SIST ETS 300 385:1998/A1:1998

SIST ETS 300 385:1998/A1:1998 is an ETSI amendment to the European Telecommunication Standard for electromagnetic compatibility (EMC) of digital fixed radio links and ancillary equipment with data rates at around 2 Mbit/s and above. It updates ETS 300 385 so that, together with ETS 300 197 or ETS 300 198 as appropriate, it can serve as a Harmonized EMC Standard referenced to Council Directive 89/336/EEC.

What does SIST ETS 300 385:1998/A1:1998 specify?

SIST ETS 300 385:1998/A1:1998 specifies the EMC requirements for fixed radio link equipment and associated ancillary equipment. The amendment’s role is to convert ETS 300 385 into a harmonised standard for use with the EMC Directive.

The document is organized as an amendment to the original ETS. It replaces the Foreword and adds a normative Annex A that identifies the parts of the ETS relevant to compliance with the essential requirements of Council Directive 89/336/EEC.

What are the key requirements of SIST ETS 300 385:1998/A1:1998?

SIST ETS 300 385:1998/A1:1998 points to two main groups of EMC testing: emission tests and immunity tests. In practice, a manufacturer or test laboratory uses the document to decide which ports, test conditions and disturbance types must be checked for fixed radio link equipment and its ancillary equipment.

Emission testing

Clause 8 covers test methods and limits for emission tests. It includes:

• enclosure tests for ancillary equipment tested in isolation
• DC power input/output port tests
• AC power input/output port tests

These tests matter because they check what the equipment emits onto its own housing and power connections, which affects interference with nearby radio and telecom equipment.

Immunity testing

Clause 9 covers test methods and limits for immunity tests. It includes:

• radio frequency electromagnetic field testing in the 80 MHz to 1 000 MHz range
• electrostatic discharge
• fast transient common mode testing
• RF common mode testing from 0,15 MHz to 80 MHz using current clamp injection
• voltage dips and interruptions
• surges in common and differential mode

These tests matter because they show whether the equipment keeps working when exposed to realistic electrical disturbances on site, on cables, and from the surrounding radio environment.

Link to the EMC Directive

Annex A identifies the subclauses relevant for compliance with the essential requirements of Council Directive 89/336/EEC. This helps users separate the EMC-critical parts of the standard from the rest and understand what is used for regulatory conformity work.

What terms does SIST ETS 300 385:1998/A1:1998 define?

• EMC - Electromagnetic compatibility, meaning the ability of equipment to function without causing or suffering unacceptable electromagnetic disturbance.
• ETS - European Telecommunication Standard, the type of standard being amended here.
• RES - Radio Equipment and Systems, the ETSI technical committee named in the foreword.
• Ancillary equipment - Supporting equipment used with the radio link system and covered by the EMC requirements.
• Harmonized EMC Standard - A standard intended to support conformity with the EMC Directive.
• Electrostatic discharge - A sudden transfer of static electricity that the equipment must withstand in immunity testing.
• Fast transient common mode - A disturbance applied to cables or ports to check immunity to rapid electrical transients.

Who uses SIST ETS 300 385:1998/A1:1998?

SIST ETS 300 385:1998/A1:1998 is used by radio equipment manufacturers, EMC test laboratories, conformity assessment bodies, and quality or compliance teams working on fixed radio links. It is also relevant to buyers and integrators who need evidence that digital fixed radio link equipment and its ancillary equipment are prepared for EMC testing and regulatory alignment.

What changed in SIST ETS 300 385:1998/A1:1998 from the previous edition?

SIST ETS 300 385:1998/A1:1998 amends ETS 300 385 by replacing the Foreword and adding a normative Annex A. The amendment states that the technical specifications relevant to the EMC Directive are listed in Annex A, and it updates the transposition dates for adoption, announcement, publication or endorsement, and withdrawal of conflicting national standards.

Which standards are used with SIST ETS 300 385:1998/A1:1998?

• ETS 300 197 - Used with this ETS, as appropriate, for the Harmonized EMC Standard arrangement mentioned in the foreword.
• ETS 300 198 - Used with this ETS, as appropriate, for the same harmonized EMC purpose.
• Council Directive 89/336/EEC - The EMC Directive referenced for harmonised compliance.
• ETS 300 385 - The base standard that this amendment modifies.

What does the SIST ETS 300 385:1998/A1:1998 document contain?

The document contains a revised foreword and one normative annex. Annex A includes a table that maps clauses and subclauses to the relevant articles of Council Directive 89/336/EEC, which is useful for compliance review and conformity work.

It also identifies the EMC test areas covered by the base standard: emission tests on the enclosure and on DC and AC power ports, and immunity tests for radiated fields, electrostatic discharge, fast transients, RF common-mode disturbances, voltage dips and interruptions, and surges.

For practical use, the document supports selection of the right EMC test plan for digital fixed radio links and their ancillary equipment. It tells the user where the Directive-related material is located and which test families are relevant to the regulatory objective.