IEC 61252 pdf download
IEC 61252 pdf download.Electroacoustics – Specifications for personal sound exposure meters 1 Scope 1.1 Sound exposure is a physical measure that accounts for both the sound pressure and its duration, at a given location, through an integral-over-time of the square of instantaneous frequency-weighted sound pressure. 1.2 This International Standard is applicable to instruments for measurement of A-frequency- weighted sound exposure...
IEC 62065 pdf download
IEC 62065 pdf download.Maritime navigation and radiocommunication equipment and systems – Track control systems 1 Scope This International Standard specifies the minimum operational and performance requirements, methods of testing and required test results conforming to performance standards adopted by the IMO in resolution MSC.74(69) Annex 2 Recommendations on Performance Standards for Track Control Systems. In addition it takes into account...
IEC 60325 pdf download
IEC 60325 pdf download.Radiation protection instrumentation – Alpha, beta and alpha/beta (beta energy >60 keV) contamination meters and monitors 1 Scope and object This International Standard is applicable to radiation meters and monitors designed for the direct measurement or the direct detection of surface contamination by alpha and/or beta radiation emitting nuclides and which comprise at least: – a detection...
IEC 62289 pdf download
IEC 62289 pdf download.Video recording – Helical-scan digital video cassette recording format using 12,65 mm magnetic tape and incorporating MPEG-2 compression 1 Scope This standard specifies the formatting for the recording of data blocks containing MPEG-2 compressed video, multiple channels of AES3 audio and associated data which form helical records on 12,65 mm tape in cassettes. This standard also defines...
IEC 60846 pdf download
IEC 60846 pdf download,Radiation protection instrumentation – Ambient and/or directional dose equivalent (rate) meters and/or monitors for beta, X and gamma radiation 1 Scope and object This International Standard applies to dose equivalent (rate) meters and/or monitors for the measurement of ambient dose equivalent (rate) and/or directional dose equivalent (rate) from external beta, X and gamma radiation, as recommended in...
IEC 60749-3 pdf download
IEC 60749-3 pdf download.Semiconductor devices – Mechanical and climatic test methods 1 Scope The purpose of this part of IEC 60749 is to verify that the materials, design, construction, markings, and workmanship of a semiconductor device are in accordance with the applicable procurement document. External visual inspection is a non-destructive test and applicable for all package types. The test is...
IEC 60749-32 pdf download
IEC 60749-32 pdf download.Semiconductor devices – Mechanical and climatic test methods 1 Scope and object This part of IEC 60749 is applicable to semiconductor devices (discrete devices and integrated circuits). The object of this test is to determine whether the device ignites due to external heating. The test uses a needle flame, simulating the effect of small flames which may...
IEC 61811-10 pdf download
IEC 61811-10 pdf download.Electromechanical elementary relays of assessed quality 1 General 1.1 Scope This part of IEC 61811 is a sectional specification applicable to electromechanical elementary (non-specified time all-or-nothing) relays of assessed quality for industrial application. NOTE Electromechanical all-or-nothing telecom relays of assessed quality are covered by IEC 61811-50. It is based on the basic relay standard IEC 61810-1 as...
IEC 60749-7 pdf download
IEC 60749-7 pdf download.Semiconductor devices – Mechanical and climatic test methods 3 Test apparatus The apparatus for testing the internal water vapour content and that of other gases shall be as follows for the chosen method. 3.1 Method 1 Method 1 measures the water vapour content of the device atmosphere by mass spectro- metry. The apparatus for method 1 shall...
IEC 61811-55 pdf download
IEC 61811-55 pdf download.Electromechanical all-or-nothing relays 1 General 1.1 Scope This part of IEC 61811 is a blank detail specification applicable to electromechanical all-or- nothing telecom relays of assessed quality. Relays according to this standard are provided for the operation in telecommunication applications. However, as electromechanical all-or- nothing relays, they are also suitable for particular industrial and other applications. This...