Transcript Radiosonde Transmitter Standardization in Europe Ilkka Ikonen Vaisala Oyj Geneva 2006-03-20 – WMO Workshop on Frequencies.

Radiosonde Transmitter
Standardization in Europe
Ilkka Ikonen
Vaisala Oyj
Geneva 2006-03-20 – WMO Workshop on Frequencies
Legal issues
• Directive 1999/5/EC of the European Parliament and of the Council
of 9 March 1999 on Radio Equipment and Telecommunications
Terminal Equipment and the mutual recognition of their conformity
(R&TTE Directive)
• Apparatus put into service in the Member States (of EU) shall be
submitted into the conformity assessment (of the essential
requirements in the Article 3)
• Manufacturer has the responsibility to show that apparatus comply
with this directive and are properly marked
• One method to show the conformity is harmonized standards.
Article 3, Essential requirements
R&TTE Directive 1999/5, of the Article 3, point2 reads:
2. In addition, radio equipment shall be so constructed that it
effectively uses the spectrum allocated to terrestrial/space
radio communications and orbital resources so to avoid
harmful interference
This is in accordance with ITU and WMO incentives to improve
spectral usage of radiosondes.
Practical Issues
• One method to show the conformity with the RTT&E directive is
a harmonized standard.
• Apparatus meeting the appropriate standards shall bear CE
marking.
• Only CE marked apparatus are legal in EU.
• ETSI gives a public forum to perform the standardization task in
Europe – to create an EN (European Norm).
ETSI (European Telecommunications Standard Institute)
• ETSI is officially responsible for standardization of Information
and Communication Technologies (ICT) in Europe.
• ETSI is officially recognized by the European Commission and
the EFTA secretariat.
• ETSI ensures that harmonised standards are drafted in a way,
which allows unambiguous interpretation and can be
appropriately updated when needed.
Why one needs specific radiosonde
transmitter standard ?
• To comply with the R&TTE Directive 1999/5, and to show the
conformity of the Article 3
• To avoid the application of the SRD standard EN300 220 SRD on
radiosondes:
– SRD standard does not fit to radiosondes
– There have been continuos changes to the EN300 220
• To take into account the radiosonde special features:
– High dynamic range in the reception power,
– Wide temperature range,
– Radiosonde is a disposable product.
Standardization process
• All interested parties are welcome to participate task groups
(ERM – TG xx) within ETSI to prepare standards
(ERM = Electromagnetic compatibility and Radio spectrum Matters)
– TG25 for 1680 MHz
– TG28 for 400 MHz
• TGs report to ERM that accept the work done, and sends it to
the public inquiry and voting.
• After the ETSI process, standards will be issued to the
community in the EU official publication (harmonized).
• Accredited notified body issues CE marking.
Standardization process - history
Standardization of the 400 MHz transmitter
– ETSI working group ERM-TG28 – SRD devices
– Work started early 2000
– Accepted by ERM early 2003
– Standard is EN 302 054
Standardization of the 1680 MHz transmitter
– ETSI working group ERM-TG25 - Aviation
– Work started early 2004
– Accepted to public inquiry – 2006-02-22
– Standard is EN 302 454 – estimated to be harmonized by
late 2006
•
ETSI EN Approval - Notification of new PE 20060623 for TB Officials & Work Item Rapporteurs
•
Dear Madam, dear Sir,
•
•
Please note that the above mentioned Public Enquiry containing the following document(s) is now open.
Please check the bottom of this email for instructions.
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
-----------------------------------------------------------------------------------------ETSI EN 302 454-1 V1.1.1 (2006-02) (35 paper pages/0 soft pages)
Public Enquiry: PE 20060623 Start: 2006-02-22 End: 2006-06-23
Technical Body: TG ERM TG25
ERM Aeronautical
Title:
Electromagnetic compatibility and Radio spectrum Matters (ERM);
Meteorological Aids (Met Aids);
Radiosondes to be used in the 1 668,4 MHz to 1 690 MHz frequency range;
Part 1: Technical characteristics and test methods
-----------------------------------------------------------------------------------------ETSI EN 302 454-2 V1.1.1 (2006-02) (14 paper pages/0 soft pages)
Public Enquiry: PE 20060623 Start: 2006-02-22 End: 2006-06-23
Technical Body: TG ERM TG25
ERM Aeronautical
Title:
Electromagnetic compatibility and Radio spectrum Matters (ERM);
Meteorological Aids (Met Aids);
Radiosondes to be used in the 1 668,4 MHz to 1 690 MHz frequency range;
Part 2: Harmonized EN covering essential requirements under article 3.2 of the R&TTE Direc
------------------------------------------------------------------------------------------
•
•
To download any of the above items in Word or PDF Format, please go to :
http://webapp.etsi.org/ENApproval/Home.asp?T=PE&S=OPEN&N=20060623&pTB_ID_LIST=581
•
•
For more information/help on accessing or using the Voting System, you can contact us by sending an e-mail to:
mailto:[email protected]
•
•
All Publications can also be found under:
http://pda.etsi.org/PDA/
•
Best Regards,
•
•
The Editing Document Management Team
ETSI - Standards Production Area
What do the standards cover ?
• Essential is that different make radiosondes are tested in the
same way and same criteria are applied for acceptance.
•
Transmitter standard covers:
– Test conditions
– Equipment used in testing
– Measurement uncertainties
– Methods of measurement
– Limits and values for essential transmitter properties
What do the standard not cover ?
• Radiosonde transmitter standards cover only test methods and
spectrum usage issues.
• Excluded from transmitter standardization are:
– Quality of the product
– Performance issues (other than spectrum related)
– Modulation (but the standard covers digital modulation only)
– Data transfer speed
– Data contents and format
– Receiving system properties and performance
General Issues
• Radiofrequencies are limited resources, and shall be divided fairly
among the users and used respecting others’ applications
• Harmful interference to others shall be avoided
• The European R&TTE Directive 1999/5 urges the “good use” of the
radiofrequencies
– The standards are commonly agreed upon way to meet the need
of the “good use”
• To meet the laws and regulations make meteorological community
a fair and respected player in the field
– Radiosondes are not the only need of the meteorology
– Meteorology respects others and count on others’ respect in turn
THANK YOU FOR YOUR ATTENTION