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 …
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“Primary Reference Clock VCH-001”
Secondary master oscillator model VCH-002 is intended for use as slave node clock in SDH networks.… ► “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.… ► “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.… ► “Primary Reference Source VCH-311C”
