GVF503E: Sea Tel Marine VSAT Installation and Maintenance

Course details

  • Factory-authorized training for installation, commissioning, operation, and troubleshooting of a Cobham Sea Tel ’09-series 3-axis marine stabilized antenna system. Animation and 3-D simulator-based interactivity are used extensively to explain concepts and provide realistic skills practice for the student.


Learn key aspects of how to install, commission, operate, and troubleshoot a Sea Tel ’09-series 3-axis marine stabilized antenna system through this online, self-paced, 3-D animated, highly interactive, simulator-driven course. Topics covered include principles of vessel motion, stabilized antenna operations, and SeaTel terminal details including configuring and monitoring techniques.

All equipment is explained, including the Sea Tel gimbaled mount, antenna and RF components, control system components, and navigation system connections. Details on satellite acquisition and tracking, mount balance concepts, operating modes, performing site surveys, installation and assembly, commissioning, maintenance, and troubleshooting are covered in depth.

Approvals required:

Very important: By agreement with Cobham SeaTel, before GVF may grant access to online training course GVF 503E, each student must be approved by Cobham Sea Tel.

Apply for approval here.

Note: We recommend you apply for approval and receive your confirmation email prior to paying your tuition fee; if you are not approved, your fee can be refunded only as GVF tuition credit.


This course is appropriate for engineers and field technicians who are responsible for installing and commissioning Sea Tel marine stabilized terminals, support staff interacting with field technicians, and all personnel who need a solid understanding of Sea Tel terminals.


GVF 520, 561, and 562E. Note: GVF 503E must be completed before commencing GVF 503E-S1.


Animated & interactive HTML/Flash, self-paced, on-line format. Requires Internet access while studying the course material. High speed access is preferred but is NOT required. Student's computer must have a current browser and the current version of the Adobe Flash player (free) installed.


Each lesson contains a mandatory quiz; some lessons may also contain simulator-based skill assessments. All pages must be viewed and all quizzes and simulator tests must be passed in order to complete the course.


18 lessons
  1. Using the Learning System
  2. Course Introduction
  3. Theory of Operation
  4. Hardware
  5. Site Survey
  6. Installing the Above Decks Equipment
  7. Installing the Below Decks Equipment
  8. Connecting the Satellite Modem
  9. Power-up and Checkout
  10. Gyro Compass and Tracking Setup
  11. Home Flag, Blockage, and System Setup
  12. Activating the Terminal
  13. Cross-pol Alignment
  14. Testing
  15. Balancing
  16. Configuration Utilities
  17. Troubleshooting
  18. Maintenance

Learning Objectives

  • Understand general SeaTel information and course prerequisites.
  • Know the major components of the terminal and the role of the Above Deck Equipment and the Below Deck Equipment.
  • Understand antenna axes of motion, stabilization, PCU stabilization sensors, balance, targeting, searching, and tracking loop components.
  • Understand targeting, searching, DishScan, tracking performance, external nav/GPS and compass inputs.
  • Be familiar with the 09 terminal block diagram including ADE and BDE.
  • Understand operation of DAC-2202, Tracking Receiver, Communications Interface, and PCU.
  • Know the Tx and Rx IF signal flow.
  • Understand the functions of the ACU, Terminal Mounting Strip, Dual Antenna Arbitrator, dual co/cross pol, LNB and its options, BUC and its options, radome, antenna and its options, dual-antenna option, and understand how hardware options can be combined as building blocks.
  • Learn which modems are compatible with the 09 series, the necessary connections to ship’s communication equipment, how power is connected and distributed, what other connections are required including alarms and blockage inputs, and built-in GPS capability.
  • Learn how to select the ADE position, IFL run location, the BDE position, and how to obtain vessel operator approvals.
  • Understand all details of ADE, IFL and BDE installation.
  • Understand the details associated with connecting satellite modems, user equipment, and how to conform to regulatory requirements.
  • Understand terminal power-up and check out, the operation of DacRemP software, and be able to verify proper GPS, AZ drive, and EL drive operation.
  • Understand the ACU parameters, how to check balance, how to set up of compass and tracking, how to set up the downlink band and pol scheme, and how to set up the tracking receiver and search parameters.
  • Discuss blockage, home flag, system setup, Rad Hazard zones, and system type set up.
  • Understand terminal activation, initial satellite acquisition, auto trim, joining the network, and lineup testing.
  • Understand the Customer hand-off, cross-pol alignment, functional testing, configuration utilities, and using the internal HTML page.
  • Understand troubleshooting procedures, faults, corrective actions, maintenance and repair, balancing, and adjusting counterweights.


Essential courses GVF 510, 520 and 521 have been converted to HTML5 and are available for use on all device types.

We are continuing to convert the remaining courses in the Training Membership throughout 2021.

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