Magnavox MX 9012R User manual

MAGNAVOX

DGPS12CHANNEL

INSTALLATION

AND

SERVICEMANUAL

Preparedby

MagnavoxElectronicSystemsCompany

WestCoastDivision

2829MaricopaStreet

Torrance,Califomia90503

(°’MagnavoxElectronicSystemsCompany1993

WestCoastDivision

Magnavoxreservestherightto make changes to its products and

speciticationswithoutnotice.

PrintedintheUnitedStates of America

ABOUTTI·HS MANUAL

Congratulationson your purchase of a Magnavox DGPS 12Channel Navigator/Reference Station.

Itrepresents the Enest in DGPStechnology today.

Asfor thismanual, itprovides all the infomation you’ll need to install and testyour Magnavox

DGPSreceiver for proper operation. This manual isused forMX-9012R, MX 9112, or MX 9212

installations.Besides step-by-step procedures, you will find valuable information on what problems

toavoid and how bestto ensure trouble-free operation.

Theinstructions inthis manual followthe order in whichyou’re likely to use them. We suggest,

however,that youread this manualthrough before proceeding. This willhelp you see the overall

pictureof what you must do. In this way, you’ll be able to better anticipate installation

requirements.

Atthe back of this manual you’llfind twotear-out sheets: one is a Problem ReportSheet; the other,

aReader Comment Sheet. On the inside back cover is a Limited Warranty Statement and Service

RequestInformation. Ifyouwould like more in-depth information about Magnavox DGPS products,

referto the referenced documents,below.

Thankyou.

IMPORTANT NOTICE

GPSsatellites still remain inthe trialstages. Moreover, the stated policy of the U.S.Govemment

isto degrade accuracy for non·military use to within100 meters RMS. The Magnavox DGPS

receiversprovide increased accuracy when differentialcorrection isavailable.

REFERENCEDDOCUMENTS:

•Magnavox DGPS 12 Channel Navigator Operator’s Manual,R—7220: Describes how

toconnect and operate the Magnavox Navigator using the Magnavox developed

Controland Display (CDU) program. ..

•Magnavox DGPS 12 Channel Reference StationOperator’s Manual, R-7277:

Describeshow to connect and operatethe Magnavox Reference Station using the

Magnavox developedControl and Display(CDU) program.

•Magnavox DGPS 12 Channel Technical Reference Manual, R-7278. Contains

informationfor programming the Magnavox DGPS Navigatorsand Reference

Stations.

•NMEA-0183 Specihcation: Defines the hardware andsoftware requirements.

•EIA RS·232C Specification: Defines the hardware and softwarerequirements for an

RS-232data interface.

•EIA RS-422 Specification: Defines the hardware andsoftware requirements foran

RS-422data interface.

TABLEOFCONTENTS

Eiga

SYSTEMINSTALLATION...................................................1

UnpackingYourDGPSReceiver.......................................... 1

InstallationPreparation.................................................2

InstallingtheAntenna..................................................4

EasyAccesstoMaintenance....................................... 4

AvoidingVerticalObstructions......................................4

CableLengths..................................................4

AvoidingEMIEffects.............................................4

MountingtheAntenna............................................5

ProcedureforNavigatorAntennaInstallation ......................... 5

ProcedureforReferenceStationAntenna Installation ................... 8

InstallingtheDGPSReceiver........................................... 10

ChoosingaSafePhysicalEnvironment ............................... 10

AllowingforProperDistances..................................... 10

AllowingAccesstoRearPanel ..................................... 10

PowerandMemoryBackup.......................... Q ............ 11

Procedure.....................................................12

ConnectingtheReceivertoExtemal Equipment ............................. 14

StandardPortUses.............................................14

InitialPower-onConditions.............................................17

TestProcedure......................................................18

MAINTENANCE..........................................................19

TheReceiverAssembly................................................20

ReplacingtheCircuitCards............................................. 21

Disassembly...................................................21

RemovingtheCircuitCards....................................... 21

ReplacingtheCircuitCardsand Re-assembling the Unit ................. 23

ResettingtheReceiverMemory.......................................... 25

Procedure.....................................................26

ResettingtheSolidStateFuse ........................................... 26

Troubleshooting......................................................26

APPENDIXA............................................................27

ReceiverSpecifications................................................27

ILLUSTRATIONS

FiggrgLag;

1NavigatorAntennaMountingLocation Recommendations ...................... 5

2NavigatorVertical/HorizontalAntennaMounting and Dimensions ................ 6

3AntennaConnectorAssembly............................................ 7

4ReferenceStnVertical/HorizontalAntenna Mouning & Dimensions ............... 8

5ReferenceStnAntennaConnector Assembly (TNC) ........................... 9

6RearPanelofthe DGPS 12 Channel Receiver .............................. 11

7InstallationTemplate..................................................12

8MULTI-PORTInterfaceConnectorPin Assignments ......................... 15

9MagnavoxReceivertoPC Interface Connector and Cables ..................... 16

10ReceiverPartiallyDisassembled......................................... 19

11ExplodedViewofthe Receiver .......................................... 23

TABLES

Tablehg;

1SystemParts.........................................................1

2ToolsandMaterialsRequired for Installation and Maintenance .................. 3

3CompassSafeDistance................................................ 10

4ElectricalInterfacesandData Formats .................................... 14

5ReceiverPartsList................................................... 22

6TroubleshootingTable.................................................26

iii

SYSTEMINSTALLATION

UNPACKINGYOUR DGPS NAVIGATOR

Performthe followingthree steps and verify the packaged items against those listed in Table 1.

1.Remove the contents from the packingcontainer.

2.Save the packingcontainer. You may need it for storage or retum shipment.

3.Inspect each itemfor in·transit damage. Ifyou see evidence of damage,notify both

thecarrier and Magnavox (seethe back side of themanual cover).

TableI. System Pans

IDESCRIPTION Part Number 1

1Console Assembly, MX 9112 900555-808 1

1Console Assembly, MX 9212 900555-807 1

ConsoleAssembly, MX 9012R 900555-806 1

VoluteAntenna Assembly w/15m Cable (MX 9212, MX 9012R) 819766-801 1

LowProfile Antenna Assembly w/gnd Plane 723008-801

1(Mx 9112) 1

15Meter RG-6 Cable (MX 9112)567271-801 1

SystemInstallation Kit, including the following: 741699-803

PowerCable Assembly 1

MountingScrews (4)

CableTies (4) 1

Type-FCoaxial Connector

MountingTemplate 1

MatingDB-25P Connector

lnterlaceCable Assembly 567284-2 1

CDUProgram Diskette 471899-2

Magnavox DGPS 12 Channel R·72181

Installationand Service Manual 1

Magnavox DGPS 12 Channel R-7278 1

TechnicalReference Manual 1

Magnavox DGPS 12 Channel Navigator R-7220 1

Operator'sManual (MX9112, MX 9212)

Magnavox DGPS 12 Channel Reference Station R-7277 [

Operator'sManual (MX9012R, MX9112) 1

SYSTEMINSTALLATION

INSTALLATIONPREPARATION

InstallingyourDGPSreceiveris easy. But you do have important details to think about. Ifyou plan

yourinstallationcarefully,you’llsave time, work, and materials. More importantly, your receiver will

operatewithfewerproblemsand more efficiency. If this is your first GPS installation, we suggest

youallow6to8 hours for installation and test.

Herearethemostimportant items to consider before and during installation:

Antenna

·properlengthandrouting of cable.

safedistancefromhigh-powerantennas and transmitters.

appropriateheightandmountingsurface, providing a 360 degree view of

horizon.

Receiver

·safedistancetonavigating compass, equipments sensitive to small magnetic

fields,orequipmentsemittingstrong RF or magnetic Eelds.

physicalandvisualaccessibilityfor operator monitoring and peripheral

interfaces.

physicalenvironment.

Interface

•doyouneedspecial cables?

willyouneedanRS-422 to RS-232 converter?

Power

·cabling.

dcpowersource.

Nowthatyouknowwhat the issues are, let’s begin your installation. Table 2 lists the few tools

needed.

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SYSTEMINSTALLATION

INSTALLING THEAN'I'ENNA

Installingthe antenna is the mostcrutial part of the system installation. Howand whereyou install

yourantenna, withits cabling and integralpreamplifier, can greatly affect its sensing efhciency.

Figure1 shows youboth good and bad installationsites forthe navigator antenna.

Keepthe following guidelines in mind for an ideal site: Try to install theantenna where it has a

clearview ofthe sky whether onland, sea, or air.

EgsyAccess toMaintenance

Youwant to locate the antenna foreasy access and maintenance. Stay safely awayfrom

interferinghigh-power energy sources like radar and radio antennas. Locate the antenna at

least9 feet (about3 meters) away fromand outof the transmitting beamof high-power

transmitters.

AvoidingVertical Obstructions

Youshould not install theantenna closer than 15 feet (about 4.5 meters) to any large vertical

obstruction.The object is for the antenna tosee the horizon freely through 360 degrees and

5to 90 degrees above the horizon. Be sure that you have the baseof the antenna at least

3feet (about1 meter) above any large, metallic, horizontalsurface.

Note:Small diameter obstructions,such as masts, booms, and kingpins do notseriously

degradesignal reception, but such objects must noteclipse more thana few degrees of any

givenbearing.

CableLengths

Standardlengths of RG-6/U,75—ohm, coaxial antenna cable are 50 feet (about15 meters).

Ifyouneed a longer cable length than the installationkit provides, you can extend the cable

upto a total length of 100 feet, with additional RG-6/Ucoaxial cable connected by an RF

throughline connector (bullet).If youneed additional cable, order Magnavox part number

MB0101,50 FootCable Extension Kit. For cable lengths between 100 and200 feet (30 to

60meters), an in-line RF amplifier is required. Order Magnavox part number PA6817C,

CableLine Amplifier (does not includecoaxial cable).

AvoidingEMI Eaects

Tryto route thecoaxial cable between the antenna and the receiver connector directly; direct

pathsreduce electromagnetic interference (EMI) effects. Whendoing this, avoidrunning

cableclose to high-power lines, such as radar or radio-transmitter lines.

Ifyou must cross antenna cables, do so at 90degrees, so that magnetic fields are not

coupled.

Finally,consider EMI effectsrelated to antenna cable length; longer lengths can increase

EMIeffects.

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