Technical Bulletins

New EUMETCast Africa Service

The EUMETCast Africa Service will move from EUTELSAT 5 West to EUTELSAT 8 West. Parallel Broadcasts will run from May 2018 until July 2018.

The current satellite is approaching its end of life and a C-band service will no longer be available from the 5° location. The follow-on service will be provided from EUTELSAT 8 West starting in May 2018.

The purpose of this announcement is to provide details of the upcoming changes to allow a smooth transition of users to the new EUMETCast Africa Service.

The new service will be based on DVB-S2 to take advantage of the better spectral efficiency of the broadcast.

Transponder Parameters

Since 1 May 2018 EUTELSAT 8W has been used for the new EUMETCast Africa Service. The following table shows the final downlink parameters.

PARAMETER  
Name EUTELSAT 8W
Transponder C04
Down Link Frequency 3848.2525 MHz
Symbol Rate 9.892 MS/s
Polarisation Circular Left Hand
DVB-S2 MODCOD 4PSK (QPSK) 3/4

Antenna size requirements

The following diagrams give the availability plots for different reception antennas sizes:

 

 
   1.8 m Antenna Reception coverage vs link availability

 

 

 

 
   2.4 m Antenna Reception coverage vs link availability

 

 

 

 
   3.7 m Antenna Reception coverage vs link availability
 

 

C-Band Downlink Coverage

The following Downlink EIRP diagram gives an indication where the service can be received.

 
  
 

EUMETCast Channels

EUMETCast Channels: Africa Service E8W

Channel Name PID (Decimal) Max Data Rate (kbps) Remark
TSL-AFR-1 100 300 Announcement Channel
A1C-Charter-1 100 2679 Disaster Charter Data
A1C-DCP-1 100 40 DCP Data
A1C-EPS-G 100 442 EPS Global Data
A1C-GEO-1 100 1769 IODC High Rate Seviri
A1C-GEO-2 100 752 IODC Meteorological Products
A1C-GEO-3 100 1613 Primary(0°) High Rate Seviri
A1C-GEO-4 100 1126 Primary(0°) Meteorological Products
A1C-Info-Channel-1 100 1061 General info, updates
A1C-Info-Channel-2 100 796 Daily logs, training, demonstration data
A1C-JAS-3 100 241 Jason-3 Data
A1C-RDS-1 100 53 EARS Data
A1C-S3A-03 100 3407 S3A OLCI Level 2 Reduced Resolution
A1C-S3A-04 100 3407 S3A SLSTR Level 2 WST
A1C-S3A-06 100 3407 S3A SRAL Level 2 Marine NRT
A1C-S3A-08 100 530 S3A SRAL Level 2 Marine STC
A1C-SAF-1 100 884 OSI SAF Data
A1C-SAF-2 100 442 LSA SAF Data
A1C-SAF-3 100 44 AC SAF Data
A1C-SAF-4 100 44 CM SAF Data
A1C-TPC-1 100 201 Third Party Ocean Data (AMESD)
A1C-TPC-5 100 221 Copernicus Global Land Data
A1C-TPC-6 100 2016 Third Party Data for Africa
A1C-TPG-1 100 575 Third Party GEO Data
A1C-TPL-1 100 575 Third Party LEO Data
A1C-TPL-2 100 241 Jason-2, Saral Data
A1C-TRN 100 176 Training Data
A1C-WMO-RA-I 100 1061 WMO RA-I Data (MDD)
WWW-Channel 100 63 WWW Content

Q&A

Where can I download configuration, software and documentation?

The detailed EUMETCast Africa DVB-S2 Migration Setup Guide and all files for this migration can be downloaded from the following ftp site: ftp://ftp.eumetsat.int/pub/OPS/out/user/EUMETCast_Support/Africa_Migration

What hardware changes are needed to support the second transponder?

The new EUMETCast Africa Service will transmit using the same circular polarisation as the current service. Therefore, the existing feed and LNB can be used.

The new service will use the DVB-S2 Transmission Standard — all users should check if their existing device is a DVB-S2 device. The Service will NOT work with a DVB-S device.

If your device is compatible with DVB-S2 and you are successfully receiving the current service, then it will also work under DVB-S2.

If the existing device supports only DVB-S then it must be upgraded. The devices compatible with the EUMETCast Europe service will also be compatible with EUMETCast Africa and are listed on the Reception Station Set-up web page. If you have access to different devices not listed on our WEB page, please contact our helpdesk and ask for advice.

What software changes are needed to support the new EUMETCast Africa Service?

Although the existing Tellicast working version will continue to work, it is strongly recommended you use the latest Tellicast versions available from EUMETSAT:

  • V2.14.1 rpm or debian or tar.gz for Linux
  • V 2.14.4_7 installer for Windows (new, including new Africa service)

On Windows systems:
Please install the latest version “eumetsat-setup-2.14.4_7.msi”. In the menu “Channel File Selection” select “Keep currently installed configuration files.”. Then the new Africa service will be added and can be started in addition to the old service. The user only has to change the target directories in \EUMETSAT\EUMETCast\cast-client-channels_afr-1.ini if needed.

On Linux systems:
A script will be provided to upgrade the Tellicast configuration to run the new service in parallel to the old one. After repointing of the antenna, the DVB reception parameters “frequency” and “symbolrate”must be changed. For “symbolrate” it is recommended to use “automatic”, if possible.

Summary of the configuration changes

In cast-client_....ini, the announcement channel has changed, set

[announcement_channel]
address=224.223.225.223:4711
name=TSL-AFR-1

In cast-client-channels…ini, make sure you have a default entry with wildcard, because the channel names have changed:

[channel]
name=*
target_directory=…
tmp_directory=…

What PC hardware change is needed to support the new EUMETCast Africa Service?

No PC hardware changes are necessary to continue receiving the current selection of products on the new service. Users who want to receive new services might want to upgrade their hardware to keep up with the growing data rates.

Data Rate Evolution on the new Service

The following diagram gives an indication of the currently anticipated future data rates on EUMETCast Africa.

 
  
 

Timeline

1 May 2018: Start of the new DVB-S2 EUMETCast Africa Service, on a pre-operational basis.

7 May 2018: Operational start of the new EUMETCast Africa Service

1 August 2018: End of current EUMETCast Africa Service

Last Updated:  Wednesday, 16 May 2018
 
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