE GOOD 19
TRUE/MAGNETIC BEARING 19
CROSS TRACK ERROR (X1E) 20
CROSSTRACKERRORPERARROW 21
SIGNALTONOISE RATIO (SNR) 21
FixDUALITY 22
I-IOWTOSAVEAWAYPOINT 22
Saving
CurrentPosition (Quick Save
Feature) 22
EnterNew
Waypoint -LatitudelLongitude 23
EnterNew
Waypoinl
-
TDs 25
ERASING AWAYPDINT 28
WAYPOINTRECALL 27
WAYPDINTCOUNTEROFFSET 28
GOTOWAYPOINT 28
VIEWDESTINATION WAYPDINT 29
VIEWSTARTING WAYPOINT 29
ROUTES 29
Creating aRoute 29
Following aRowe 31
Can00lling aRoute 31
Eraaing aRoute 31
ALARMS 31
AnochorAlarrn 32
Arrival
Alarni 32
ASFCORRECTION
NMEAOUTPUT 35
24HOURCLDCK-TIMER 36
LIGHTS 36
CLEAR LOWERDISPLAY 37
Fl andF2 38
RESTARTLDRAN 39
SeledNewORI 39
EnterNewInitial Poaition 40
RESET 41
VIEWING T.D.SINUSE 42
MAGNETIC VARIATION 42
VERSION NUMBER 42
STAT 42
SIMULATOR 43
HOWTO OBTAIN SERVICE 43
COMMAND LIST 44
KEYBOARD 2ndFUNCTION LIST 45
FACTORY DEFAULTS 45
NORTH PACIFIC LORAN-C CHAIN GR19990
REGONALMANAGERCOMMANDER. PACIFIC MREA.
ALAMEDA.CA
CHAIN MANAGER:CDMMANDER. 17THCDASTGUARD DISTRICT. JUNEAU, AK
COORDINATOR OFCHAIN OPERATIONS LOCATION: LORMONSTAKODIAK. AK
CONTROL SITE:LORMDNSTA KODIAK, AK
D53IG. STATIIY4 COOn. COSU.
luuI XMTTrER PWR 1KW)
TRANOENT
ANTENNA 604
ECD NOTES
MASTER StPALL
AK 670912301 170l000.eW ANTFFN.42 325 625FT MOIOPOI.E 0.0
XRAY ATru
AK 624944.ON 1731040.0! 11000/ 3a7L25 ANTFPW-42 320 62SF] 601OLE 0.0
YANKEE PORT
CLARENCE
AK
0t14403N 2t000/
1605312.6W 3058,05 MVFR4-42 10 1350Ft 601tW0L5 .0,6
ZULU NR0W
CAPEAK 57262029) 43000/ 162=113W 3600.45 AN/FPN44A 400 626FT 0fl4oPCt0 0.0 OUALRA1EW/OHI7000
74
Copyright
© 1989, LowranceElectronics,
Inc.
Allrightsreserved.
Allfeaturesandspecifications subject tochange withoutnotice.
PDF compression, OCR, web-optimization with CVISION's PdfCompressor

LORAN-C
ICELANDICCHAIN
GRI 9980
LEGEND:
•TRANSMITTiNG
oCONTROL
*MONITOR
73
Approximat.LimitofConre—-1:3 SNP md
4NMFix
AccurmeyjSG%
2dRMS).Noise46dB
M SANDUR
W ANGISSOQ
X EJDE
PDF compression, OCR, web-optimization with CVISION's PdfCompressor

LORAN-GENERAL
Theword"LORAN"isshort
forLOng RAngeNavigation. It'sanaviga-
lionsystem thatuses
powerful low
frequency(100kHz)radiotransmit-
tersandsensitivereceivers. Withthis
system,youcan determine your
position
overlongdistances.
Loranwasdeveloped and used
during
WorldWarII. Atthattimeit
was
calledLoran-Aand
operated atahigherfrequency. Research and
development continued during
thefifties. Thecurrent
version,
Loran-
C,was introduced inthesixties. Itworksoverlonger
distancesthan
Loran-Aandit'seasiertouse.
ICELANDIC LORAM.C CHAINGRI9980
REGIONAL MANAGER.COMMANDERCOASTGUARDACTIVITIES EUROPE,LONDON, UK
CHAIN MANAGERCOMMANDERCOASTGUARO ACTIVITIES EUROPE.LONDON, UK
COORDINATOR OFCHAIN OPERATIONSLOCATIONLORMONSTA KEFLAVLK. ICELAND
CONTROLSITE;LORMONSTAKEFLAVIK ICELAND
D55. &ATJa1 C(R. CDULS. Iv,) (MITtEn PWR 1KW) TRMSSMff
ANTB4MA N62I LCD NOISE
56867EA SN4DUA
ICELAND 6454 26.64 5521,5W AWFFSJ.45 '500 I350FT Ma40Pa6 0,0
W24EKEY ANGIS000
OAES4LAND 5959I7N 451627.5W 11055!- 4068.62 NQFFW4S 5flIOLE 765 625FT +1.0 DUALRATEW?09l7920
XAAY EJDE.FAEAOE
IS..OESWFK 621755.64 070426,5W 35555! 2814$4 NWFPN-44 MIY4C9OLE 325 625FT 0.0 DUALRATEOWI757O
ACCURACY
Theabsolute
accuracy
ofLoranisbetween 0.1 and0.25nautical
miles, depending onyour
location. Repealableaccuracy(yourability
toreturntothesame
spot) is100 feet orbetter. Thedifference
between thetwotypes
ofaccuracy isimportant. Absolute
accuracy
tells
youwhere youareonthemap. Repeatable accuracy
lets youfind
yourwaybacktothesame place
timeaftertime.
However,
theaccuracyyou experience maynotbeasgoodasthe
numbersabove suggest. Thecrossing angleofthelines ofposition
affectstheaccuracy. Thesharper the
crossingangle,themore
chanceforposition error. A
ninetydegreecrossingangleisbest,butit
canbeaslowasthirtydegrees withoutalarge position error.
Ifyouwishtodoublecheck
yourLoran, firstpicka spotonthechart
thatis
clearlymarkedwith latitude/longitude marks. Thengotoit.
Once
youarrive, lettheLoran settle, thencompare theposition
informationontheLMS-10tothechart. Itshould beveryclose.
HOWLORAN-CWORKS
TheLoransystem consistsofthreetofivetransmitterstations.These
are calleda"chain." Theletter"M"
designates
themaster station
insidethechain. Theotherstations in thechainarethesecondaries.
Theirnames areW,X,Y,and
Z,although
notallchains havefour
secondary
stations. Thesecondarytransmitters aresynchronized with
themasterwhichtransmits atprecisetime intervals. Thistime interval
iscalledthe
GroupRepetition Interval orGRI. Eachchainhasa
differentGIRl.
72 1
PDF compression, OCR, web-optimization with CVISION's PdfCompressor

Thesecondary
stations transmitatprecise
timeintervalsafterthe
masterstationtransmits. Since thesetransmitters arelocated hun-
dredsofmilesapart, ittakesadifferenttimeforthe
signalsfromeach
transmitter
toreach you. TheLoran receivermeasuresthistime
differencebetween themasterand twoofthe
secondaries,theLMS-
10automatically choosesthebestmaster-secondary pairsforyour
location. The
timedifference or(TO) ismeasured inmicro-seconds.
Plotting
the
TOonachartwithLoran-C linesresults
withyourposition
somewhereonalineofposition (LOP). Alineof
positionisanimagi-
nary
lineonwhichthetimedelay
between themasterandoneofthe
secondaries isthesame. Inthisexample theboatislocatedsome-
whereonthe14605.2 LOP.
TheLoran receiverthen measuresthetimedifferencebetween the
masterandanother
secondary. Inthisexample
it's31882.8. If
you
plotthisLOPonachart, you'll notice
thatitcrossesthefirstline-of-
position. Yourposition
isattheintersectionofthetwolines.
2 71
LORAN-C
NORTHWEST PACIFIC CHAIN
GRI 9970
0
Asprnlwdn
LS,toft.nr.p
—13$flrid
S)MFis
£ncy(P5% 2flMS(.
Pa...44d1
I II IWOJIMA
W MARCUS IS.
X HOXXAIDO
— ., t GESASHI
1 2 3ARAGADA
—. —-_ __..._.___.___ 'C.
C -.
PDF compression, OCR, web-optimization with CVISION's PdfCompressor

AllLoran-C receivers workonthisprinciple. Mostmodern receivers
also displaylatitudeflongitude. Thereceivertakes
theTD information
and, usingacomplex
mathematical formula, convertsittolatitudef
longitude position data. You candisplay
both TD'sandlatitude!
longitude ontheLMS-10todetermineyourposition.
It
youwishtoknowmoreabout Loran-C,ordertheUnited States
CoastGuard's book"Loran-C USER HANDBOOK." It'sanexcellent
bookthatdescribesLoran in
greater
detail.
Loran-CUser's Handbook
COMDTINST
Ml6562.3
Superintendent ofDocuments
U.S. Government Printing Office
Washington,
D.C.20402
Code
#050-012-00171-5, 1980
NORThWESTPACIFICLORAN.CCHAIN CR19970
REGIONAL MANAGER COMMANDER. PACIFICAREA, ALMAEDA, CA.
CHAIN MANAGERCOMMANDER, 14THCOASTGUARD DISTRICT,I-IONOLULU, HI
COORDINATOR OFCHAIN OPERATIONS LOCA11ON. COMMANDER. FAREASTSECTION. YOKOTA,
JAPAN
CONTROL SITE
LORMONSTAYOKOTA, JAPAN
DES'S. &ATTa4 CDOR. COBIL
lusI XMITrER PWR (XW} WNSMFr
ANTENLA N0l EUD NOTEE
MASTER M0JI
JAPAN 244E03.E14 141193020 AWFFN-45 1815 1380FT Magopa.E 0.0
WHEXEY IMRCUEISLAND
JAPAN 241707.914 1535853,2E 110801 4283.58 ANIFPR145 2150 1280FT
MWOPOLE 0.0
XMY HOKKAIOO
JAPAN 424437.111 1134309.25 38080! 8686.17 AN/FPW4S 800
500
G2SFT
Ma4OPOLE 0.8 DUALRATEW/0RI5970
YANKEE GESASHI
JAPAN 283825.011 1280886.45 58080/ 448328 ANPPN'IS 828FT Ma40LE 0.0 DUALRATEW10918970
ZULU BARRIGADA 1327E0.IN
444933.00 2528.84$ 81080 7SOFT
Thereisasmall charge forthebook.
INSTALLATION
-Display Unit
Mountthedisplay unitinany convenient location, provided
thereis
clearance whenit'stiltedforthebest
viewingangle. Holesinthe
bracket'sbaseallowwoodscreworthrough boltmounting. Place a
piece
ofplywood onthebackofthinpanels
tosecurethemounting
hardware Makecertain
thereisenough room behindtheunittoattach
the
powerandLoran module cables.
70 3
PDF compression, OCR, web-optimization with CVISION's PdfCompressor

Youcan routethecablesthrough a
three-quarter inch hole
in
the
mounting surface. First, bringtheLoran module'scable
up
through
the
hole, thenpassthe
power
cabledownit. Afterrouting
thecables, fill
theholewithsiliconerubberadhesive (RN). Offsetthebracket to
coverthehole. Routethecables through theslotin thebracket.
INSTALLATION
-LC-1 Loran-CMODULE
Enclosed withyour
theLMS-1OisaLC-1 Loran-C module.Thiscon-
tainsthe
complete
loran receiver. When choosing amounting location
fortheLC-1,remember toinstallthe
LC-1 whereit'sclearofotheran-
tennas, wires,masts,
orother
obstructions. Ahighlocationispre-
ferred, however forlightningprotection, theantennashouldn'tbethe
highestpartoftheboat. Theantenna shouldbemounted vertically.
Makecertain itisasfaraway aspossible fromVHFradioantennas.
Improperperformance canalsooccuriftheantennaismounted too
closetometal
objects
suchastunatowers. Again,alocation
that
places theLoranassembly in theclearispreferable
toonethatis high
and
obstructed.
You must
purchase
aneight footstainlesssteelorfiberglasswhip
antenna. Thethreadsare standard318"-24forthe
whip. A
ratchet
mountbaseismostcommonly used tomounttheLoran
totheboat.
Thebasemounting
threads are conventional 1"-14 machine thread
(NOTpipethread). Thisallowstheuseofstandardantenna
mounting
hardware.
Tighten
allhardware securely.
4 69
SLOT
PDF compression, OCR, web-optimization with CVISION's PdfCompressor

ThecablesuppliedwiththeLC-1 isthirtyfeet
long. Donot cutthe
cablelilt'stoo
tong. Instead,coil and storeitoutoftheway. An
extension cableisavailable itthecableistooshort. Askyour
dealeror
callyourlocalservicecenterortheLowrance Factory
Customer
Service department formoreinformation.
TheLC-1 canbeattachedtoaswivel bracket orhollow extension
mast, itdesired.
POWER CONNECTIONS
TheLMS-1
0worksfromatwelve-volt batterysystemonly. Youcan
attach thepower cable
toanaccessory orpowerbuss,however ifyou
haveproblems withelectrical interference, thenattachthepower
cable
directly
tothebattery. Ifthecableisnotlong enough, splice
#18 gauge wire ontoit.
Thepowercablehasthreewires; red,white,andblack. Red isthe
positive lead, blackisnegative orground. Attachthein-linefuse
holdertotheredlead asclosetothepowersourceaspossible. For
example, ifyou have toextendthepower
cabletothebattery or
powerbuss,
attach thefuseholdertothebattery
orpowerbuss. This
willprotectboth theunitand thepower cableintheeventofashort.
Thewhitewire isforaNMEA interface. TheLMS-10sends
steering
dataforan autopilot through thiswire. Ifthewhitewireisnotused,
tape
theend sothatitcannot short.
NORTHEAST U.S. LORAN-CCHAIN GRI9960
REGIONALMANAGERCOMMANDER. ATLJTICAREA. NEWYORK.
NY
CHAINMANAGER COMMANDER.ATLANTICAREA, NEWYORK, NY
COORDINATOR OFCHAIN OPERATIONSLOCATION:LORSTA SENECA, NY
CONTROLSITE:LORSTASENECA,NY
00210. STATIa4 COCA. CDEU.
(56) XMTTER PWR (KWI IRAPffiMIT
ANTBNA POH ECU NOIES
WASTER SENECA, NY 424250.621
754933.9W MOIFFT'144 800
(56HC0SI 700FT'
-
MGIOFOLE 0.0 DUALRATE500915972
WHISKEY CARIBOU, I.E 4648271
575537.7W Il0 2757.20 N4WP9442 360 SLT 0.0 DUAJ. BAlEW/OBE93O
XRAY NNJI1JCKET
MA 4115ThEI.
555835.1W 250 1502.93 MUFPR412 320 525FT 05 MG4OFOLE DUALRATEW/0RI5930
YAM(EE CARQJ(A
EECH,NC 340346.IN 775446.7W 39060! 3221.64 WFFI4A2 550 'TIP 0.0 DUALRATEW/ORI7SSO
ZLLU DANA*4 3551 (7.91 540
6729121W 3152.20 A9UFFS+44 460 625PT M4OPQ.E '5.5 DUALRATEW!0R18570 To"P"
connector
SPUCEANDTAPE.
68
FUSE
HOLDER
TOAUTOPILOT'S NMEA INPUT
5
PDF compression, OCR, web-optimization with CVISION's PdfCompressor

Toconnectanautopilot totheLMS-1O,attach ashielded, twistedpair
cablefromtheautopilot's NMEA intputtothewhitewireontheNay-
Guide's power cable. Soldertheground conductor
ofthetwistedpair
and theshield totheblackwireon
the
power
cable. Donot connect
theshield totheautopilot. See
yourautopilot's manual formore
wiringinstructions.
Oncethecableisconnected, theproper output
mustbeselected.
SeetheNMEA
Outputsectionformoreinformation.
LORANOPERATION
Initialization
TheLoran must beinitializedor"toldwhere itis"the
veryfirsttimeit's
used. Itthen retains ft'sposition inmemory eachtimepoweristurned
off. If
youdon'ttraveloverahundred milesfromthelast timeyou
usedtheLoran, youshouldn't
havetorepeatthis
step.
ToinitializetheLoran, firstpress
theONkey. You shouldseethe
message "initialcoupler",
thenthefollowing screenappears:
Youcaninitializetheloran either
byentering yourpresentposition
in
latitude/longitude coordinates, orbyentering theGRIforyourarea.
Press theTDI keytoselecttheinitial position, ortheTD2keytouse
theGRI. Operation instructionsforthe"SelectGRI" menu and "Select
Initial Position"areshown next.
LREOLORTD1
5 TD2
5Q0
40°
6 67
PDF compression, OCR, web-optimization with CVISION's PdfCompressor