EN 50131-5-3:2017

Alarm systems - Intrusion systems - Part 5-3: Requirements for interconnections equipment using radio frequency techniques

This European Standard applies to intrusion alarm equipment using radio frequency (RF) links and located on protected premises. It does not cover long-range radio transmissions. This European Standard defines the terms used in the field of intrusion alarm equipment using radio frequency links as well as the requirements relevant to the equipment.

Alarmanlagen - Einbruch- und Überfallmeldeanlagen - Teil 5-3: Anforderungen an Übertragungsgeräte, die Funkfrequenz-Techniken verwenden

Systèmes d'alarme - Systèmes d'alarme contre l'intrusion - Partie 5-3: Exigences pour les équipements d'interconnexion utilisant des techniques radio

La présente Norme européenne s’applique aux équipements d’alarme contre l’intrusion utilisant des liaisons radio (RF) et installés à l’intérieur des locaux à protéger. Elle ne couvre pas les transmissions radio à longue distance. La présente Norme européenne définit les termes utilisés dans le domaine des équipements d’alarme contre l’intrusion qui utilisent des liaisons radio, ainsi que les exigences s’appliquant à ces équipements.

Alarmni sistemi - Sistemi za javljanje vloma in ropa - 5-3. del: Zahteve za povezovalno opremo, ki uporablja radiofrekvenčno tehniko

Ta evropski standard se uporablja za alarmno opremo za javljanje vloma, ki uporablja radiofrekvenčne (RF) povezave in se nahaja v zavarovanih prostorih. Ne zajema radijskih prenosov dolgega donosa.
Ta evropski standard določa izraze, ki se uporabljajo na področju alarmne opreme za javljanje vloma, ki uporablja radiofrekvenčne povezave, in zahteve, ki se nanašajo na opremo.

General Information

• Status: Published
• Publication Date: 16-Mar-2017
• ICS: 13.310 - Protection against crime
• Technical Committee: CLC/TC 79 - Alarm systems
• Drafting Committee: CLC/TC 79/WG 11 - Alarm systems local interconnections
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 20-Apr-2022
• Completion Date: 23-Sep-2025
• Ref Project: SIST EN 50131-5-3:2017 - Alarm systems - Intrusion and hold-up systems - Part 5-3: Requirements for interconnections equipment using radio frequency techniques

Relations

• Replaces: EN 50131-5-3:2005/A1:2008 - Alarm systems - Intrusion systems - Part 5-3: Requirements for interconnections equipment using radio frequency techniques
• Effective Date: 25-Jan-2023
• Replaces: EN 50131-5-3:2005 - Alarm systems - Intrusion systems - Part 5-3: Requirements for interconnections equipment using radio frequency techniques
• Effective Date: 07-Jun-2022

Overview - EN 50131-5-3:2017 (Alarm systems, RF interconnections)

EN 50131-5-3:2017 is the CENELEC European standard that specifies requirements for interconnection equipment using radio frequency (RF) techniques for intrusion alarm systems located on protected premises. It sets out the terminology, functional requirements and test criteria for RF links used in alarm systems (excluding long‑range radio transmissions). The standard complements other EN 50131 parts that define system and equipment requirements for intrusion and hold‑up alarm systems.

Key topics and technical requirements

The standard addresses both functional and test aspects of RF interconnection equipment, including:

• Terms and definitions - standardised vocabulary for RF alarm messages, collision, substitution, throughput ratio, relaying equipment, etc.
• Immunity to attenuation - requirements and installation/maintenance provisions for coping with passive environmental changes that reduce RF link budget. Manufacturers must document means to meet attenuation requirements.
• Immunity to collision - requirements on system occupation rate and throughput ratio to limit message collisions between devices in the same system.
• Immunity to substitution - protection against both unintentional and intentional message/component substitution that could reduce system security.
• Immunity to interference - handling of external RF interference both outside and inside assigned frequency bands; specific requirements vary by equipment grade.
• RF link monitoring - requirements for detection of communication failures, periodic communications before setting, and detection of interference.
• Antenna requirements - mechanical and performance expectations for antennas used with RF interconnection equipment.
• Test procedures - normative tests for attenuation, collision, substitution, interference and monitoring (including grade‑specific tests and test setups).

Practical applications and who uses this standard

EN 50131-5-3:2017 is applied where RF links form part of an intrusion alarm system on supervised premises. Typical users include:

• Manufacturers of RF detectors, transmitters, relaying equipment and supervised premises transceivers (SPT) - to design compliant products and prepare installation/maintenance documentation.
• System integrators and installers - to ensure correct installation, commissioning and maintenance of RF alarm links.
• Test laboratories and certification bodies - to perform the specified immunity, interference and monitoring tests for product certification.
• Security consultants and specifiers - to define performance and interoperability requirements for premises that use RF alarm devices.
• Maintenance teams - to follow manufacturer‑specified procedures for RF maintenance modes and periodic communication checks.

Related standards

• EN 50131-1 (System requirements)
• EN 50131-3 (Control and indicating equipment)
• CLC/FprTS 50131-5-1 (Requirements for wired interconnections)
• CLC/TS 50131-5-4 (System compatibility testing)

Keywords: EN 50131-5-3:2017, alarm systems, intrusion systems, RF links, radio frequency, interconnection equipment, immunity to interference, RF link monitoring, CENELEC.

Standards Content (Sample)

SLOVENSKI STANDARD
01-junij-2017
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SIST EN 50131-5-3:2005
SIST EN 50131-5-3:2005/A1:2009
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Alarm systems - Intrusion and hold-up systems - Part 5-3: Requirements for
interconnections equipment using radio frequency techniques
Alarmanlagen - Einbruch- und Überfallmeldeanlagen - Teil 5-3: Anforderungen an
Übertragungsgeräte, die Funkfrequenz-Techniken verwenden
Systèmes d’alarme - Systèmes d'alarme contre l’intrusion et les hold-up - Partie 5-3:
Exigences pour les équipements d'alarme intrusion utilisant des techniques radio
Ta slovenski standard je istoveten z: EN 50131-5-3:2017
ICS:
13.310 Varstvo pred kriminalom Protection against crime
13.320 Alarmni in opozorilni sistemi Alarm and warning systems
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50131-5-3

NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2017
ICS 13.310 Supersedes EN 50131-5-3:2005
English Version
Alarm systems - Intrusion systems - Part 5-3: Requirements for
interconnections equipment using radio frequency techniques
Systèmes d'alarme - Systèmes d'alarme contre l'intrusion - Alarmanlagen - Einbruch- und Überfallmeldeanlagen - Teil
Partie 5-3: Exigences pour les équipements 5-3: Anforderungen an Übertragungsgeräte, die
d'interconnexion utilisant des techniques radio Funkfrequenz-Techniken verwenden
This European Standard was approved by CENELEC on 2016-11-14. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50131-5-3:2017 E
Contents Page
European foreword . 4
1 Scope . 5
2 Normative references . 5
3 Terms, definitions and abbreviated terms . 5
3.1 Terms and definitions . 5
3.2 Abbreviated terms . 7
4 Requirements . 7
4.1 General . 7
4.2 Immunity to attenuation . 7
4.2.1 General . 7
4.2.2 Requirement for immunity to attenuation . 7
4.3 Immunity to collision . 8
4.3.1 General . 8
4.3.2 Requirement for occupation rate . 8
4.3.3 Requirement for throughput ratio . 8
4.4 Immunity to substitution . 8
4.4.1 General . 8
4.4.2 Immunity to unintentional message and component substitution . 8
4.4.3 Immunity to intentional messages and components substitution . 9
4.5 Immunity to interference . 9
4.5.1 General . 9
4.5.2 Interference outside the assigned band for equipment of all grades . 9
4.5.3 Interference within the assigned band for equipment of all grades . 9
4.6 Requirement for RF links monitoring . 10
4.6.1 General . 10
4.6.2 Requirement for the detection of a failure of periodic communication . 10
4.6.3 Requirement for periodic communication before setting . 10
4.6.4 Requirement for the detection of interference . 10
4.7 Antenna . 11
4.7.1 General . 11
4.7.2 Requirements for antenna . 11
5 Tests . 11
5.1 General . 11
5.2 Test for immunity to attenuation . 12
5.3 Verification of immunity to collision . 12
5.3.1 Calculation of the occupation rate . 12
5.3.2 Test for throughput ratio . 13
5.4 Tests for immunity to substitution . 13
5.4.1 Test for immunity to unintentional messages and components substitution . 13
5.4.2 Test for immunity to intentional messages and components substitution . 13
5.5 Tests for immunity to interference . 13
5.5.1 General . 13
5.5.2 Test for interference outside of the assigned band (for all grades) . 14
5.5.3 Test for interference within the assigned band for equipment of all grades . 14
5.5.4 Test for interference within the assigned band for grade 3 and grade 4 equipment . 15
5.6 Tests for RF link monitoring . 15
5.6.1 Tests for the detection of a failure of periodic communication on a link . 15
5.6.2 Periodic communication before setting . 16
5.6.3 Tests for detection of interference . 16
5.7 Test for antenna . 17
Annex A (normative) Test setup . 18
Annex B (informative) Interference signal . 19
Annex C (informative) Example for the calculation of occupation rate . 20

Figures
Figure A.1 — Test setup. 18
Figure B.1 — Level IL . 19
Figure B.2 — Interference signal . 19

Tables
Table 1 — Immunity to attenuation . 7
Table 2 — System occupation of the medium . 8
Table 3 — Throughput ratio . 8
Table 4 — Identification codes . 9
Table 5 — Detection of interference timings . 10
Table 6 — Detection of interference . 11
Table 7 — Level of interference signal . 11
Table 8 — Requirements for antenna . 11
Table 9 — Duration of interference signals . 16
Table C.1 — Example for the calculation of occupation rate . 20

European foreword
This document (EN 50131-5-3:2017) has been prepared by CLC/TC 79 “Alarm systems”.
The following dates are fixed:
• latest date by which this document has to be implemented at
(dop) 2017-09-17
national level by publication of an identical national standard
or by endorsement
• latest date by which the national standards conflicting with this
(dow) 2020-03-17
document have to be withdrawn
This document supersedes EN 50131-5-3:2005.
This document is bound to be used in conjunction with the other parts of the EN 50131 series that define the
functional requirements of the equipment regardless of the type of interconnections used.
EN 50131-5 is currently composed with the following parts:
— CLC/FprTS 50131-5-1 Alarm systems — Intrusion systems — Part 5-1: Interconnections —
Requirements for wired Interconnection for I&HAS equipments located in supervised premises;
— EN 50131-5-3, Alarm systems — Intrusion systems — Part 5-3: Requirements for interconnections
equipment using radio frequency techniques;
— CLC/TS 50131-5-4, Alarm systems — Intrusion and hold-up systems — Part 5-4: System compatibility
testing for I&HAS equipments located in supervised premises.
1 Scope
This European Standard applies to intrusion alarm equipment using radio frequency (RF) links and located
on protected premises. It does not cover long-range radio transmissions.
This European Standard defines the terms used in the field of intrusion alarm equipment using radio
frequency links as well as the requirements relevant to the equipment.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 50131-1:2006, Alarm systems - Intrusion and hold-up systems - Part 1: System requirements
EN 50131-3, Alarm systems - Intrusion and hold-up systems - Part 3: Control and indicating equipment
3 Terms, definitions and abbreviated terms
3.1 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
3.1.1
alarm message
message conveying information regarding intruder, tamper or fault alarms
3.1.2
assigned band
frequency band within which the equipment is authorized to operate
3.1.3
attenuation
degradation of the RF signal due to a change in the passive environment of the system after its installation
EXAMPLE Creation, relocation or reflection or absorption materials.
3.1.4
collision
simultaneous transmissions from two or more RF communication devices belonging to the same system, of
sufficient signal strength to cause corruption or obliteration of the RF signals
3.1.5
collision probability
likelihood of two or more messages having part or all of their information coincident on the RF link leading to
a collision
3.1.6
communication link
all local RF equipment, media and protocols used to route alarm system messages
3.1.7
disturbance
event originating internally or externally to the system and liable to impair transmission and/or processing of
data in the system
Note 1 to entry: It can be unintentionally or intentionally harmful.
Note 2 to entry: Causes of disturbance are attenuation, collision, unintentional or intentional message substitution and
other RF interference.
Note 3 to entry: The different effects that disturbances may have on the signals are:
— corruption of the RF signal with no message corruption,
— corruption of the RF signal with partial message corruption,
— total obliteration of the RF signal (inability to receive).
3.1.8
failure of communication
inability to pass a message on an RF link
3.1.9
identification code
part of a message used to identify a RF communication device belonging to the system
3.1.10
intentional message substitution
deliberate transmissions from an RF communication device using the correct protocol with the intention of
reducing the security of the system
3.1.11
RF interference
RF emissions from any other source, that may cause corruption or obliteration of wanted signals and do not
conform to the definition of collision or message substitution
3.1.12
RF communication device
device using RF transmission links
3.1.13
relaying equipment
device that receives RF messages from one or more devices and transmits them to another receiving device
of the alarm system either directly or through other relaying equipment
3.1.14
throughput ratio
ratio of the total number of messages correctly interpreted by the receiving device to the total number of
messages sent by the transmitting device
3.1.15
unintentional message substitution
non-deliberate transmissions from an RF communication device using the correct protocol originating from
another system with no intention of reducing the security
EXAMPLE Alarm system of same manufacturer and type installed in the neighbourhood, which could negatively
interfere by its normal operation
3.2 Abbreviated terms
For the purpose of this document, the following abbreviated terms apply:
ACE ancillary control equipment
CIE control and indicating equipment
EUT Rx receiving equipment under test
EUT Tx transmitting equipment under test
RE relaying equipment
RF radio frequency
RL reference level
SPT Supervised premises transceiver
WD warning device
4 Requirements
4.1 General
Components of IAS with usage of RF links shall comply with the following requirements.
4.2 Immunity to attenuation
4.2.1 General
Due to the fact that there may be changes in the passive environment after installation, it shall be possible to
temporarily reduce or simulate the reduction of the RF link budget during installation or maintenance.
4.2.2 Requirement for immunity to attenuation
The manufacturer shall specify in the installation and maintenance documentation the means used on its
equipment to fulfil this requirement.
This function shall be automatically activated by the system itself when the system is in maintenance or
installation mode.
In this installation condition, the reduction shall be according to the values given in Table 1. This applies to
all links e.g. to CIE, RE, SPT and WD.
Table 1 — Immunity to attenuation
Reduction of the RF link budget
Grade 1 ≥ 8 dB
Grade 2 ≥ 8 dB
Grade 3 ≥ 15 dB
Grade 4 ≥ 15 dB
NOTE The requirements given in Table 1 do not apply to portable
devices (e.g. key fob)
4.3 Immunity to collision
4.3.1 General
The objective of the requirement and the process of decoding is to ensure a high level of confidence in the
transmissions of alarm and monitoring messages thus reducing the probability of equipment on the same
system causing interference by design and possibly leading to loss or corruption of information.
4.3.2 Requirement for occupation rate
To keep the occupation rate as small as possible, the following requirements given in Table 2 shall be
fulfilled. This rate shall be calculated by assuming the system is at its full capacity.
Table 2 — System occupation of the medium
Maximum occupation In a period of time of
(percentage)
Grade 1 10 % 240 min
Grade 2 10 % 120 min
Grade 3 10 % 100 s
Grade 4 10 % 10 s
To ensure successful transmissions for grade 3 and grade 4 equipment, all types of messages (e.g. alarm,
monitoring) shall be acknowledged by the receiving equipment to the transmitting equipment.
4.3.3 Requirement for throughput ratio
The objective of this requirement is to measure the ability of all receiving equipment to interpret and decode
radio messages accurately.
Receiving equipment shall comply with the requirements of Table 3.
Table 3 — Throughput ratio
Minimum number of
correctly interpreted
messages
All grades 999 out of 1 000
4.4 Immunity to substitution
4.4.1 General
Intentional message or component substitution generally attempts to reduce the security of the system.
Unintentional message or component substitution generally causes false alarms or tamper alarms and has a
nuisance value.
4.4.2 Immunity to unintentional message and component substitution
In order to prevent unintentional message and component substitution, each transmitting device shall be
identified as belonging to the system by an identification code. The number of identification code possibilities
shall be at least equal to those shown in Table 4.
Table 4 — Identification codes
Identification codes
Grade 1 100 000
Grade 2 1 000 000
Grade 3 10 000 000
Grade 4 100 000 000
Alternatively the manufacturer shall provide means to the installer on site to choose identification code with
the minimum of 256 codes to ensure that an alarm shall not interfere with other nearby systems.
4.4.3 Immunity to intentional messages and components substitution
In accordance with EN 50131-3 for grade 4 equipment, means to monitor and to detect messages and
components substitution are required.
4.5 Immunity to interference
4.5.1 General
The purpose of this requirement is to check the ability of the receiving equipment to discriminate between the
desired signal and the interfering RF signals.
This immunity to interference requirement applies to the receiving equipment as listed below:
— CIE;
— WD;
— RE;
— SPT.
Each of the interference signals defined below shall be applied and shall not cause false alarm, indications of
a failure of periodic communication and shall not compromise the correct rec
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