The O-Series Recommendations specify measuring equipment for a wide range of applications. Reliable test equipment is an important prerequisite when maintaining telecommunication equipment and telecommunication networks. The reliability of measuring equipment can be affected by the environmental conditions to which the equipment is exposed during its use.
ITU-T O.3 SPANISH-1992 history
1992ITU-T O.3 SPANISH-1992 Climatic Conditions and Relevant Tests for Measuring Equipment - Specifications of Measuring Equipment (Study Group IV) 7 pp