MX421 High Precision GPS Sensor Installation Manual · Smart Antenna Sensors INSTALLATION MANUAL ... 1 MX421 Installation Manual ... solution error exceeds 100 meters,

MX421MX421MX421MX421MX421 High PHigh PHigh PHigh PHigh Precision GPS Sensorrecision GPS Sensorrecision GPS Sensorrecision GPS Sensorrecision GPS Sensor

InstallationManual

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MX421-10MX421B-10

Smart Antenna SensorsINSTALLATION MANUAL

MPORTANT NOTICE!!

THE MX421 GPS/DGPS SENSOR IS AN AID TO NAVIGATION ONLY. UNDERNO CIRCUMSTANCES SHOULD IT BE USED IN LIEU OF AUTHORIZED GOV-ERNMENT CHARTS. ITS ACCURACY CAN BE AFFECTED BY MANY FACTORSSUCH AS EQUIPMENT DEFECTS, ENVIRONMENTAL CONDITIONS, OR IM-PROPER OPERATION. THE USER IS RESPONSIBLE FOR SAFE NAVIGATIONOF THE VESSEL. THIS INCLUDES CONSULTING AUTHORIZED GOVERNMENTCHARTS AND EXERCISING COMMON PRUDENCE AND NAVIGATIONAL JUDGE-MENT AT ALL TIMES.

MX MarineA Division of NAVICO, Inc.

23868 Hawthorne Blvd., Suite 201Torrance, CA 90505-5908

U.S.A.

www.mx-marine.com

NAVICO UK Ltd.Premier Way, Abbey Park

Romsey, HampshireSO51 9DH

United Kingdom

www.navico.com

P/N 723594 Rev.DFebruary, 2008

NAVICO, Inc. 2008

NAVICO reserves the right to make changes to its products and specificationswithout notice.

How To Contact Us?

Contact your local Leica dealer for:• Installation, Service, & Technical Support• Sales of Accessories• Hardware and Software Upgrades

Unlike many other consumer electronics industries which only sell consumer elec-tronic devices, your marine dealer is often your best advisor for installation andservice of your new GPS receiver. MX Marine strongly encourages you to utilize theknowledge and experience of your sales and service dealer.

Should you need to contact us directly for new sales, upgrades, repair service, ortechnical support, we can be reached at:

International:MX Marine (USA)A Division of NAVICO, Inc.23868 Hawthorne Blvd., Suite 201Torrance, California 90505USA

+1-310-791-8213 Telephone (International)+1-310-791-6108 Fax

In Europe:NAVICO UK Ltd.Premier Way, Abbey ParkRomsey, HampshireSO51 9DHUnited Kingdom

+44 (0)1794 510010 (Telephone)+44 (0)1794 510006 (FAX)

NOTES

Table of Contents

Introduction.....................................................................................1MX421 Operation ..........................................................................2Antenna Connector ........................................................................3Supplied Equipment .......................................................................4MX421 Mounting Guidelines ..........................................................5Installation Procedure .....................................................................6Antenna Mounting ..........................................................................6Power Requirement .......................................................................8Antenna Cable Assembly ...............................................................8MX421-10 Connector Configuration .............................................10MX421B-10 Connector Configuration .......................................... 11Data Interface to MX420/2 or MK12 CDU ....................................12Data Interface to MX420/8 or MX420/AIS CDU ............................13Data Interface to MX500/510/512 CDU ........................................14Data Interface to PC or Non-MX Marine Navigation Systems .......15Specifications ..............................................................................16Data Output Protocol ....................................................................19PRODUCT WARRANTY AND LIMITATION OF LIABILITY .............26

1

MX421 Installation Manual

IntroductionThis manual describes the operation and installation of the MX421 high-precisionsmart antenna.

The MX421 GPS and DGPS smart antennas were designed to work with the latestMX Marine Control and Display Units (MX CDU) or other NMEA 0183 compatiblenavigation devices. The MX421 can achieve position fix accuracies of better than 1meter with differential correction or better than 3 meters without correction.

Antenna models covered in this manual are:

MX421-10 - a GPS only smart antenna. This antenna can accept differential cor-rections from an external beacon receiver. A 1-PPS timing output is op-tionally available.

MX421B-10 - a combined GPS and Differential beacon smart antenna. The built-in beacon receiver normally operates in auto mode when used as a stand-alone smart antenna. 1 PPS timing output is also optionally available.

These models use identical housing styles. To determine the particular model ofantenna you have, please check the model number inscribed on the serial numbertag located at the underside of the antenna housing.

Before installing the MX421, please read this manual carefully to ensure properinstallation and operation of the unit.

2


MX421 OperationThe MX421-10 and MX421B-10 sensors are highly integrated GPS and DGPS smartantennas that are fully automatic and does not require user intervention to operatein most applications. They will automatically search for available satellites as soonas power is applied. It will find its present position as soon as enough satellites hasbeen acquired and tracked. Typically, it will take about 1 to 2 minutes to find itsposition when good satellite ephemeris data is in its memory.

The internal 2-channel beacon receiver in the MX421B-10 continuously monitors allbeacon signals available in your location. The first channel tracks the primary sta-tion while the second channel searches for other available beacons. Should it finda superior signal it will automatically switch the primary channel to the new station.

The combined performance of the high-precision 12-channel GPS and 2-channelbeacon receivers provide a more accurate and reliable position fix, usually within 1meter or less.

The MX421B-10 was designed with an H-Field beacon antenna for better on-boardelectrical noise immunity and requires no grounding.

Receiver Autonomous Integrity Monitoring (RAIM)

RAIM is a special software algorithm in the MX421 program which gives the opera-tor timely warnings when the GPS system accuracy is questionable. This featurerequires at least five or more GPS satellites to operate properly. If the positionsolution error exceeds 100 meters, a “RAIM Unsafe (R-)” or ”RAIM Caution (R?)alarm will be indicated in the MX CDU. This means that the accuracy of the positioncan not be guaranteed to be very accurate at that point in time. The operator isadvised to use the GPS cautiously for navigation until the RAIM indicator switchesto (R+) denoting safe RAIM condition.

Position errors may be caused by unhealthy satellites, incorrect pseudoranges,poor satellite geometry, excessive atmospheric interference and problems at par-ticular reference stations.

3


Antenna ConnectorThe 10-pin black plastic connector at the bottom of the antenna housing providesthe necessary interfacing between the MX421 smart antenna and the MX MarineCDU or other NMEA compatible devices. Below is a table listing the pin assign-ments and wire color codes of the MX421 antenna cable.

Pin# Wire Color MX421-10 MX421B-10 1 BLK Negative Ground 2 RED +9 ~ 32 VDC 3 BLU MX Proprietary message (MPM) In (-) 4 BRN MX Proprietary message (MPM) In (+) 5 ORG GPS Out (-) 6 GRN GPS Out (+) 7 YEL RTCM In (-) Beacon Status Out (-) 8 WHT RTCM In (+) Beacon Status Out (+) 9 PRPL 1 PPS (+) 10 GRY 1 PPS (-)

1

6

91 0

23 8

4 75

Pin# Wire Signal 10 Gry 9 Purple 8 White RTCM In + (or Beacon Status Out +*) 7 Yellow RTCM In - (or Beacon Status Out -*) 6 Green GPS Out +5 Orange GPS Out -4 Brown MPM IN+3 Blue MPM IN -2 Red + 9~32 VDC1

Black

Negative

GND.

1 PPS Out -1 PPS Out +

* Not available with MX421-10 models

4


Supplied EquipmentThe following items are supplied with the MX421 Sensor:

Description Part Number

MX421-10 9525 200 80100or,MX421B-10 9525 200 80110

MX421 Installation Manual 723594

MX421 Sensor Standard Package

5


MX421 Mounting Guidelines• Install the MX421 antenna where it has a clear view of the sky around it.• Locate the antenna for easy access and maintenance.• Locate the antenna at least 10 meters away from and out of the transmit-

ting beam of radar, INMARSAT and other high-power transmitters.• Mount the antenna low to avoid excessive position and speed errors while

underway.• Mount the antenna as far away as possible from large metal structures.

• Mount the antenna about 1 meter away from the compass.

1 M.3 M.

INMARSATANT.

RADAR ANT.

MX MARINEANT.

VHF OR MF ANT.

MAINMAST

MOUNT THE MX521/421 10 M. (Min) FORWARD OF MAIN MAST

10 Meter (min.)

10 M.

10 M

(min

)

Antenna Location Diagram

Note: If you are not sure if the chosen location is appropriate, you can mountthe antenna temporarily and operate the unit. Monitor the operation ofthe MX421 while you turn on other on-board electronic equipment. Movethe antenna around until the MX421 operates satisfactorily then mountit permanently.

6


Installation ProcedureAntenna MountingBracket Mount

The MX421 mounting thread is an industry standard fitting for VHF antenna mount-ing (1 inch, 14 TPI) . This enables the antenna to be mounted on a wide range ofmounting brackets, including the swivel joints, commonly used for angled surface.

Note: Hand-tighten the antenna onto the bracket until snug. Do not over-tighten.

Mounting Surface

1” Diameter/14 TPIMetal Mounting Bracket(not supplied)

Drill 1/4” diameter hole for cable access

Secure cable with plastic tie-wraps(not supplied)

MX421 Bracket Mount

Surface Mount

The MX421 may also be surface-mounted. Before making cuts, verify if there isenough clearance underneath the mounting surface. A minimum of 5-inch clear-ance at the bottom of the antenna is needed to accommodate the lower section ofthe MX421 housing, connector and antenna cable bend see Figure 3.

Choose a location that has clear view of the sky. Make sure there are no majorobstructions or large metal fixtures close to the antenna. The GPS antenna relieson direct ‘line-of-sight’ signal reception. If you are unsure that the chosen location

7


is suitable, it is advisable to mount the antenna temporarily and verify proper opera-tion. Move it around until you are satisfied with the results.

Refer to Figure below for surface mounting considerations. Cut a 5 1/4” diameterhole on a horizontal mounting surface and drill the four mounting screw holes asshown.

Fasten the antenna by using 2-mm size stainless steel metric screws (4 places).Use a marine grade caulking compound to seal between the mounting surface andthe bottom of the antenna housing.

8


Power RequirementExternal power supplied to the MX421 must be within 10.5-32 VDC for best operation.To protect the circuitry in the antenna, the voltage level must be within these limits.Negative grounding is required. The MX421B-10 draws about 230 mA. at 12 VDC.An in-line fuse or circuit breaker rated at 2 amp. is recommended for overloadprotection.

When the MX421 is connected to a MX Marine control display console (i.e MX420or MX500), the antenna power will be supplied by the display unit.

The RED wire connects to the +12 VDC power, while the BLACK wire is the negativereturn. Although the MX421 has a reverse polarity protection, it is prudent to makesure that proper polarity is observed before making the connection.

Note: Reverse polarity connection may damage the unit. Always checkpolarity before connecting the antenna cable.

Antenna Cable AssemblyThe antenna cable assembly is made up of five shielded twisted-pair wires and 10-Pin male connector. The molded connector is pre-installed in the factory. Antennacable with two connectors are available for the MX500 CDU model.

The antenna cable run must be surveyed carefully to determine the appropriatecable length. Wire splicing of antenna cable should be minimized to prevent signalloss and potential interference.

The antenna cable assembly is not included in the MX421 package and must beordered separately. Below are available lengths in stock:

Part Number LengthAntenna Cable with One 10-Pin Connector (for all models):3508 102 70170 20 meter3508 102 70180 40 meter3508 102 70640 60 meter3508 102 70185 80 meter (Special order only)

Antenna Cable with two 10-Pin Connectors (for MX500 Series):

500 100 1006 20 meter500 100 1007 40 meter

9


Below is a diagram showing the pins and wire color-coding of the antenna cableassemblies.

Pin# Wire Signal 10 Prpl/Gry 1 PPS -9 Purple 1 PPS +8 White Beacon Status Out +*7 Yellow -*6 Green GPS Out +5 Orange GPS Out -4 Brown MPM In+3 Blue MPM In-2 Red +12~32 VDC1 Black Negative GND.

Beacon Status Out

* Not available in MX421-10 model

10-Pin Female Connector(one connector cable)

10-Pin Female Connector/s( two connector cable)

Length

Length

Shielded Twisted Pairs

Antenna Cable Assemblies

10


MX421-10 Connector ConfigurationThe MX421-10 is GPS only antenna configuration. It transmits the NMEA data at4800 baud, 8 bits, 1 stop, no parity. Figure below shows the MX421-10 connectorpin assignments.

1

Pin# Wire Signal 10 Prpl/Gry 1 PPS -9 Purple 1 PPS +8 White RTCM In + 7 Yellow RTCM In -6 Green GPS Out +5 Orange GPS Out -4 Brown MPM In+3 Blue MPM In-2 Red +12~32 VDC1 Black Negative GND.

23

456

78

910

Interface Cable Pin Configuration for MX421-10

Where:Pins 1 & 2: are used for GND and 12 VDC input.Pins 3 & 4: MX Marine proprietary message (MPM) input port.Pins 5 & 6: GPS output to the MK12, MX420 (CDU) or other NMEA 183 compatible

devices.Pins 7 & 8: connect to an external beacon receiver like the MX Marine MX41R.Pins 9 & 10: 1 PPS output

External Differential Beacon Receiver ConnectionDifferential corrections from an external beacon receiver can be connected tothe MX421-10 (GPS only) model. Connections are done directly to the yellow(Pin 7) and white (Pin 8) wires of the MX421-10 I/O cable. It will accept standardRTCM SC-104 signal at 4800 baud.

11


MX421B-10 Connector Configuration

The MX421B-10 antenna configuration is a combination GPS and beacon receiverin one. The built-in differential receiver operates in auto-search mode in the MX421B-10. It enhances the accuracy of the GPS receiver to provide a more accurateposition solution. Position accuracy better than 1 meter is possible with thisconfiguration.

1

Pin# Wire Signal 10 Prpl/Gry 1 PPS -9 Purple 1 PPS +8 White Beacon Status Out + 7 Yellow Beacon Status Out - -6 Green GPS Out +5 Orange GPS Out -4 Brown MPM IN+ 3 Blue MPM IN- 2 Red +12~32 VDC1 Black Negative GND.

23

456

78

910

Interface Cable Configuration for MX421B-10

Where:Pins 1 & 2: are the GND and 12 VDC power input.Pins 3 & 4: MX Marine proprietary message (MPM) input port.Pins 5 & 6: GPS output to the MX420 or other NMEA 0183 compatible

devices.Pins 7 & 8: Beacon monitoring signal output. Sends the SNR, Signal and

Frequency to the MX Marine MX420/8 CDU. Connects to Cable B ofthe MX420/8 CDU.

Pins 9 & 10: 1 PPS output

12


Data Interface to MX420/2 or MK12 CDU

Use the diagram below to interface the MX421-10 to a MX Marine MX420/2 or theMK12 CDU.

(2) Red

TerminalStrip

(User Supplied)

Red (+12 VDC)(16) Red/Wht(1) Shield Blk/Shield (GND)

Grn (GPS Out +)Org (GPS Out -)Brn (LPM In +)Blu (LPM In -)

(8) Org(9) Org/Wht(10) Yel(11) Yel/Blk

In (A)

In (A)

In (B)

In (B)

Out (A)

Out (A)

Out (B)

Out (B)

(4) Brn(5) Brn/Wht

NMEA2 Tx (RS-232)Ext. Alarm

(6) Prpl(7) Prpl/Wht(12) Grn(13) Grn/Wht(14) Blu(15) Blu/wht(17) Gry(18) Blk/Wht(3) Blk

12~32 VDCSupply

+ -

NMEA1 I/O

NMEA2 I/O

MX420/2 orMk12 CDU

MX421-10MX421B-10

Cab

leA

MX421-10 Interface to a MX420/2 and MK12 CDUs

13


Data Interface to MX420/8 or MX420/AIS CDU

Use the diagram below to interface the MX421B-10 to a MX Marine MX420/8 orMX420/AIS CDU.

(2) Red

(4) Brn White (Beacon Status Out +) Yellow (Beacon Status Out -)Purple (1 PPS +)Purple/Gray (1 PPS -)

(5) Brn/Wht(17) Gray(18) Gray/Blk

TerminalStrip

(User Supplied)

Red (+12 VDC)(16) Red/Wht(1) Shield Blk/Shield (GND)

Grn (GPS Out +)Org (GPS Out -)Brn (LPM In +)Blu (LPM In -)

(8) Org(9) Org/Wht(10) Yel(11) Yel/Blk

In (A)

In (A)

In (B)

In (B)

Out (A)

Out (A)

Out (B)

Out (B)

(4) Brn(5) Brn/Wht

NMEA2 Tx (RS-232)Ext. Alarm

(6) Prpl(7) Prpl/Wht(12) Grn(13) Grn/Wht(14) Blu(15) Blu/wht(17) Gry(18) Blk/Wht(3) Blk

12~32 VDCSupply

+ -

NMEA1 I/O

NMEA2 I/O

MX420/8/AIS

MX421-10MX421B-10

Cab

leA

Cab

leB

MX421-10 Interface to MX420/8 or MX420/AIS CDUs

14


Data Interface to MX500/510/512 CDUUse the diagram below to interface the MX421 to an MX500, MX510 or MX512CDU. Antenna cable assembly with two 10-Pin connectors are available in 3, 20and 40 meter lengths.

RED RED

BLK BLKBLU BLU

BRNBRN

ORG ORG

YEL YEL

PRPL PRPLGRY GRY

MX 5xx CDUMX421

GRN GRN

WHT WHT

P/N 3508 102 7015010-PIN CABLE ASSY.

(3 METERS)

MX 5xx CDUMX421

UPPER/LOWER

GRN

MX 500 JUNCTION BOX

NOTE: OTHER COMPONENTS AND CONNECTIONS IN THE MX 500 JUNCTION BOX ARE NOT SHOWN

AUX

ANT

PWR/DATA

MX5xx Antenna Interface to MX421

15


Data Interface to PC or Non-MX Marine Navigation SystemsFigure below shows the power and data input/output connections to a PC of othernon-MX Marine navigation systems using a terminal strip and DB9 connector (usersupplied items) to terminate the wires. This configuration can also be used foruploading the MX421-10 software.

Pin 6 (Green) GPS OUT

Pin 2 (Red) +12 VDC

2 AmpFuse

1 2 4 6

Data Out

Common GND To NavigationPC

Terminal Strip

Red

Gre

en

Bla

ck

123456789

DB9 Connector(Female)

Data In

Bro

wn

Blue

Pin 4 (Brown) LPM In (+)Pin 3 (Blue) LPM In (-)

Pin 1 (Black) GNDT

MX421 Interface to a PC chartplotter or Other Non-MX Marine NavigationSystems

16


SpecificationsGPS ReceiverType: L1, C/A Code (SPS), 12-channel

continuous Tracking.Frequency: 1575.42 MHz (L1 band)Receiver sensitivity: -143 dBm Costas thresholdUpdate rate: 1 Hz (5 Hz Optional)DGPS Input: RTCM SC-104 formatReceiver maximum input signal: -10 dBWSatellite measurement use: 12 channel parallel automatic selectionAntenna type: Ceramic PatchMaximum navigation dynamics:Maximum receiver dynamics: 2125 m.p.h. (950 m/s) 4G (39.2 m/s/s)Time to first fix:

Cold start (no almanac or other data): 120 sec. Typical, 150 sec 90% probable

Warm start (almanac, last fix-positionand time known) 48 sec (typical), 60 sec 90% probable

Reacquisition time: <40 sec. Blockage: 2 sec. (Typical)Position accuracy:

With differential corrections <1 meters 2D-RMS depending ondistance from differential base station.

Without differential corrections <3 meter 2D-RMS CEP (SA off)Input/Output interface: NMEA 0183 signal levels (optically

isolated input) at 4800 baud.Datum: WGS84Output messages: NMEA V3.0, GGA, GSA,

GSV, GST, RMC, VTG, GLL & GSB(MX Proprietary RAIM message)

Complies with CE emissions: CE EMC Standard EN50081-1EN50082-1

17


Beacon Receiver

(For MX421B model)Frequency: 283.5 to 325.0 kHz. 2-channel Auto or

Manual selection (500 Hz steps)Minimum Signal: 15 uV/mStation Selection: Automatic or Manual on two indepen-

dent receiver channelsDynamic Range: 90 dBAdjacent Channel Rejection: 40 dB (500 Hz)Channel spacing: 500 HzFrequency offset tolerance: + 5 HzAntenna type: H-FieldSensitivity: This is strongly influenced by the

atmospheric noise level. Typically alevel of 40 dBuV/m will provide ausable signal with a 10 dB signal tonoise ratio at 200 bps data rate. Invery quite locations and with a datarate of 100 bps, a level of 20 dbuV/mwill provide a usable signal.

Input/Output interface: NMEA 0183 signal levels (opticallyisolated input) at 4800 baud.

MSK rates: 100 and 200 (automatic or manualselection).

Physical Characteristics

Size: Height 3 1/2 in. (89 mm.)Diameter 7 1/8 in. (182 mm.)

Weigh: MX421 1.1 lbs. (500 gm. without cable)MX421B 1.9 lbs. (860 gm. without cable)

UV stable plastic radome, waterproofMount: 1”- 14 tpiSupply voltage range 10.5 to 32 VDCOperating current: MX421 Typically 200 mA at 12.0 VDC,

MX421B Typically 280 mA at 12.0 VDCOperating temperature range: -25 to +60 Degrees. C

18


3 ½

" (89

mm

)7 1/8” (182 mm)

1 in.- 14 TPI Mount

MX Marine reserves the right to make changes in its products and specificationswithout notice.

19


Data Output Protocol

The MX421 GPS and DGPS have been configured in the factory to output thefollowing NMEA data sentences:

GGA, DTM, GSA, GSV, GST, VTG, RMC, ZDANMEA 0183 Data Output Sentences

(1) GGA - Global Positioning System Fix DataTime, position and fix related data for a GPS receiver.

$GPGGA,hhmmss,llll.llll,a,yyyyy.yyyy,a,x,xx,x.x,x.x,M,x.x,M,x.x,xxxx*hh<CR><LF> 1 2 3 4 5 6 7 8 9 10 11 12 13 14Notes:1 ----- UTC of position2,3 --- Latitude - N/S4,5 --- Longitude - E/W6 ----- GPS Quality Indicator:

0=Fix not available or invalid1=GPS SPS Mode, fix valid2=Differential GPS, SPS Mode, fix valid3= GPS PPS Mode, fix valid

7 ----- Number of Satellites in use, 00-12, may be different from the number in view8 ----- Horizontal Dilution of Precision (HDOP)9 -----Antenna altitude/mean-sea-level (geoid)10-----Units of antenna altitude, Meters11,12-Geoidal Height, Meters13---- Age of Differential GPS Data14 ----Differential Reference Station ID

(2) GSA - GPS DOP and Active SatellitesGPS receiver operating mode, satellites used in the navigation solutionreported by the $GPGGA sentence, and DOP values.

$GPGSA,a,x,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,xx,x.x,x.x,x.x*hh<CR><LF> 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17Notes:1----- Mode: M = Manual, forced to operate in 2D or 3D Mode

A = Automatic, allowed to automatically switch 2D/3D

20


2 ------ Mode: 1 = Fix not available, 2 = 2D, 3 = 3D3-14 -- PRN numbers of satellites used in solution (null for unused fields)15 ---- PDOP16 ---- HDOP17 -----VDOP

(3) GSV - GPS Satellite in ViewNumber of satellites (SV) in view, PRN numbers, elevation, azimuth and SNRvalues. Four satellites maximum per transmission, additional satellite datasent in second or third message. Total number of messages beingtransmitted and the number of the message transmitted are indicated in thefirst two fields.

$GPGSV,x,x,xx,xx,xx,xxx,xx,....................,xx,xx,xxx,xx*hh<CR><LF> 1 2 3 4 5 6 7 8 9 10 11 12Notes:1 ------Total number of messages, 1 to 32 ----- Message number, 1 to 33 ----- Total number of satellites in view4 ----- Satellite PRN number5 ----- Elevation, degrees, 90 degrees maximum6 ------Azimuth, degrees True, 000 to 3597 ------SNR (C/No) 00-99 dB, null when not tracking8 ------2nd and 3rd SV9,10,11,12 - 4th SV

(4) RMC - Recommended Minimum Specific GPS DataTime, date, position, course and speed data provided by a GPS navigationreceiver. This sentence is transmitted at intervals not exceeding 2 secondsand is always accompanied by RMB when a destination waypoint is active.RMC and RMB are the recommended minimum data to be provided by aGPS receiver. All data fields must be provided: null fields used only whendata is temporarily unavailable.

$GPRMC,hhmmss.ss,A,llll.llll,a,yyyyy.yyyy,a,x.x,x.x,xxxxxx,x.x,a*hh<CR><LF> 1 2 3 4 5 6 7 8 9 10 11Notes:1 ---- UTC of Position fix2 ---- Status: A = data valid

V = Navigation receiver warning3,4 -- Latitude, N/S5,6 -- Longitude, E/W

21


7 ---- Speed over ground, knots8 ------ Course Over Ground, True9 ------ Date: dd/mm/yy10,11 - Magnetic variation, degrees E/W. Easterly variation (E) subtracts from True course, Westerly variation (W) adds to True course.

(6) GST - GNSS Pseudorange Error Statistics

This message is used to support Receiver Autonomous Integrity Monitoring (RAIM).Pseudorange measurement error statistics can be translated in the position domainin order to give statistical measures of the quality of the position solution.

If only GPS, GLONASS, etc. is used for the reported position solution, the talker IDis GP, GL, etc., and the error data pertains to the individual system. If satellitesfrom multiple systems are used to obtain the reported position solution, the talkerID is GN and the errors pertain to the combined solution.

$GPGST,hhmmss.ss,x.x,x.x,x.x,x.x,x.x,x.x,x.x*hh<CR><LF>1 2 3 4 5 6 7 8

Notes: 1 --------- UTC time of the GGA or GNS fix associated with this sentence.2 --------- RMS value of the standard deviation of the range inputs to the

navigation process. Range inputs include preudoranges & DGNSS corrections.

3 --------- Standard deviation of semi-major axis of error ellipse (meters)4 --------- Standard deviation of semi-minor axis of error ellipse (meters)5 --------- Orientation of semi-major axis of error ellipse (degrees from true

north)6 --------- Standard deviation of latitude error (meters)7 --------- Standard deviation of longitude error (meters)8 --------- Standard deviation of altitude error (meters)

(7) VTG - Course Over Ground and Ground Speed

The actual course and speed relative to the ground.

$GPVTG,x.x,T,x.x,M,x.x,N,x.x,K,a*hh<CR><LF> 1 2 3 4 5 6 7 8 9

Notes: 1,2 ------ Course over ground, degrees True2,3 ------ Course over ground, degrees Magnetic5,6 ------ Speed over ground, knots7,8 ------ Speed over ground, km/hr9 --------- Mode indicator: A = Autonomous mode

D = Differential mode

22


How Are We Doing?

Please Help Us To Help You And Our Other

Valued Customers By

sending us your evaluation of this manual. We need to know such things as:

• is the manual complete, or do you need more (or less) information?• can you find the information you need easily?• is the information easy to understand, or could we be clearer?• are there any errors and, if so, where and what are they?

Be sure to reference the title and identification number of this manual:

Installation Manual

P/N 723594

and include your name, address and telephone number. We look forward to findingout how we can improve our information services.

All of your comments and suggestions become the property of MX Marine.

Please send them to:MX Marine

A Division of NAVICO, Inc.23868 Hawthorne Blvd., Suite 201

Torrance, CA 90505United States of America

or write your comments on the Reader Comment Sheet on the next page and mailit to us.

23


24


Reader Comment SheetInstallation Manual P/N 723594

MX Marine welcomes your evaluation of this manual. Please note errors, suggestadditions, or make general comments below. Use extra pages if you like. All com-ments and suggestions become the property of MX Marine.

Do not use this form to request purchases, maintenance assistance, or additionalpublications. Please contact your MX Marine marketing representative for purchasesor additional publications, and your nearest authorized service representative formaintenance assistance.Thank you._____________________________________________________________________

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Fold on broken line as shown on other side of page and seal with tape.

25


PlaceStamp

Here

MX MarineA Division of NAVICO, Inc.

23868 Hawthorne Blvd., Suite 201Torrance, CA 90505-5908

USA

------------------------------------------------------------------------------

26

Warranty

PRODUCT WARRANTY AND LIMITATION OF LIABILITYThis product is warranteed by MX Marine (the “Seller”) to original purchaser (the “buyer”)for use only to be free of all defects in material and workmanship for a period of twelve(12) months from date of purchase by Buyer.

If during the warranty period, this product or parts thereof (“Product”) are found to bedefective in material or workmanship, Seller shall repair or replace the defective Product,at the discretion of the Seller.

In order to claim this warranty service, Buyer shall return the defective Product, togetherwith proof of purchase to Seller or its authorized service representative and pay all trans-portation charges, duties, and taxes associated with the return of the Product to Seller.Seller shall reimburse Buyer for costs of the return to Buyer of Product found to bedefective and covered by this warranty. Product which is repaired or replaced under thewarranty is covered by this warranty for the remainder of the original warranty period or fora period of ninety (90) days after return shipment to Buyer, whichever is longer.

SELLER’S MAXIMUM LIABILITY ARISING FROM USE OF SELLER’S PRODUCT SHALLNOT EXCEED AND BUYER’S REMEDY IS LIMITED IN ANY EVENT TO REPAIR OR RE-PLACEMENT AND REIMBURSEMENT FOR COSTS ASSOCIATED WITH THE RETURNOF THE DEFECTIVE PRODUCT AS PROVIDED HEREIN; AND SUCH REMEDY SHALLBE THE BUYER’S ENTIRE AND EXCLUSIVE REMEDY.

This warranty does not apply to failure of any equipment not sold to Buyer by Seller, or toany Product which has been subjected to misuse, lightning, an accident, or improperinstallation, maintenance or application, nor does it extend to any Product which hasbeen repaired or altered by anybody other than the Seller or its authorized service repre-sentative, unless such repair or alteration was authorized in writing by Seller. Thiswarranty also does not apply to batteries and losses or damage due to the batteries.Since the GPS system on which the Product operates is furnished by the U.S.. Govern-ment, not Seller, the Seller shall not be responsible for the GPS system or changes in theGPS System availability, coverage or accuracy.

THIS PRINTED LIMITED WARRANTY IS ACCEPTED BY BUYER IN LIEU OF ANY OTHERWARRANTY FOR THE PRODUCT, WHETHER EXPRESSED OR IMPLIED, INCLUDING,WITHOUT LIMITATION, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESSFOR A PARTICULAR PURPOSE.

IN NO EVENT SHALL SELLER BE LIABLE FOR INCIDENTAL OR CONSEQUENTIALDAMAGES OF ANY KIND OR NATURE, INCLUDING, BUT NOT LIMITED TO LOSS OFPROFIT OR REVENUE, COMMERCIAL LOSS, DAMAGE TO OR LOSS OF PROPERTY,ARISING FROM OR RELATED TO THE USE OF THE PRODUCT.

THIS PRODUCT IS AN AID TO NAVIGATION ONLY. UNDER NO CIRCUMSTANCESSHOULD IT BE USED IN LIEU OF AUTHORIZED GOVERNMENT CHARTS. ITS ACCU-RACY CAN BE AFFECTED BY MANY FACTORS SUCH AS EQUIPMENT DEFECTS, ENVI-RONMENTAL CONDITIONS, OR IMPROPER OPERATION. THE USER IS RESPON-SIBLE FOR SAFE NAVIGATION OF THE VESSEL. THIS INCLUDES CONSULTING AU-THORIZED GOVERNMENT CHARTS AND EXERCISING COMMON PRUDENCE ANDNAVIGATIONAL JUDGEMENT AT ALL TIMES.

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Warranty

A Division of NAVICO, Inc.23868 Hawthorne Blvd., Suite 201

Torrance, CA 90505USA

Phone +1 310 791 8213Fax +1 310 791 6108

www.mx-marine.com

Documents

MX421 High Precision GPS Sensor Installation Manual · Smart Antenna Sensors INSTALLATION MANUAL ... 1 MX421 Installation Manual ... solution error exceeds 100 meters,