VCL-2112 P, PTP Slave Clock

PTP IEEE-1588v2 Slave Clock for ToD (Time of Day) and Frequency Synchronization

Product Overview

VCL-2112 P, PTP Slave Clock is a high precision, high reliability time and frequency synchronization solution which can be used to synchronize with an IEEE-1588v2 PTP Grandmaster to provide reference frequency and time-of-day synchronization across all nodes of a PTP network. Multiple 1PPS / 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.

Data SheetIEEE-1588v2

The VCL-2112 P, PTP Slave Clock is specifically designed for the synchronization of 2G, 3G and LTE mobile telecommunications networks as well as backhaul wire-line TDM 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 frequencies locked to a PTP Grandmaster (GPS) Reference across all nodes of their networks.

The VCL-2112 P, PTP Slave Clock is equipped highly accurate, low-noise OCXO which provides a high stability holdover that is typical of an SSU in the event of a failure of the transmission link.

Application Diagram

VCL-2112 P, PTP Slave Clock

Model Description
VCL-PTP-2112 P, PTP Slave Clock VCL-2112 P, PTP (IEEE-1588v2) Slave Clock - synchronizes to PTP Grandmaster to provide 1PPS, NMEA, 1/5/10MHz, 2.048MHz, 1.544Mbits / 2.048Mbits Frequency Outputs with high stability OCXO holdover.

Features and Highlights

  • Reliable, Cost-Efficient Reference
  • BCMA (Best Master Clock Algorithm) - allows the unit to be installed in a redundant PTP Grandmaster network
  • OCXO Holdover
  • 1/5/10 MHz output
  • 1 PPS / IRIG-B outputs
  • Nanosecond accuracy
  • Standard RJ45 and BNC connectors for all inputs and outputs
  • ToD compliant to NMEA 0183 (DB9 Serial Port).

Additional Features:

  • Password Protection
  • Redundant AC and DC power supply options
  • 4, 10/100BaseT 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
  • Supports QoS, 802.1p based packet priority.
  • Supports 802.1Q based VLANs.
  • Power Contact and Lightening Protection as per Telcordia GR-1089-CORE.

Technical Specifications

Management and Monitoring Ports:

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

System Access, Control and Management Options:

  • Telnet
  • CLI Control Interface (HyperTerminal or VT100)
  • SNMP V2 Traps (MIB File provided).

Security and Protection:

  • Password Protection
  • Separate VLAN on monitoring and access.

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 Supply Options:

  • 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


  • Operational -40°C to +60°C (Typical: +25°C)
  • Cold Start -20°C to +60°C
  • Storage -40°C to +75°C
  • Humidity 95% non-condensing
  • Cooling Convention Cooled
  • No cooling fans are required.

Mechanical Specifications

Mechanical Specifications Option 1 (Single Output Port): Option 2 (Eight IRIG-B / Frequency Output Ports):
Rack mounting Standard 19-Inch. DIN Rack Standard 19-Inch. DIN Rack
Height 44.00 mm. (1RU) 90.00 mm. (2RU)
Depth 280.00 mm. 280.00 mm.
Width 480.00 mm. 480.00 mm.
Weight 3.20 kg. 4.20 kg.

Data Sheet

Data Sheet