Secondary Master Oscillator VCH-002
Secondary master oscillator model VCH-002 is intended to be used as second class sychronization equipmentSDH gigital telecommunacation networks. In tracings several external clock referencesignals coming from network, filtering, restoring their purity and quality provides redundant reference clock synchronization signals 2048 kHz or 2048 kbps for telecommunication equipment.
Secondary master oscillator contains:
- rubidium GPS/GLONASS Primary Reference Source VCH-311C;
- signal Synchronization Unit (SSU) — Oscilloquartz 5548C;
Secondary master oscillator VCH-002 characteristics completely meet the requirements of ITU-T G.812. In addition to this, Rubidium GPS/GLONASS Primary Reference Source VCH-311, having the frequency accuracy better than 3×10–12, can be used as a reserved timing source that meets the requirements of the first class synchronization equipment ITU-T G.811.
Built in frequency comparison system based on the Oscilloquartz 5548C monitoring system and the GLONASS/GPS PRS VCH-311C provides PRC diagnostics and self-calibration.
Oscilloquartz 5548C Network Synchronization Unit (Smart SSU) is specially designed to provide the best timing and SDH network. It has E1 and T1 signals inputs. Smart SSU is a modular, fully redundant timing distribution system for 2048 kbps primary rate networks. The unit tracks incoming clock references, qualifies the signals against network timing standards, then filters and distributes precise timing to all equipment in the node.
Incoming reference signals come from, GPS reference sources, or E1 signals. Smart SSU meets ETSI and ITU-T synchronization standards and provides holdover that exceeds the reqirement for stratum-2 transit and local node performance.
Oscilloquartz 5548C has a vast memory of up to 1000 events. If jitter, excessive pointer adjustments, operator errors, frequency standard failure or transmission problems in the network occur, the unique system Oscilloquartz 5548C provides insurance from slips switching over the reserve inputs.
Full data monitoring and functions control (local or remote throught network) performs by pesonal computer.
Software: Software for local control and monitoring is applied.
Power: DC: (38.4÷57.6) V, two inputs.
Power consumption: 450 W.
Dimensions (W×H×D): 600mm×2020mm×600mm.
Weight: 130 kg.
Warranty: 3 years.
Life time: 15 years.