Eutelsat Communications SA · EURONEXT:ETL
Eutelsat Communications SA — Technical Presentation (May 1999)
71 slides from Eutelsat Communications SA's technical presentation, May 18, 1999
Slide 1: Mediacast 99 Manufacturers Seminar
Manufacturers Seminar - Mediacast 99 Mediacast 99 Manufacturers Seminar London May 18th, 1999 1 Welcome to EUTELSAT’s annual manufacturer’s conference, as usual held during the Cable and Satellite or Mediacast exhibition here at Earls Court. 1
Slide 2: Agenda - Mediacast '99
Manufacturers Seminar - Mediacast 99 AGENDA - MEDIACAST ‘99 • New Documentation • New Products and Applications • EUTELSAT DVB Service Information • Current & Future satellites • Satellite Interactive Terminals 2 This presentation is in five main sections as described above. 2
Slide 3: New Documentation
Manufacturers Seminar - Mediacast 99 NEW DOCUMENTATION • New DiSEqC™ Documents: – Application Information for using a “PIC”Micro-controller in DiSEqC™ LNBs and simple switcher – DiSEqC™ Positioner Application Note • Recommendations DVB services for Broadcasters and Operators • Recommendations for Ma
Slide 4: Application Information for Using a PIC Micro-controller in DiSEqC LNBs
Manufacturers Seminar - Mediacast 99 APPLICATION INFORMATION FOR USING A “PIC” MICRO- CONTROLLER IN DiSEqC™ LNBS AND SIMPLE SWITCHER • Provides general information on PIC micro device • Gives full details on Supply voltage and Reset circuit • Provides details on Pin functions • Shows typical applica
Slide 5: PIC Micro DiSEqC Slave
Manufacturers Seminar - Mediacast 99 PIC MICRO DiSEqC ‘SLAVE’ • PIC 16 C 621(A) - 04 I (OTP or mask ROM) • 18 pin DIL, SOIC & 20 pin SSOP packages • On-chip Program Code < 512 words • Full Backwards Compatibility : – (13/18 volts, 22 kHz Tone and ToneBurst) • Supports “Level 2.0”Reply messages • Vol
Slide 6: Typical PIC Application Circuit
Manufacturers Seminar - Mediacast 99 TYPICAL PIC APPLICATION CIRCUIT VDD out in I.F. 7805 1MΩ 39kΩ 1MΩ 100nF BUS λ 39kΩ 2n2F 15kΩ /4 1 P 18 1% 2 I 17 100kΩ C Mode 3 16 1nF 3kΩ 1% 100nF 100pF 4 1 15 100nF 6 14 4MHz 5 C 50 mA. 6 13 6 20 V. 7 2 12 OP6 (eg. SA / SB) 8 0 11 OP5 (eg. V / H) 9 x 10 OP4 (eg
Slide 7: PIC Micro DiSEqC Slave Code
Manufacturers Seminar - Mediacast 99 PIC MICRO DiSEqC™ ‘SLAVE’CODE • Program Versions for : • Universal , ‘Monoblock’ & ‘Loopthrough’LNBs • 2 & 4 input Switchers (decoded outputs optional) • 8 & 16 input Switchers (non-decoded outputs only) • Preliminary Application Note Available • ‘Fax-Back’form d
Slide 8: DiSEqC Positioner Application Note
Manufacturers Seminar - Mediacast 99 DiSEqC™ POSITIONER APPLICATION NOTE • Positioner Motor may take all its Power from Tuner-receiver, or inject extra d.c. directly or via bus cable • Supports software-defined Limits (endstops) • Commands to drive the motor continuously, by incremental steps, or fo
Slide 9: Recommendations DVB Services for Broadcasters and Operators
Manufacturers Seminar - Mediacast 99 RECOMMENDATIONS DVB SERVICES FOR BROADCASTERS AND OPERATORS • Provides overview of DVB specifications • Implementation recommendations for EUTELSAT Digital Platforms • Recommendations for SI • Mainly intended for operators of free to air programming • Includes re
Slide 10: Recommendations for Manufacturers of DVB Reception Equipment
Manufacturers Seminar - Mediacast 99 RECOMMENDATIONS FOR MANUFACTURERS OF DVB RECEPTION EQUIPMENT • Provides technical recommendations for the manufacture of reception and distribution of digital TV broadcasts via EUTELSAT • Gives specifications for the indoor and outdoor units for DTH and SMATV dis
Slide 11: 13° East Reception Guide for TV Services
Manufacturers Seminar - Mediacast 99 13° EAST RECEPTION GUIDE FOR TV SERVICES • Gives technical information on FM TV and DVB transmission frequencies • Gives guidelines on TVRO antenna diameters • Gives guidelines on the dish alignment • Introduces the HOT BIRD™ satellite system at 13°E – Frequency
Slide 12: Installers Guide
Manufacturers Seminar - Mediacast 99 INSTALLERS GUIDE • Describes general aspects of DVB-S carriers • Describes the reception systems architectures – Individual reception systems – SMATV reception systems • Presents the DiSEqC™ protocol • Describes EUTELSAT recommended features for reception equipme
Slide 13: New Products and Applications: DiSEqC Positioner
Manufacturers Seminar - Mediacast 99 NEW PRODUCTS AND APPLICATIONS • DiSEqC™ Positioner – One way communication protocol (level 1.2) – Uses only the single down lead from the LNB – Implemented protocol in DiSEqC™ receivers with just simple additions to the program software – Can add motor + interfac
Slide 14: New DiSEqC Products: LNB Loop-Through
Manufacturers Seminar - Mediacast 99 NEW DiSEqC™ PRODUCTS • LNB Loop-Through – DiSEqC™ level 2.0 compatible – Elegant solution for dual feed reception upgrade – Compatible with all dual LNB holders – Built in IF DiSEqC™ switch – DiSEqC™ inserters to control the Loop-Through LNB available from : EMIT
Slide 15: New DiSEqC Products: LNB Monoblock
Manufacturers Seminar - Mediacast 99 NEW DiSEqC™ PRODUCTS • LNB Monoblock – Reception of 6° spaced satellites – DiSEqC™ inserters to control the Monoblock LNB (EMITOR, GLOBAL, JOHANSSON, SPAUN, ...) – Full band reception 10,7 to 12,75 GHz, Level 2.0 compatible – Elegant and cost effective solution f
Slide 16: New DiSEqC Products: DiSEqC Inserters
Manufacturers Seminar - Mediacast 99 NEW DiSEqC™ PRODUCTS • DiSEqC™ inserters – Insert DiSEqC™ messages into the cable – Allow non- DiSEqC™ receivers to operate with DiSEqC™ only accessories (switches, LNBs...) – Cost effective solution to upgrade existing systems for multi satellite reception – Mul
Slide 17: New DiSEqC Products: Remote Controlled Head End
Manufacturers Seminar - Mediacast 99 NEW DiSEqC™ PRODUCTS • Remote controlled Head End – DiSEqC™ level 1.1 – Single cable distribution in the 40 to 2150 MHz range with 30 users on one cable (in IF band) – Unlimited choice of distributed transponders with access up to 256 times the IF band (950 to 21
Slide 18: New Products for Inclined Orbit Satellites
Manufacturers Seminar - Mediacast 99 NEW PRODUCTS FOR INCLINED ORBIT SATELLITES • General presentation – Satellite positions – Position variation • Earth station types • Reception Only equipment – Motorized LNB – Motorized antenna – Other Solutions 18 With the rapid replacement of the existing fleet
Slide 19: Inclined Orbit Satellites (End 2000)
Manufacturers Seminar - Mediacast 99 INCLINED ORBIT SATELLITES (END 2000) II-F1 48°E I-F5 W4 & II-F4 W3 II-F3 I-F4 Europesat SESAT 12.5° 7°E Ressat HOT BIRD W2 21.5° 25.5° II-F2 36°E 10°E 1-5 16°E E E 29°E W 13°E Fixed satellite Inclined Orbit Satellite 19 The blue satellites will be in inclined orb
Slide 20: Inclined Orbit Satellites Position Variation
Manufacturers Seminar - Mediacast 99 INCLINED ORBIT SATELLITES POSITION VARIATION Inclined Orbit Satellite - Period : 24h - Max angle amplitude : +/-5° - Variation : +0.8°/year 20 When a satellite is nearing the end of it’s station-keeping fuel, the North- South manoeuvres are stopped and only the E
Slide 21: Earth Station Types for IOS
Manufacturers Seminar - Mediacast 99 EARTH STATION TYPES FOR IOS Class Size/Type Tracking System Applications Eirp Price Availability Status A ≥ 3.7 m Commercial Large Network Hub, 70 dBW ≥200 k€ Readily available from Tx/Rx Autotrack DVB feed, up (no limit) major system suppliers. High Speed P-t-P.
Slide 22: Motorized Antenna
Manufacturers Seminar - Mediacast 99 RECEPTION EQUIPMENT FOR INCLINED ORBIT SATELLITES Motorized Antenna M MOTORIZED ELEVATION 22 The advantage of this solution is that by moving the entire reflector the integrity of the radiation pattern is maintained and therefore this type of antenna could be use
Slide 23: Motorized LNB
Manufacturers Seminar - Mediacast 99 RECEPTION EQUIPMENT FOR INCLINED ORBIT SATELLITES Motorized LNB M high position M center position low position 23 Although mechanically simpler than the motorized antenna, the deterioration in the cross-polar discrimination due to an off-set feed means this solut
Slide 24: Eutelsat DVB Service Information
Manufacturers Seminar - Mediacast 99 EUTELSAT DVB SERVICE INFORMATION • First Step to implement precise interpretation of DVB NIT: “All transport streams carrying the 013E Network_ID will carry all other services using the same ID in their NIT” • The full 13E NIT will will be implement first in one
Slide 25: Eutelsat DVB Service Information: Customised Channel Listing
Manufacturers Seminar - Mediacast 99 EUTELSAT DVB SERVICE INFORMATION • Proposal for customised channel listing • Use Bouquet Association Table (BAT) to designate ordering of channels by customer selected criteria: – by language – by footprint (i.e. only widebeam) – by genre • Questions: – Do IRDs u
Slide 26: Eutelsat DVB Service Information: Future Developments
Manufacturers Seminar - Mediacast 99 EUTELSAT DVB SERVICE INFORMATION • Future developments could include: – Analogue channel information – Cable network configuration tables – Frequency reference table for SCPC services • IRD Software downloads – EUTELSAT is already testing this for several manufac
Slide 27: Current & New Satellites
Manufacturers Seminar - Mediacast 99 CURRENT & NEW SATELLITES • The EUTELSAT fleet in May 1999 • Launch Schedule • The EUTELSAT fleet in 2001 • W Series Satellites • SESAT Satellite • EUROPESAT-1B 27 27
Slide 28: The Eutelsat Fleet in May 1999
Manufacturers Seminar - Mediacast 99 THE EUTELSAT FLEET IN MAY 1999 II-F1 48°E I-F5 TDF2 II-F2 W3 I-F4 36°E 7°E II-F4 HOT BIRD 1- W2 25.5° TVSAT2 10°E 5 16°E E 12.5° W 13°E Fixed satellite Inclined Orbit Satellite 28 Correct as of May ‘99 28
Slide 29: Launch Schedule
Manufacturers Seminar - Mediacast 99 LAUNCH SCHEDULE • SESAT 36°E Q3 1999 • W4 36°E Q3/4 1999 • RESSAT 10°E Q2 2000 • EUROPESAT 1B 29°E Q3 2000 • Atlantic Bird 1 12.5°W Q1 2001 29 SESAT currently scheduled for late July launch. 29
Slide 30: The Eutelsat Fleet in 2001
Manufacturers Seminar - Mediacast 99 THE EUTELSAT FLEET IN 2001 II-F1 or II-F4 48°E Atlantic W4 & Bird 1 W3 Ressat HOT BIRD 1-5 W2 II-F3 II-F2 Europesat SESAT 7°E 10°E 13°E 16°E 21.5°E 25.5° E 29°E 12.5°W 36°E Stabilised satellite Inclined Orbit Satellite 30 Subject to change (please refer to latest
Slide 31: W Satellites Series Fixed Beam
Manufacturers Seminar - Mediacast 99 W SATELLITES SERIES FIXED BEAM + 4 dBK 47 dBW +2 dBK 0 dBK 45 dBW - 3 dBK 43 dBW 40dBW 31 31
Slide 32: W1R, W2, W3 Examples of Steerable Spotbeams
Manufacturers Seminar - Mediacast 99 W1R, W2, W3 EXAMPLES OF STEERABLE SPOTBEAMS G/T E.I.R.P G/T (dBW) (dBK) 53 * 9 52 8 51 7 50 6 49 5 46 2 44 0 42 -2 * beam centre spot beam fixed coverage 32 32
Slide 33: W4 Russian Beam
Manufacturers Seminar - Mediacast 99 W4 RUSSIAN BEAM Murmansk Vorkuta Nariyan-Mar St. Petersburg Moscow Tyumen Kalingrad Chelyabinsk Orenburg /K dB /K 5 d B B /K 4. .5 d 3 5 /K B 2. Astrakhan d Krasnodar .5 -0 52 dBW Sochhi 51 dBW Nalchik 50 dBW Mahchach-Kala 47 d BW 33 33
Slide 34: W4 African Beam
Manufacturers Seminar - Mediacast 99 W4 AFRICAN BEAM 0 d B K -1 / 4 2 . 5 d B W - 2 . 5 d B K -1 / 4 0 d B W 0 d B K -1 / 4 2 . 5 d B W 4 0 d B W - 2 . 5 d B K -1 / 4 0 d B W - 2 . 5 d B K -1 34 34
Slide 35: SESAT Satellite
Manufacturers Seminar - Mediacast 99 SESAT SATELLITE • SESAT: Siberia Europe Satellite at 36° East • 10 years lifetime, launch date July 99 • 18 transponders (72 MHz) • 10.95-11.7 GHz and 12.5 to 12.75 GHz • 1 fixed coverage + 1 steerable beam • EIRP: Widebeam 40 - 47 dBW Steerable beam : 40 - 49 dB
Slide 36: SESAT Widebeam
Manufacturers Seminar - Mediacast 99 SESAT WIDEBEAM 45dBW 47 dBW + 4 dBK +2 dBK 0 dBK 45 dBW - 3 dBK 43 dBW 40 dBW 36 36
Slide 37: SESAT Examples of Steerable Spotbeams
Manufacturers Seminar - Mediacast 99 SESAT EXAMPLES OF STEERABLE SPOTBEAMS 40 dBW 49 dBW 47 dBW 45 dBW 37 37
Slide 38: Europesat-1B
Manufacturers Seminar - Mediacast 99 EUROPSAT-IB • 13° East is now completely full, EUTELSAT requires a new position for expansion of direct to home entertainment and multimedia services • New EUTELSAT position: 29° East • 36 transponders on Europesat-1B • Fixed and Steerable beams • Launch date : m
Slide 39: Europesat Fixed Beam
Manufacturers Seminar - Mediacast 99 EUROPESAT FIXED BEAM Moscow # Warsaw # A B C E F G D H A: 53 dBW, +8.0 dB/K B: 52 dBW, +7.0 dB/K C: 51 dBW, +6.0 dB/K D: 50 dBW, +5.0 dB/K E: 49 dBW, +4.0 dB/K F: 47 dBW, +2.0 dB/K G: 45 dBW, 0.0 dB/K H: 42 dBW, -3.0 dB/K 39 39
Slide 40: Europesat Example of Steerable Spotbeam
Manufacturers Seminar - Mediacast 99 EUROPESAT EXAMPLE OF STEERABLE SPOTBEAM A B C D E F G H A: 50 dBW, +8 dB/K B: 49 dBW, +7 dB/K C: 48 dBW, +6 dB/K D: 47 dBW, +5 dB/K E: 46 dBW, +4 dB/K F: 45 dBW, +3 dB/K G: 43 dBW, +1 dB/K H: 40 dBW, - 2 dB/K 40 40
Slide 41: Europesat Example of Steerable Spotbeam
Manufacturers Seminar - Mediacast 99 EUROPESAT EXAMPLE OF STEERABLE SPOTBEAM A B J C D E H A: 52 dBW, +8 dB/K F B: 51 dBW, +7 dB/K G C: 50 dBW, +6 dB/K D: 49 dBW, +5 dB/K E: 48 dBW, +4 dB/K F: 47 dBW, +3 dB/K G: 45 dBW, +1 dB/K H: 43 dBW, -1 dB/K J: 40 dBW, -4 dB/K 41 41
Slide 42: Satellite Interactive Terminals
Manufacturers Seminar - Mediacast 99 S atellite I nteractive T erminals 42 When speaking about SIT’s, mostly one refers to the device as specified for instance in ETSI spec DEN-SES-0044. What we find described there is basically a very small earth station, 11/12 GHz receive, 30 GHz transmit, specifi
Slide 43: Major SIT Characteristics
Manufacturers Seminar - Mediacast 99 MAJOR SIT CHARACTERISTICS • • • • 43 Therefore, when we refer to SIT’s here, we just mean “interactive terminal”. And, without going into a formal definition, we will highlight some of what we think are the major SIT characteristics, at the same time indicating h
Slide 44: Major SIT Characteristics: Small Rx and Tx
Manufacturers Seminar - Mediacast 99 MAJOR SIT CHARACTERISTICS • SMALL (< 1 meter) Rx and Tx • • • 44 In general, we are dealing with small Earth Stations, (antenna size some 1m diameter), with Receive and Transmit capability, transmit at 14 GHz in our case. The antenna is similar to what we are use
Slide 45: Major SIT Characteristics: Small Rx and Tx
Manufacturers Seminar - Mediacast 99 MAJOR SIT CHARACTERISTICS • SMALL (< 1 meter) Rx and Tx • • • 45 Here is shown, -somewhat schematically-, a co-polar radiation pattern of a typical Earth Station antenna. The arrow represents the so-called bore-sight of the antenna, and the Earth Station operator
Slide 46: Major SIT Characteristics: XPD
Manufacturers Seminar - Mediacast 99 MAJOR SIT CHARACTERISTICS • SMALL (< 1 meter) Rx and Tx • • XPD • 46 Here, the light blue represents the typical cross-polar performance of off-set front-fed Gregorian antennas, the type of antenna commonly used nowadays. Depending on the antenna’s geometry, the
Slide 47: Major SIT Characteristics: Low EIRP
Manufacturers Seminar - Mediacast 99 MAJOR SIT CHARACTERISTICS • SMALL (< 1 meter) Rx and Tx • LOW EIRP (fixed?) • • 47 As next point, we can say that, in general, SIT’s are limited in transmit power (some hundreds of mWatt’s, maximum one Watt); and moreover, that this power in many cases is not adj
Slide 48: Major SIT Characteristics: Standard M Adjustment
Manufacturers Seminar - Mediacast 99 MAJOR SIT CHARACTERISTICS STANDARD M EESS 502 • SMALL (< 1 meter) Rx and Tx • LOW EIRP 5.5.3 Adjustment (fixed?) Capability • Adequate means shall be provided to allow adjustment of the carrier level. • The level of each carrier should be adjustable over a range
Slide 49: Major SIT Characteristics: Simple Configuration
Manufacturers Seminar - Mediacast 99 MAJOR SIT CHARACTERISTICS • SMALL (< 1 meter) Rx and Tx • LOW EIRP (fixed?) • SIMPLE CONFIGURATION • 49 We will have a look at the possible SIT equipment configuration. In general a SIT will consist of an indoor equipment and an outdoor equipment, both very simpl
Slide 50: Major SIT Characteristics: Indoor Equipment
Manufacturers Seminar - Mediacast 99 MAJOR SIT CHARACTERISTICS • SMALL (< 1 meter) Rx and Tx • LOW EIRP (fixed?) • SIMPLE CONFIGURATION • INDOOR EQUIMENT 50 For instance, the indoor equipment in it’s simplest form could consist of a kind of Box, a TV-set and a Remote Control. 50
Slide 51: Major SIT Characteristics: Indoor Equipment
Manufacturers Seminar - Mediacast 99 MAJOR SIT CHARACTERISTICS • SMALL (< 1 meter) Rx and Tx • LOW EIRP (fixed?) • SIMPLE CONFIGURATION • INDOOR EQUIMENT 51 Or it could be standard PC with one or more dedicated cards. 51
Slide 52: Major SIT Characteristics: Indoor Equipment
Manufacturers Seminar - Mediacast 99 MAJOR SIT CHARACTERISTICS • SMALL (< 1 meter) Rx and Tx • LOW EIRP (fixed?) • SIMPLE CONFIGURATION • INDOOR EQUIMENT 52 Or it could be a PC and a box, connected to a port: parallel, serial or even USB. 52
Slide 53: Major SIT Characteristics: Outdoor Equipment
Manufacturers Seminar - Mediacast 99 MAJOR SIT CHARACTERISTICS • SMALL (< 1 meter) Rx and Tx • LOW EIRP (fixed?) • SIMPLE CONFIGURATION • OUTDOOR EQUIPMENT INDOOR EQUIMENT 53 And the indoor equipment will be connected to the outdoor equipment by means of a coaxial cable. 53
Slide 54: Major SIT Characteristics: Outdoor Equipment
Manufacturers Seminar - Mediacast 99 MAJOR SIT CHARACTERISTICS • SMALL (< 1 meter) Rx and Tx • LOW EIRP (fixed?) • SIMPLE CONFIGURATION • OUTDOOR EQUIPMENT INDOOR EQUIMENT 54 Or two cables. (This seems a trivial detail, but in reality it seems an issue, as we will see later). 54
Slide 55: Major SIT Characteristics: Simple Configuration
Manufacturers Seminar - Mediacast 99 MAJOR SIT CHARACTERISTICS • SMALL (< 1 meter) Rx and Tx • LOW EIRP (fixed?) • SIMPLE CONFIGURATION • INDOOR EQUIPMENT OUTDOOR EQUIMENT 55 The cable or cables will lead to the outdoor equipment, which will be a small Tx/Rx antenna with improved pointing mechanism
Slide 56: Major SIT Characteristics: RF Front-End
Manufacturers Seminar - Mediacast 99 MAJOR SIT CHARACTERISTICS • SMALL (< 1 meter) Rx and Tx • LOW EIRP (fixed?) Rx • SIMPLE CONFIGURATION • Tx 56 In most cases today, the front-end will look like this: Feed-horn, OMT to separate two polarization. Normally one port will be dedicated for transmit, an
Slide 57: Major SIT Characteristics: Combined Tx/Rx Unit
Manufacturers Seminar - Mediacast 99 MAJOR SIT CHARACTERISTICS • SMALL (< 1 meter) Rx and Tx • LOW EIRP (fixed?) • SIMPLE CONFIGURATION Tx/Rx • omt 57 What could appear in future would be something like this. Transmit and receive system combined in one unit, containing OMT and filtering at the same
Slide 58: DiSEqC Address Table
DiSEqC Address Table Manufacturers Seminar - Mediacast 99 Hex. ByteBinary Family and Sub-type 00 0000 0000 Any Device (Master to all devices) MAJOR SIT CHARACTERISTICS 10 0001 0000 Any LNB, Switcher or SMATV (Master to all...) 11 0001 0001 LNB 12 0001 0010 LNB with Loop-through switching 14 0001 01
Slide 59: Example Commands for Transmit Family
Manufacturers Seminar - Mediacast 99 Command Name Command Function Resolution Total Reply MAJOR SIT CHARACTERISTICS (Unit) trans. Data Bytes byte(s) Reset Reset DiSEqC microcontroller Initialize Initialize Tx-unit, Rf-power off and Reset DiSEqC microcontroller Tx Disable Disable Transmission 1 Tx En
Slide 60: Major SIT Characteristics: Type Approved
Manufacturers Seminar - Mediacast 99 MAJOR SIT CHARACTERISTICS • SMALL (< 1 meter) Rx and Tx • LOW EIRP (fixed?) • SIMPLE CONFIGURATION • TYPE APPROVED 60 The last aspect to consider are approval issues. It shall be obvious that with user terminals to be installed in large quantities (and in differe
Slide 61: Type Approval (ESOG Module 120, ETSI TBR 28)
Manufacturers Seminar - Mediacast 99 MAJOR SIT CHARACTERISTICS • SMALL •EUTELSAT (< 1Approval Type meter) Rx (ESOG and Tx Module 120) • LOW EIRP (fixed?) •ETSI •Type Approval SIMPLE (TBR 128) CONFIGURATION • TYPE •Automated APPROVED Site Clearance 61 First of all, of course the EUTELSAT Type Approva
Slide 62: Major SIT Characteristics Summary
Manufacturers Seminar - Mediacast 99 MAJOR SIT CHARACTERISTICS • SMALL (< 1 meter) Rx and Tx • LOW EIRP (fixed?) • SIMPLE CONFIGURATION • TYPE APPROVED 62 So when we now look at our SIT we see that it concerns a : • Small Tx/Rx antenna at 12/14 GHz with proper pointing mechanism • It has a low and e
Slide 63: Web-Sat Main Characteristics
Manufacturers Seminar - Mediacast 99 Web-Sat® Main Characteristics • Application: High Speed Internet (TCP/IP, FTP) • Outbound: 4 MB/s DVB Multiplex • User Return: Burstmode, 16 kb/s, ALOHA • User Terminal: Front-fed 84 cm equiv. elliptical 400 mW Tx Power (37 dBW) 63 63
Slide 64: Web-Sat Indoor Equipment
Manufacturers Seminar - Mediacast 99 Web-Sat® INDOOR EQUIPMENT 64 As to indoor equipment, for receive, we find a standard DVB receive card. And for transmit, there is a dedicated PCI card which contains everything, power supplies included. This is delivered as part of the standard user package, CD-R
Slide 65: Web-Sat Outdoor Equipment
Manufacturers Seminar - Mediacast 99 Web-Sat® OUTDOOR EQUIPMENT 65 The antenna has an elliptical shape, which was chosen for several reasons: First of all, to obtain an improved inter-satellite isolation. But also because the terminal is destined to work with neighboring satellites in a multi-feed c
Slide 66: Web-Sat Azimuth-Elevation Fine Pointing
Manufacturers Seminar - Mediacast 99 Web-Sat® AZIMUTH-ELEVATION FINE POINTING 66 This is a detail of the Azimuth and Elevation pointing mechanism, which are improved compared to the original antenna (the reason why we need this were explained before). 66
Slide 67: Web-Sat Polarization Alignment
Manufacturers Seminar - Mediacast 99 Web-Sat® POLARIZATION ALIGNMENT 67 This device, a graduated plate, is behind the antenna and allows aligning of the antenna’s major axis parallel to the geo-stationary arc. First of all, it serves to align the polarization of the antenna. At the same it permits t
Slide 68: Web-Sat Feed/OMT Assembly
Manufacturers Seminar - Mediacast 99 Web-Sat® FEED/OMT ASSEMBLY XPD 68 Here is a detail of the focal plane equipment; the classical configuration as described before. Something should be explained here in relation with cross-polarization isolation. Given the fact that the Channel Master antenna has
Slide 69: Web-Sat Feed/OMT Assembly
Manufacturers Seminar - Mediacast 99 Web-Sat® FEED/OMT ASSEMBLY 69 What we try to obtain is lowering of the cross-polar lobes by adding some features to the feed that counter-act the depolarization effect of the main reflector. As such, this is not new, it is a technique which is applied since many
Slide 70: Eutelsat Multisatellite Interactive Terminal
Manufacturers Seminar - Mediacast 99 EUTELSAT MULTISATELLITE INTERACTIVE TERMINAL • Requirements: – Transmit/Receive from one orbital position – Receive only from several adjacent positions – Use existing low cost TVRO reflectors – Meet all existing regulations for transmitting (in particular xpd) •
Slide 71: Manufacturers Seminar - Mediacast 99 Thank you for attending (reading) this presentation, EUTELSAT always
Manufacturers Seminar - Mediacast 99 71 Thank you for attending (reading) this presentation, EUTELSAT always welcomes feedback and input from all manufacturers of satellite reception and transmission equipment. 71