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VCL-2750 PTP Slave Clock Overview

The VCL-2750 is a PTP slave clock that provides precise time and frequency synchronization across networks. It synchronizes to a PTP grandmaster and outputs 1PPS, IRIG-B, and NMEA time-of-day signals with nanosecond accuracy. Key features include an OCXO for holdover stability, management interfaces, and environmental ruggedness suitable for telecom and utility applications.
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0% found this document useful (0 votes)
88 views2 pages

VCL-2750 PTP Slave Clock Overview

The VCL-2750 is a PTP slave clock that provides precise time and frequency synchronization across networks. It synchronizes to a PTP grandmaster and outputs 1PPS, IRIG-B, and NMEA time-of-day signals with nanosecond accuracy. Key features include an OCXO for holdover stability, management interfaces, and environmental ruggedness suitable for telecom and utility applications.
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VALIANT

COMMUNICATIONS VCL-2750
IEEE-1588v2 PTP Slave
DIN Rail Version
Introduction: Application Diagram:
VCL-2750, PTP Slave Clock (DIN Rail Version) is a high
precision, high reliability time and frequency IEEE-1588v2 (PTP)
INPUT
synchronization solution which can be synchronized from
a IEEE-1588v2 PTP Grandmaster to provide frequency and Power
Supply
VCL-2750-PTP DIN Rail
time-of-day synchronization across a PTP network with 1588v2 SLAVE Version
(DC)
nanosecond accuracy. Multiple 1PPS / IRIG-B Outputs are
provided to synchronize local clock (time-of-day) to IEDs, OUTPUTS
4 x 1PPS / IRIG-B
as well as RTUs to a central timing source.
(4 BNC Outputs)
4 x NMEA 0183 ToD
(Time-of-Day) (4 RJ45 Outputs)

Additional Features:
! 1 x PTP Input (10/100BaseT Ethernet Slave Port)
! Password Protection
! 48V DC power supply
! 1 x OAM (10/100BaseT Ethernet Port)
! VLAN and Packet priority
! Supports QoS, 802.1p based packet priority.
The VCL-2750, PTP Slave Clock is specifically designed for
! Supports 802.1Q based VLANs.
providing synchronization in 2G/3G/4G, HetNet and LTE
! Power Contact and Lightening Protection as per
mobile telecommunications networks as well as in
Telcordia GR-1089-CORE.
backhaul wire-line TDM Networks. It may be also used by
Railways, Airports (including air-traffic control), Power
VCL-2750, PTP Slave Clock (DIN Rail Version)
generation and distribution companies and other Utility
companies who need to distribute highly precise time-of- Description: VCL-2750, PTP (IEEE-1588v2) Slave Clock -
day and frequencies locked to a PTP Grandmaster (GPS) synchronizes from PTP Grandmaster to provide 1PPS, IRIG-
Reference across multiple nodes of their networks. B and NMEA Outputs with high stability OCXO holdover.

The VCL-2750, PTP Slave Clock is equipped with a highly Typical Synchronization Applications
accurate, low-noise OCXO which provides a high stability
! Synchronizing mobile communication networks such
holdover that is typical of a Network SSU in the event of a
as UMTS, GPRS, HetNet, 2G, 3G, and 4G networks
failure of the transmission link.
! Wireless and Wireline Telecom synchronization
! Distributing Time (ToD) and Frequency reference for
Features and Highlights:
power utilities across all nodes of the network
! Reliable, Cost-Efficient Reference ! Synchronization of Defense Networks
! BMCA (Best Master Clock Algorithm) - allows the unit to ! Synchronizing airports and aviation communications
be installed in a redundant PTP Grandmaster network ! Synchronizing railway signaling networks and railway
! OCXO Holdover communications
! 1 PPS / IRIG-B outputs ! Synchronizing traffic management
! Nanosecond accuracy ! Broadcasting Network and Broadcast equipment
! Standard RJ45 and BNC connectors for all inputs and synchronization.
outputs
! ToD compliant to NMEA 0183 (RJ45 Port).

www.valiantcom.com 1
Valiant Communications Limited VCL-2750

Time Inputs: Environmental:


Input Type Connector Operational -20°C to +60°C (Typical: +25°C)
IEEE-1588v2 (PTP) RJ45 Cold Start -10°C to +60°C
Storage -40°C to +75°C
Standard Frequency and ToD Outputs: Humidity 95% non-condensing
Output Type Connector Cooling Convention Cooled
4 x 1 PPS or 4 x IRIG-B BNC No cooling fans are required.
Synchronized to PTP Grandmaster*
4 x TOD (Time-Of-Day) output RJ45 Mechanical Specifications:
compliant to NMEA0183 Height 73 mm.
*Note: User selectable between IRIG-B and 1PPS Depth 190 mm.
Outputs Width 190 mm.
Weight 1.0 kg.
Management and Monitoring Ports:
! USB Ordering Information
! 10/100BaseT Ethernet
VCL-2750 VCL-2750, PTP (IEEE-1588v2) Slave Clock
! 1 x External Alarm Relay Contact.
DIN Rail Mount,
- Synchronizes to PTP Grandmaster to
System Access, Control and Management Options:
provide 1PPS, NMEA, IRIG-B Outputs
! Telnet with high stability OCXO Holdover
! CLI Control Interface (HyperTerminal or VT100) - Management: SNMP, Telnet (RJ45 (F)
! SNMP V2 Traps (MIB File provided). Port), Serial Port (USB), EMS,
Graphical User Interface (GUI)
Security and Protection: - Installation Kit: System Core Cables,
Mounting Hardware, Documentation,
! Password Protection
User Manual
! 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, Windows 8,
Windows 10 OS.

Revision 1.6 – September 14, 2018

U.K. U.S.A. INDIA

Valiant Communications (UK) Ltd Valcomm Technologies Inc. Valiant Communications Limited
Central House Rear Office 4000 Ponce de Leon, Suite 470 71/1, Shivaji Marg,
124 High Street, Hampton Hill, Coral Gables, FL 33146 New Delhi - 110015,
Middlesex, TW12 1NS, U.K. U.S.A. India

www.valiantcom.com 2

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