1、INTERNATIONALSTANDARDIEC60489-31988AMENDMENT 11999-04Amendment 1Methods of measurement for radio equipmentused in the mobile services Part 3:Receivers employing A3E,F3Eor G3E emissionsAmendement 1Mthodes de mesure applicables au matrielde radiocommunication utilis dans les services mobiles Partie 3:
2、Rcepteurs conus pour les missions A3E,F3E ou G3EPRICE CODE IEC 1999 Copyright-all rights reservedInternational Electrotechnical Commission3,rue de Varemb Geneva,SwitzerlandTelefax:+41 22 919 0300e-mail:inmailiec.ch IEC web site http:/www.iec.chXFor price,see current catalogue Commission Electrotechn
3、ique Internationale International Electrotechnical CommissionLICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 60489-3 Amend.1 IEC:1999(E)FOREWORDThis amendment has been prepared by IEC technical committee 102:Equipment used in radioco
4、mmunications for mobile services and for satellite communication systems.The text of this amendment is based on the following documents:FDISReport on voting102/42/FDIS102/50/RVDFull information on the voting for the approval of this amendment can be found in the report onvoting indicated in the abov
5、e table.A bilingual version of this amendment may be published at a later date.Amend the title of this standard on the cover page,the title page and on pages,7 and 11 asfollows:METHODS OF MEASUREMENT FOR RADIO EQUIPMENT USEDIN THE MOBILE SERVICES Part 3:Receivers employing A3E,F3E or G3E emissionsPa
6、ge 3CONTENTSReplace the title of clause 7 by the following:7 Sensitivity.Insert after clause 14,the title of the following new clause 15:15 Expander characteristics.Re-number the existing clauses 15 to 21 as clauses 16 to 22,respectively.Delete the title of the current clause 22.Replace the title of
7、 the current clause 23 by the title of new clause 23:23 Receiver output power.Re-number clause 24 as clause 25.Delete the title of clause 25.Add the title of the following new clause 36:36 Impulsive-noise tolerance(integral antenna).LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS
8、 LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.60489-3 Amend.1 IEC:1999(E)3 Page 3Delete the appendices F to L inclusive.Add the following new annexes:Annex M Rayleigh fading simulators.Annex N Accuracy for diversity receiver sensitivity measurement.Page 7PREFACEAdd,on page 9,after 489-1(1983),the fo
9、llowing:Amendment 1(1986)Amendment 2 1)Insert,before 489-6(1987)the following:IEC 60489-2(1991):Part 2:Transmitters employing A3E,F3E and G3E emissionsAmendment 11)Add the following footnote,referring to both amendment 2 of IEC 60489-1 and amendment 1 ofIEC 60489-2:Add,under 489-6(1987)the following
10、:ITU-T Recommendation O.41(19/94):Psophometer for use on telephone-type circuits.Page 11SECTION ONE GENERAL1 ScopeReplace the text of this clause by the following:This standard refers specifically to mobile radio receivers having audio-frequency bandwidthsgenerally not exceeding 10 kHz for the recep
11、tion of voice and other types of signals,using:a)angle modulation(frequency modulation(F3E)/phase modulation(G3E),orb)double-sideband amplitude modulation with full carrier(A3E).This standard is intended to be used in conjunction with IEC 60489-1.The supplementaryterms and definitions and the condit
12、ions of measurement set forth in this standard are intendedfor type tests and may also be used for acceptance tests.1)To be published.LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.4 60489-3 Amend.1 IEC:1999(E)Page 215.10.1 Limitation
13、 of the audio-frequency bandReplace the text of this subclause by the following:Because some properties,for example noise and audio-frequency harmonic distortion,dependupon the audio-frequency bandwidth,reproducible results can be obtained only when the bandof audio-frequencies occupied by the demod
14、ulated signal is restricted to specified limits.This restriction may be accomplished by means of a band-limiting filter preceding any audio-frequency measuring device and adapted to the type of signals to be transmitted.The filter maybe incorporated within the measuring equipment.When measuring resi
15、dual hum and noise,only the low-pass portion of the filter should be specified.In the case of speech transmission,the filter shall be in accordance with the psophometric filterdescribed in ITU-T Recommendation O.41(see table 1).Table 1 Characteristics of the psophometric filterFrequencyHzRelative we
16、ightingdBLimitdB 16,66 50 100 200 300 400 500 600 700 800 9001 0001 2001 4001 6001 8002 0002 5003 0003 5004 0004 5005 0006 00085,063,041,021,010,6 6,3 3,6 2,0 0,9 0+0,6+1,0 0 0,9 1,7 2,4 3,0 4,2 5,6 8,515,025,036,043,0222111110(reference)1111111112333LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.60489-3 Amend.1 IEC:1999(E)5 Page 236.4 Radio-frequency coupling device(RFCD)Replace the text of this subclause by the following:The mea
