• GPS-2145-SLAVE - IEEE-1588 Slave: Precision Time Protocol

VCL-2145-SLV (IEEE-1588v2 Slave Clocks)

Orion Telecom Offers Power Utility Solutions Oil & Gas Networks Solutions Railway & Metro Rail Solutions PTP IEEE-1588v2 GPS Primary Reference Clock Packet Optical Transport Multiplexers Teleprotection SCADA, FOTE, OLTE Digital Cross Connects Echo Cancellers IP/Ethernet over TDM 1+1 APS (Fail-Over) Solutions Monitoring Groomer Solutions


VCL-2145-SLV (IEEE-1588v2 Slave Clocks)
Product Overview

VCL-GPS IEEE-1588v2 PTP Grandmaster and Primary Reference Clock, NTP Server (IPv4 and IPv6), provides IRIG-B, 1PPS, NMEA, 1/5/10MHz, 2.048MHz, 2.048Mbits with SSM, 1.544Mbits GPS referenced clock outputs. OCXO and Rubidium Holdover Clock options available.

Data Sheet (PDF)

The VCL-GPS, IEEE-1588v2 PTP Grandmaster Receiver is specifically designed for the synchronization of 2G, 3G 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 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 equipment conforms to and provides a G.811 / Stratum 1 quality synchronization (GPS locked) reference while providing multiple time (IRIG-B) and frequency outputs that are usually required by the users of such equipment.

The VCL-GPS, GPS Receiver is equipped with an integrated GPS receiver and a highly accurate, low-noise OCXO / Rubidium oscillator which provides a high stability holdover quality typical of an SSU in the eventuality 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 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 5000 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.
Technical Specifications

GPS Receiver:

  • 50 Channel GPS Receiver
  • GPS L1 frequency, C/ACode Receiver
  • Tracks up to 12 satellites simultaneously
  • Synchronizing Time:
    • Cold Start (includes almanac acquisition time): 27 seconds
    • Time-To-Fix (almanac acquisition already completed): 1 second
    • (Note: with all satellites in view at -130db)

  • GPS Signal
    • Tracking and Navigation: -162 dBm
    • Reacquisition -160 dBm
    • Cold Start -148 dBm
  • Antenna Connector: SMA
  • Accuracy Of Time-Pulse Signal referenced to GPS: +/-30ns (raw)
  • Accuracy Of Time-Pulse Signal referenced to GPS: +/-15ns (compensated)
  • (Note: with all satellites in view at -130db)

    Management and Monitoring Ports

    • RS-232C Connector
    • USB Connector
    • 10/100BaseT Ethernet
    • 1 x External Alarm Relay Contact

    Power Supply Options

    • Dual Redundant
    • 1+1 AC power (100 to 240V AC, 50/60 Hz)
    • 1+1 DC 24V power
    • 1+1 DC -48V power
    • 1+1 DC 110/125V DC power
    • AC or DC

    Application Diagram

    GPS Receiver as a Primary Reference (PRC) Clock with IEEE-1588v2 Grandmaster and NTP Server

    GPS Receiver as a Primary Reference (PRC) Clock 
with IEEE-1588v2 Grandmaster and NTP Server