Technical Bulletins

EUMETCast Europe Expansion to 2nd Transponder

Because the data volume on EUMETCast Europe has almost reached capacity limits of the current transponder, a second transponder has been added to the EUMETCast Europe Service.

The capacity limits of the current transponder are 27 Mbps Basic Service and 34 Mbps High Volume Service; adding the second transponder will allow further expansion of data dissemination. The second transponder is already running in test mode.

This page provides details to help users prepare reception systems and get access to data on the second transponder, in readiness for when operational dissemination starts.

Transponder Parameters

Currently, only half of the C10 transponder is available for EUMETSAT. The table below shows the downlink parameters valid until 1 July 2017.

Ku-band Transponder EUTELSAT 10A (10° E), Europe
PARAMETER  
Name EUTELSAT 10A
Transponder C10
Down Link Frequency 11378.500 MHz
Symbol Rate, until 1 Jul 2017 15000 kS/s
Polarisation Horizontal
Roll-Off 5%
Transmission Standard DVB-S2, CCM mode
MODCOD — High Volume Service 2 8PSK5/6
MPE transport stream (TS) ISI=1
max 33 Mbps info bit rate (at TS level)
max 29 Mbps IP data rate

From 1 July 2017 the full transponder will become available for EUMETSAT, the transmission parameters will then change. An announcement will be made in due course.

Antenna size requirements

The new transponder will carry a second High Volume Service, and the antenna size requirements are exactly the same as for the High Volume Service on the first transponder, see Antenna Sizes and Availability for the Basic Service (8PSK3/5) and the High Volume Service (16APSK2/3).

What hardware changes are needed to support the second transponder?

The second transponder transmits on the same polarisation (horizontal) and same frequency band (low) as the first transponder. Therefore, the same antenna and LNB can be used to receive both transponders simultaneously, provided the antenna is large enough for the High Volume Service.

The minimum required hardware changes are:

  1. Insertion of an RF signal splitter between the existing DVB device and the antenna cable.
  2. Alternatively to point 1, a dual output LNB can be used, both ports must support low band and horizontal polarisation.
  3. Addition of a separate DVB receiver router, this includes an addition of a second network interface to the reception PC, if not already present.

Figure 1, below, shows the minimum required hardware changes (more solutions are described at the bottom):

EUMETCast 2nd transponder Minimum Hardware Upgrade
Figure 1: Minimum required hardware

What software changes are needed to support the second transponder?

Use the latest Tellicast versions available from EUMETSAT. These versions are distributed via EUMETCast twice per day as pre-releases. In early 2017 upgraded EUMETCast packages will also be available as DVDs:

  • V2.14.1 rpm or debian or tar.gz for Linux
  • V 2.14.2_5 installer for Windows

The configuration changes are described in the Tellicast installation guides.

What PC hardware change is needed to support the second transponder?

Possibly, a PC RAM upgrade will be needed. If the user wants to receive all instances on the same W/S, a high end W/S with a 16 Gb RAM is strongly recommended.

How can I test reception?

On the second transponder dummy files are disseminated with arbitrary content in order to make full use of the bandwidth. Please contact our User Service Helpdesk and ask to register for '2nd transponder HVS-2 test data'. Then configure your system for the second transponder following the description on this page.

What data will go on the second transponder?

Initially, only new services will be added to the second transponder, starting with GOES-R data. In future it may be possible that the data flows could be re-arranged between transponder 1 and transponder 2. Announcements for these changes will be made accordingly in due course.

Timeline

  • 19 January 2017: Start of test service. Users can subscribe to test data.
  • Q1 2017: Start of operational service with dissemination of GOES-R data.

RECOMMENDED DVB-S2 DEVICES

All recommended DVB-S2 devices for EUMETCast Europe are also are compatible with the service on the second transponder, for more information see the Reception Station Set-Up page.

Alternative high availability solutions

Figure 2, below shows the hardware upgrade needed if users are keeping their existing system.

EUMETCast 2nd transponder Hardware Upgrade
Figure 2: Hardware upgrade keeping existing system

Figure 3, below, shows the high availability, fully redundant solution.

EUMETCast 2nd transponder Hardware Upgrade
Figure 3: High Availability, fully redundant solution

For more information, contact our User Service Helpdesk.

Last Updated:  Friday, 03 March 2017