Basic standard for the in-situ measurement of electromagnetic field strength related to human exposure in the vicinity of base stations

This European Standard specifies in the vicinity of base station as defined in 3.2 the measurement methods, the measurement systems and the post processing that shall be used to determine in-situ the electromagnetic field for human exposure assessment in the frequency range 100 kHz to 300 GHz.

Grundnorm für die Messung der elektromagnetischen Feldstärke am Aufstell- und Betriebsort von Basisstationen in Bezug auf die Sicherheit von in ihrer Nähe befindlichen Personen

Norme de base pour la mesure du champ électromagnétique sur site, en relation avec l’exposition du corps humain à proximité des stations de base

Osnovni standard za terensko merjenje jakosti elektromagnetnega polja v zvezi z izpostavljenostjo ljudi v okolici baznih postaj - Dopolnilo A1

Ta evropski standard določa merilne metode in sisteme ter naknadno obdelavo v okolici baznih postaj, kot je določeno v poglavju 3.2, za terensko merjenje elektromagnetnega polja v zvezi z izpostavljenostjo ljudi v frekvenčnem območju 100 kHz–300 GHz.

General Information

Status
Published
Public Enquiry End Date
24-Dec-2012
Publication Date
13-Apr-2014
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
31-Mar-2014
Due Date
05-Jun-2014
Completion Date
14-Apr-2014

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SLOVENSKI STANDARD
SIST EN 50492:2009/A1:2014
01-maj-2014
Osnovni standard za terensko merjenje jakosti elektromagnetnega polja v zvezi z
izpostavljenostjo ljudi v okolici baznih postaj - Dopolnilo A1

Basic standard for the in-situ measurement of electromagnetic field strength related to

human exposure in the vicinity of base stations
Grundnorm für die Messung der elektromagnetischen Feldstärke am Aufstell- und

Betriebsort von Basisstationen in Bezug auf die Sicherheit von in ihrer Nähe befindlichen

Personen

Norme de base pour la mesure du champ électromagnétique sur site, en relation avec

l’exposition du corps humain à proximité des stations de base
Ta slovenski standard je istoveten z: EN 50492:2008/A1:2014
ICS:
17.220.20 0HUMHQMHHOHNWULþQLKLQ Measurement of electrical
PDJQHWQLKYHOLþLQ and magnetic quantities
33.070.01 Mobilni servisi na splošno Mobile services in general
SIST EN 50492:2009/A1:2014 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 50492:2009/A1:2014
---------------------- Page: 2 ----------------------
SIST EN 50492:2009/A1:2014
EUROPEAN STANDARD
EN 50492/A1
NORME EUROPÉENNE
March 2014
EUROPÄISCHE NORM
ICS 17.220.20; 33.070.01
English version
Basic standard for the in-situ measurement of electromagnetic field
strength related to human exposure in the vicinity of base stations
Norme de base pour la mesure du champ Grundnorm für die Messung der
électromagnétique sur site, en relation elektromagnetischen Feldstärke am
avec l’exposition du corps humain à Aufstell- und Betriebsort von
proximité des stations de base Basisstationen in Bezug auf die Sicherheit
von in ihrer Nähe befindlichen Personen

This amendment A1 modifies the European Standard EN 50492:2008; it was approved by CENELEC on 2014-

01-06. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate

the conditions for giving this amendment 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 amendment 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

CENELEC
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

© 2014 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 50492:2008/A1:2014 E
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SIST EN 50492:2009/A1:2014
EN 50492:2008/A1:2014 - 2 -
Foreword
This document (EN 50492:2008/A1:2014) has been prepared by CLC/TC 106X,
"Electromagnetic fields in the human environment".
The following dates are fixed:
• latest date by which this document h (dop) 2015-01-06
as to be implemented at national
level by publication of an identical
national
standard or by endorsement
• latest date by which the national (dow) 2017-01-06
standards conflicting with this
document have to be withdrawn

Attention is drawn to the possibility that some of the elements of this document may be the

subject of patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying

any or all such patent rights.
__________________
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SIST EN 50492:2009/A1:2014
- 3 - EN 50492:2008/A1:2014
Table of Contents
Add:

Annex L (informative) FDD LTE measurements ....................................................................

L.1 General .................................................................................................................

L.2 Maximum LTE exposure .......................................................................................

L.2.1 Introduction ..................................................................................................

L.2.2 Method using a dedicated decoder ..............................................................

L.2.3 Method using a basic spectrum analyser .....................................................

L.3 Instantaneous LTE exposure measurements ........................................................

Add to the table of figures
Figure L. 1 - LTE time-frequency plan

Figure L. 2 - Illustration of the boosting factor BF, specific to each network operator

Figure L. 3 - LTE spectrum: PBCH power higher than RS power
Add to the table of tables

Table L. 1 - Theoretical extrapolation factor, n as function of the bandwidth, assuming all

subcarriers are at the same power level.
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SIST EN 50492:2009/A1:2014
EN 50492:2008/A1:2014 - 4 -
10 Assessment of the field strength at maximum traffic of a
cellular network
Replace the last paragraph:

"For WiFi the measurements and extrapolation shall take into account the specificity of this

signal related to the variation of the time occupation (technical parameters such as channel

occupancy etc are described in Annex J)."

"For Wifi and LTE the measurements and extrapolation shall take into account the specificity

of these signals related to time occupation (technical parameters are described in Annex J

and Annex L)."
---------------------- Page: 6 ----------------------
SIST EN 50492:2009/A1:2014
- 5 - EN 50492:2008/A1:2014
Add Annex L:
Annex L
(informative)
FDD LTE measurements
L.1 General
Annex L describes methods to measure and extrapolate LTE (MIMO 2x2 and MIMO 2x1)

exposure level (FDD LTE [1]). This annex is not an exhaustive summary of existing methods,

and other measurement methods for LTE have been published [2]. The proposed methods

require classical radiofrequency (RF) measurement instruments: a basic spectrum analyser

or a dedicated decoder and an isotropic antenna.

LTE emissions consist of specific signals at specific time-frequency allocations [3] [4]. This

kind of dynamic time-frequency allocation is known as Orthogonal Frequency Division

Multiple Access (OFDMA). See Figure L.1.
Figure L.1 - LTE time-frequency plan

As for other telecommunication signals, LTE signals are subject to time variations because of

traffic variations and random fluctuations of the propagation medium. The extrapolation to the

maximum traffic should be based on the measurement of a time independent channel or

signal. Due to the LTE specifications, the power of each time-frequency unitary element [1]

(66,7 µs, 15 kHz) in the LTE downlink signal is scalable from one kind of transmitted data to

another. In addition, LTE downlink spectrum is totally flexible and may vary from 1,4 MHz to

20 MHz, and inside the spectrum, the power level may vary from one channel to another.

...

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