SIST I-ETS 300 330:1999/A1:1999

• Abstract:

  Expansion of table 2 to avoid ambiguity. Correction of editorial errors.

• Status: Published
• Publication Date: 30-Sep-1999
• ICS: 33.060.01 - Radiocommunications in general
• ICS: 33.060.20 - Receiving and transmitting equipment
• Technical Committee: RES - Radio equipment and systems
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Oct-1999
• Due Date: 01-Oct-1999
• Completion Date: 01-Oct-1999
• Ref Project: ETSI I-ETS 300 330/A1 ed.1 (1997-01) - Radio Equipment and Systems (RES); Short Range Devices (SRDs); Technical characteristics and test methods for radio equipment in the frequency range 9 kHz to 25 MHz and inductive loop systems in the frequency range 9 kHz to 30 MHz

SIST I-ETS 300 330:1999/A1:1999 is a Slovenian standard published by SIST and aligned with ETSI amendment A1 to I-ETS 300 330. It covers short range devices (SRDs) and inductive loop systems in the frequency ranges named in the title, and it specifies updated technical characteristics and test methods for compliance work. In practice, it is used when checking H-field emission limits and the related measurement methods for radio equipment and loop systems.

What does SIST I-ETS 300 330:1999/A1:1999 specify?

SIST I-ETS 300 330:1999/A1:1999 is an amendment to I-ETS 300 330 (1994). Its purpose is to clarify Table 2 and correct editorial errors, while keeping the document focused on technical characteristics and test methods for SRDs and inductive loop systems.

The amendment text is organized around the revised limits and the figures that support those limits.

Part	What it covers
Table 2	H-field limits for loop coil antennas by frequency range and antenna area
Figure B.1	Tx carrier limits, radiated H-field at 10 m
Figure C.1	Tx carrier current for a large-sized loop
Figure D.1	H-field limit correction factor for electrically-generated field
Figure E.1	Spurious limits, radiated H-field at 10 m

The practical point for readers is that compliance work depends on using the right limit curve, the right antenna size category, and the matching measurement figure.

What are the key requirements of SIST I-ETS 300 330:1999/A1:1999?

H-field limits are set by antenna size and frequency

SIST I-ETS 300 330:1999/A1:1999 replaces Table 2 with a clearer set of H-field limits for loop coil antennas of different areas. The table separates larger, smaller, and intermediate loop coil antennas, and it uses frequency-dependent limit curves rather than one fixed value.

In practice, this means a lab or manufacturer must first classify the loop coil antenna by area, then apply the correct H-field limit across the operating frequency range. That choice affects design validation, pre-compliance testing, and final measurement reports.

The table includes special treatment for intermediate loop sizes

SIST I-ETS 300 330:1999/A1:1999 gives an area correction for loop coil antennas between the two main size classes. That avoids ambiguity when a design does not fit neatly into a single limit curve.

For users, this matters because antenna geometry can change the applicable limit. If the loop area sits between the size classes, the result must be adjusted rather than copied from the larger or smaller category.

The note preserves a minimum level in the indicated ISM bands

SIST I-ETS 300 330:1999/A1:1999 adds a note to Table 2 stating a minimum limit to protect existing services within the indicated bands. The note applies where the standard identifies ISM bands.

In practice, this means band-specific conditions can override the general trend of the curve. A product may meet the general limit but still need to satisfy the minimum stated for those bands.

Figure B.1 supports Tx carrier limit checking

SIST I-ETS 300 330:1999/A1:1999 replaces Figure B.1 with a plot of Tx carrier limits as radiated H-field at 10 m distance. This figure is used when checking the wanted transmission carrier against the allowed emission envelope.

For engineers and test labs, the figure shows how to compare measured field strength with the permitted limit at the stated distance.

Figure C.1 and Figure D.1 support loop-current and correction-factor work

SIST I-ETS 300 330:1999/A1:1999 replaces Figure C.1 with Tx carrier current for a large-sized loop, and Figure D.1 with the H-field limit correction factor for electrically-generated field. These figures link current-based and field-based assessment.

That matters when measurements are taken indirectly. The figures help a tester translate loop current or apply the right correction before judging compliance.

Figure E.1 covers spurious emissions

SIST I-ETS 300 330:1999/A1:1999 replaces Figure E.1 with spurious limits, again given as radiated H-field at 10 m distance. This separates unwanted emissions from the main carrier limits.

In practice, the document therefore supports both wanted-signal testing and unwanted-emission testing, which are not judged in the same way.

What terms does SIST I-ETS 300 330:1999/A1:1999 define?

• Short range devices (SRDs) - radio equipment intended for short-distance operation, which is the product family covered by the standard.
• Inductive loop systems - systems that use a loop to create a magnetic field for communication or related radio functions.
• H-field - the magnetic field quantity used in the limit table and figures to express emission strength.
• Loop coil antenna - the antenna type used as the basis for the size-based limit classes in Table 2.
• Tx carrier - the transmitted carrier that is checked against the radiated H-field limits.
• Spurious limits - limits that apply to unwanted emissions rather than the main carrier.
• ISM bands - the frequency bands identified in the table note for special minimum-limit treatment.

Who uses SIST I-ETS 300 330:1999/A1:1999?

SIST I-ETS 300 330:1999/A1:1999 is used by radio equipment manufacturers, test laboratories, compliance engineers, and quality teams working on SRDs and inductive loop systems. It is also relevant for buyers or technical reviewers who need to confirm how a product will be tested.

These users apply it when designing antennas, setting up H-field measurements, checking carrier and spurious emissions, and documenting conformity for radio equipment in the stated frequency ranges.

What changed in SIST I-ETS 300 330:1999/A1:1999 from the previous edition?

SIST I-ETS 300 330:1999/A1:1999 is Amendment A1 to the 1994 edition of I-ETS 300 330. The amendment states two changes: it expands Table 2 to avoid ambiguity, and it corrects editorial errors.

Which standards are used with SIST I-ETS 300 330:1999/A1:1999?

This amendment is read together with I-ETS 300 330 (1994), which it modifies. The amendment updates that parent document rather than replacing it in full.

What does the SIST I-ETS 300 330:1999/A1:1999 document contain?

The document contains a foreword, the amendment instructions, and a history block. The technical content is concentrated in the replacement of Table 2 and the replacement of Figures B.1, C.1, D.1, and E.1.

For a user, the important part is the updated limit curves and measurement plots used in radio testing and compliance documentation.

SLOVENSKI STANDARD
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Radio Equipment and Systems (RES); Short Range Devices (SRDs); Technical
characteristics and test methods for radio equipment in the frequency range 9 kHz to 25
MHz and inductive loop systems in the frequency range 9 kHz to 30 MHz
Ta slovenski standard je istoveten z: I-ETS 300 330/A1 Edition 1
ICS:
33.060.01 Radijske komunikacije na Radiocommunications in
splošno general
33.060.20 Sprejemna in oddajna Receiving and transmitting
oprema equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

I-ETS 300 330
AMENDMENT A1
January 1997
Source: ETSI TC-RES Reference: RI/RES-080110
ICS: 33.060.20, 33.060.50
Key words: Radio, SRD, testing
This draft amendment A1, will modify
the European Telecommunication Standard I-ETS 300 330 (1994)
Radio Equipment and Systems (RES);
Short Range Devices (SRDs);
Technical characteristics and test methods
for radio equipment in the frequency range 9 kHz to 25 MHz
and inductive loop systems in the frequency range
9 kHz to 30 MHz
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: [e-mail]
Tel.: [phone] - Fax: [phone]
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1997. All rights reserved.

Page 2
I-ETS 300 330: December 1994/A1: January 1997
Whilst every care has been taken in the preparation and publication of this document, errors in content,
typographical or otherwise, may occur. If you have comments concerning its accuracy, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.

Page 3
I-ETS 300 330: December 1994/A1: January 1997
Foreword
This amendment to I-ETS 300 330 (1994) has been produced by the Radio Equipment and Systems
(RES) Technical Committee of the European Telecommunications Standards Institute (ETSI).
Transposition dates
Date of adoption 20 December 1996
Date of latest announcement of this ETS (doa): 30 April 1997
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 31 October 1997
Date of withdrawal of any conflicting National Standard (dow): 31 October 1997
...