Primary reference clock (PRC) is intented for use as the redundant first class SDH synchronization equipment of digital networks telecommunication. PRC VCH-001 meets all requirements of ITU-T G.811.
VCH-001 is based on a Passive Hydrogen Maser having relative frequency accuracy … ► “Primary Reference Clock VCH-001”

Secondary master oscillator model VCH-002 is intended for use as slave node clock in SDH networks. In normal operation it is operating as a slave clock, traceable to a primary reference clock. For purposes of redundancy it has multiple reference … ► “Secondary Master Oscillator VCH-002”

VCH-1008C Primary Reference Source on the base of Passive Hydrogen Maser is intended to be used as the first class SDH synchronization equipment of digital telecommunication networks. Full digital processing of modulation and servo loop signals is realized. Extremely high … ► “Primary reference source VCH-1008C”

GPS/GLONASS primary reference source VCH-311C contains multi-channel GPS/GLONASS receiver, time scale comparison unit and automatically adjustable Rubidium reference oscillator.
The instrument is intended to be used as the first class SDH synchronization equipment of digital networks telecommunication.

Key applications
Digital … ► “Primary Reference Source VCH-311C”