The VCL-3048 NTP Time Server is designed to provide NTP clock that is locked to a GPS / GNSS reference to provide time synchronization to private networks such as Railways and Metro (ticketing and platform) networks, Airports and Air-Traffic Control facilities, Electric Sub-Stations, Power Distribution and Transmission companies, Oil and Gas Utilities, ISPs and Cable TV networks as well as to Campus networks that are required to maintain a complete isolation from public networks for security reasons. It may be also used by 2G, 3G and LTE service providers which provide a time of day reference to their customers over their wireless networks.
The VCL-3048 is equipped with a highly accurate, TCXO to provided a high stability holdover clock in the event of unavailability of the GPS / GNSS signal, or GPS / GNSS antenna failure, or a temporary loss of reception in a totally isolated network without any external reference.
The VCL-3048 provides remote management and monitoring facility with a password based access using SSH as well as MD5 authentication to ensure operational reliability and security. Additional features include remote login and remote firmware upgrade (file transfer) capabilities. VCL-3048 includes complete SNMP monitoring as well as support for enterprise directory services for user authentication, internal and external logging and monitoring of alarm and error messages through Syslog ensures a high level of system manageability. Other features include DHCP for installation convenience and support concurrent IPv4/IPv6 networks to provide NTP time and frequency synchronization.
NTP Server for accurate time-stamping Incorrect time-stamp on CCTV Camera feed
Secure network management: enable or disable options
Temperature Compensated quartz oscillators (TCXO) hold-over
DC or AC Power Supply options.
The VCL-3048 provides a 10/100 BaseT Industrial Ethernet NTP Port that meets and complies with “Power Contact and Lightening Protection” as per Telcordia GR-1089-CORE and EN61000-4-5 Level 3 specifications making it suitable for the equipment to be installed in harsh industrial environments which include Electric Sub-Stations, Railway and Metro Networks.
VCL-3048 provides a better than 30 nanosecond accuracy to assure high bandwidth NTP Performance of better than 3000 NTP requests per second.
Monitoring and Management
The configuration can be managed by Graphical User Management Interface. A text based and menu driven setup utility is also available via Telnet or SSH. An optional Graphical User Network Management Interface (NMS) allows multiple systems installed on a networks to be monitored and configured from a single or multiple management locations.
GPS/GNSS Receiver Specifications:
50 Channel GPS Receiver
72 Channel GNSS Receiver
GPS L1 frequency, C/A Code Receiver
Tracks up to 12 satellites simultaneously
Acquisition time - Hot Start: 1 sec.
Acquisition time - Warm Start: 28 sec.
Acquisition time - Cold Start: 28 sec.
GPS / GNSS Signal:
Tracking and Navigation: -162 dBm
Reacquisition -160 dBm
Cold Start -148 dBm
Antenna Connector: TNC
Accuracy Of Time-Pulse Signal referenced to GPS: ± 30ns (raw)
Accuracy Of Time-Pulse Signal referenced to GNSS: ± 20ns (raw)
Accuracy Of Time-Pulse Signal referenced to GPS/GNSS: ± 15ns (compensated) (Note: with all satellites in view at -130db).