SIST EN 303 980 V1.2.1:2021

HARMONISED EUROPEAN STANDARD
Satellite Earth Stations and Systems (SES);
Fixed and in-motion Earth Stations communicating with
non-geostationary satellite systems (NEST)
in the 11 GHz to 14 GHz frequency bands;
Harmonised Standard for access to radio spectrum

2 ETSI EN 303 980 V1.2.1 (2021-05)

Reference
REN/SES-00456
Keywords
broadband, earth station, mobile, regulation,
satellite
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2021.
All rights reserved.
ETSI
3 ETSI EN 303 980 V1.2.1 (2021-05)
Contents
Intellectual Property Rights . 7
Foreword . 7
Modal verbs terminology . 8
Introduction . 8
1 Scope . 9
2 References . 10
2.1 Normative references . 10
2.2 Informative references . 10
3 Definition of terms, symbols and abbreviations . 11
3.1 Terms . 11
3.2 Symbols . 12
3.3 Abbreviations . 12
4 Technical requirements specifications . 13
4.1 General . 13
4.1.0 Objective . 13
4.1.1 Environmental profile . 14
4.1.2 Void . 14
4.1.3 Operating configurations . 14
4.1.4 Presentation of equipment for testing purposes . 14
4.1.5 Choice of model for testing . 14
4.1.6 Operation of multiple NEST on a single frequency . 15
4.2 Conformance requirements . 15
4.2.1 Void . 15
4.2.2 Antenna beam pointing . 15
4.2.2.1 Pointing accuracy . 15
4.2.2.1.1 Purpose . 15
4.2.2.1.2 Antenna Beam Pointing error . 15
4.2.2.2 Pointing error detection . 15
4.2.2.2.1 Purpose . 15
4.2.2.2.2 Pointing error detection specification . 15
4.2.2.3 Conformance tests . 15
4.2.3 Off-axis spurious radiation . 16
4.2.3.1 Justification . 16
4.2.3.2 Specification. 16
4.2.3.3 Conformance tests . 17
4.2.4 On-axis spurious radiation . 17
4.2.4.1 Justification . 17
4.2.4.2 Specification. 17
4.2.4.2.1 "Carrier-on" radio state . 17
4.2.4.2.2 "Carrier-off" and "Emissions disabled" radio states . 18
4.2.4.3 Conformance tests . 18
4.2.5 Carrier suppression . 18
4.2.5.1 Justification . 18
4.2.5.2 Specification. 18
4.2.5.3 Conformance tests . 18
4.2.6 Cessation of emissions . 18
4.2.6.1 Justification . 18
4.2.6.2 Specification. 18
4.2.6.2.1 Specification 1: Mode of cessation of emissions . 18
4.2.6.2.2 Specification 2: Conditions under which the NEST shall cease emissions . 19
4.2.6.2.3 Specification 3: Cessation of emissions . 19
4.2.6.2.4 Specification 4: Fault conditions . 19
4.2.6.3 Conformance tests . 20
4.2.7 Identification of the NEST and its location . 20
ETSI
4 ETSI EN 303 980 V1.2.1 (2021-05)
4.2.7.1 Justification . 20
4.2.7.2 Specification. 20
4.2.7.3 Conformance tests . 20
4.2.8 Control and Monitoring Functions (CMFs) . 20
4.2.8.1 General - Finite State Machine Model . 20
4.2.8.2 Processor monitoring . 22
4.2.8.2.1 Justification . 22
4.2.8.2.2 Specification . 23
4.2.8.2.3 Conformance tests . 23
4.2.8.3 Transmit subsystem monitoring . 23
4.2.8.3.1 Justification . 23
4.2.8.3.2 Specification . 23
4.2.8.3.3 Conformance tests . 23
4.2.8.4 Power-on/Reset . 23
4.2.8.4.1 Justification . 23
4.2.8.4.2 Specification . 23
4.2.8.4.3 Conformance tests . 23
4.2.8.5 Control Channel (CC) and Response Channel (RC) . 24
4.2.8.5.1 Justification . 24
4.2.8.5.2 Specification . 24
4.2.8.5.3 Conformance tests . 24
4.2.8.6 Network control commands . 25
4.2.8.6.1 Justification . 25
4.2.8.6.2 Specification . 25
4.2.8.6.3 Conformance tests . 25
4.2.8.7 Initial burst transmission . 25
4.2.8.7.1 Justification . 25
4.2.8.7.2 Specification . 25
4.2.8.7.3 Conformance tests . 26
4.2.8.8 Inhibition of transmissions . 26
4.2.8.8.1 Justification . 26
4.2.8.8.2 Specification . 26
4.2.8.8.3 Conformance tests . 26
4.2.9 Receive antenna off-axis gain pattern . 26
4.2.9.1 Justification . 26
4.2.9.2 Specification. 26
4.2.9.3 Conformance tests . 27
4.2.10 Blocking performance . 27
4.2.10.1 Justification . 27
4.2.10.2 Specification. 27
4.2.10.3 Conformance tests . 27
4.2.11 Adjacent Signal Selectivity . 28
4.2.11.1 Justification . 28
4.2.11.2 Specification. 28
4.2.11.3 Conformance tests . 28
5 Testing for compliance with technical requirements . 28
5.1 Environmental conditions for testing . 28
5.2 Ancilliary Equipment . 28
5.3 Nominated Bandwidth . 29
5.4 Essential radio test suites . 29
6 Test methods for all aspects of the NEST . 29
6.1 General . 29
6.1.1 General requirements . 29
6.2 Off-axis spurious radiation . 29
6.2.1 General . 29
6.2.2 Test method . 30
6.2.2.1 General . 30
6.2.2.2 Multi-carrier operation . 30
6.2.3 Measurements up to 1 000 MHz . 30
6.2.3.1 Test site . 30
ETSI
5 ETSI EN 303 980 V1.2.1 (2021-05)
6.2.3.2 Void. 31
6.2.3.3 Procedure . 31
6.2.4 Measurements above 1 000 MHz . 31
6.2.4.1 General . 31
6.2.4.2 Identification of the significant frequencies of spurious radiation . 31
6.2.4.2.1 Test site. 31
6.2.4.2.2 Procedure . 32
6.2.4.3 Measurement of radiated power levels of identified spurious radiation . 32
6.2.4.3.1 Test site. 32
6.2.4.3.2 Procedure . 32
6.2.4.4 Measurement of conducted spurious radiation at the antenna flange . 33
6.2.4.4.1 Test site. 33
6.2.4.4.2 Procedure . 34
6.3 On-axis spurious radiation . 34
6.3.1 Test method . 34
6.3.1.1 General . 34
6.3.1.2 Test site . 34
6.3.1.3 Method of measurement . 34
6.3.1.3.1 General . 34
6.3.1.3.2 Method of measurement at the antenna flange . 35
6.3.1.3.3 Method of measurement for an EUT with antenna . 37
6.4 Void . 38
6.5 Carrier suppression . 38
6.5.1 General . 38
6.5.2 Test method . 38
6.6 Antenna beam pointing . 38
6.6.1 General . 38
6.6.2 Test methods . 39
6.7 Cessation of emissions of the NEST . 40
6.7.1 General . 40
6.7.2 Test Method . 40
6.7.2.1 Required documentation . 40
6.7.2.2 Cessation of emissions from the "Transmission enabled" state . 40
6.7.2.3 Cessation of emission from the "Transmission disabled" state . 40
6.7.2.4 Cessation of emission from the "Initial Phase" state . 41
6.7.2.4.1 EUTs transmitting initial bursts . 41
6.7.2.4.2 EUTs not transmitting initial bursts . 41
6.7.2.5 "Single action" means of cessation of emissions. 41
6.7.2.6 Fault conditions . 42
6.8 Identification of NEST and location determination . 42
6.8.1 Test arrangement . 42
6.8.2 Test method . 42
6.9 Control and monitoring functions . 43
6.9.1 General . 43
6.9.2 Test arrangement . 43
6.9.3 Processor monitoring-Test method . 43
6.9.4 Transmit subsystem monitoring-Test method . 43
6.9.5 Power-on/Reset-Test method . 43
6.9.6 Control Channel and Response Channel - Test method . 44
6.9.7 Network Control commands - Test method . 45
6.9.8 Initial burst transmission - Test method . 46
6.9.9 Inhibition of transmission - Test method . 46
6.10 Antenna off-axis gain pattern . 46
6.10.1 Test Method . 46
6.10.1.1 Test site . 46
6.10.1.2 Method of measurement for EUT antenna with linear polarization . 47
6.10.1.3 Method of measurement for antennas with circular polarization . 47
6.11 Blocking performance . 48
6.11.0 General . 48
6.11.1 Test method . 48
6.12 Adjacent Signal Selectivity . 48
6.12.0 General . 48
ETSI
6 ETSI EN 303 980 V1.2.1 (2021-05)
6.12.1 Test method . 49
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 50
Annex B (normative): Radiated measurement . 52
B.1 General . 52
B.2 Free Field Test sites and general arrangements for measurements involving the use of radiated
fields . 52
B.2.1 Anechoic Chamber . 52
B.2.2 Anechoic Chamber with a conductive ground plane . 53
B.2.3 Open Area Test Site (OATS) . 55
B.2.4 Minimum requirements for free field test sites. 56
B.2.4.1 Measurements above 18 GHz . 56
B.2.4.2 Test antenna . 56
B.2.4.3 Substitution antenna . 57
B.2.4.4 Measuring antenna . 57
B.2.5 Guidance on the use of free field radiation test sites . 57
B.2.5.1 General . 57
B.2.5.2 Verification of the test site . 57
B.2.5.3 Preparation of the EUT . 57
B.2.5.4 Power supplies to the EUT . 57
B.2.5.5 Range length . 58
B.2.5.6 Site preparation . 58
B.2.5.7 Coupling of signals . 59
B.2.5.8 Standard test methods . 59
B.2.5.8.0 General . 59
B.2.5.8.1 Calibrated setup . 59
B.2.5.8.2 Substitution method . 59
B.3 Guidance on the use of indirect far field test sites . 60
B.3.1 General . 60
B.3.2 Far-field criteria . 61
B.3.3 Calibration Measurement Procedure . 62
B.4 Guidance on the use of near-field-to-far-field transform test sites . 63
B.4.1 General . 63
B.4.2 Calibration Measurement Procedure . 64
Annex C (normative): Conducted measurements . 66
Annex D (informative): General Requirements for RF Cables . 67
Annex E (informative): RF Waveguides . 68
Annex F (informative): Measurement Equipment . 69
F.1 Special considerations for the interpretation of measurement results . 69
F.2 Maximum measurement uncertainty . 69
F.3 Measuring receiver . 70
F.4 Measurement results . 71
Annex G (informative): Applicability of parameters given in ETSI EG 203 336 . 72
Annex H (informative): Bibliography . 74
Annex I (informative): Change history . 75
History . 76

ETSI
7 ETSI EN 303 980 V1.2.1 (2021-05)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be
found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to
ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the
ETSI Web server (https://ipr.etsi.org/).
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its

Members. 3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and of the 3GPP
Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of the ®
oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Foreword
This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Satellite Earth Stations
and Systems (SES).
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.1] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.6].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated
EFTA regulations.
National transposition dates
Date of adoption of this EN: 6 May 2021
Date of latest announcement of this EN (doa): 31 August 2021
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 28 February 2022
Date of withdrawal of any conflicting National Standard (dow): 28 February 2023

ETSI
8 ETSI EN 303 980 V1.2.1 (2021-05)
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
Introduction
The present document is part of a set of standards developed by ETSI and is designed to fit in a modular structure to
cover all radio and telecommunications terminal equipment within the scope of the RE Directive [i.6]. The modular
structure is shown in ETSI EG 201 399 [i.2].
The present document is largely based on ETSI EN 303 979 [i.4], for ESOMPs operating with NGSO satellites.
The present document may also be applicable to the frequency band 14,0 GHz to 14,50 GHz (Earth-to-space) and
10,70 GHz to 12,75 GHz (space-to-Earth) subject to national regulation.
Annex A (informative) provides HS Requirements specifications.
Annex B (normative) describes methods of taking radiated measurements.
Annex C (normative) describes methods of taking conducted measurements.
Annex D (informative) describes requirements for RF measurement cables.
Annex E (informative) describes use of RF waveguides.
Annex F (informative) describes measurement equipment.
Annex G (informative) describes the applicability of parameters in ETSI EG 203 336 [i.7].
Annex H (informative) Bibliography covers other supplementary information.
Recital 10 of Directive 2014/53/EU [i.6] states that "in order to ensure that radio equipment uses the radio spectrum
effectively and supports the efficient use of radio spectrum, radio equipment should be constructed so that: in the case
of a transmitter, when the transmitter is properly installed, maintained and used for its intended purpose it generates
radio waves emissions that do not create harmful interference, while unwanted radio waves emissions generated by the
transmitter (e.g. in adjacent channels) with a potential negative impact on the goals of radio spectrum policy should be
limited to such a level that, according to the state of the art, harmful interference is avoided; and, in the case of a
receiver, it has a level of performance that allows it to operate as intended and protects it against the risk of harmful
interference, in particular from shared or adjacent channels, and, in so doing, supports improvements in the efficient
use of shared or adjacent channels".
Recital 11 of Directive 2014/53/EU [i.6] states that "although receivers do not themselves cause harmful interference,
reception capabilities are an increasingly important factor in ensuring the efficient use of radio spectrum by way of an
increased resilience of receivers against harmful interference and unwanted signals on the basis of the relevant
essential requirements of Union harmonisation legislation".
As a consequence, the present document includes both transmitting and receiving parameters aiming to maximize the
efficient use of radio spectrum.
ETSI
9 ETSI EN 303 980 V1.2.1 (2021-05)
...

SLOVENSKI STANDARD
01-julij-2021
Satelitske zemeljske postaje in sistemi (SES) - Nepremične in premične zemeljske
postaje, ki komunicirajo z negeostacionarnimi satelitskimi sistemi (NEST) v
frekvenčnih pasovih od 11 GHz do 14 GHz - Harmonizirani standard za dostop do
radijskega spektra
Satellite Earth Stations and Systems (SES) - Fixed and in-motion Earth Stations
communicating with non-geostationary satellite systems (NEST) in the 11 GHz to 14 GHz
frequency bands - Harmonised Standard for access to radio spectrum
Ta slovenski standard je istoveten z: ETSI EN 303 980 V1.2.1 (2021-05)
ICS:
33.060.30 Radiorelejni in fiksni satelitski Radio relay and fixed satellite
komunikacijski sistemi communications systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

HARMONISED EUROPEAN STANDARD
Satellite Earth Stations and Systems (SES);
Fixed and in-motion Earth Stations communicating with
non-geostationary satellite systems (NEST)
in the 11 GHz to 14 GHz frequency bands;
Harmonised Standard for access to radio spectrum

2 ETSI EN 303 980 V1.2.1 (2021-05)

Reference
REN/SES-00456
Keywords
broadband, earth station, mobile, regulation,
satellite
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00  Fax: +33 4 93 65 47 16

Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871

Important notice
The present document can be downloaded from:
http://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.

Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.

© ETSI 2021.
All rights reserved.
ETSI
3 ETSI EN 303 980 V1.2.1 (2021-05)
Contents
Intellectual Property Rights . 7
Foreword . 7
Modal verbs terminology . 8
Introduction . 8
1 Scope . 9
2 References . 10
2.1 Normative references . 10
2.2 Informative references . 10
3 Definition of terms, symbols and abbreviations . 11
3.1 Terms . 11
3.2 Symbols . 12
3.3 Abbreviations . 12
4 Technical requirements specifications . 13
4.1 General . 13
4.1.0 Objective . 13
4.1.1 Environmental profile . 14
4.1.2 Void . 14
4.1.3 Operating configurations . 14
4.1.4 Presentation of equipment for testing purposes . 14
4.1.5 Choice of model for testing . 14
4.1.6 Operation of multiple NEST on a single frequency . 15
4.2 Conformance requirements . 15
4.2.1 Void . 15
4.2.2 Antenna beam pointing . 15
4.2.2.1 Pointing accuracy . 15
4.2.2.1.1 Purpose . 15
4.2.2.1.2 Antenna Beam Pointing error . 15
4.2.2.2 Pointing error detection . 15
4.2.2.2.1 Purpose . 15
4.2.2.2.2 Pointing error detection specification . 15
4.2.2.3 Conformance tests . 15
4.2.3 Off-axis spurious radiation . 16
4.2.3.1 Justification . 16
4.2.3.2 Specification. 16
4.2.3.3 Conformance tests . 17
4.2.4 On-axis spurious radiation . 17
4.2.4.1 Justification . 17
4.2.4.2 Specification. 17
4.2.4.2.1 "Carrier-on" radio state . 17
4.2.4.2.2 "Carrier-off" and "Emissions disabled" radio states . 18
4.2.4.3 Conformance tests . 18
4.2.5 Carrier suppression . 18
4.2.5.1 Justification . 18
4.2.5.2 Specification. 18
4.2.5.3 Conformance tests . 18
4.2.6 Cessation of emissions . 18
4.2.6.1 Justification . 18
4.2.6.2 Specification. 18
4.2.6.2.1 Specification 1: Mode of cessation of emissions . 18
4.2.6.2.2 Specification 2: Conditions under which the NEST shall cease emissions . 19
4.2.6.2.3 Specification 3: Cessation of emissions . 19
4.2.6.2.4 Specification 4: Fault conditions . 19
4.2.6.3 Conformance tests . 20
4.2.7 Identification of the NEST and its location . 20
ETSI
4 ETSI EN 303 980 V1.2.1 (2021-05)
4.2.7.1 Justification . 20
4.2.7.2 Specification. 20
4.2.7.3 Conformance tests . 20
4.2.8 Control and Monitoring Functions (CMFs) . 20
4.2.8.1 General - Finite State Machine Model . 20
4.2.8.2 Processor monitoring . 22
4.2.8.2.1 Justification . 22
4.2.8.2.2 Specification . 23
4.2.8.2.3 Conformance tests . 23
4.2.8.3 Transmit subsystem monitoring . 23
4.2.8.3.1 Justification . 23
4.2.8.3.2 Specification . 23
4.2.8.3.3 Conformance tests . 23
4.2.8.4 Power-on/Reset . 23
4.2.8.4.1 Justification . 23
4.2.8.4.2 Specification . 23
4.2.8.4.3 Conformance tests . 23
4.2.8.5 Control Channel (CC) and Response Channel (RC) . 24
4.2.8.5.1 Justification . 24
4.2.8.5.2 Specification . 24
4.2.8.5.3 Conformance tests . 24
4.2.8.6 Network control commands . 25
4.2.8.6.1 Justification . 25
4.2.8.6.2 Specification . 25
4.2.8.6.3 Conformance tests . 25
4.2.8.7 Initial burst transmission . 25
4.2.8.7.1 Justification . 25
4.2.8.7.2 Specification . 25
4.2.8.7.3 Conformance tests . 26
4.2.8.8 Inhibition of transmissions . 26
4.2.8.8.1 Justification . 26
4.2.8.8.2 Specification . 26
4.2.8.8.3 Conformance tests . 26
4.2.9 Receive antenna off-axis gain pattern . 26
4.2.9.1 Justification . 26
4.2.9.2 Specification. 26
4.2.9.3 Conformance tests . 27
4.2.10 Blocking performance . 27
4.2.10.1 Justification . 27
4.2.10.2 Specification. 27
4.2.10.3 Conformance tests . 27
4.2.11 Adjacent Signal Selectivity . 28
4.2.11.1 Justification . 28
4.2.11.2 Specification. 28
4.2.11.3 Conformance tests . 28
5 Testing for compliance with technical requirements . 28
5.1 Environmental conditions for testing . 28
5.2 Ancilliary Equipment . 28
5.3 Nominated Bandwidth . 29
5.4 Essential radio test suites . 29
6 Test methods for all aspects of the NEST . 29
6.1 General . 29
6.1.1 General requirements . 29
6.2 Off-axis spurious radiation . 29
6.2.1 General . 29
6.2.2 Test method . 30
6.2.2.1 General . 30
6.2.2.2 Multi-carrier operation . 30
6.2.3 Measurements up to 1 000 MHz . 30
6.2.3.1 Test site . 30
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5 ETSI EN 303 980 V1.2.1 (2021-05)
6.2.3.2 Void. 31
6.2.3.3 Procedure . 31
6.2.4 Measurements above 1 000 MHz . 31
6.2.4.1 General . 31
6.2.4.2 Identification of the significant frequencies of spurious radiation . 31
6.2.4.2.1 Test site. 31
6.2.4.2.2 Procedure . 32
6.2.4.3 Measurement of radiated power levels of identified spurious radiation . 32
6.2.4.3.1 Test site. 32
6.2.4.3.2 Procedure . 32
6.2.4.4 Measurement of conducted spurious radiation at the antenna flange . 33
6.2.4.4.1 Test site. 33
6.2.4.4.2 Procedure . 34
6.3 On-axis spurious radiation . 34
6.3.1 Test method . 34
6.3.1.1 General . 34
6.3.1.2 Test site . 34
6.3.1.3 Method of measurement . 34
6.3.1.3.1 General . 34
6.3.1.3.2 Method of measurement at the antenna flange . 35
6.3.1.3.3 Method of measurement for an EUT with antenna . 37
6.4 Void . 38
6.5 Carrier suppression . 38
6.5.1 General . 38
6.5.2 Test method . 38
6.6 Antenna beam pointing . 38
6.6.1 General . 38
6.6.2 Test methods . 39
6.7 Cessation of emissions of the NEST . 40
6.7.1 General . 40
6.7.2 Test Method . 40
6.7.2.1 Required documentation . 40
6.7.2.2 Cessation of emissions from the "Transmission enabled" state . 40
6.7.2.3 Cessation of emission from the "Transmission disabled" state . 40
6.7.2.4 Cessation of emission from the "Initial Phase" state . 41
6.7.2.4.1 EUTs transmitting initial bursts . 41
6.7.2.4.2 EUTs not transmitting initial bursts . 41
6.7.2.5 "Single action" means of cessation of emissions. 41
6.7.2.6 Fault conditions . 42
6.8 Identification of NEST and location determination . 42
6.8.1 Test arrangement . 42
6.8.2 Test method . 42
6.9 Control and monitoring functions . 43
6.9.1 General . 43
6.9.2 Test arrangement . 43
6.9.3 Processor monitoring-Test method . 43
6.9.4 Transmit subsystem monitoring-Test method . 43
6.9.5 Power-on/Reset-Test method . 43
6.9.6 Control Channel and Response Channel - Test method . 44
6.9.7 Network Control commands - Test method . 45
6.9.8 Initial burst transmission - Test method . 46
6.9.9 Inhibition of transmission - Test method . 46
6.10 Antenna off-axis gain pattern . 46
6.10.1 Test Method . 46
6.10.1.1 Test site . 46
6.10.1.2 Method of measurement for EUT antenna with linear polarization . 47
6.10.1.3 Method of measurement for antennas with circular polarization . 47
6.11 Blocking performance . 48
6.11.0 General . 48
6.11.1 Test method . 48
6.12 Adjacent Signal Selectivity . 48
6.12.0 General . 48
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6 ETSI EN 303 980 V1.2.1 (2021-05)
6.12.1 Test method . 49
Annex A (informative): Relationship between the present document and the essential
requirements of Directive 2014/53/EU . 50
Annex B (normative): Radiated measurement . 52
B.1 General . 52
B.2 Free Field Test sites and general arrangements for measurements involving the use of radiated
fields . 52
B.2.1 Anechoic Chamber . 52
B.2.2 Anechoic Chamber with a conductive ground plane . 53
B.2.3 Open Area Test Site (OATS) . 55
B.2.4 Minimum requirements for free field test sites. 56
B.2.4.1 Measurements above 18 GHz . 56
B.2.4.2 Test antenna . 56
B.2.4.3 Substitution antenna . 57
B.2.4.4 Measuring antenna . 57
B.2.5 Guidance on the use of free field radiation test sites . 57
B.2.5.1 General . 57
B.2.5.2 Verification of the test site . 57
B.2.5.3 Preparation of the EUT . 57
B.2.5.4 Power supplies to the EUT . 57
B.2.5.5 Range length . 58
B.2.5.6 Site preparation . 58
B.2.5.7 Coupling of signals . 59
B.2.5.8 Standard test methods . 59
B.2.5.8.0 General . 59
B.2.5.8.1 Calibrated setup . 59
B.2.5.8.2 Substitution method . 59
B.3 Guidance on the use of indirect far field test sites . 60
B.3.1 General . 60
B.3.2 Far-field criteria . 61
B.3.3 Calibration Measurement Procedure . 62
B.4 Guidance on the use of near-field-to-far-field transform test sites . 63
B.4.1 General . 63
B.4.2 Calibration Measurement Procedure . 64
Annex C (normative): Conducted measurements . 66
Annex D (informative): General Requirements for RF Cables . 67
Annex E (informative): RF Waveguides . 68
Annex F (informative): Measurement Equipment . 69
F.1 Special considerations for the interpretation of measurement results . 69
F.2 Maximum measurement uncertainty . 69
F.3 Measuring receiver . 70
F.4 Measurement results . 71
Annex G (informative): Applicability of parameters given in ETSI EG 203 336 . 72
Annex H (informative): Bibliography . 74
Annex I (informative): Change history . 75
History . 76

ETSI
7 ETSI EN 303 980 V1.2.1 (2021-05)
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Foreword
This Harmonised European Standard (EN) has been produced by ETSI Technical Committee Satellite Earth Stations
and Systems (SES).
The present document has been prepared under the Commission's standardisation request C(2015) 5376 final [i.1] to
provide one voluntary means of conforming to the essential requirements of Directive 2014/53/EU on the harmonisation
of the laws of the Member States relating to the making available on the market of radio equipment and repealing
Directive 1999/5/EC [i.6].
Once the present document is cited in the Official Journal of the European Union under that Directive, compliance with
the normative clauses of the present document given in Table A.1 confers, within the limits of the scope of the present
document, a presumption of conformity with the corresponding essential requirements of that Directive, and associated
EFTA regulations.
National transposition dates
Date of adoption of this EN: 6 May 2021
Date of latest announcement of this EN (doa): 31 August 2021
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 28 February 2022
Date of withdrawal of any conflicting National Standard (dow): 28 February 2023

ETSI
8 ETSI EN 303 980 V1.2.1 (2021-05)
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
Introduction
The present document is part of a set of standards developed by ETSI and is designed to fit in a modular structure to
cover all radio and telecommunications terminal equipment within the scope of the RE Directive [i.6]. The modular
structure is shown in ETSI EG 201 399 [i.2].
The present document is largely based on ETSI EN 303 979 [i.4], for ESOMPs operating with NGSO satellites.
The present document may also be applicable to the frequency band 14,0 GHz to 14,50 GHz (Earth-to-space) and
10,70 GHz to 12,75 GHz (space-to-Earth) subject to national regulation.
Annex A (informative) provides HS Requirements specifications.
Annex B (normative) describes methods of taking radiated measurements.
Annex C (normative) describes methods of taking conducted measurements.
Annex D (informative) describes requirements for RF measurement cables.
Annex E (informative) describes use of RF waveguides.
Annex F (informative) describes measurement equipment.
Annex G (informative) describes the applicability of parameters in ETSI EG 203 336 [i.7].
Annex H (informative) Bibliography covers other supplementary information.
Recital 10 of Directive 2014/53/EU [i.6] states that "in order to ensure that radio equipment uses the radio spectrum
effectively and supports the efficient use of radio spectrum, radio equipment should be constructed so that: in the case
of a transmitter, when the transmitter is properly installed, maintained and used for its intended purpose it generates
radio waves emissions that do no
...