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C-Nav Troubleshooting Guide
CNAV-MAN-0052
Revision E
®
C-Nav
Positioning Solutions
oceaneering.com/cnav

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Summary of Contents for Oceaneering C-Nav

  • Page 1 C-Nav Troubleshooting Guide CNAV-MAN-0052 Revision E ® C-Nav Positioning Solutions oceaneering.com/cnav...
  • Page 2: Revision History

    C-Nav, C-Nav3050, C-Tides and C-Monitor are trademarks of Oceaneering International, Inc. “This document is the property of Oceaneering International and may not be used for any purpose unless authorized in writing by Oceaneering and which, upon demand, shall be returned. For any queries, related to Warranty and Limitation of liability, please contact your Accounts Manager for more information.”...
  • Page 3: Table Of Contents

    Iridium antenna (Edge / Rockblock) troubleshooting for the C-NavX1 / X3 GNSS receiver ..... 13 REPLACEMENT PART NUMBERS ......................16 TROUBLESHOOTING FLOW CHART ..................... 17 C-NAV SUPPORT CONTACT DETAILS ....................18 CNAV-MAN-0052 C-Nav DOC-TEM-28-NUM Rev A Uncontrolled copy when printed Revision E...
  • Page 4: Introduction

    C-Nav Troubleshooting Guide INTRODUCTION This document is intended to provide troubleshooting steps for C-Nav receivers, antenna, and cable if the C-Nav receiver is experiencing performance issues caused by hardware fault or failure i.e., difficulty in tracking satellites. All values quoted in this guide are approximate.
  • Page 5: Definitions

    C-Nav Troubleshooting Guide DEFINITIONS Document Conventions Font Type Used for Arial Plain Text Arial Italic Setting Names ‘Arial Quoted ‘ Setting Values Arial Bold Button Names Arial Bold Italic Menu Items Arial Blue Cross Reference Arial Blue Underline Hyperlinks Arial Red Italic...
  • Page 6: Equipment Required

    Doing so will enable us to discover a shorted / open circuit also. This can be achieved by disconnecting the antenna cable from the C-Nav receiver. Next, with a multimeter, measure the resistance of the cable and antenna as shown in Figure 1 below, ensuring your multimeter is set to measure ohms Ω.
  • Page 7 ~2.8 K ohms antenna AN-2004T – Standard (white) C-Nav2050 GPS / L-Band antenna ~0.8 K ohms AD422 – High latitude (dark green & white) C-Nav L-Band antenna ~13.0 M ohms Table 1: Resistances of antenna and cable. Antenna Model Visual Representation...
  • Page 8 C-Nav Troubleshooting Guide Step 2: Following the diagrams below, take a voltage reading of the antenna power supply before reconnecting your antenna cable. Figure 2: C-NavX3 antenna power supply. Figure 3: C-NavX1 antenna power supply. ® Figure 4: C-Nav3050 antenna power supply.
  • Page 9 Figure 5: C-Nav5000 antenna power supply. New C-Nav receivers offer a potential difference of ~5 volts. Note that voltage will vary / degrade with the age of a device and due to environmental issues. So long as the receiver is outputting a voltage that can supply your antenna with the minimum required voltage as outlined in Table 3, then your C-Nav positioning system will function as required.
  • Page 10 If your main receiver to antenna cable length and type do not match the specifications listed in Table 3, it is advisable to source the correct cable or verify there is a suitable amplifier inserted in line with the connection, otherwise issues will be encountered with your C-Nav positioning system. For cable and amplifier supply and issues please contact C-Nav Support.
  • Page 11: Troubleshooting Antenna, Antenna Cable And Power Supply At The Antenna End (Up The Mast)

    GPS / Glonass / L-Band ~2.8 K ohms antenna AN-2004T – Standard (white) C-Nav2050 GPS / L-Band antenna ~0.8 K ohms AD422 – High latitude (dark green & white) C-Nav L-Band antenna ~13.0 M ohms Table 5: Resistances of antenna and cable. CNAV-MAN-0052 C-Nav...
  • Page 12 C-Nav Troubleshooting Guide • If your readings are greater than those in Step1, please restart the troubleshooting guide. A user error has occurred. • If your readings are quite a lot less than the readings taken in Step 1 then you possibly have a faulty cable.
  • Page 13: Iridium Antenna (Edge / Rockblock) Troubleshooting For The C-Navx1 / X3 Gnss Receiver

    Subscription active, coverage, working. Table 6: Iridium status LEDs. If the Iridium status LED is Yellow, then make C-Nav Support aware to double check your activation. If the LED is Red then further troubleshooting is required, please follow steps 1-4 below:...
  • Page 14 To start troubleshooting the Iridium antenna run, confirm data is flowing from the Iridium antenna to the C-NavX1 / X3 by checking the C-Nav control software’s ‘Receiver information’ page is reading the IMEI number of the Iridium antenna, this is sent from the antenna to software so will only display if there is functioning communication.
  • Page 15 C-Nav the PIN assignment can be seen in the table below.
  • Page 16: Replacement Part Numbers

    C-Nav Troubleshooting Guide REPLACEMENT PART NUMBERS Part Numbers Part Description 15m CNVLMR40050B / 30m CNVLMR400100B / LMR400 coaxial antenna cable. 45m CNVLMR400150B CNVEZ-400-TM-X LMR400 crimp on replacement connectors. CNV-INST-KIT LMR400 crimp tool, LMR400 prep tool (3 step stripper), coaxial cable cutter.
  • Page 17: Troubleshooting Flow Chart

    C-Nav Troubleshooting Guide TROUBLESHOOTING FLOW CHART Figure 14: Troubleshooting flow diagram. CNAV-MAN-0052 C-Nav DOC-TEM-28-NUM Rev A Uncontrolled copy when printed Revision E Page 17 of 18...
  • Page 18: Nav Support Contact Details

    C-Nav Troubleshooting Guide C-Nav SUPPORT CONTACT DETAILS Email: – For support issues and technical assistance. cnavsupport@oceaneering.com – For activation / deactivation requests and issues. cnavauthcode@oceaneering.com North and Central Americas: 202 Stanton Street, Broussard, LA 70518, USA Phone: +1 337 210 0000...

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