VCL IEEE-1588v2 Slave
Time and Frequency Synchronization Solutions

Description

 VCL IEEE-1588v2 Slave is a high precision, yet cost efficient, Time and Frequency Synchronization solution which can be used to distribute synchronized time-of-day and frequency across all nodes of the network (using IEEE-1588v2 Master-Slave protocol) referenced to a single GPS, IEEE-1588 Master. Multiple IRIG-B Outputs are also provided at each location to synchronize local clock displays and RTUs and to a central IEEE-1588v2 Master timing source with nanosecond accuracy. The VCL 1588, Time and Frequency IEEE-1588v2 Slave are fully compatible with the VCL-GPS-Receiver and IEEE-1588-Master.

The VCL-1588-Slave is designed for the synchronization of 2G, 3G and LTE mobile telecommunications networks as well as backhaul wireline 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 need to distribute highly precise time-of-day and frequency synchronization across all nodes
of their networks.

The equipment provides a phase locked G.812, Type I and Type II quality frequency synchronization (when locked to its IEEE-1588 Master) reference. It also provides multiple time (IRIG-B) and frequency outputs that are also usually required by the users of such equipment.

The VCL-1588-Slave is equipped with a highly accurate, low-noise OCXO and a high precision DPLL (Digital Phase Locked Loop Clock), which provides a high stability holdover quality typical of an SSU in the eventuality of communication failure between the IEEE-1588 Master and the Slave units.

Management Interfaces and Software:
 

Product Highlights
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Related Products
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The VCL-1588-Slave can be managed by any Windows based PC connected to the equipment via a serial RS-232 or a USB connection, or over a 10/100BaseT Ethernet / IP link using Telnet or secured SSH communication protocol. A user friendly GUI is also provided that gives the “user” the ease for configuration, monitoring and management.

 

It provides an easy-to-use interface for configuring the unit and displaying its current status such as the visible GPS satellites, the unit’s operational state, the status of the outputs and power supplies etc.

 

The equipment may be monitored by the network administrator from a central location using SNMP. An NMS (Network Management Software), capable of monitoring up to 500 nodes over an IP network is provided free-of-charge along with the equipment. An MIB file is also provided for integration with third-party NMS.

 

The unit also provides an alarm relay contact for connecting an external audio or visual alarm.

Highlights:

  • Reliable, cost-efficient , IEEE-1588 Slave
  • Phase locked G.703 compliant E1, 2.048MBits, 1.544Mbits and 2.048 MHz outputs
  • Phase locked 10 MHz output
  • Standard RJ45 and BNC connectors for all inputs and outputs
  • ToD compliant to NMEA 0183 (DB9 Serial Port)
  • High stability holdover functionality:
    • ITU-T G.812 (Type I and Type II) compliant holdover.

Key Features:

  • IEEE-1588 Slave Clock

  • IPv4 and IPv6 compatible

  • Nanosecond ToD Accuracy

  • SSH, Telnet, SNMP V2 MIB

  • Password Protection

  • Redundant AC and DC power supply options

  • 4, 10/100BaseT 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.

  • Flow Control - allows the user to regulate the Ethernet based flow to minimize traffic congestion

  • Option to support jumbo frame sizes of up to 2048 Bytes.

Typical Synchronization Applications:

  • IEEE-1588 V2 Slave

  • IEEE-1588 V2 network (Master-Slave) synchronization

  • Synchronizing Cellular networks like UMTS, GPRS, 3G and LTE

  • Wireless and Wireline Telecom synchronization

  • Providing Time and Frequency reference for power utilities

  • 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.

Applications Diagrams:

2G / 3G / LTE - Typical Application in an IP Cloud
 



 


IEEE-1588 Master - Slave Network Architecture
 



 

Technical Specifications:

IEEE-1588 Server:

  • Compliant with IEEE-1588 v2 (2008) specifications

Ethernet Interfaces:

Number of Ports 4 Ports
Electrical

10/100 Auto-negotiation / MDI-X (Auto-sensing), Full-Half Duplex, RJ45 Electrical Connector
Maximum Frame Size 2048 Bytes (Jumbo Frames)
Protection Telcordia GR-1089-CORE Lightning and Power Contact

Standard Outputs:

Output Type Number Of Outputs Connector
1.544 Mbit/s (T1) compliant with ITU-T G.703 8 (8 T1 or 8 E1) RJ45
2.048 Mbit/s (E1) compliant with ITU-T G.703 8 (8 E1 or 8 T1) RJ45
2.048 MHz, 75 Ohms, phase-locked to IEEE-1588 Master 8 BNC
10 MHz, 50 Ohms, phase-locked to IEEE-1588 Master 1 BNC
IRIG-B, synchronized to IEEE-1588 Master 8 BNC
1 PPS, phase-locked to IEEE-1588 Master 1 BNC
TOD (Time-Of-Day) output compliant to NMEA0183 1 DB9, RS-232C


Optional Outputs:
 

  • Special connectors and/or impedances

 

Display – External (Local Time / UTC Time):

 

  • DD:MM:HH - Day-Month-Year

  • HH:MM:SS - Hours-Minutes-Seconds

 

Holdover clock and performance:

 

  • Ultra Low Noise High Stability OCXO

  • Frequency Stability: 0.5 ppb / day (@ +25°C)

  • Aging per day: 0.5 ppb / day

  • Aging per year: 50 ppb / year

  • PPS accuracy: < 7µs after 24 hours, at constant temperature

  • PPS accuracy: < 7µs after 8 hours, at variable temperature


Phase Noise:
 

@1 Hz -90 dBc/Hz
@10 Hz -120 dBc/Hz
@ 100 Hz -140 dBc/Hz
@1 KHz -150 dBc/Hz
@10 KHz -155 dBc/Hz
@100 KHz -155 dBc/Hz


Management and Monitoring Ports:

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

System Access, Control and Management Options:

  • Telnet

  • SSH

  • CLI Control Interface (HyperTerminal or VT100)

  • SNMP V2 Traps (MIB File provided)

Security and Protection

  • Password Protection

  • Secured Access via SSH V2

  • VLAN on monitoring and access port

Configuration and Monitoring Software:

  • Telnet, CLI
  • GUI (Graphical User Interface) - Runs on any PC operating on Windows XP, Windows 7 or Windows 8 OS.

Power Consumption

Power Consumption
  • < 25W during startup,
  • < 18W at steady state 23°C

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 power

  • AC plus DC (AC + DC), AC or DC

Environmental characteristics (Equipment):
 

Operational -40°C to +60°C (Typical: +25°C)
Storage -40°C to +75°C
Humidity 95% non-condensing

Mechanical Specifications

Rack mounting Standard 19-Inch. DIN Rack
Height   90.00 mm. (2U)
Depth   280.00 mm.
Width    480.00 mm.
Weight 4.20 kg.

 

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