T900-P Fiber Optic High Precision Time Transfer

Building a high-precision backbone transmission core for future time-frequency networks

BeiDou provides optical fiber time and frequency transmission technology for major national projects in the fields of deep space exploration and basic science, achieving 50ps time synchronization over 100km.

High-precision time transfer solution

The T900-P fiber-optic high-precision time transfer device is a high-precision timing system based on a wavelength division multiplexing (WDM) link. The system consists of a central station and a terminal station. The central station primarily comprises a time-frequency interface unit, a time-frequency measurement unit, a time-frequency signal encapsulation unit, an optical/electrical and electrical/optical conversion unit, and a wavelength multiplexing/demultiplexing unit. The terminal station comprises a wavelength multiplexing/demultiplexing unit, an optical/electrical and electrical/optical conversion unit, and a time-frequency measurement servo unit. This timing system utilizes classic two-way time comparison methods over fiber channels (DWDM wavelength channels) to achieve high-precision time and frequency synchronization. The device offers stable operation and strong interference resistance, achieving a synchronization accuracy of 50 ps at a distance of 100 km.

Applicable fields: deep space exploration, national defense, scientific research and other fields that require high synchronization accuracy.

Important Features

Our T900-P is a high-precision time transfer device based on a bidirectional fiber optic link. It offers high stability, interference resistance, and engineering adaptability, making it suitable for scenarios requiring the highest accuracy and reliability in time synchronization. It is suitable for critical applications such as deep space exploration, national defense security, and scientific research experiments. The following are some key features of the T900-P:

100km synchronization accuracy can reach 50ps
Optional working wavelength
Can support longer distance customization
Industrial-grade design, compact structure
Unique interference monitoring and mitigation technology
Support UTC information transmission

Application Scenario

Deep space exploration

In deep space exploration missions, such as Mars rovers, lunar landers, or deep space relay links, the T900-P provides high-precision, low-latency time signals, making it a key device for ensuring the accuracy of ranging and velocity data between ground stations and spacecraft.

Precision measurement and control link synchronization

In precision measurement and control systems such as large array telescopes, quantum physics experiments, and benchmark ranging, the T900-P can build a high-stability time channel through optical fiber links to ensure phase consistency and coordinated sampling of multi-point measurement and control systems.

National defense time and frequency support

The T900-P boasts excellent anti-interference and stability, making it suitable for military communication networks, guidance systems, and electronic countermeasure platforms, ensuring time-frequency consistency for command, dispatch, and system collaboration.

National timing backbone link

As the transmission backbone of the time and frequency network, the T900-P supports sub-nanosecond synchronization accuracy at distances exceeding 100 kilometers, helping national-level timing services build a secure, reliable, and intrusion-resistant high-precision time service network.

Performance Indicators

Product Features	Specification name	Indicator parameters	Remark
power supply	Supply voltage	AC220V±10%
power supply	Power consumption	≤80W
1PPS input	Number of way	1-way
	Amplitude	2.5~5V
	rising edge	<5ns
	Connectors	SMA
Time Input	Number of way	1-way	10MHz and 1PPS signals have the same origin
	Level	RS232 baud rate: 115200
	Time format	NMEA: ZDA
	Pin Definition	2:TX 3:RX 5:GND
	Connectors	DB9 female
10MHz Input	Number of way	1-way
	Amplitude	7±3dBm
	Connectors	SMA
1PPS output	Output channels	1-way	50Ω impedance
	Amplitude	≥2VPP
	Pulse Width	100ms
	Rising/falling edge	<1ns
	Transfer Jitter	<50ps (RMS)
	Connectors	SMA
10MHz RF output	Output channels	1-way
	Rate of work	≥8dBm
	Harmonic suppression	≥30dBc
	Spurious suppression	≥70dBc
	Additional frequency stability 1s	≤5E-12
	Additional frequency stability 10s	≤5E-13
	Additional frequency stability 100s	≤7E-14
	Connectors	SMA
Time code data output	Output channels	1-way
	Communication level	RS-232 baud rate: 115200
	Pin Definition	2:TX 3:RX 5:GND	Other pins NC
	Output information	Default NMEA: ZDA
	Connectors	DB9 female
monitor	Number of way	1-way
	Connectors	RJ45
Fiber optic transceiver	Number of way	1-way
	wavelength	1310nm
	interface	FC flange
Temperature requirements	Working temperature	-20℃～+50℃
	Storage temperature	-55℃～+85℃
Appearance	size	19-inch 2U chassis (width * height * depth: 440 × 89 × 350 mm)