1、 ETSI EN 300 718-1 V2.1.1 (2018-01) Avalanche Beacons operating at 457 kHz; Transmitter-receiver systems; Part 1: Harmonised Standard for access to radio spectrum HARMONISED EUROPEAN STANDARD ETSI ETSI EN 300 718-1 V2.1.1 (2018-01) 2 Reference REN/ERM-TG28-512-1 Keywords harmonised standard, radio,
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7、n authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. ETSI 2018. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are trademarks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are trademarks of ETSI registered fo
8、r 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 ETSI EN 300 718-1 V2.1.1 (2018-01) 3 Contents Intellectual Property Rights 5g3Foreword
9、. 5g3Modal verbs terminology 6g31 Scope 7g32 References 7g32.1 Normative references . 7g32.2 Informative references 7g33 Definitions, symbols and abbreviations . 8g33.1 Definitions 8g33.2 Symbols 8g33.3 Abbreviations . 9g34 Technical requirements specifications . 9g34.1 Environmental profile . 9g34.
10、2 Conformance requirements for transmitters . 9g34.2.1 Modulation and carrier keying 9g34.2.1.1 Definition 9g34.2.1.2 Method of measurement 9g34.2.1.3 Limits 9g34.2.2 Frequency error . 10g34.2.2.1 Definition 10g34.2.2.2 Method of measurement 10g34.2.2.3 Limits 10g34.2.3 Output field strength (H-fiel
11、d) 10g34.2.3.1 Definition 10g34.2.3.2 Method of measurement 10g34.2.3.3 Limits 10g34.2.3.3.1 Minimum transmitted field 10g34.2.3.3.2 Maximum transmitted field . 10g34.2.4 Transmitter spurious emissions . 11g34.2.4.1 Definition 11g34.2.4.2 Radiated H-field 11g34.2.4.2.1 Method of measurement ( 1 if f
12、c 4,78 MHz then He= Hm, (i.e. far field). The method allows an electric generated E-field to be measured as a magnetic generated H-field by adding a correction factor derived from (D.6). For a graphical representation of the correction factor, see figure D.1. ETSI ETSI EN 300 718-1 V2.1.1 (2018-01) 29 Figure D.1 -60-50-40-30-20-100100,001 0,01 0,1 1 10 100Correction factorforrelevant H-field, dB Frequency, MHzETSI ETSI EN 300 718-1 V2.1.1 (2018-01) 30 Annex E (informative): Change history Version Information about changes 2.1.1 Receiver sensitivity was added
