CEI/IEC 914-1988 pdf free download. Conference systems-Electrical and audio requirements. CEI/IEC 914-1988 applies to conference systems and to the parts of which they are composed or which are used as auxiliaries to such systems (headphones, microphones, amplification...
BS ISO 22259:2019 pdf download
BS ISO 22259:2019,Conference systems — Equipment — Requirements.BS ISO 22259:2019 pdf free download. BS ISO 22259:2019 specifies requirements for typical conference systems, the parts they are composed of, the auxiliary devices necessary for their use (such as...