SyncServer S250

*Product has been Manufactured Discontinued and Replaced by SyncServer S600 and SyncServer S650

GPS Network Time Server with Timing Enhancements – Part Number: 1520R-S250

Next Generation ready, the SyncServer® S250™ is a GPS Network Time Server with multiple and versatile timing configurations. It provides ultra precise time and frequency outputs and redundant back-up, essential for Next Generation IT networks that require network time servers that are versatile in their ability to provide precise time.


The SyncServer S250 provides multiple and versatile timing configurations that support the expanding technological requirements of large enterprises.  It is Next Generation ready to be the synchronization source for multiple applications.

Multiple and Versatile Timing Configurations

The Stratum 1 S250 will automatically synchronize to GPS, IRIG B AM, 1PPS, and 10 MHz in that priority. It smoothly transitions from one reference to the next available if the higher priority signal is lost or regained. This is perfect for operating with different backup time or frequency sources. The S250 can also revert to a Stratum 2 mode and retrieve time from other user-designated time servers.

Easy To Set Up and Maintain

SyncServers are the easiest to set up and maintain network time servers in the world. The front panel of the SyncServer S250 is designed to quickly bring the server online with a few front panel keystrokes or DHCP. To fully configure the unit, use the very intuitive web interface or the step-by-step wizards for the most common operations.

Highly Robust and Secure

The S250 provides reliable and secure network synchronization technology by combining multi-port, high-speed/ high-capacity network interfaces and versatile GPS timing receiver technology.

Flexibility and Performance

The multiple ports of the S250 provide the flexibility to adapt to different network topologies as networks grow and change. It supports a wide range of network protocols including IPv4 and IPv6, for easy management and seamless integration into your existing and future network. The high speed processor and a nanosecond clock assure high bandwidth NTP performance for hundreds of thousands of network clients.

Assured Perfect Timing

The Stratum 1 level S250 derives extremely accurate time directly from the atomic clocks aboard the GPS satellite system. Reliability is further enhanced via Stratum 2 operation by retrieving time from other user-designated time servers. All SyncServers can be upgraded to an internal Rubidium atomic oscillator to keep the time server accurate if the GPS signal is lost.

Customer Tested Time Server Design

The 5th generation Symmetricom SyncServer S250 has decades of design experience behind it. Customer input is evident in every detail. From the front and rear panel design configurations to the state-of-the art web interface, the S250 is unsurpassed in reliability, accuracy, security and ease of use.

Bottom Line

The SyncServer S250 is the perfect solution to bringing ultra precise time and frequency to network and instrumentation synchronization with the added benefit ease-of-use and state-of-the-art networking technology.

  • Next generation, High-Bandwidth NTP Time Server
  • Stratum 1 Operation Via GPS Satellites
  • Independent 10/100Base-T Ports
  • High-Resolution Vacuum Florescent Display
  • Full numeric keypad
  • IPv6 and IPv4 Compatible
  • Secure Web-Based Management
  • SSH, SSL, SCP, SNMP v3, Custom
  • MIB, HTTPS, Telnet, FTP, and more
  • Stratum 2 Operation via NTP Servers
  • Nanosecond time accuracy to UTC
  • IRIG B AM, 1PPS, 10 MHz input/output
  • Dedicated Sysplex Timer output
  • Email Alerts for Alarms or Error
  • Single Satellite Timing
  • Dual USB ports
  • Two-Year Warranty
  • Rubidium & OCXO Oscillator Upgrades
  • All features of the SyncServer S200
  • SyncServer 250 (1520R-S250)
  • SyncServer 250 with OCXO Oscillator (1520R-S250-OCXO)
  • SyncServer 250 with Rubidium Oscillator (1520R-S250-RB)

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