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Primary Reference Clock with IEEE-1588v2 PTP Grandmaster and NTP

VCL-GPS-2145 Master: Provides IRIG-B, 1PPS, NMEA, 1/5/10MHz, 2.048MHz, 2.048Mbits, 1.544Mbits GPS referenced clock outputs.


VCL-GPS-2145, Primary Reference Clock with IEEE-1588v2 PTP Grandmaster and NTP Server is a high precision, multi-service, cost efficient time and frequency synchronization solution which can be used to provide ITU-T, G.811 reference frequencies which are referenced to a GPS source, as well as to synchronize the time-of-day and frequency across multiple nodes of the network. The VCL-GPS Receiver has an integrated, high bandwidth NTP Server engine that is capable of handling up to 7200 NTP requests per second. Multiple IRIG-B Outputs are also provided to synchronize local clock (time-of-day) display units as well as RTUs to a central timing source with nanosecond accuracy.

he VCL-GPS-2145, Primary Reference (PRC) Clock is specifically designed for the synchronization of 2G, 3G, HetNet and LTE mobile telecommunications networks as well as backhaul wire-line SDH / SONET and Synchronous Ethernet networks. It may be also used by Railways, Airports (including air-traffic control), Power generation and distribution companies and other Utility companies who not only require a highly precise time-of-day and G.811 frequency synchronization locked to a GPS Reference but who also need to distribute highly precise time-of-day and frequency synchronization across all nodes of their networks.

The VCL-GPS-2145 is always locked to a GPS reference to provide multiple G.811 / Stratum 1 quality frequency and time-of-day (IRIG-B and NTP) outputs. The VCL-GPS-2145 is also equipped highly accurate, low-noise OCXO / Rubidium oscillator which provides a high stability holdover clock that is typical of a Network SSU in the event of the GPS signal or its antenna failure.


Features and Highlights

  • Reliable, Cost-Efficient Reference GPS Receiver
  • 50 Channel GPS, L1 frequency, C/A Code Receiver
  • Simultaneous tracking of up to 12 GPS satellites
  • ITU-T G.811 Primary Reference (PRC) Clock
  • GPS locked G.703 compliant E1, 2.048MBits, 1.544Mbits and 2.048 MHz outputs
  • Primary reference and holdover functionality:
    • ITU-T G.811 / Stratum 1 compliant (PR) Primary Reference when locked to GPS
    • ITU-T G.812 compliant holdover
  • SSM Message format Compliant with ITU-T G.704. Optional GR-378-CORE for SONET Networks.
  • 1/5/10 MHz output
  • 1 PPS outputs
  • IEEE-1588v2 Precision Time Protocol PTP Grandmaster
  • PTP Grandmaster support for up to 32 PTP Clients
  • Nanosecond accuracy
  • IRIG-B outputs
  • Standard RJ45 and BNC connectors for all inputs and outputs
  • ToD compliant to NMEA 0183 (DB9 Serial Port).

Additional Features:

  • High bandwidth NTP Server capable of supporting up to 7200 NTP requests per second.
  • Separate, independent, IEEE-1588 and NTP Server engines
  • IPv4 and IPv6 compatible NTP Server
  • SSH, Telnet, Radius, SNMP V2 MIB
  • Password Protection
  • Redundant AC and DC power supply options
  • 4, 10/100/1000BaseT Network Interface Ethernet Ports
  • 2 x 10/100/1000BaseT Network Interface Ethernet Ports
  • 2 x 1000BaseSX/LX Network Interface Ethernet Ports
  • VLAN and Packet priority feature - allows the user to assign priorities to different types of clients
  • Supports QoS, 802.1p based packet priority.
  • Supports 802.1Q based VLANs.
  • Power Contact and Lightening Protection as per Telcordia GR-1089-CORE.

Typical Synchronization Applications:

  • Synchronizing Cellular networks like UMTS, GPRS, 3G and LTE
  • Power generation and distribution companies and other utility companies
  • Wireless and Wireline Telecom synchronization
  • Distributing Time (ToD) and Frequency reference for power utilities across all nodes of the network
  • Synchronization of Defense Networks
  • Synchronizing airports and aviation communications
  • Synchronizing railway signaling networks and railway communications
  • Synchronizing traffic management
  • Broadcasting Network and Broadcast equipment synchronization.
Model Description
1.   GPS, IEEE-1588v2 PTP Grandmaster and Primary Reference Clock
VCL-GPS-2145, Primary Reference (PRC) Clock VCL-GPS-2145, Primary Reference (PRC) G.811 Clock. Provides 1PPS, NMEA, 1/5/10MHz, 2.048MHz, 2.048Mbits with SSM, 1.544Mbits Frequency Outputs with High Stability OCXO and Rubidium (G.812) Holdover Clock options.

VCL-GPS-2145, Primary Reference (PRC) G.811 Clock and PTP Grandmaster (IEEE-1588v2) with NTP Server. May be used in multi-service applications as a G.811, Primary Reference (PRC) Clock as well as a IEEE-1588v2 PTP Grandmaster and NTP Server (IPv4 and IPv6). Provides IRIG-B, 1PPS, NMEA, 1/5/10MHz, 2.048MHz, 2.048Mbits with SSM, 1.544Mbits GPS referenced outputs. OCXO and Rubidium (G.812) Holdover Clock options available.
2.   PTP (IEEE-1588v2) Slaves
VCL-GPS-2145, (IEEE-1588v2) PTP Slave for ToD (Time of Day) and Frequency Synchronization PTP (IEEE-1588v2) Slave - synchronizes to PTP Grandmaster to provide IRIG-B, 1PPS, NMEA, 1/5/10MHz, 2.048MHz, 2.048Mbits outputs. OCXO and Rubidium Holdover Clock options available.
PTP (IEEE-1588v2 Slave) for ToD (Time of Day) Synchronization. PTP (IEEE-1588v2) Slave - synchronizes to PTP Grandmaster to provide IRIG-B, 1PPS, NMEA, 2.048MHz, 2.048Mbits outputs.

 

Application 1:

Application 2:

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