Simrad MX575A, MX575B Installation Manual
MX575A
MX575B
D/GPS Compass
Installation Manual
Manual
Simrad
MX575A
MX575B
D/GPS Compass
English
Document no:3508-102-70920
Revision: C
Date: August 2010
The original language for this document is English.
In the event of any discrepancy between translated
versions and the English version of this document,
the English document will be the official version.
To the best of our knowledge, the content in this
publication was correct at the time of printing.
As we are continously improving our products we
retain the right to make changes to the product and
the documentation at any time. Updated manuals
are available from our website www.simradyachting.com and are free to download.
Copyright 2010 by Navico Holdings AS.
IMPORTANT NOTICE!!
THE MX575A/B D/GPS COMPASS IS AN AID TO NAVIGATION ONLY.
UNDER NO CIRCUMSTANCES SHOULD IT BE USED IN LIEU OF AUTHORIZED GOVERNMENT CHARTS. ITS ACCURACY CAN BE AFFECTED
BY MANY FACTORS SUCH AS EQUIPMENT DEFECTS, ENVIRONMENTAL CONDITIONS, OR IMPROPER OPERATION. THE USER IS RESPONSIBLE FOR SAFE NAVIGATION OF THE VESSEL. THIS INCLUDES
CONSULTING AUTHORIZED GOVERNMENT CHARTSAND EXERCISING
COMMON PRUDENCE AND NAVIGATIONAL JUDGEMENT AT ALL TIMES.
How To Contact Us?
Contact your local Simrad dealer for:
• Installation, Service, & Technical Support
• Sales of Accessories
• Hardware and Software Upgrades
Unlike many other consumer electronics industries which only sell consumer
electronic devices, your marine dealer is often your best advisor for installation
and service of your new GPS receiver. Simrad strongly encourages you to
utilize the knowledge and experience of your sales and service dealer.
Should you need to contact us directly for new sales, upgrades, repair service, or technical support, we can be reached at the following:
International:
MX Marine (USA)
A Division of NAVICO, Inc.
23868 Hawthorne Blvd., Suite 201
Torrance, California 90505
USA
+1 310 791 8213 (Telephone)
+1 310 791 6108 (Fax)
www.mx-marine.com
In Europe:
NAVICO UK Ltd
Premier Way, Abbey Park
Romsey, Hampshire
S051 9DH
United Kingdom
+44 (0)1794 510010 (Telephone)
+44 (0)1794 510006 (Fax)
www.navico.com
ii
Contents
1. General ............................................................................................ 1
1.1 MX575 D/GPS Beacon Operation .................................................. 2
1.2 Satellite Based Augmentation System (SBAS) ............................... 2
1.3 Receiver Autonomous Integrity Monitoring (RAIM) ..................... 2
1.4 Understanding the MX575 D/GPS Satellite Compass .................... 3
1.5 Supplied Equipment ........................................................................ 4
2. MX575 Mounting ............................................................................ 5
2.1 MX575 Mounting Guidelines ......................................................... 6
2.2 Installation Procedure ...................................................................... 7
2.2.1 Mounting ................................................................................. 7
2.2.2 Fixed Base Mounting .............................................................. 8
2.2.3 Pole and Rail Mounting ........................................................ 13
2.3 Connecting to a Power Source ...................................................... 23
3. MX575 Operation ......................................................................... 24
3.1 MX575 Antenna Cable ................................................................. 24
3.2 Standard Data Interface to the CDU ............................................. 25
3.3 Alternative Data Interface ............................................................. 31
3.4 Data Interface to PC or Other Navigation Systems ...................... 34
4. MX575 Configuration ................................................................... 35
4.1 Configuring the MX575 as a GPS Satellite Compass ................... 37
4.2 The NAV 5 & NAV 6 Compass Display Screens ......................... 39
5. MX575 Specifications ................................................................... 40
6. Data Output ................................................................................... 44
6.1 Proprietary Input Data Messages .................................................. 51
PRODUCT WARRANTY AND LIMITATION OF LIABILITY ........ 65
MX575A/B DGPS Compass
iii
Figure 1 – MX575 Mounting Orientations.................................................... 5
Figure 2– MX575 antenna location relative to other antennas ..................... 6
Figure 3 - MX575 with Fixed-Mount base ................................................... 7
Figure 4 - MX575 with Pole-Mount base ..................................................... 8
Figure 5– Fixed-Mount base ......................................................................... 9
Figure 6 - Bottom view of Fixed-Mount base ............................................... 9
Figure 7- Running cable through the fixed base mount .............................. 10
Figure 8- Running cable through the fixed base ......................................... 10
Figure 9- Power/Data cable key and keyway .............................................. 11
Figure 10- Connecting the Power/Data cable to the MX575 ...................... 11
Figure 11- Fastening the fixed-base to the MX575 ..................................... 12
Figure 12- Fastening the fixed-base to the MX575 ..................................... 12
Figure 13- Threading on the lock nut and washer ....................................... 14
Figure 14 - Running the cable through the pole base .................................. 15
Figure 15- Running the cable through the pole base ................................... 15
Figure 16 - Running the Cable through the Pole Mount ............................. 16
Figure 17 - Completed cable run ................................................................. 16
Figure 18 - Threading the Pole-Base onto the mount ................................. 17
Figure 19 – Pole-Base threaded onto mount ............................................... 17
Figure 20 - Power / Data cable key and keyway ......................................... 18
Figure 21 - Connected Power / Data cable .................................................. 19
Figure 22 - Fastening the Pole Base to the MX575 .................................... 20
Figure 23 - Threading the lock nut against the pole base ............................ 20
Figure 24- Locking the MX575 once aligned ............................................. 21
Figure 25 - Lining up the alignment sight ................................................... 22
Figure 26 - Correctly Lined-up alignment sight .......................................... 22
Figure 27 –Standard connection to MX420 (Port 3) through Cable A ....... 26
Figure 28– Standard connection to MX420/2 (Port 3) through the junction
box ............................................................................................................... 27
Figure 29–Standard connection to the MX420/8 (Port 3) through ............. 28
Figure 30 – Standard connection to MX500/MX510/MX512 ANT port
connection using a 3-meter antenna cable assembly ................................... 29
MX575A/B DGPS Compass
iv
Figure 31 – Standard connection to the MX500/MX510 Antenna port
through the MX5XX junction box .............................................................. 29
Figure 32 – MX575 connection to the MX512 Antenna port through the
MX512 Junction Box .................................................................................. 30
Figure 33 – Alternative connection to MX420/2 CDU (PORT 2) as a GPS
Satellite Compass only ................................................................................ 31
Figure 34- MX575 Interface to MX420/8 CDU (PORT 2) as a GPS Satellite
Compass only .............................................................................................. 32
Figure 35 - MX575 Interface to MX5xx CDU (PORT 1) as a GPS Satellite
Compass only .............................................................................................. 33
Figure 36- RS-232 serial interface to PC or other navigation systems ....... 34
Figure 37 – ROT Setup with MX420 CDU ................................................ 36
Figure 38 – Compass Setup with MX420 CDU .......................................... 38
Figure 39 – ROT Setup with MX420 CDU ................................................ 38
Figure 40 – NAV 5 Compass Display Screen ............................................. 39
Figure 41 – NAV 6 Compass Display Screen ............................................. 39
MX575A/B DGPS Compass
1
1. General
This manual describes the installation and operation of the MX575A & MX575B
D/GPS Satellite Compass. They share common functionality and installation thus
they will be generally called MX575. The specific model number will be called
upon to describe a unique functionality.
The MX575 is designed to work interactively with the MX-Marine Control and
Display Unit (MX420 and MX5xx series) or as a stand-alone positioning and
heading device connected to a PC running ECDIS or other navigation software.
When connected to an MX CDU (i.e. MX420 or MX5xx), it can be controlled to
function in several modes, namely;
• GPS positioning only
• Auto or manual DGPS mode using the Coast Guard beacon stations
• WAAS (Wide Area Augmentation System-US system)*
• EGNOS (European Geostationary Overlay System)*
• RAIM (Receiver Autonomous Integrity Monitoring)**
The MX575 is designed to be used as:
• source of GPS positioning and heading information for IMO compliant GPS
and AIS installation
• source of positioning for IMO compliant ECDIS and other charting software
• a backup heading source in the event that the primary gyro is not available
Before installing the MX575 D/GPS Satellite Compass, please read this manual
carefully to ensure proper installation and operation of the unit.
* Not IMO approved GPS Augmentation Systems
** Available only when the MX575 is connected to an MX CDU
MX575A/B DGPS Compass
2
1.1 MX575 D/GPS Beacon Operation
The MX575 D/GPS Satellite Compass is an integrated GPS and beacon receiver
unit that is fully automatic and usually does not require user intervention in most
cases. It will automatically search for available GPS satellites and beacon
differential stations as soon as power is applied.
The internal 2-channel beacon receiver performs a database search for beacon
stations that cover its present position. The first channel tracks the nearest
beacon station frequency while the second channel searches for and collects
beacon almanac data for other available beacons stations. Should it find another
station that is closer, it will automatically switch the primary channel to the new
station.
The MX575 D/GPS automatically selects the closest beacon station or can be
controlled through the MX420 CDU to manually select a specific beacon
frequency.
1.2 Satellite Based Augmentation System (SBAS)
When SBAS is available, the MX575 can be controlled (using the CDU) to track
the Satellite Based Augmentation Systems (SBAS) like the WAAS (US), EGNOS
(European) and MSAS (Japan) satellites. These geostationary satellites transmit
DGPS correction data (just like the Coast Guard beacon stations) using the GPS
frequency.
1.3 Receiver Autonomous Integrity Monitoring (RAIM)
RAIM is a software algorithm in the MX575 program that monitors the GPS system
error constantly. When the GPS system error exceeds a predetermined value (100
meters), the RAIM feature sends an alarm code to the MX CDU to sound a RAIM
unsafe alarm. This feature requires at least five or more GPS satellites to operate
properly. If the position solution error exceeds a preset limit a “RAIM Unsafe (R-)”
or “RAIM Caution (R?)” alarm will be indicated in the MX CDU. This means that the
accuracy of the position cannot be guaranteed at that point in time. The operator is
advised to use the GPS position with caution until the RAIM indicator switches to
(R+) denoting safe RAIM condition. Position errors may be caused by unhealthy
MX575A/B DGPS Compass
3
satellites, incorrect pseudoranges, poor GPS satellite geometry, excessive
atmospheric interference and problems at particular reference stations.
The RAIM messages will only become available when it is connected to the MX
CDU
1.4 Understanding the MX575 D/GPS Satellite Compass
The MX575 is a complete GPS heading and positioning system in a single
enclosure that requires only one power/data cable connection. It has been
designed primarily for the Marine market applications. This manual has been
written to address the primary uses of the MX575 in the Marine industry.
The MX575 houses two tightly coupled high-performance GPS receivers, dual
GPS antennas, a DGPS beacon receiver module, power supply circuit, a singleaxis rate gyro, a tilt sensor, and H-field internal beacon antenna. The rate gyro
and tilt sensors are used to improve system performance and to provide backup
heading information in the event that the primary GPS heading solution is not
available due to GPS signal blockages.
MX575A/B DGPS Compass
4
1.5 Supplied Equipment
The following items are supplied with the MX575 Kit:
Description Part Number
MX575 A or B DGPS Compass
Comprising:
MX575A D/GPS Compass 3508 102 70900
(or)
MX575B D/GPS Compass 000-10280-001-
Sensor
Accessories:
15m Power/data Cable 3508 102 70910
(VNDR# 051-6157-002)
MX575 Manual 3508 102 70920
Pole mount 3508 102 70730
Fixed Mount 3508 102 70740
Mounting Kit 3508 102 70750
8 base mount screws
2 Torx screw bits
1 1-in-14TPI stainless steel jam nut
1 stainless steel washer
Table 1 - MX575 Kit
MX575A/B DGPS Compass
5
2. MX575 Mounting
The preferred orientation for the MX575 D/GPS Satellite Compass is parallel to
the axis of the vessel. In other words, it should be pointing towards the bow of the
boat. This mounting configuration will provide the ability for the MX575 to output
the positioning, heading and pitch of the vessel.
Mounting it perpendicular to the axis of the vessel is also acceptable and will allow
calculation of the roll of the vessel. The MX CDU has an offset option to
compensate for orientation errors.
Figure 1 – MX575 Mounting Orientations
If a gyro compass is available, this could be used as reference to calibrate the
physical heading of the MX575 and its corresponding heading measurements to
true heading of the boat by entering a heading offset (refer to pages 34-37 of this
manual). For example, if a gyro compass heading provides 183.2° while the
MX575 provides a heading reading of 184.0°, a bias of -0.8° (the bias is added)
MX575A/B DGPS Compass
6
should be programmed into the MX575 to calibrate its heading. Obviously, the
physical orientation of the MX575 could be adjusted to correct for this deviation.
2.1
MX575 Mounting Guidelines
• Install the MX575 where it has a clear view of the sky around it.
• Locate the MX575 for easy access and maintenance.
• Stay away from high-power energy sources such as radar, SSB, INMARSAT
and other transmitting radio antennas by 5 meters or more.
• Locate the MX575 at least 10 meters away from and out of the transmitting
beam of radar and other high-power transmitters.
• Mount the MX575 low to avoid excessive position and speed errors while
underway.
• Mount the MX575 as far away as possible from large metal structures.
Note: If you are not sure if the chosen location is appropriate, you can mount the MX575
temporarily and operate it with the MX420 CDU. Monitor the operation of the MX575 while you
turn on other on-board electronic equipment. Move the MX575 around until the MX575 operates
satisfactorily then mount it permanently.
1 M.
3 M.
INMARSAT
ANT.
RADAR ANT.
Mx575
VHF OR MF
ANT.
MAIN
MAST
MOUNT THE MX575 D/GPS Com pass
10 M. (Min) FORWARD OF MAIN MAST
1
0
M
e
t
e
r
(
m
i
n
.
)
10 M.
10 M
(
m
i
n
)
Mx521
Figure 2– MX575 antenna location relative to other antennas
MX575A/B DGPS Compass
7
2.2 Installation Procedure
2.2.1 Mounting
The MX575 may be mounted with either the fixed-base or pole-mounting base.
Both mounts are supplied with the system.
The fixed base allows you to mount the MX575 on horizontal flat surfaces, such as
radar platforms. The pole mount is designed for use with 1”-14TPI threaded
mounts, such as pole and rail mounts.
Note: Installations that use the pole mount require the use of the supplied hexagonal jam nut
and flat washer in order to mechanically couple the MX575 system to the pole mount with less
stress on the threads. If the nut/washer combination is not used, failure of the pole mounting
base could occur, which may damage the MX575. Any such damage to the MX575 system
resulting from not using the nut / washer combination is not covered under warranty.
The following figure shows the MX575 mounted with the fixed base.
Figure 3 - MX575 with Fixed-Mount base
MX575A/B DGPS Compass
8
The following figure shows the MX575 with the pole mount
.
Figure 4 - MX575 with Pole-Mount base
2.2.2 Fixed Base Mounting
The supplied fixed base is intended to allow you to mount the system on a flat
surface. This surface may be something that you fabricate for the sake of the
installation, or may be something that already exists on your vessel or an off-theshelf item, such as a radar mounting plate.
The fixed base has the following features:
• 6 holes for mounting onto the MX575 enclosure
• A channel through the mount for the power/data cable.
• Two small keys to aid the alignment of the base to the enclosure.
• Four slots used for fastening the mounted enclosure to the vessel.
• Four tunnels that allow you to route the cable outside the base and along the
mounting surface.
The slots on the bottom of the base allow for a degree of adjustment when the
MX575 is secured in its final location.
Note: You do not necessarily need to orient the MX575 precisely as you can enter a heading
offset to accommodate for any bias in heading measurement due to installation.
MX575A/B DGPS Compass
9
The base also features four tunnels that allow you to bring the power/data cable
out from within the mount in order to route it along the surface of the plate beneath
the MX575 system. Alternatively, you may wish to route the power/data cable
through the mounting surface rather than bringing it out through one of the
tunnels.
Figure 5– Fixed-Mount base
Figure 6 - Bottom view of Fixed-Mount base
MX575A/B DGPS Compass
10
To install the MX575 using the fixed base, insert either end of the power/data
cable through the center of the fixed base as shown in the following two figures.
Figure 7- Running cable through the fixed base mount
Figure 8- Running cable through the fixed base
MX575A/B DGPS Compass
11
Align the connector keyway of the cable to the key of the connector mounted on
the MX575 enclosure as show in Figure 8. Insert the cable-mount connector into
the bulkhead connector, aligning the locking ring at the same time.
Figure 9- Power/Data cable key and keyway
Once inserted, rotate the ring clockwise until it locks. The locking action is firm,
but you will feel a positive ‘click’ when it has locked, as shown in the following
figure.
Figure 10- Connecting the Power/Data cable to the MX575
MX575A/B DGPS Compass
12
Once you have secured the connector, slide the fixed base up to the bottom of the
MX575 enclosure. There are two alignment keys on top of the base that must fit
into two holes of the enclosure. Once you have aligned the base, use a
screwdriver fitted with the supplied Torx T20 bit to fasten the base to the enclosure
using the supplied self-tapping screws. Fasten the screws firmly, but be careful
not to strip the thread.
The following two figures show the location of the screw holes.
Figure 11- Fastening the fixed-base to the MX575
Figure 12- Fastening the fixed-base to the MX575
MX575A/B DGPS Compass
13
Once you have fastened the fixed-base to the MX575 enclosure using six
mounting screws, you are ready to fasten the assembly to your mounting surface.
We recommend that you use machine screws that have an Allen Key head
(hexagonal) and an “L-shaped” Allen Key, as there may not be sufficient clearance
between the bottom of the antenna and your mounting surface to use a normal
screwdriver.
Note: As we do not supply the mounting surface, you will need to supply the appropriate
fastening hardware required to complete the installation of the MX575 and mount assembly.
2.2.3 Pole and Rail Mounting
The pole mount incorporates a 1inch-14TPI thread. To aid in the installation of the
MX575, we supplied a hex jam nut and washer. These are used to secure the
antenna in a particular direction without bottoming out the system on the threaded
pole. Additionally, the nut and washer distributes forces associated with vibration
onto the bottom surface of the MX575 pole mount.
Caution: Do not bottom out the MX575 pole base on the threaded mount. Such manner can
damage the system. Use of the jam nut and washer are mandatory for pole mounting. Any
damage resulting from not using these pieces to mount the MX575 will not be covered under
warranty.
You will need to supply the pole or rail mount hardware that you wish to use.
Once you have installed the pole or rail mount, thread the hexagonal jam nut onto
to the mount, followed by the stainless steel washer, both supplied with the MX575
system. Thread the nut onto the mount approximately 8 to 10 full turns to provide
adequate mounting thread for the pole mount base. The following figure illustrates
this step.
MX575A/B DGPS Compass
14
Figure 13- Threading on the lock nut and washer
When mounting the MX575 using the pole mount, the cable must be run first
through the center of the pole mount base (from top to bottom), through the pole,
and then through any bulkheads as needed (the power/data connector is too large
to fit through the threaded portion of the pole mount base).
Note: Be sure to have some slack to move the cable in and out of the pole mount by a few
inches. This will allow you to connect the cable to the MX575 easily.
MX575A/B DGPS Compass
15
The following three figures detail the process of routing the cable.
Figure 14 - Running the cable through the pole base
Figure 15- Running the cable through the pole base
MX575A/B DGPS Compass
16
Figure 16 - Running the Cable through the Pole Mount
Once you have routed the cable correctly through the pole mount base and the
mounting pole, the mounting assembly should look like the following figures.
Figure 17 - Completed cable run
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