External circuits for start-stop apparatus for alphabetic telegraphy, 5-element code. Types and basic parameters
Document status: Active
Instruments for measurements laser radiation parameters. General technical requirements
Document status: Withdrawn
Information protection. Protected operational systems. Means of detection of purposeful powerful electromagnetic impacts. General requirements
Document status: Active
Speech transmission over varies communication channels. Techniques for measurements of speech quality, intelligibility and voice identification
Document status: Active
Magnetic tapes for home video-recording. Methods of testing
Document status: Active
Photomultipliers. Measuring methods of light equivalent of anode dark current noise
Document status: Active
