T550 GPS, GLONASS, BeiDou, Galileo NTP Network Time Server

TimeTools T550 is a highly accurate Stratum-1, Multi-GNSS referenced, NTP time server appliance. Housed in a high quality 1U high rack-mountable aluminium enclosure, the device occupies minimal rack space.

An integrated 32-channel multi-GNSS timing receiver receives timing information from GPS, GLONASS, BeiDou and Galileo*1 satellite constellations. Reception of timing signals from multiple satellite systems aids reliability and provides redundancy.

A high-stability TCXO oscillator further enhances reliability during satellite signal loss by providing extended Stratum1 holdover.

The T550 hardware features two independent Ethernet network ports that can be configured to synchronize separate networks.

The device provides an accurate source of time to any NTP or SNTP compatible system. It can also synchronize large networks of many thousands of clients.

T550 Multi-GNSS Dual-LAN NTP Server with TCXO

Unit Price: GBP 1150.00 \ EUR 1350.00 \ USD 1570.00

Price Includes: T550 Multi-GNSS NTP Network Time Server Appliance, Multi-GNSS Timing Antenna, Antenna Mount, 30m Cable, 6-Year Warranty.

PDF Download T550 NTP Server Datasheet


  • Stratum-1, Network Time Protocol (NTPv4) Network Time Server appliance.
  • Reception of GPS, GLONASS, BeiDou and Galileo*1 for reliability and redundancy.
  • High-stability TCXO oscillator for extended Stratum-1 holdover.
  • GNSS accurate to 15 nanoseconds (GPS Locked).
  • NTP accurate to 3 microseconds (GPS Locked).
  • Synchronize a network of up to 100,000 clients.
  • Two 10/100 Mbit auto-sensing, auto-MDIX Ethernet network ports.
  • Supports IPv4 and IPv6 Internet Protocols.
  • Universal AC mains input.
  • Made in England. Includes 6-year warranty and lifetime support.


Synchronization of servers, workstations and network infrastructure.
Network monitoring, time measurement and synchronization.
Accurate synchronization of time critical processes.
Automation Systems, SCADA, Network Monitoring and Control Systems.
Supervisory control and data acquisition (SCADA), automation and control systems.
Accurate time stamping of CCTV, DVR and Video Management Systems (VMS) to a legally traceable source of time.
Access Control Systems (ACS).
Time reference for NTP synchronized clock systems.

Customers and Testimonials

Many organisations around the world trust TimeTools for their time synchronization requirements. Including:

American Express, BBC, NASA, Bank of England, Rolls Royce, Lockheed Martin, Coca-Cola, Naval Air Warfare Centre, Shell, Siemens, British Aerospace, British Telecom, Motorola, NAV Canada, Civil Aviation Authority and more.

I just wanted to compliment your company on the quality of the NTP server appliance. The device runs rock solid, and it’s far less costly than some of the other dedicated GPS NTP servers. If anyone asks me for a recommendation, I’ll pass them your way.
Chris Taylor,
IT Manager,
Nanshu Densetsu, Japan

Product Codes

T550-00 NTP Network Time Server Appliance.

What is Included

T550           NTP Network Time Server Appliance.

T-3740       Pole Mounting Multi-GNSS Antenna .
MT4-GPS   Antenna Mount.
TCX-030    30m (100 ft) RG58 Cable.

RS232 Serial Console Cable.
Quick Start Guide.
CD containing user and installation guides.


TCX-010      Alternative 10m RG58 Cable.
TCX-050      Alternative 50m LMR195 Equivalent Cable.
TCX-100      Alternative 100m LMR400 Equivalent Cable.

Custom cable lengths available on request.

SPP-GPS     Multi-strike maintenance-free surge suppressor.
T-AD200-8 GPS Amplifier (20db).


PDF Download T550 NTP Server Datasheet
PDF Download Quick Start Guide
PDF Download T1201-01 T300 T550 Hardware Guide
PDF Download T1202-01 Antenna Installation Guide
PDF Download T1300-01 T-Series User Guide

All prices Ex-Works.

*1 Hardware ready: a firmware update is required to enable the Galileo constellation.

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