NTP100-GPS Time Server

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NTP100-GPS Time Server


The NTP100-GPS is an NTP (Network Time Protocol) server that synchronizes to GPS satellites and distributes NTP reference signals via Ethernet. When synchronized to the atomic clocks in GPS and GLONASS satellites, the long term accuracy of the device is the same as the atomic clock of the GNSS. An internal TCXO (temperature-compensated crystal oscillator) provides holdover stability of ± 1 min/year during GPS signals loss. An optional OCXO (oven-controlled crystal oscillator) increases holdover stability to ± 250ms/year.




  • Provides time legally-traceable  UTC
  • NTP output accuracy of ± 2 ms
  • Synchronized to atomic clocks in GPS satellites for Stratum 1 accuracy
  • Typical holdover stability of ± 1 min/year using high precision internal TCXO during GPS loss
  • High-stability option with OCXO provides typical stability of ± 250 ms/year 
  • Time stamp precision of  5-10 ms
  • NTP query (unicast), multicast, or broadcast modes
  • Assignable network configuration
  • Configuration via Telnet/SSH or included WinDiscovery
  • IPv4/IPv6 compatible
  • MD5 authentication



Time Reference  
When synchronized to atomic clocks in GPS satellites the long term accuracy of the NTP100 is the same as the atomic clock of the GPS
After initial synchronization and (if) upon loss of GPS signal the NTP100 will revert to an internal temperature compensated crystal oscillator and typically maintain accuracy of <165 ms per day
Power Supply  
DC input (9-28 VDC)  
Power consumption: <7.5W  
Includes an external 24 VDC wall-mount power supply with locking DC plug, UL & CE listed
A weather-proof, pre-amplified antenna is included with 16 ft (5 m) of coaxial cable
Optional antenna kit is available with antenna, 50 ft (15 m) cable and antenna mounting bracket
RJ45 ─ 10/100 MB
DC input ─ 2.1 mm male jack  
Antenna ─ SMA  
RS-232 – 9 pin male  
USB – for configuration via WinDiscovery 
Network Compatibility  
NTP unicast, multicast, or broadcast mode
> NTP v2 (RFC 1119)
> NTP v3 (RFC 1306)
> NTP v4 (RFC 5905)
DHCPv4, DHCPv6 for automatic acquisition of network address, name servers, and timeserver configuration
Telnet/SSH communication
IPv4/IPv6 compatible
SNMP with custom MIB
Rack Mount  
Optional RM4 rack mount kit available
Physical Size
6.44 x 4.06 x 1.44 in (16.35 x 10.32 x 3.65 cm)
16 oz (453.6 g) 
Cover: black aluminum  
Front/rear panel: clear anodized aluminum 
CE Marked – Available for sale in EU  
FCC, Part 15, Class B, emissions