FEI-Zyfer

Timing & Synchronization

UTC-traceable timing distribution, IEEE 1588 PTP synchronization, and GPS-independent holdover systems for defense networks, satellite ground segments, and critical infrastructure. Engineered to maintain time accuracy in event of jamming, spoofing, or unavailability.

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<5 ns

UTC Accuracy

Product Lines

64+

Output Channels

IEEE 1588

Sync Standard

<5 ns

UTC Accuracy

Product Lines

64+

Output Channels

IEEE 1588

Sync Standard

Product Families

Available Configurations

1U Rack-Mount
2U Rack-Mount
Chassis-Mount
Multi-Channel Distribution
IEEE 1588 Grandmaster
GPS-Denied Holdover

Large radio telescope array at dusk — distributed timing precision for large-scale installations

Timing Distribution Systems

Multi-output timing distribution assemblies delivering precise 1PPS, 10 MHz, and TOD signals across large installations and distributed networks.

Up to 64 simultaneously synchronized output channels
Output formats: 1PPS, 10 MHz, IRIG-B, TOD, RS-422
Sub-nanosecond phase alignment across all outputs (<1 ns skew)
Active cable equalization and delay compensation

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Microwave transmission towers on mountaintop at dusk — IEEE 1588 PTP synchronization for telecom and 5G infrastructure

Synchronization Systems (IEEE 1588 / NTP)

IEEE 1588 PTP, NTP, and Synchronous Ethernet grandmaster systems for defense networks and critical telecom infrastructure.

IEEE 1588v2 (PTP) grandmaster and boundary clock
NTP server supporting >10,000 simultaneous clients
Synchronous Ethernet (SyncE) support
GPS/GNSS-disciplined primary reference with holdover

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Naval vessel in dense fog at sea — GPS-denied maritime environment requiring precision holdover timing

Holdover Timing Systems

GPS-independent holdover systems maintaining time accuracy during GPS outages for GPS-denied and electronically contested environments.

OCXO holdover: <1 μs / 24 hours without GPS
Atomic clock holdover option: <100 ns / 24 hours
Seamless <1 μs transition from locked to holdover mode
Designed for GPS-jammed and spoofed environments

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Where It's Used

Application Areas

Defense Command Networks

Distributing precise timing across C2 networks where all nodes must be synchronized within nanoseconds for coherent sensor fusion and coordinated operations.

Radar & Sensor Arrays

Synchronizing distributed radar elements and phased array antennas for coherent signal processing and accurate target localization.

Electronic Warfare Systems

Precise timing for coordinated EW operations, jamming windows, and emissions management across multi-domain platforms.

GPS-Denied Environments

Holdover systems maintaining timing accuracy during GPS jamming, spoofing, or signal unavailability in contested environments.

Telecommunications & 5G

IEEE 1588 grandmasters providing timing to 5G, LTE, and packet-switched network infrastructure per ITU-T G.8272 requirements.

Satellite Ground Segments

Timing distribution for satellite command and control stations requiring UTC-traceable accuracy with guaranteed holdover capability.

Airborne & Mobile Platforms

Ruggedized synchronization systems for aircraft, ships, and ground vehicles requiring portable precision timing with environmental hardening.

Critical Infrastructure

Power grids, financial networks, and transportation systems requiring UTC-traceable time synchronization with resilient holdover.

About the Manufacturer

FEI-Zyfer

Assured PNT and GPS-based timing for defense platforms in contested environments

FEI-Zyfer specializes in assured positioning, navigation, and timing solutions for military platforms operating in GPS-denied and GPS-challenged environments. Products range from long-holdover atomic clock systems to crypto-secured SAASM and M-code GPS receivers.

Garden Grove, California

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