SIST EN 50131-5-3:2017

SLOVENSKI STANDARD
SIST EN 50131-5-3:2017
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
SIST EN 50131-5-3:2017 en,fr
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50131-5-3:2017

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SIST EN 50131-5-3:2017

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

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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
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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

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EN 50131-5-3:2017
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.
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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
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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
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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)
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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.
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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 reception and processing of the
messages.
During continuous application of the interfering signals whose levels are defined in the subsequent
subclauses, all of the 20 system relevant messages (sent by the transmitting equipment used for test
purposes) shall be correctly received and processed by the receiving equipment.
In the event of the receiving equipment operating in more than one assigned band, the requirement shall be
fulfilled for each individual assigned band.
4.5.2 Interference outside the assigned band for equipment of all grades
The receiving equipment shall be fully functional during the application of the interference signal at a level of
10 V/m at frequency F and subsequently at frequency F (F and F are defined in 5.5.1).
1 2 1 2
4.5.3 Interference within the assigned band for equipment of all grades
The receiving equipment shall be fully functional during the application of the interference signal at a level of
RL + 8 dB (RL is defined in 5.1) at frequency Ft (Ft is defined in 5.5.1).
4.5.4 Interference within the assigned band for grade 3 and grade 4 equipment
Additionally, the receiving equipment shall be fully functional when an interference signal is applied to each
assigned band sequentially at a level, IL + 3 dB (IL is defined in 5.5.4) with a frequency modulated signal as
defined in 5.5.4.
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4.6 Requirement for RF links monitoring
4.6.1 General
The RF links shall be monitored in accordance with the grade. The indication or notification related to RF link
monitoring is dependent on the grade and the state of the equipment.
4.6.2 Requirement for the detection of a failure of periodic communication
A failure of periodic communication shall be detected for any type of device within the time periods as
specified in EN 50131-1:2006, subclause relating to Verification of periodic communication. In the case of a
failure of communication to and from a WD or to and from an SPT, the annunciation of the failure shall be
processed (optional for grade 1 and grade 2).
In the event of a failure of periodic communication, a fault or tamper shall be generated in accordance with
EN 50131-1, clause relating to Signals and messages to be generated.
NOTE This requirement does not apply to portable devices (e.g. key fob).
4.6.3 Requirement for periodic communication before setting
Setting shall be prevented in accordance with EN 50131-1, clause relating to Verification during setting
procedure.
These requirements do not apply to wire-free ACE (e.g. keyfob or portable remote control).
4.6.4 Requirement for the detection of interference
If the level of modulated interference is great enough to corrupt the correct transmissions between
equipments, detection of interference shall take place when such levels are detected for time periods as
specified in Table 5.
Table 5 — Detection of interference timings
 Detection of interference (maximum)
Grades 1 and 2 Sum total of 30 s of interference signal in any 60 s
Grades 3 and 4 Sum total of 10 s of interference signal in any 20 s
For all grades, when modulated interference with:
— a level equal to IL (IL is defined in 5.6.3) permanently applied, no indication or notification other than
those specified in EN 50131-1, clause relating to signals or messages to be generated, shall take place;
and
— a level as given in Table 7 and a duration less than 5 s, no indication or notification shall take place.
In the event of detection of modulated interference with a level as given in Table 7 and duration as given in
Table 5, a fault or tamper shall be generated for grade 1 and grade 2 equipment and a tamper shall be
generated for grade 3 and grade 4 equipment.
The requirements given in Table 5 do not apply to wire-free ACE (e.g. key fob or portable remote control).
According to the grade of the system, the following requirements given in Table 6 for interference detection
apply.
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Table 6 — Detection of interference
 System state CIE/RE WD SPT
  Detection of interference
a
Grade 1 At all times Mandatory Optional Optional
a
Grade 2 At all times Mandatory Optional Optional
Grade 3 At all times Mandatory Mandatory Mandatory
Grade 4 At all times Mandatory Mandatory Mandatory
a
For external devices, if this function is provided, the WD shall conform to the requirement for detection
of interference
The receiving equipment shall detect a level of interference as defined in Table 7, for the durations as
defined in Table 9.
Table 7 — Level of interference signal
Grade 1 IL + 40 dB
Grade 2 IL + 30 dB
Grade 3 IL + 9 dB
Grade 4 IL + 9 dB
The requirements given in Table 5, Table 6, and Table 7 apply to CIE, WD, RE and SPT.
4.7 Antenna
4.7.1 General
The antenna shall have the same stability and tamper protection as required for the device.
4.7.2 Requirements for antenna
For all grades equipment where antennas and/or an antenna cable is accessible at access level 1 the
requirements given in Table 8 shall be fulfilled.
Table 8 — Requirements for antenna
Degrading of antenna performance

CIE and RE Indicate fault and prohibit setting
WD Local notification by device
SPT Automatic transmission of tamper alarm
For grade 3 and grade 4 equipment, antenna and/or an antenna cable shall fulfil the same tamper protection
requirements as those of the device using this antenna.
5 Tests
5.1 General
5.1.1 For these tests, the manufacturer shall provide one system made of the receiving equipment to be
tested (EUT Rx) with one or more transmitting equipment (EUT Tx) and remote control equipment. The
equipment can be modified in order to trigger easily RF alarm messages and to advise easily the operator
when an alarm message is processed.
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5.1.2 Determination of reference level RL
For most of the tests, the receiving equipment shall be set in a receiving state that just ensures a good
reception. The level of this receiving state – measured on the spectrum analyser according Annex A – is
called the reference level (RL).
The reference level RL of the EUT Rx shall be determined and used as the basis for all other tests.
This measurement shall be conducted using the arrangement shown in Annex A.
The signal generator for the wanted signal is appropriately modulated to simulate a transmitte
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