C-Nav7000 User Guide

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C-Nav7000 User Guide

Revision 1

C-Nav7000 User Guide

Revision 1

Revision Date: January 31, 2014

C & C Technologies, Inc.

C-Nav Solutions

730 E. Kaliste Saloom Road

Lafayette, LA 70508 U.S.A. www.cnav.com

Page 1 of 33 3/6/2014

C-Nav7000 User Guide

Release Notice

This is the January 2014 release of the C-Nav7000 User Guide (Part Number

CNV7000MANUAL).

Revision History

1 1/31/2014 Initial Review J. Hauschildt

Description Author Revision Date

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C-Nav7000 User Guide

Trademarks

The C-Nav logo is a trademark of C & C Technologies, Inc.

C-Nav, C-Nav3050 and C-Nav7000 are trademarks of C & C Technologies, Inc.

Microsoft, MS-DOS, Windows, Windows NT, Windows XP, Windows Vista, and

Windows 7 are trademarks of Microsoft Corporation. All other brand names are trademarks of their respective holders.

FCC Notice

This device complies with Part 15 Subpart B Class B of the FCC Rules.

Operation is subject to the following two conditions:

1. This device may not cause harmful interference, and

2. This device must accept any interference received, including interference that may cause undesired operation.

The GNSS sensor has been tested in accordance with FCC regulations for electromagnetic interference. This does not guarantee non-interference with other equipment. Additionally, the GNSS sensor may be adversely affected by nearby sources of electromagnetic radiation.

Disclaimer of Warranty

EXCEPT AS INDICATED IN “LIMITED WARRANTY” HEREIN, C & C

TECHNOLOGIES, SOFTWARE, FIRMWARE AND DOCUMENTATION ARE

PROVIDED “AS IS” AND WITHOUT EXPRESSED OR LIMITED WARRANTY

OF ANY KIND BY EITHER C & C TECHNOLOGIES, INC., OR ANYONE WHO

HAS BEEN INVOLVED IN ITS CREATION, PRODUCTION, OR DISTRIBUTION

INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF

MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE

ENTIRE RISK, AS TO THE QUALITY AND PERFORMANCE OF THE C & C

TECHNOLOGIES HARDWARE, SOFTWARE, FIRMWARE AND

DOCUMENTATION, IS WITH YOU. SOME STATES DO NOT ALLOW THE

EXCLUSION OF IMPLIED WARRANTIES, SO THE ABOVE EXCLUSION MAY

NOT APPLY TO YOU.

Limitation of Liability

IN NO EVENT WILL C & C TECHNOLOGIES, INC., OR ANY PERSON

INVOLVED IN THE CREATION, PRODUCTION, OR DISTRIBUTION OF THE C

& C TECHNOLOGIES SOFTWARE, HARDWARE, FIRMWARE AND

DOCUMENTATION BE LIABLE TO YOU ON ACCOUNT OF ANY CLAIM FOR

ANY DAMAGES, INCLUDING ANY LOST PROFITS, LOST SAVINGS, OR

OTHER SPECIAL, INCIDENTAL, CONSEQUENTIAL, OR EXEMPLARY

DAMAGES, INCLUDING BUT NOT LIMITED TO ANY DAMAGES ASSESSED

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C-Nav7000 User Guide

AGAINST OR PAID BY YOU TO ANY THIRD PARTY, RISING OUT OF THE

USE, LIABILITY TO USE, QUALITY OR PERFORMANCE OF SUCH C & C

TECHNOLOGIES’ SOFTWARE, HARDWARE, AND DOCUMENTATION, EVEN

IF C & C TECHNOLOGIES, INC., OR ANY SUCH PERSON OR ENTITY HAS

BEEN ADVISED OF THE POSSIBILITY OF DAMAGES, OR FOR ANY CLAIM

BY ANY OTHER PARTY. SOME STATES DO NOT ALLOW THE LIMITATION

OR EXCLUSION OF LIABILITY FOR INCIDENTAL OR CONSEQUENTIAL

DAMAGES SO, THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU.

Use of this Document

This User Guide is intended to be used by someone familiar with the concepts of

GNSS Sensor hardware installation and rack mounted equipment in a marine environment. Revisions to this User Guide can be obtained on our website www.cnav.com

or by contacting C-Nav Support: [email protected]

.

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C-Nav7000 User Guide

Table of Contents

Table of Contents .................................................................................................. 5

List of Figures ....................................................................................................... 6

List of Tables ........................................................................................................ 6

Manual Organization ......................................................................................... 7

Conventions ...................................................................................................... 7

Section 1 - Overview ............................................................................................. 9

Introduction ....................................................................................................... 9

Supplied Equipment ........................................................................................ 10

Optional Equipment ......................................................................................... 11

Section 2 – Principles of Operation ..................................................................... 12

UHF Radio Modules ........................................................................................ 12

Frequency Controller ....................................................................................... 13

IALA Radio Module ......................................................................................... 13

Fallback Switch ............................................................................................... 13

Dual Outputs ................................................................................................... 13

Power Supply .................................................................................................. 13

Controls and Indicators ................................................................................... 14

C-Nav3050 ...................................................................................................... 14

Section 3

– Specifications ................................................................................... 15

UHF Modules .................................................................................................. 15

Power Requirements ................................................................................... 15

Radio Specifications .................................................................................... 15

Type Certification ......................................................................................... 15

Link Rate / Modulation ................................................................................. 15

IALA Beacon Receiver .................................................................................... 15

Radio ........................................................................................................... 15

C-Nav7000 ...................................................................................................... 16

Section 4

–Installation ......................................................................................... 17

Rack Installation .............................................................................................. 17

Installation of Antennas ................................................................................... 18

Determining Proper Antenna Placement ......................................................... 19

Considerations for GNSS Antenna placement include ................................ 19

Antenna Installation ......................................................................................... 20

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C-Nav7000 User Guide

Coaxial Cable Installation ................................................................................ 21

Interconnection Diagram ................................................................................. 22

Interfacing with Vessel Dynamic Positioning System ...................................... 23

Section 5 - Operation .......................................................................................... 24

Appendix A - Petrobras UHF Channels with Frequencies .................................. 27

Appendix B - ADL RXO UHF Programming Procedures ..................................... 28

Appendix C - IALA Module .................................................................................. 32

List of Figures

Figure 1: C-Nav7000 ............................................................................................. 9

Figure 2: C-Nav7000 Block Diagram .................................................................. 12

Figure 3: C-Nav7000 Rear Panel ........................................................................ 17

Figure 4: Supplied Antennas ............................................................................... 18

Figure 5: C-Nav3050 Antenna Mast Installation ................................................. 20

Figure 6: C-Nav7000 Interconnection Diagram ................................................... 22

Figure 7: C-Nav7000 Front Panel ....................................................................... 24

Figure 8: Receiving Data .................................................................................... 25

Figure 9: Not Receiving Data .............................................................................. 25

Figure 10: Connect to ADL Radio Window ......................................................... 28

Figure 11: Frequency Configuration Window ...................................................... 29

Figure 12: Action Overwrite Window ................................................................... 30

Figure 13: Reading Configuration Window ......................................................... 30

Figure 14: Successful Radio Configuration ......................................................... 31

List of Tables

Table 1: C-Nav7000 (P/N CNVDGNSS-SYSTEM-2) Supplied Equipment ......... 10

Table 2: CNV7000-IALA-OPT IALA OPTION ..................................................... 11

Table 3: CNV7000-UHF-OPT UHF OPTION #1 ................................................. 11

Table 4: CNV7000-UHF-OPT UHF OPTION #2 ................................................. 11

Table 5: CNV7000PS-OPT C-Nav7000 Power Supply Option Kit ...................... 11

Table 6: Petrobras DGNSS UHF Channels and Frequencies ............................. 27

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C-Nav7000 User Guide

Manual Organization

This section describes how the manual is laid out. It gives one or two sentence descriptions about each major section.

Section 1 - Overview (Page 9 ) gives a brief overview of the purpose of this

document.

Section 2 – Principles of Operation (Page 12 ) provides guidance on how the

C-Nav7000 works.

Section 3 – Specifications (Page 15 ) gives technical specifications for the

C-Nav7000.

Section 4

–Installation

(Page 17 ) gives the installation guidelines for the

C-Nav7000.

Section 5 - Operation

(Page 24 ) provides guidance on operating the C-Nav7000.

Appendix A - Petrobras UHF Channels with Frequencies (Page 27 ) provides the

list of channels and frequencies used in Annex V.

Appendix B - ADL RXO UHF Programming Procedures (Page 28 ) provides

instructions to the user on how to program an ADL RXO UHF module.

Appendix C - IALA Module (Page 32 ) provides information on the IALA module.

Conventions

Arial font is used for plain text in this document.

Arial italic font is used for settings names.

“Arial quoted” font is used for settings values.

Arial Bold font is used for button names.

Arial Bold Italic font is used for menu items.

Arial Blue font is used for cross-references.

Arial Blue Underline font is used for hyperlinks.

Arial red italic is used for typed commands.

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C-Nav7000 User Guide

This symbol is used for warnings in which failure to take heed may cause severe injury or death.

This symbol is used to caution the user that the improper installation and use of this product may damage this product and/or other devices connected to it.

Important notes are displayed in shaded text boxes

Please note:

Such note boxes display important information that should not be ignored.

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C-Nav7000 User Guide

Section 1 - Overview

Introduction

The C-Nav7000 consists of a C-Nav3050 receiver and IALA/UHF sub-system mounted inside a 2U high 19” rack mount case. The complete assembly is designed to meet Petrobras Annex V requirements.

Annex V requires that RTCM104 correctors from several sources be interfaced to the GNSS receiver. Since the receiver has only a single RTCM104 input this selection must be done externally.

There are two sources of RTCM104 corrections available, one is from a system of UHF transmitters located on offshore platforms and the other is from shore located IALA beacon transmitters. In some locations, more than one UHF station can be received. It is also required to be able to switch from one UHF source to another. If available these in-field derived UHF corrections will always take priority over the less accurate IALA corrections.

Table 1 shows a list of supplied equipment for the C-Nav7000. Tables 2 through

4 show a list of optional equipment. The optional equipment will have already been installed by qualified C-Nav technicians.

Figure 1: C-Nav7000

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C-Nav7000 User Guide

Supplied Equipment

1

2

3

4

5

6

7

8

9

10

11

C-Nav3050 GNSS Sensor

(P/N CNV92-310413-3002LF)

C-Nav3050 Y-cable, 9-Pin to RJ45 & DB9

(P/N NAV94-310272-3006LFB)

C-Nav3050 Y-Cable, 9-Pin to USB & DB9S

(P/N NAV94-310273-3006LF)

C-Nav3050 Power & 1PPS Cable w/filter

(P/N NAV94-310274-3010LF)

USB Thumb Drive

(P/N 7CNG002-0)

C-Nav GNSS Antenna

(P/N NAV82-001020-3001LF)

12" Antenna Pole

(P/N WES534610)

Antenna Mounting Adaptor

(P/N 3250005-0)

C-Nav3050 Quick Start Guide

(P/N CNV96-310033-3001)

Product DVD

(P/N 6000001-XX)

C-Nav7000 Base Unit

(P/N CNV7000)

12

13

C-Nav7000 Quick Start Guide

(P/N CNV7000-QS)

C-Nav7000 User Guide

(P/N CNV7000MANUAL)

14

DC Power Supply Cable

(P/N CNVPSC001-1)

15 6' Standard Serial Cable

(P/N QVSCC317-06) (3ea.)

Table 1: C-Nav7000 (P/N CNVDGNSS-SYSTEM-2) Supplied Equipment

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C-Nav7000 User Guide

Optional Equipment

1

2

3

4

SBX-4 Beacon Module

(P/N HEM940-4013-000)

12" Antenna Pole

(P/N WES534610)

Internal RF Cable for IALA Mod

(P/N FCI-INT-RF-IALA)

A31 Antenna, GPS L1 & Beacon

(P/N HEM940-2088-000)

Table 2: CNV7000-IALA-OPT IALA OPTION

1

2

3

ADL RXO UHF Module 430-470MHZ

(P/N PACK01147)

Base Antenna, 440-470Mhz, 7dBi

(P/N KAT721388 TNC)

Internal RF Cable for UHF OPT #1

(P/N FCI-INT-RF-UHF1)

Table 3: CNV7000-UHF-OPT UHF OPTION #1

1

2

ADL RXO UHF Module 430-470MHZ

(P/N PACK01147)

Base Antenna, 440-470Mhz, 7dBi

(P/N KAT721388 TNC)

3

Internal RF Cable for UHF OPT #2

(P/N FCI-INT-RF-UHF2)

Table 4: CNV7000-UHF-OPT UHF OPTION #2

1

2

12V DC Desktop Power Supply

(P/N MNWGS90A12-PIM)

Neutrik XLR Connector- Plug

(P/N NEUNC3MXX-B)

3

Cord, Power, IEC320-C13 (US)

(P/N 4000001-110)

Table 5: CNV7000PS-OPT C-Nav7000 Power Supply Option Kit

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C-Nav7000 User Guide

Section 2 – Principles of Operation

This section provides guidance on how the C-Nav7000 works. A block diagram of

the C-Nav7000 is shown in Figure 2 (Page 12 ) and a description of each

component in the C-Nav7000.

Figure 2: C-Nav7000 Block Diagram

UHF Radio Modules

Each UHF radio module is pre-programmed with the list of current Petrobras frequencies; a port on the back panel enables these frequencies to be updated.

The Channel (frequency) used by the radio is set by a combined display/switch on the front panel. This can be set to a specific channel or requested to scan the available channels for data. Data reception is indicated by turning the display background from red to green. A manual front panel selection switch determines

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C-Nav7000 User Guide which of the two UHF data output will be used. Note that this can be set to an inactive channel and this will still be the sampled channel even if data is present on the other receiver.

Frequency Controller

The frequency controller is a microprocessor connected to both UHF modules, capable of sending and confirming commands to change the current channel.

The current channel number is shown on a front panel combined display / switch unit. The processor can also perform a scan of all programmed channels and select the one with the best signal to noise ratio. Frequency selection and scanning are thus possible without connection to an external PC.

IALA Radio Module

The IALA radio module can be configured via a port on the back panel. It is normally set to auto scan for the highest signal strength. The output from the

IALA receiver is passed to the fallback switch. See Appendix C - IALA Module

(Page 32 ) for further information.

Fallback Switch

The fallback switch examines the output of the selected UHF channel for data and if data is absent for a period of time the fallback switch output changes from

UHF to IALA corrections. The sample period can be adjusted by an internal control. Should UHF data be detected then the corrections output will switch back to the selected UHF source.

Dual Outputs

The data stream selected by the fallback switch is output by two opto-isolated

RS- 232 ports. There are two RTCM104 outputs located on the rear panel of the

C-Nav7000.

Power Supply

The rack is powered by an external 12V DC power source, normally from a dual redundant power supply. As a default during assembly, the input source provides power to all of the modules and the C-Nav3050. If the C-Nav3050 needs to be powered from a different power source such as an AC source then it needs to be specified when the order is placed.

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Controls and Indicators

The front panel has the following controls and indicators:

ON/OFF Illuminated pushbutton, with cover guard

UHF #1 Channel display and sequencing switch

UHF #2 Channel display and sequencing switch

UHF #1 / UHF #2 selector switch

UHF #1 Selected green LED

UHF #2 Selected green LED

IALA Data Available green LED

UHF Output Selected green LED

IALA Output Selected red LED

Normal C-Nav3050 controls and indicators.

A PCB mounted potentiometer can be used to adjust the sample time of the fallback switch.

C-Nav3050

The C-Nav3050 is serviced using its standard cables via the aperture in the rear panel. Cable strain relief points are provided inside the enclosure.

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C-Nav7000 User Guide

Section 3 – Specifications

This section covers the C-Nav7000 specifications, including modules.

UHF Modules

Power Requirements

Input:

During RX:

Radio Specifications

3.3 V DC to 5.0 V DC + /

‐ 0.1 VDC

0.5 W @ 3.3 V DC; 0.7 W @ 5.0 VDC

Frequency Band:

Frequency Control:

Frequency Stability:

Channel Spacing:

Sensitivity:

430

‐470 MHz

Synthesized 12.5 kHz tuning resolution

+/

‐ 1 PPM

12.5/25 kHz (user

‐selectable)

‐110 dBm BER = 1 x 10‐5

Adjacent Channel Selectivity: > 55 dB

Type Certification

Certified for operation in the U.S., Europe, Australia and Canada

FCC, IC, EU, NZ, Australia ETS300

‐113‐2

Link Rate / Modulation

4FSK:

GMSK:

Link Protocols:

9600, 19,200 bps

4800, 8000, 9600, 16,000, 19,200 bps

Transparent EOT/EOC, Transparent FST,

Packet

‐Switched, Trimble®, SATEL®

Yes Forward Error Correction:

IALA Beacon Receiver

Radio

Channels:

Frequency Range:

Channel Spacing:

Revision 1

2-channel parallel tracking

283.5 - 325.0 kHz

500 Hz

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C-Nav7000 User Guide

MSK Bit Rate:

Operating Modes:

Cold Start Time:

Reacquisition Time:

Demodulation:

Sensitivity:

Out of Band Rejection:

Spurious Response:

Ripple (in-band):

50, 100 and 200 bps

Manual, automatic and database

< 1 minute typical

< 2 seconds typical

Minimum shift key (MSK)

2.5 microvolts/meter for 6 dB SNR @ 200 bps

60 dB < 204 kHz and > 404 kHz

< -55 dB (0.1 MHz to 1.6 MHz)

3 dB

Dynamic Range:

Frequency Offset:

100 dB

+/- 8 Hz (~ 27 ppm)

Adjacent Channel Rejection: 61 dB +/- 1 dB @ frequency center +/- 400 Hz

Antenna Input Impedance: 50 Ohms

Decoding: RTCM 6/8

Frequency Selection:

Serial Ports:

Interface Level:

Data Port Baud Rate:

Manual or offset

2 full-duplex

HCMOS, tracks input voltage

4800, 9600, 19200, 38400 and 57600 baud

Corrections Output Protocol: RTCM SC-104

Data input / Output Format: NMEA 0183

C-Nav7000

Voltage:

UHF #1 Antenna:

UHF #2 Antenna:

IALA Antenna:

RTCM104 Dual Outputs:

UHF Configure:

IALA Configure:

12V DC regulated, 60 W

TNC

TNC

TNC

DCE DB9 female tx out pin 2 (back panel)

DCE DB9 female back panel

DCE DB9 female back panel

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C-Nav7000 User Guide

Section 4 –Installation

This section provides guidance on hardware installation. Figure 3 (Page 17)

shows the rear panel of the C-Nav7000 and its contents.

Figure 3: C-Nav7000 Rear Panel

Please note:

Prior to commencing any installation, discuss proposed mounting

Locations / methods and cable routes with those involved to ensure all parties are aware of the work to be done and the risks involved.

Rack Installation

Refer to Figure 1 for the steps below:

1) If a 19” rack has not been provided, find a suitable rack on board the vessel to mount the 2U (3.5”) tall C-Nav7000.

2) Secure the outer sliding rails to the rack.

3) If there are no front rack nuts already on the rack, use the nuts provided with the C-Nav7000.

4) Remove the top panel of the C-Nav7000 for connecting the C-Nav3050 cables (Total of seven screws: six Phillip-head screws on the top and the seventh (also a Phillips-head) screw in the rear).

5) Slide the C-Nav7000 onto the rails, ensuring that the C-Nav7000 is secured onto the outer rails.

6) Connect the C-Nav3050 cables to their correct positions refer to the

C-Nav3050 User Guide .

7) Connect the IALA antenna cable to the TNC receptacle labeled “IALA” (if

this option is installed). See Installation of Antennas (Page 18 )

8) Connect UHF antenna cables (if this option is installed). See Installation of

Antennas (Page 18 )

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C-Nav7000 User Guide

9) (If applicable) Connect serial cable from the RTCM104 Out port to the device that is receiving the RTCM104 corrections data.

10) Connect the XLR plug from the power supply cable (or the optional power supply kit P/N CNV7000PSOPT) to the power socket labeled “12V DC”.

Note: The C-

Nav3050 will then start up upon connecting power to the “12V

DC ” socket.

11) Slide the rack back out, ensuring that there is enough slack for the cables that are connected to the back of the C-Nav7000. Once you have the necessary slack, dress up the cables.

12) Place the cover back on top of the C-Nav7000. Secure the six Phillips-head screws on top and the seventh (also a Phillips-head) screw in the rear.

13) Slide the C-Nav7000 back into the rack. Secure the C-Nav7000 front panel with the existing screws.

Installation of Antennas

Always wear appropriate protective equipment, including a certified fall arrestor harness and hardhat when working at heights to prevent injury to personnel, or death. Prior to commencing any work on the mast, ensure that all radar systems are switched off and isolated.

The basic C-Nav7000 comes with the GNSS antenna. If the C-Nav7000 has either the IALA and/or the UHF option installed, it will come with the antennas

mentioned in Figure 4 (Page 18 ).

GNSS IALA UHF

Revision 1

Figure 4: Supplied Antennas

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C-Nav7000 User Guide

Determining Proper Antenna Placement

While the UHF and IALA Beacon antennas can be placed in lower locations with less consideration for shading and blockage, GNSS antenna placement is critical to good system performance. It is necessary to mount the GNSS antenna as high on the mast as possible in order to avoid shading by surrounding structures. UHF and Beacon antennas may be placed along handrails with a clear view horizontally as the UHF and Beacon signals are land-based, rather than the space-based GNSS and SBAS signals.

Considerations for GNSS Antenna placement include

:

1) Locate the antenna where it has a clear view of the sky, to an elevation angle of 7º if possible. Obstructions below 15º elevation generally are not a problem, though this is dependent on satellite availability for the local region.

2) Avoid placing the antenna where more than 90º azimuth of the sky is obstructed. When more than 90º of azimuth is shaded, it is often still possible for the receiver to navigate; however, poor satellite geometry (due to satellite shading) will provide poor positioning results. Even 10º of shading can have a negative effect on performance, though this generally is not the case.

3) Avoid placing the antenna on or near metal or other electrically reflective surfaces.

4) Do not paint the antenna enclosure with a metallic-based paint.

5) Secure the antenna to the mast firmly to avoid wind and vibration which can affect the performance of the C-Nav3050 system.

6) Avoid placing the antenna near electrical motors (elevator, air conditioner, compressor, etc.) or other sources of interference such as radar systems, sitcom (satellite communication) domes, HF antennas or whip antennas.

7) Do not place the antenna too close to other active antennas. The wavelength of L5 is 0.255 m (approximately 1 inch) and G1 is 0.187 m (approximately ¾ inch). The minimum acceptable separation between antennas is 1 m (39 in), which provides 5.9 dB of isolation. For 10 dB of isolation, separate the GNSS antennas by 2.55 m (approximately 8.3 feet), and for 13 dB of isolation

(recommended) separate the antennas by 5.1 m (approximately 16.7 feet).

8) Active antennas (those with LNAs or amplifiers) create an electrical field around the antenna. These radiated emissions can interfere with other nearby antennas. Multiple GNSS antennas in close proximity to each other can create multipath and oscillations between the antennas. These add to position error or the inability to process the satellite signals.

9) Most antennas have better gain when the satellite is high in elevation.

Expect tracking performance to fade as the satellite lowers in elevation. It is not unusual to see 10dB difference in antenna gain (which translates into signal strength) throughout the entire elevation tracking path.

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C-Nav7000 User Guide

10) Use satellite prediction software with a recent satellite almanac to assess the impact on satellite visibility at your location. An L-Band Communication

Satellite Locator tool is available on CNav’s website and Product DVD to aid in determining potential obstructions to the C-Nav Signal: Refer to

Satellite Calculator

11) A clear line of sight between the antenna and the local INMARSAT satellite is required to track the C-Nav Corrections Service signal. INMARSAT satellites are geo-synchronized 35,786 kilometers (Approximately 22,300 miles) above the Equator.

Antenna Installation

Once the antenna location has been determined based on the aforementioned criteria, mount the antenna onto an antenna-mounting pole via the antenna mounting pole adaptor. This should be done on deck prior to climbing the mast as mounting the antenna aloft poses potential risks to personnel and equipment due to possible dropped object hazards.

Install the antenna with an antenna-mounting pole in the predetermined location.

The pipe can either be welded to the mast for a more permanent installation, or secured using stainless steel hose clamps.

Revision 1

Figure 5: C-Nav3050 Antenna Mast Installation

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C-Nav7000 User Guide

Coaxial Cable Installation

Proper installation of coaxial cables is important to ensure successful communication between the antenna and sensor.

When choosing a cable route for coaxial cable, consider the following:

1) Avoid running coaxial cable across, or parallel to power cables and high power RF cables.

2) Ensure that the cable route is free of sharp edges or places where the cable could become pinched, kinked, sliced or damaged in any way.

3) Determine the manufacturers ’ specifications for the coaxial cable in use. This should include: impedance, diameter, attenuation in dB/100 ft and dB/100 m for the frequencies used, and velocity of propagation.

4) Ensure the cable does not exceed the recommended minimum bend radius sugg ested by the manufacturer. LMR400 has a bend radius of 1”

(installation) and 4” (repeated).

5) Ensure there is sufficient space at the cable entry point to the bulkhead as to not damage the connector during installation.

6) Measure the length of the cable route and determine the acceptable cable length in relation to attenuation loss at the frequencies in use.

7) In-line amplifiers suitable for all GNSS frequencies may be used to increase the length of the antenna cable, but care should be exercised that tracking performance is not degraded due to multiple connections, noise from the amplifier, and possible ingress of moisture and dust to the in-line amplifier.

In-line amplifier or splitter devices must pass DC power from the receiver to the antenna, or source the appropriate voltage and current to the antenna.

In-line amplifiers may also over-saturate the receiver front-end if improperly used.

Please Note:

Prior to connecting the coaxial antenna cable to the antenna, ensure that all

connections are free of dirt and other debris. Apply silicone grease to the

connector threads and wipe off any excess, ensure not to get any lubricant on

the contact. Connect the coaxial cable and hand-tighten firmly. Wrap the

connection with self amalgamating tape or rubber tape and then with vinyl

tape. Cover the taped area with Scotchkote® to prevent water ingress.

8) Slacken the coaxial cable and tape firmly to the antenna-mounting pole. This will prevent any undue strain on the cable connector and antenna.

9) With the cable connected to the antenna, create a service loop to account for future re-terminations and run the cable down the mast, securing with zip ties every 2 or 3 feet. Carefully lay the cable along the chosen route to further

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C-Nav7000 User Guide detect any potential kinks, bends or spots where the cable may become damaged.

10) Secure the cable along the cable route with tape or zip ties and place a label at the sensor end of the cable for identification purposes.

11) Connect the coaxial cable to the sensor. Ensure that any slack in the cable is neatly stowed and that the minimum bend radius is not exceed during this process.

Interconnection Diagram

The following diagram see Figure 6 (Page 22 ) shows the interconnection from

the C-Nav7000 to the various antennas and data connections. A dual data adapter is used to combine the outputs from both the C-Nav3050 and RTCM104 ports to the Vessel’s Dynamic Positioning system.

IALA UHF UHF

PC for UHF and/or IALA

Configuration

DUAL DATA ADAPTER

POWER

SUPPLY

DP B

DP A

Revision 1

FROM C-Nav3050

TO DP SYSTEM

SECOND OUTPUT

(IF REQUIRED)

Figure 6: C-Nav7000 Interconnection Diagram

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C-Nav7000 User Guide

Interfacing with Vessel Dynamic Positioning System

Depending on the Dynamic Positioning System in use, either RS-232 or RS-422 format data input is required. The C-Nav3050 GNSS Receiver provides data in the RS-232 format. Consult the vessel Captain or qualified DP Technician to determine the required data format. If the vessel’s DP requires data in the RS-

422 data format, a converter must be employed.

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C-Nav7000 User Guide

Section 5 - Operation

This section provides guidance on operating the C-Nav7000. Figure 7 (Page 24 )

shows the front panel of the C-Nav7000 with its buttons, switches and indicators.

Figure 7: C-Nav7000 Front Panel

Refer to Figure 7 (Page 24 ) for the following from left to right:

1) ON/OFF Pushing this button turns the UHF and IALA receiver modules on; this button will illuminate green. Pushing this button again turns the UHF and

IALA receiver modules off; the lamp is extinguished.

Please Note:

The ON/OFF function on the C-Nav3050 will already be powered up upon connecting to the 12V DC receptacle from a 12V DC source.

2) Select UHF Receiver #1 and #2: This switch selects which UHF Receiver the user wants to receive the corrections data from. In order to receive data on the selected receiver, the appropriate channel must be selected on the

Screen Key that the UHF Receiver is selected to. The Screen Key must be illuminated green in order to receive any data.

3) Channel Select Screen Keys: These allow the user to select the appropriate channel for each of the two UHF receivers. When the proper UHF Receiver is selected, the user can either advance to a known channel or scan to a receiving channel. Channel selection is performed by: a. Press the Screen Key in ½ second intervals to advance the channel manually (channel numbers only increase). An amber background on the

Screen Key denotes that the channel is in a manual change state. b. To scan a channel, press and hold the Screen Key for 5 seconds and release. The receiver will search for the channel that is receiving data by

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C-Nav7000 User Guide staying at that channel for 5 seconds before moving up to next channel if no data has been received. c. If a channel is receiving data, the background of the Screen Key will

illuminate green as seen in Figure 8 (Page 25 )

Figure 8: Receiving Data d. If a channel is not receiving data, the background of the Screen Key will

illuminate red as seen in Figure 9 (Page 25 ).

Figure 9: Not Receiving Data e. The C-Nav7000 controller saves channel frequencies displayed on both

Screen Keys into memory after it has been left untouched for 5 minutes.

4) IALA Data LED: This LED is lit green when IALA data is being received; off when it is not.

5) Fallback Control LEDs: The UHF LED is lit green when data is being received; off when it is not. The IALA LED is lit red when UHF selected is not receiving data; off when data is received to the selected UHF.

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6) C-Nav3050: The LEDs on the C-Nav3050 show GNSS, satellite corrections, data and Bluetooth status. For further information, please refer to C-Nav3050

User Guide.

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Appendix A - Petrobras UHF

Channels with Frequencies

This appendix shows the Petrobras UHF channels used for Annex V.

Channel

00

01

Frequency

(MHz)

464.2750

464.4500

Channel

04

05

Frequency

(MHz)

464.2500

464.5000

Channel

08

09

Frequency

(MHz)

Channel

464.9750 12

465.0125

Frequency

(MHz)

465.1250

02

03

464.9000

464.1750

06

07

464.4000

464.8000

10

11

465.0500

465.0875

Table 6: Petrobras DGNSS UHF Channels and Frequencies

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C-Nav7000 User Guide

Appendix B - ADL RXO UHF

Programming Procedures

This appendix provides guidance on programming the Pacific Crest ADL UHF

RXO modules. Although the modules are programmed at our Lafayette office, there may be a time where the end user will have to add or edit frequencies and reprogram them. This appendix assumes that the end user has a copy to

ADLCONF software (click here to download the latest ADLCONF software). The user can click here for generic instructions on using the ADLCONF software. The user can also contact C-Nav Support if they require any further assistance.

To program the UHF modules use the following steps:

1) Connect the DB9 Serial cable from a computer terminal (that has ADLCONF) to the UHF Config port.

2) Select the UHF receiver by switching the front toggle to the UHF # module that is being programmed.

3) Click on the ADLCONF icon on the computer.

4) Click on Connect..., and wait until the Connect to ADL Radio window

opens, see Figure 10 (Page 28 ).

Figure 10: Connect to ADL Radio Window

5) Select the correct mode, port and 9600 baud and click on OK.

6) After clicking on OK , a window with the text “This action will overwrite the current configuration. Continue?

” will pop up. Click YES to continue.

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C-Nav7000 User Guide

7) Click on the Frequencies Tab see Figure 11 (Page 29 ). Select File and click

on Import to upload the Petrobras Configuration File and press Open.

Figure 11: Frequency Configuration Window

Please Note:

If the Petrobras Configuration File is not available, then manually enter the frequencies using the ones in Appendix A. The bandwidth will be configured for the Brazil region at 25 KHz.

8) Click on the Program button.

9) Once again, another window with the text “This action will overwrite the current configuration. Continue?

” will pop up. Click YES to continue, see

Figure 12 (Page 30 ).

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Figure 12: Action Overwrite Window

10)

Figure 13 (Page 30 ) shows the configuration being read.

Figure 13: Reading Configuration Window

11) Click OK on the window that states “Radio’s configuration loaded

successfully

”, see Figure 14 (Page 31 ).

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Figure 14: Successful Radio Configuration

12) Click the Exit button and then click Continue

13) If necessary, change the front switch to the other UHF module and follow

steps 1-13.

14) Turn off the C-Nav7000 for 1minute; then turn it on.

15) Check if any channels are displayed on the screen keys.

16) Then turn off the C-Nav7000.

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Appendix C - IALA Module

The IALA module has been configured at the C-Nav Lafayette office. However, this appendix allows the user to send commands to the module if necessary. It is not recommended to make any changes to the IALA module, unless instructed by a C-Nav Technician for testing purposes. The receiver has two ports, P0 is the RTCM104 output port and has been configured to be at 9600 baud, 8, N, 1 and P1 is the configuration port at 4800 baud, 8, N, 1.

The IALA module has been configured to operate in ABS (Automatic Beacon

Search) mode by default, selecting and tuning to the most appropriate beacon without operator intervention. ABS mode is ideal for navigation applications over considerable areas with various beacon stations available, eliminating the need for operator intervention when traveling from one beacon coverage zone to another. A continuous search for the strongest RTCM signal is always performed using one of the two ports in the background, without affecting the performance of the locked channel. If the operator decides to use the manual mode to tune to specific frequency, using the $GPMSK NMEA 0183 command, please click here .

See the instructions below on how to communicate to the IALA module using the configuration port (IALA Config):

1) Change the RS-232 Cable from the UHF config connector at the rear of the enclosure to the IALA config.

2) Open Tera Term (Terra Term is a serial terminal program that allows the communication to the receiver by using commands on the computer) and refer to the GNSS diagrams (if applicable) to see which port is currently used for IALA. Click here to download the latest version (Note: file size is approximately 11MB)

3) Select Serial and then the appropriate Port. Press OK.

4) Click Setup / Serial port....

5) Configure the serial ports settings to be 4800, 8, N, 1. Press OK.

6) Click Setup / Terminal . Configure Transmit to “CR +CL” and check Local

echo. Press OK.

7) To test the communication type the following command on the terminal

$PCSI,0 and press enter. The response should be:

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$PCSI,P030-0,004

$PCSI,0 ->HELP Msg

$PCSI,1 ->Status line A,<T>,<S>

$PCSI,2 ->Status line B,<T>

$PCSI,3 ->Dump Search,<x>

$PCSI,4 ->Wipe Search

$PCSI,5 ->Port Rate,<P0>,<P1>

$PCSI,6 ->Reset

$PCSI,7 ->RTCM Mode

This quick test prepares for any commands that are instructed by the C-Nav

Technician.

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