?u= Wed, 06 Nov 2024 05:13:15 +0000 en-US hourly 1 https://wordpress.org/?v=6.7.1 ?u=/wp-content/uploads/2024/11/cropped-icon-150x150.png ?u= 32 32 ?u=/product/publishers/snz/nzs-66061988/ Wed, 06 Nov 2024 05:13:15 +0000 Broadcast teletext

Published By	Publication Date	Number of Pages
SNZ	1988-03-31	28

]]> Defines the teletext broadcasting system used in New Zealand. Describes: (a) the formation of binary code groups into data-lines for inclusion in the television field-blanking interval; (b) how the control and address information carried on each data-line, together with the special page-header data-lines and the sequence of transmission of the data-lines, allows the data-lines corresponding to the rows of a selected page to be identified; and (c) the method by which the character codes received on the data-lines corresponding to the rows of the selected page are interpreted to give the page display. Additional requirements are given for the transmission of closed caption data by teletext, and an appendix gives details of an enhanced teletext system which may eventually be introduced in New Zealand.

]]> ?u=/product/publishers/snz/nzs-66051988/ Wed, 06 Nov 2024 05:13:15 +0000 Compatibility of television broadcast receivers with broadcast signals

Published By	Publication Date	Number of Pages
SNZ	1988-03-31	28

]]> Describes the technical characteristics of the television signals broadcast in New Zealand, the carrier frequencies allocated to this service, and other parameters relating to the performance of receivers and receiving antennae. Specifies certain design characteristics of receivers and receiving antennae that are necessary or desirable for satisfactory reception in the presence levels of interference considered likely to occur in New Zealand.

]]> ?u=/product/publishers/snz/nzs-66021983/ Wed, 06 Nov 2024 05:13:14 +0000 Compatibility of VHF-FM sound broadcast receivers with broadcast signals

Published By	Publication Date	Number of Pages
SNZ	1983-02-28	21

]]> Describes the technical characteristics of the VHF-FM signals broadcast in New Zealand, the carrier frequencies allocated to this service, and other parameters relating to the performance of receivers and receiving antennae. Specifies certain design characteristics of receivers and receiving antennae that are necessary or desirable for satisfactory reception in the presence of the levels of interference considered likely to occur in New Zealand.

]]> ?u=/product/publishers/iec/iec-ieee-62704-12017/ Tue, 05 Nov 2024 20:14:56 +0000 Determining the peak spatial-average specific absorption rate (SAR) in the human body from wireless communications devices, 30 MHz to 6 GHz - Part 1: General requirements for using the finite difference time-domain (FDTD) method for SAR calculations

Published By	Publication Date	Number of Pages
IEC	2017-10-26	86

]]> IEC/IEEE 62704-1:2017(E) defines the methodology for the application of the finite-difference time domain (FDTD) technique when used for determining the peak spatial-average specific absorption rate (SAR) in the human body exposed to wireless communication devices with known uncertainty. It defines methods to validate the numerical model of the device under test (DUT) and to assess its uncertainty when used in SAR simulations. Moreover, it defines procedures to determine the peak spatial-average SAR in a cubical volume and to validate the correct implementation of the FDTD simulation software. The applicable frequency range is 30 MHz to 6 GHz.
This document does not recommend specific SAR limits since these are found elsewhere, for example, in the guidelines published by the International Commission on Non-Ionizing Radiation Protection (ICNIRP) [1] or in IEEE Std C95.1 [3].
Key words: Spatial-Average Specific Absorption Rate, Finite-Difference Time-Domain, Human Body

]]> ?u=/product/publishers/iec/iec-tr-631002017/ Tue, 05 Nov 2024 20:07:53 +0000 Transmitting equipment for radiocommunication - Radio-over-fibre technologies for spectrum measurement - 100-GHz spectrum measurement equipment

Published By	Publication Date	Number of Pages
IEC	2017-07-26	26

]]> IEC 63100:2017(E) describes 100-GHz spectrum measurement methods using RoF technologies. It covers the background to measurement over 100 GHz, the configuration of a spectrum analyser, the key technologies, such as mm-wave tunable filter, and RoF-technologies-based local oscillator, and provides some measured examples.

]]> ?u=/product/publishers/iec/iec-tr-63099-22020/ Tue, 05 Nov 2024 20:07:53 +0000 Transmitting equipment for radiocommunication - Radio-over-fibre technologies for electromagnetic-field measurement - Part 2: Radio-over-fibre technologies for electric-field sensing

Published By	Publication Date	Number of Pages
IEC	2020-07-27	20

]]> IEC TR 63099-2:2020 provides information about the current and latest applications for electric-field measurement that use radio-over-fibre technologies. System configurations, specifications, and measurement examples of each electric-field measurement system are included. The theoretical background of electric-field measurement and calibration method of electric-field sensors are beyond the scope of this document.

]]> ?u=/product/publishers/iec/iec-tr-63098-12017/ Tue, 05 Nov 2024 20:07:52 +0000 Transmitting equipment for radiocommunication - Radio-over-fibre technologies and their performance standard - Part 1: System applications of radio over fibre technology

Published By	Publication Date	Number of Pages
IEC	2017-09-25	26

]]> IEC 63098-1:2017(E) provides information on the current and latest applications of radio-over-fibre technology. Wireless communication, broadcasting, and airport multilateration systems, which are already implemented or will be in the near future, are introduced. This document includes the basic concept, a brief outline and related standards of the applications of RoF technology.

]]> ?u=/product/publishers/iec/iec-tr-63099-12017/ Tue, 05 Nov 2024 20:07:52 +0000 Transmitting equipment for radiocommunication - Radio-over fibre technologies for electromagnetic-field measurement - Part 1: Radio-over-fibre technologies for antenna measurement

Published By	Publication Date	Number of Pages
IEC	2017-08-09	30

]]> IEC TR 63099-1:2017(E) provides information about the current and latest applications for antenna measurement that use radio-over-fibre technologies. Antenna gain and the antenna radiation pattern measurement system are covered, which are practically in use and will be used soon. Basic concepts, system configurations and measurement examples of the systems are included.

]]> ?u=/product/publishers/iec/iec-pas-625932008/ Tue, 05 Nov 2024 19:59:24 +0000 Measurement method of a half-wavelength voltage for Mach-Zehnder optical modulators in wireless communication and broadcasting systems

Published By	Publication Date	Number of Pages
IEC	2008-11-13	40

]]> IEC/PAS 62593:2008(E) gives a measurement method of half-wavelength voltage applicable to Mach-Zehnder optical modulators in wireless communication and broadcasting systems. In addition, this method is also effective for the estimation of the intermodulation distortion of Mach-Zehnder optical modulators.
– Frequency range: 10 MHz to 30 GHz.
– Wavelength band: 0,8 µm, 1,0 µm, 1,3 µm and 1,5 µm.
– Electro-optic material based Mach-Zehnder optical modulators and their modules.

]]> ?u=/product/publishers/iec/iec-628032016/ Tue, 05 Nov 2024 19:53:02 +0000 Matériels émetteurs pour les radiocommunications - Réponse en fréquence des dispositifs de conversion optique-électrique dans des systèmes de transmission radio sur fibre haute fréquence - Méthode de mesure

Published By	Publication Date	Number of Pages
IEC	2016-07-12	54

]]> Matériels émetteurs pour les radiocommunications - Réponse en fréquence des dispositifs de conversion optique-électrique dans des systèmes de transmission radio sur fibre haute fréquence - Méthode de mesure

Published By	Publication Date	Number of Pages
IEC	2016-07-12	54

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