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NTP100-OSC Time Server


Network Time Protocol (NTP) Server 

The NTP100-OSC NTP is a stand-alone time server that synchronises to a TCXO (temperature-compensated internal oscillator) and sends NTP reference signals to NTP devices via Ethernet, maintaining an accuracy of ± 1min/year or < 165ms per day.

An optional OCXO increases stability to ± 250ms/year.


  • NTP output accuracy of ± 2 ms
  • Time synchronised to internal precision temperature compensated crystal oscillator (TCXO)
  • High-stability option with OCXO provides typical stability of 250ms/year
  • NTP unicast, multicast or broadcast modes
  • Assignable network configuration
  • Configuration via Telnet/SSH or included WinDiscovery
  • IPv4/IPv6 compatible
  • MD5 authentication
  • Time stamp precision/resolution of 5-10ms


Holdover Accuracy

  • Internal precision TCXO temperature-compensated crystal oscillator provides accuracy of ± 1min/year or < 165 ms/day
  • High-stability option with OCXO provides typical stability of 1 ppb/day (± 250ms/year) after 30 days of aging


  • RJ45 - 10/100MB Ethernet
  • DC input - 2.1 mm male jack
  • RS-232 - 9 pin male
  • USB for configuration

Physical Size

  • Size: 6.44 x 4.06 x 1.44 in (16.35 x 10.32 x 3.65 cm)
  • Weight: 16 oz (453.6 g)

Operating Parameters

  • Temperature: 0 to 60°C
  • Humidity: Up to 90% (non-condensing)

Network Compatibility

  • Supports NTP, DHCPv4, DHCPv6 for automatic acquisition of network address, name servers, and timeserver configuration
  • Telnet/SSH communication
  • IPv4/IPv6 compatible
  • SNMP with custom MIB


  • Configure devices through provided WinDiscovery software or Telnet
  • Configuration is saved to nonvolatile memory and survives power losses
  • Authenticated network messages prevent unauthorized tampering of clock configuration

Power Supply

  • DC input (9-28 VDC)
  • Power consumption: < 7.5W
  • Includes external 24 VDC wall-mount power supply with locking DC plug (UL and CE listed)


  • FCC, ROHS, CE Marked, ANSI

Technical documents

Ordering information

There are a range of options available. Please contact Sarsen to discuss your project requirements. 


Associated products