This document provides information about VSAT (Very Small Aperture Terminal) satellite networks. It defines VSAT as a two-way communication system between a satellite and ground station using a small dish antenna. It then describes VSAT remote terminal block diagrams, the importance of VSAT networks for connectivity, different VSAT configurations and topologies including star and mesh networks. It also summarizes the functions of a VSAT hub, common VSAT applications for broadcasting and interactive services, benefits of VSAT networks, and basic VSAT installation steps.

1. NAME: AHMED AMIRUL AREFIN
ID: 021-131-088
SEC: D
PROJECT NAME: VSAT

2. CONTENT
>About VSAT
>VSAT remote terminal block diagram
>Importance of VSAT network system
>Configuration of VSAT
>Uses of VSAT
>VSAT satellite network topology
>Work of VSAT Hub
>VSAT Application
>Benefit of VSAT Network
>VSAT installation

3. VSAT
• The elaboration of VSAT is Very Small Aperture Terminal.
• Basically its satellite base communication.
• A Very Small Aperture Terminal (VSAT), is a two-way
communication between satellite and ground station with a
dish antenna .
• VSAT are most commonly used to transmit narrowband data, or
broadband data .

4. VSAT INTRODUCTION

5. VSAT REMOTE TERMINAL BLOCK DIAGRAM

6. IMPORTANCE OF VSAT
• In a word when & where Radio, Fiber ,Wimax network
establish is impossible there VSAT network establish is
possible.
• A good advantage this type of networks longevity high that’s
why we like to use VSAT Network.

7. VSAT SATELLITE NETWORK TOPOLOGY
**2 Network
Topology**
• Star Network System
• Mesh Network
System

8. STAR NETWORK SYSTEM
• In star topology - The host network is connected to a central
hub with a point-to-point connection. All traffic that traverses
the network passes through the central hub. The hub acts as a
signal repeater.

9. MESH NETWORK SYSTEM
• Mesh is a network topology in which devices are
connected with many redundant interconnections between
network nodes . In a true mesh topology every node has a
connection to every other node in the network.

10. WORK OF VSAT HUB
• VSAT terminals are generally part of a network, with a larger Earth station
that serves as network “hub”.
A hub consists of RF equipment, VSAT interface equipment, and user Interfaces.
The RF equipment consists of antenna, LNB, SSPA and frequency converters.
The RF equipment at the hub can be packaged in an outdoor unit to reduce the
transmission line losses.
Hubs are usually located where the bulk of network traffic originates and/or
terminates.

12. VSAT APPLICATION
• VSATs are suited to many applications which broadly fall into
two categories:
• • Broadcasting or one-way applications,
• • Interactive or two-way applications

13. BROADCASTING OR ONE-WAY
APPLICATIONS
• Broadcasting represents one of the earliest and simplest
applications for VSATs. Voice, video, or data is transmitted from
a central station and broadcast to VSATs within the satellite
beam coverage. It might seem that the signal is subject to
access by unauthorized VSATs; however, the broadcaster can
control access to the information to allow only the desired group
of VSATs to receive the information. This access is often
implemented in software and is often called “narrow-casting”.

14. INTERACTIVE OR TWO-WAY APPLICATIONS
• This category consists of an application involving an inquiry from one
terminal and a subsequent response from another terminal.
Some examples are:
1.file and batch transfers for financial institutions, stock brokers, and banks
(i.e., branch offices to headquarters.
2.reservation requests and confirmations for airlines, hotels and travel
agencies.
3.Data request retrieval from remote sensing on oil drillings, pipe
4.Lines, gas, electric, and transport industries; and
5.Remote processing and LAN extension

15. BENEFIT OF VSAT NETWORK
From the application perspective, VSAT networks offer the following benefits:
• wide range of data, voice, and video applications;
• proven and robust technology, with high user satisfaction;
• quick network deployment;
• rapid and direct access to telecommunications;
• rapid response to market needs, because of ease of expansion.
• reliability and ease of maintenance; and
• reliable operation with around-the-clock support from the INTELSAT
Operations Centre.

16. VSAT INSTALLATION
Installation equipment:
• 1. 1.2m Reflector 2.iDirect (modem) 3.iDirect (modem) power 4.RG 11
Cable .5.LAN Cable 6.Laptop 7.Base pipe (5 fit) 8.OMT (Orthomode
Transducer) 9.SPC 10.Lnb (3 angle) 11.Feed horn.
Installation step:
• Step-1
• At first we have to done place with compass azimuth 141 and set up
base pipe .
• Step-2
• Adjust the reflector up and down in elevation by turning the two 12mm
nuts and omt with and spcm lmb are adjust.

17. • Step-3
• Spcm with opposite side indirect are connected TX and lmb are
connect RX. Then with lan cable VSAT are modem from lan side
are connected with laptop lan and switch on power.
• Step-4
• Then we have to done azimuth 141 and elevation are adjust 52.
When we get received highest signal then fixed the equipment.

18. THANKS