ETSI TS 137 114 V15.2.0 (2018-07)

Universal Mobile Telecommunications System (UMTS); LTE; Active Antenna System (AAS) Base Station (BS) Electromagnetic Compatibility (EMC) (3GPP TS 37.114 version 15.2.0 Release 15)

ETSI TS 137 114 V15.2.0 (2018-07)

Name:ETSI TS 137 114 V15.2.0 (2018-07)   Standard name:Universal Mobile Telecommunications System (UMTS); LTE; Active Antenna System (AAS) Base Station (BS) Electromagnetic Compatibility (EMC) (3GPP TS 37.114 version 15.2.0 Release 15)
Standard number:ETSI TS 137 114 V15.2.0 (2018-07)   language:English language
Release Date:23-Jul-2018   technical committee:3GPP RAN 4 - Specification for radio performance
Drafting committee:   ICS number:
ETSI TS 137 114 V15.2.0 (2018-07)






TECHNICAL SPECIFICATION
Universal Mobile Telecommunications System (UMTS);
LTE;
Active Antenna System (AAS) Base Station (BS)
Electromagnetic Compatibility (EMC)
(3GPP TS 37.114 version 15.2.0 Release 15)

---------------------- Page: 1 ----------------------
3GPP TS 37.114 version 15.2.0 Release 15 1 ETSI TS 137 114 V15.2.0 (2018-07)



Reference
RTS/TSGR-0437114vf20
Keywords
LTE,UMTS
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 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88

Important notice
The present document can be downloaded from:

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 only prevailing document is the
print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat.
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

If you find errors in the present document, please send your comment to one of the following services:

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 2018.
All rights reserved.

TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.
TM TM
3GPP and LTE are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M logo is protected for the benefit of its Members.

GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI

---------------------- Page: 2 ----------------------
3GPP TS 37.114 version 15.2.0 Release 15 2 ETSI TS 137 114 V15.2.0 (2018-07)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is 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 IPR Policy, no investigation, 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.
Foreword
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or
GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables.
The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
.
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.
ETSI

---------------------- Page: 3 ----------------------
3GPP TS 37.114 version 15.2.0 Release 15 3 ETSI TS 137 114 V15.2.0 (2018-07)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 4
1 Scope . 5
2 References . 5
3 Definitions, symbols and abbreviations . 7
3.1 Definitions . 7
3.2 Symbols . 9
3.3 Abbreviations . 9
4 Test conditions . 9
4.1 Exclusion bands . 10
4.4.1 Transmitter exclusion band . 10
4.4.2 Receiver exclusion band . 10
5 Performance assessment . 10
5.1 General . 10
5.2 Assessment of performance in Downlink . 11
5.3 Assessment of performance in Uplink . 11
6 Performance criteria . 11
7 Applicability overview . 12
7.1 Emission . 12
7.2 Immunity . 13
8 Emission . 13
8.1 Test configurations . 13
8.2 Radiated emission from base station . 14
8.2.1 Radiated emission, hybrid AAS BS . 14
8.2.2 Radiated emission, OTA AAS BS . 14
8.3 Conducted emissions, DC power input/output port . 14
8.4 Conducted emissions, AC mains power input/output port . 14
8.5 Harmonic current emissions (AC mains input port) . 15
8.6 Voltage fluctuations and flicker (AC mains input port) . 15
8.7 Conducted emissions, telecommunication ports . 15
9 Immunity . 15
9.1 Test configurations . 15
9.2 RF electromagnetic field (80 MHz - 6000 MHz) . 16
9.2.1 RF electromagnetic field, hybrid AAS BS . 16
9.2.2 RF electromagnetic field, OTA AAS BS . 16
9.3 Electrostatic discharge . 17
9.4 Fast transients common mode . 17
9.5 RF common mode (0.15 MHz - 80 MHz) . 18
9.6 Voltage dips and interruptions . 18
9.7 Surges, common and differential mode . 18
Annex A (informative): Change history . 19
History . 20

ETSI

---------------------- Page: 4 ----------------------
3GPP TS 37.114 version 15.2.0 Release 15 4 ETSI TS 137 114 V15.2.0 (2018-07)
Foreword
rd
This Technical Specification has been produced by the 3 Generation Partnership Project (3GPP).
The contents of the present document are subject to continuing work within the TSG and may change following formal
TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an
identifying change of release date and an increase in version number as follows:
Version x.y.z
where:
x the first digit:
1 presented to TSG for information;
2 presented to TSG for approval;
3 or greater indicates TSG approved document under change control.
y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections,
updates, etc.
z the third digit is incremented when editorial only changes have been incorporated in the document.
ETSI

---------------------- Page: 5 ----------------------
3GPP TS 37.114 version 15.2.0 Release 15 5 ETSI TS 137 114 V15.2.0 (2018-07)
1 Scope
The present document covers the assessment of UTRA TDD, UTRA FDD, E-UTRA, NR and Multi-Standard Radio
(MSR) Active Antenna Systems Base Stations in respect of Electromagnetic Compatibility (EMC).
NOTE: Whenever the UTRA AAS BS is referred in the following section, UTRA TDD and UTRA FDD shall be
considered, unless otherwise stated.
The present document specifies the applicable test conditions, performance assessment and performance criteria for
base stations in the following categories:
- Active Antenna System Base Station for UTRA TDD, UTRA FDD, E-UTRA, NR and MSR meeting the
conducted requirements of 3GPP TS 37.105 [2], with conformance demonstrated by compliance to 3GPP TS
37.145-1 [3],
- Active Antenna System Base Station for UTRA FDD, E-UTRA, NR and MSR meeting the OTA requirements of
3GPP TS 37.105 [2], with conformance demonstrated by compliance to 3GPP TS 37.145-2 [10].
The present document does not cover ancillary equipment requirements, where ancillary equipment is not incorporated
in the radio equipment and can be assessed on a stand-alone basis, as declared by the manufacturer. Ancillary
equipment EMC requirements are still applicable to the AAS BS and are covered by other EMC specifications in TS
25.113 [5], TS 36.113 [6], TS 37.113 [4] and TS 38.113 [30].
The present document does not specify test conditions, performance assessment and performance criteria for the
Narrow-Band Internet of Things (NB-IoT) in band, NB-IoT guard band, or standalone NB-IoT operation, for AAS BS
in single RAT E-UTRA operation as defined in 3GPP TS 36.113 [6], or for AAS BS in MSR operation using E-UTRA
as defined in 3GPP TS 37.113 [4].
The present document does not specify test conditions, performance assessment and performance criteria for Band 46
operation as it is not supported by AAS BS.
The scope of the present document is twofold:
- Requirement, procedures and values of an hybrid AAS BS with TAB connectors for every transceiver unit at the
transceiver array boundary (TAB), subject to conducted requirements,
- Requirements, procedures and values of an OTA AAS BS without TAB connectors and relying in the radiated
interface, subject to radiated requirements.
The electromagnetic environment classification used in the present document refers to the residential, commercial and
light industrial environment classification used in IEC 61000-6-1 [7] and IEC 61000-6-3 [8].
The EMC requirements have been selected to ensure an adequate level of compatibility for apparatus at residential,
commercial and light industrial environments. The levels, however, do not cover extreme cases which may occur in any
location but with low probability of occurrence.
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
- References are either specific (identified by date of publication, edition number, version number, etc.) or
non-specific.
- For a specific reference, subsequent revisions do not apply.
- For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including
a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same
Release as the present document.
[1] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications"
[2] 3GPP TS 37.105: "Active Antenna System (AAS) Base Station (BS) transmission and reception"
ETSI

---------------------- Page: 6 ----------------------
3GPP TS 37.114 version 15.2.0 Release 15 6 ETSI TS 137 114 V15.2.0 (2018-07)
[3] 3GPP TS 37.145-1: "Active Antenna System (AAS) Base Station (BS) conformance testing; Part
1: Conducted conformance testing"
[4] 3GPP TS 37.113: "E-UTRA, UTRA and GSM/EDGE; Multi-Standard Radio (MSR) Base Station
(BS) Electromagnetic Compatibility (EMC)"
[5] 3GPP TS 25.113: "Base Station (BS) and repeater ElectroMagnetic Compatibility (EMC)"
[6] 3GPP TS 36.113: "Evolved Universal Terrestrial Radio Access (E-UTRA); Base Station (BS) and
repeater ElectroMagnetic Compatibility (EMC)"
[7] IEC 61000-6-1: 2016: "Electromagnetic compatibility (EMC) - Part 6-1: Generic standards -
Immunity standard for residential, commercial and light-industrial environments"
[8] IEC 61000-6-3: 2006/AMD1:2010: "Electromagnetic compatibility (EMC) - Part 6-3: Generic
standards - Emission standard for residential, commercial and light industrial environments"
[9] 3GPP TR 37.842: "Radio Frequency (RF) requirement background for Active Antenna System
(AAS) Base Station (BS)"
[10] 3GPP TS 37.145-2: "Active Antenna System (AAS) Base Station (BS) conformance testing; Part
2: radiated conformance testing"
[11] IEC 61000-3-2: 2014: “Electromagnetic compatibility (EMC) - Part 3-2: Limits - Limits for
harmonic current emissions (equipment input current ≤ 16 A per phase)”
[12] IEC 61000-3-3: 2013: “Electromagnetic compatibility (EMC) - Part 3-3: Limits - Limitation of
voltage changes, voltage fluctuations and flicker in public low-voltage supply systems, for
equipment with rated current ≤ 16 A per phase and not subject to conditional connection”
[13] IEC 61000-3-11: “2017 Electromagnetic compatibility (EMC) - Part 3-11: Limits - Limitation of
voltage changes, voltage fluctuations and flicker in public low-voltage supply systems -
Equipment with rated current ≤ 75 A and subject to conditional connection”
[14] IEC 61000-3-12: 2011: “Electromagnetic compatibility (EMC) - Part 3-12: Limits - Limits for
harmonic currents produced by equipment connected to public low-voltage systems with input
current >16 A and ≤ 75 A per phase”
[15] IEC 61000-4-2: 2008: “Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement
techniques - Electrostatic discharge immunity test”
[16] IEC 61000-4-3: 2006+AMD1:2007+AMD2:2010: “Electromagnetic compatibility (EMC) - Part 4-
3: Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field
immunity test”
[17] IEC 61000-4-4: 2012: “Electromagnetic compatibility (EMC) – Part 4-4: Testing and
measurement techniques – Electrical fast transient/burst immunity test”
[18] IEC 61000-4-5: 2014+AMD1:2017: “Electromagnetic compatibility (EMC) - Part 4-5: Testing and
measurement techniques - Surge immunity test”
[19] IEC 61000-4-6: 2013: “Electromagnetic compatibility (EMC) - Part 4-6: Testing and measurement
techniques - Immunity to conducted disturbances, induced by radio-frequency fields”
[20] IEC 61000-4-11: 2004+AMD1:2017: “Electromagnetic compatibility (EMC) - Part 4-11: Testing
and measurement techniques - Voltage dips, short interruptions and voltage variations immunity
tests”
[21] ETSI EN 301 489-1: “Electromagnetic compatibility and Radio spectrum Matters (ERM);
ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 1:
Common technical requirements”
[22] Void
[23] CISPR 16-1-1: “Specification for radio disturbance and immunity measuring apparatus and
methods - Part 1-1: Radio disturbance and immunity measuring apparatus - Measuring apparatus”
ETSI

---------------------- Page: 7 ----------------------
3GPP TS 37.114 version 15.2.0 Release 15 7 ETSI TS 137 114 V15.2.0 (2018-07)
[24] ITU-R SM.329-10: “Unwanted emissions in the spurious domain”
[25] ETSI EN 301 489-50, v2.1.0: “ElectroMagnetic Compatibility (EMC) standard for radio
equipment and services; Part 50: Specific conditions for Cellular Communication Base Station
(BS), repeater and ancillary equipment”
[26] 3GPP TS 25.102: “User Equipment (UE) radio transmission and reception (TDD)”
[27] 3GPP TS 25.101: “User Equipment (UE) radio transmission and reception (FDD)”
[28] 3GPP TS 36.101: “Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE)
radio transmission and reception”
[29] CISPR 32: “Electromagnetic compatibility of multimedia equipment - Emission requirements”
[30] 3GPP TS 38.113: "NR; Base Station (BS) ElectroMagnetic Compatibility (EMC)"
[31] 3GPP TS 38.104: "NR; Base Station (BS) radio transmission and reception"
[32] 3GPP TS 38.145-2: "NR; Base Station (BS) conformance testing Part 2: Radiated conformance
testing"
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in TR 21.905 [1], TS 37.113 [4] and the
following apply. A term defined in the present document takes precedence over the definition of the same term, if any,
in TR 21.905 [1] or TS 37.113 [4].
NOTE: Multi-word definitions are treated as linguistic expressions and printed in italic font throughout this
requirement specification. Linguistic expressions may not be split and are printed in their entirety.
active antenna system base station: BS system which combines an antenna array with a transceiver unit array and a
radio distribution network
antenna array: group of radiating elements characterized by the geometry and the properties of the array elements
antenna port: RF interface at the transceiver array boundary, specifically the TAB connectors
BS type 1-H: NR base station operating at FR1 with a requirement set consisting of conducted requirements defined at
individual TAB connectors and OTA requirements defined at RIB
BS type 1-O: NR base station operating at FR1 with a requirement set consisting only of OTA requirements defined at
the RIB
hybrid AAS BS: AAS BS which has both a conducted RF interface and a radiated RF interface in the far field and
conforms to a hybrid requirements set
NB-IoT In-band operation: NB-IoT is operating in-band when it utilizes the resource block(s) within a normal E-
UTRA carrier
NB-IoT guard band operation: NB-IoT is operating in guard band when it utilizes the unused resource block(s) within
an E-UTRA carrier’s guard-band
NB-IoT standalone operation: NB-IoT is operating standalone when it utilizes its own spectrum, for example the
spectrum currently being used by GERAN systems as a replacement of one or more GSM carriers, as well as scattered
spectrum for potential IoT deployment
OTA AAS BS: AAS BS which has ≥8 transceiver units for E-UTRA or MSR and ≥4 transceiver units for UTRA per
cell and has a radiated RF interface only and conforms to the OTA requirements set
OTA requirements set: complete set of OTA requirements applied to an OTA AAS BS
port: particular interface of EUT used for EMC requirements testing purposes
ETSI

---------------------- Page: 8 ----------------------
3GPP TS 37.114 version 15.2.0 Release 15 8 ETSI TS 137 114 V15.2.0 (2018-07)
NOTE: Any connection point on EUT intended for connection of cables to or from EUT during the EMC testing
is considered as a port.
EXAMPLE 1: Examples of ports for hybrid AAS BS are as presented in figure 3.1-1:

Figure 3.1-1: Examples of ports for hybrid AAS BS
EXAMPLE 2: Examples of ports for OTA AAS BS (i.e. with no antenna ports) are as presented in figure 3.1-2:

Figure 3.1-2: Examples of ports for OTA AAS BS
radiated interface boundary: operating band specific radiated requirements reference where the radiated requirements
apply.
radio distribution network: linear passive network which distributes the RF power generated by the transceiver unit
array to the antenna array, and/or distributes the radio signals collected by the antenna array to the transceiver unit
array
NOTE: In the case when the active transceiver units are physically integrated with the array elements of the
antenna array, the radio distribution network is a one-to-one mapping.
single RAT E-UTRA operation: operation of AAS BS declared to be single RAT E-UTRA in the operating band
NOTE: Single RAT E-UTRA operation does not cover in-band NB-IoT, nor guardband NB-IoT operation.
single RAT UTRA operation: operation of AAS BS declared to be single RAT UTRA in the operating band
TAB connector: transceiver array boundary connector
transceiver array boundary: conducted interface between the transceiver unit array and the composite antenna
transceiver unit: active unit consisting of transmitter and/or receiver which transmits and/or receives radio signals, and
which may include passive RF filters
telecommunication port: ports which are intended to be connected to telecommunication networks (e.g. public
switched telecommunication networks, integrated services digital networks), local area networks (e.g. Ethernet, Token
Ring) and similar networks
NOTE: ETSI EN 301 489-1 [21] calls telecommunication port as the “wired network port”.
ETSI

---------------------- Page: 9 ----------------------
3GPP TS 37.114 version 15.2.0 Release 15 9 ETSI TS 137 114 V15.2.0 (2018-07)
3.2 Symbols
For the purposes of the present document, the following symbols apply:
Δf Maximum offset of the out-of-band boundary from the uplink operating band edge
OOB
F The lowest frequency of the uplink operating band
UL_low
F The highest frequency of the uplink operating band
UL_high

3.3 Abbreviations
For the purposes of the present document, the abbreviations given in TR 21.905 [1] and the following apply.
An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any,
in TR 21.905 [1].
AAS Active Antenna System
AAS BS AAS Base Station
EMC ElectroMagnetic Compatibility
EUT Equipement Under Test
FR1 Frequency Range 1
MSR Multi-Standard Radio
NB-IoT Narrowband – Internet of Things
NR New Radio
RDN Radio Distribution Network
RF Radio Frequency
RIB Radiated Interface Boundary
TAB Transceiver Array Boundary
4 Test conditions
The equipment shall be tested in normal test environment defined in base station conformance testing specification
TS 37.145-1 [3]. The test conditions shall be recorded in the test report.
For an AAS BS supporting more than one RAT, tests shall be performed with RATs activated according to the test
configurations in TS 37.113 [4]. Tests shall be performed relating to each type of port and RIB, and need not be
repeated for each RAT if operating RATs are assessed simultaneously during the test.
For AAS BS supporting only single RAT operation only, tests relating to the antenna port(s) and RIBs shall be
performed for each supported RAT.
For AAS BS capable of multi-band operation, the requirements in the present document apply for each supported
operating band unless otherwise stated. Operating bands and RATs shall be activated according to the respective test
configurations in TS 25.113 [5], TS 36.113 [6], or TS 37.113 [4]. Tests shall be performed relating to each type of port
and RIB, and all RATs per band shall be assessed during the tests.
Requirements apply only for the declared operating band and corresponding Band Categories as per capability sets and
manufacturer’s declarations of the AAS BS in TS 37.145-1 [3] and TS 37.145-2 [10].
The manufacturer shall declare the supported capability set(s) according to TS 37.145-1 [3] and TS 37.145-2 [10]. Tests
performed on a AAS BS according to a declared capability set(s) cover all single RAT and multi-RAT configurations
included in the declared capability set.
NOTE 1: Capability sets for hybrid AAS BS are defined in 3GPP TS 37.141-1 [3] and declared in D6.12 declaration.
NOTE 2: Radiated capability sets for hybrid AAS BS and OTA AAS BS are defined in 3GPP TS 37.141-2 [10] and
declared by D9.25 declaration.
Where the hybrid AAS BS has multiple TAB connectors which are declared to be equivalent then it is sufficient to
perform EMC tests on a single representative TAB connector. For the definition of the TAB connector equivalence
declaration (D6.70), refer to TS 37.145-1 [3].
ETSI

---------------------- Page: 10 ----------------------
3GPP TS 37.114 version 15.2.0 Release 15 10 ETSI TS 137 114 V15.2.0 (2018-07)
EMC test shall not be performed with the AAS BS antenna array radiating, all TAB connectors shall be disconnected
from the radio distribution network (RDN)/antenna array as specified in TS 37.105 [2] and terminated in an appropriate
load impedance. For the description of the general AAS BS radio architecture and relations between the RDN/antenna
array and the Transceiver Array Boundary, refer to TR 37.842 [9].
Depending on RAT capability sets supported by the AAS BS, the following test conditions shall be referred and applied
for the BS test configurations:
- For UTRA AAS BS the test conditions from TS 25.113 [5] apply.
- For E-UTRA AAS BS the test conditions from TS 36.113 [6] apply.
- For MSR AAS BS the test conditions from TS 37.113 [4] apply.
Whenever ports are considered for the emissions and immunity testing in the referred TS 25.113, TS 36.113 and TS
37.113 specifications, special considerations shall be taken to test conditions specification for OTA AAS BS due to lack
of antenna ports.
NOTE 3: The receiver exclusion bands defined in in E
...

  • Relates Information
  • ISO 8130-9:1992

    ISO 8130-9:1992 - Coating powders
    09-28
  • EN 352-2:2020/FprA1

    EN 352-2:2021/oprA1:2023
    09-28
  • IEC TS 61158-4:1999

    IEC TS 61158-4:1999 - Digital data communications for measurement and control - Fieldbus for use in industrial control systems - Part 4: Data Link protocol specification Released:3/24/1999 Isbn:2831847656
    09-28
  • HD 566 S1:1990

    HD 566 S1:1998
    09-28
  • ISO 5131:1982/Amd 1:1992

    ISO 5131:1982/Amd 1:1992
    09-28
  • EN 60598-2-22:1990

    EN 60598-2-22:1996
    09-27
  • ISO 8504-2:1992

    ISO 8504-2:1992 - Preparation of steel substrates before application of paints and related products -- Surface preparation methods
    09-27
  • EN 12165:2024

    prEN 12165:2022
    09-27
  • IEC TS 61158-6:1999

    IEC TS 61158-6:1999 - Digital data communications for measurement and control - Fieldbus for use in industrial control systems - Part 6: Application Layer protocol specification Released:3/24/1999 Isbn:2831847613
    09-27
  • ISO 4252:1992

    ISO 4252:1992 - Agricultural tractors -- Operator's workplace, access and exit -- Dimensions
    09-27