What is a GPS Time Server?
A Time Server is a device or service that distributes time over a network using protocols like:
- NTP (Network Time Protocol), millisecond accuracy, typically operating in the range of 10-100 ms.
- PTP (Precise Time Protocol), nanosecond accuracy, typically operating in the range of 10-100 ns.
- WRTP (White Rabbit Time Protocol), picosecond accuracy, typically operating in the range of 10-100 ps.
A time server is critical when you need to synchronize IT systems, servers, routers, computers, embedded devices, as well as legacy systems. NTP time servers receive a time signal from a trusted time source such as GPS satellite signals or an embedded internal atomic clock and then distribute the time across the network using the protocols that match your system. Therefore, most modern time server equipment can act as master clock reference (or sometimes referred to as a PTP grandmaster clock) for the rest of the devices on the network and physical systems. The method by which the accuracy of the master clock is transferred to another slave, or secondary clock, is known as “synchronization.”
A reliable, GPS-disciplined stratum 1 time server ensures:
An Authoritative Time Source
- Safran time servers can accept over 14 different satellite signal types to discipline its internal clock. This enables the time server to distribute an accurate timestamps to the rest of the network.
Accurate Event Logging
- Modern networks require incredibly granular time-stamped data in order to operate efficiently. With a precise time server you can timestamp events to an extremely accurate level of 15 nanoseconds (or even better with white rabbit devices).
Regulatory Compliance
- In finance, utilities, and telecommunications, MiFID II and FINRA regulations require business clocks and business networks to be synchronized within 100 microseconds of UTC.
Secure Operations
- Safran time and frequency reference systems include authentication and encryption technology to prevent security vulnerabilities, allowing you to avoid the need to open ports on your firewall.
Why Does Accurate Time Synchronization Matter?

Public internet NTP is too slow
Public internet NTP typically provides accuracy within tens of milliseconds, which is too slow applications such as high frequency trading, 911 call center systems, enterprise networks within datacenters, or defense applications – where microseconds and nanoseconds matter (< 1 μs).
That gap in accuracy can lead to misaligned transactions, unreliable event logs, and increased latency across distributed systems. A dedicated, GPS-based time server ensures deterministic, high-precision synchronization, eliminating timing drift and enabling systems to operate with confidence at microsecond and nanosecond levels.
Network Security & Forensics
Accurate, consistent timestamps on logs are vital for detecting, analyzing, and mitigating security breaches, enabling IT to trace the sequence of events.
A trusted, resilient time source also helps defend against GNSS jamming and spoofing by maintaining consistent, verifiable time across systems—even when external signals are disrupted.


When Microseconds Matter: Real World Consequences
In high-stakes systems, even a millisecond of timing error can lead to incorrect decisions, misaligned data, or dangerous outcomes across defense, transportation, and emergency response operations. Radar, GPS tracking, and communication systems all depend on tightly synchronized time to ensure that signals are interpreted accurately and actions are coordinated correctly. From guiding critical missions to ensuring first responders receive clear, reliable information, precise time synchronization is essential for safety, trust, and real-world reliability.
Applications of a Timing Server

Datacenters & IT Networks
Ensure consistent timestamps across servers, databases, and cloud infrastructure using a global time server.

Telecommunications
Support network synchronization for 4G/5G infrastructure using PTP Grandmaster Clocks.

Industrial Process Control
Processes like assembly lines, robotic automation, and data logging require exact time coordination to function effectively.

Financial Services
Timestamp trades and transactions with high precision to meet regulatory requirements and achieve higher shareholder value.

Defense & Aerospace
Provide secure, resilient timing for mission-critical systems and operations.

Power Utilities
Enable synchronized monitoring and control of grid infrastructure. Prevent electric outages due to lightning strikes and GPS jamming and spoofing attacks.
Safran GPS Time Server Solutions

SecureSync® 2400
SecureSync is a time and frequency reference system designed to synchronize critical defense and commercial infrastructure that require extreme reliability and security.
The SecureSync 2400 is a reliable and modular GNSS / GPS time server. It can output both 10MHz frequency as well as pulse-per-second PPS signals and PTP. Built on a highly configurable platform, you can choose what types of interfaces and connectors you need.

VersaSync Master Clock
VersaSync is a high performance GPS master clock and network time server that delivers accurate, software configurable time and frequency signals under all circumstances, including GNSS-denied environments.
Its compact size and high level of ruggedization make VersaSync suitable for mobile applications in harsh environments. With < 1µs accuracy to UTC, the VersaSync provides you with operational readiness and time synchronization for mobile applications.
Key Capabilities of a Modern NTP Time Server
| Capability | What It Does | Why It Matters |
|---|---|---|
| NTP Time Server (Stratum 1) + GPS Synchronization | Delivers precise UTC time to network devices using GNSS and NTP | Ensures consistent timestamps across systems, logs, and transactions |
| PTP Grandmaster + White Rabbit Precision Timing | Provides sub-microsecond to sub-nanosecond synchronization across networks and fiber optic cables | Enables ultra-precise timing for finance and data center environments |
| Master Clock Outputs (IRIG, PPS, Frequency) | Distributes timing to physical and legacy systems | Synchronizes infrastructure beyond the network, including facility-wide systems |
| Secure Timing Architecture (LDAP, RADIUS, TACACS+, SNMPv3) | Authenticates users and protects time distribution across the network | Prevents tampering, strengthens cybersecurity posture, and ensures trusted time |
| High-Stability Oscillators & Holdover (OCXO, Rubidium) | Maintains accurate time during GNSS outages using internal references | Ensures continuity and uptime in critical operations |
Related Products
If you need both a GPS-based time source and a solution for distributing that time across a wide-area network, explore our related White Rabbit time distribution products.
-
8230AJ GPS/GNSS Anti-Jam Antenna
- Rejects GNSS Inteference
- Unique conical antenna
- Mountable & Weather-Proof
-
White Rabbit Z16
- Sub-nanosecond Time Accuracy
- Multi-Source Time References
- 16 Optical Timing Ports for WR, PTPv2 and NTP
-
White Rabbit ZEN TP-FL
- Sub-nanosecond Time Accuracy
- 4x1PPS expansion / 8x1PPS expansion boards
- Remote configuration and monitoring
-
WROX
- Adds White Rabbit interface to SecureSync
- PTP: Compliant with IEEE1588v2
- 1 G and 10 G configurations
-
PNT 360
- Tracks NTP, PTP, GPS, GNSS Network Alerts
- Monitoring for SecureSync 2400, VersaSync, White Rabbit Z-Suite
- User-Friendly Software
Industry
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