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T460 Low phase noise ultra high stability time frequency sta
GPS Beidou rubidium

T460 GPS Beidou Time-Frequency Standard is a high-stability crystal oscillator (DOCXO) and precise professional timing GPS Beidou receiver that optimizes low phase noise and low frequency drift. It incorporates low phase noise phase-locked loop (PLL) technology and large-scale integrated circuit design, utilizing advanced GPS/Beidou frequency measurement and control techniques to accurately measure and adjust the frequency signal output by the crystal oscillator, locking it to the GPS/Beidou system. With an accuracy better than 1E-12, it provides a sustained high-precision frequency signal output without the need for calibration. It combines the long-term stability of a rubidium atomic clock with excellent short-term stability and ultra-low phase noise.

The 1PPS pulse information output by the T460 GPS Beidou Time-Frequency Standard is generated by dividing the 10 MHz signal output by the GPS/Beidou-disciplined temperature-controlled crystal oscillator (DOCXO) by 10,000,000. This resolves the impact of short-term random jumps in the original GPS/Beidou pulse per second (PPS) signal.

The T460 GPS Beidou Time-Frequency Standard utilizes intelligent learning algorithms to continuously learn the drift characteristics of the crystal oscillator during the disciplining process and store the drift data. When the GPS/Beidou satellite signal becomes unavailable or exhibits abnormal behavior, the system can automatically switch to holdover mode. It provides high reliability time and frequency signal outputs through intelligent algorithms. It finds wide applications in high-speed communications, metrology calibration, radar, digital broadcasting, defense, and astronomical observations.

Key Features:

- Built-in low phase noise, ultra-high-stability dual-temperature-controlled crystal oscillator

- 24-hour average better than 5E-13

- Low phase noise, ultra-high stability, no drift

- Supports multiple outputs: 10 MHz, 5 MHz, 1PPS signals

- Industrial-grade design with MTBF > 80,000 hours

- Utilizes intelligent learning and holdover algorithms

- Rubidium atomic clock-level high-stability crystal oscillator frequency reference

WEB Network Management:

Real-time monitoring of system status, including RAM, CPU utilization and processes, CPU average load, disk partition information, system uptime, and running time. Display system information such as host name, operating system kernel version, memory, CPU information, system scheduled tasks, etc. Real-time monitoring of network port transmission rates, network connections, ARP cache table, and network bandwidth display. Ability to directly query the IP address and login date of the most recent server login, as well as information about the logged-in account.

Advantages:

● Excellent mid-to-short-term stability

● Ultra-low phase noise

T460 Phase Noise Performance

T460 Short-Term Stability

Physical and Environmental Parameters:

- Dimensions: 19-inch 2U chassis, 447×89×300mm

- Weight: <3.5Kg

- Power supply: 220V±20% 47Hz ～63Hz

- Operating temperature: -10℃～+50℃

- Storage temperature: -25℃～+85℃

- Humidity: 95% non-condensing

- Power consumption: <30W

- Compliant with GJB2242-94 "General Specification for Timing Equipment" 3.9.1 regarding electromagnetic compatibility

Options: Supports multiple options including 30.72 MHz, 80 MHz, 100 MHz, RS485, RS422, 1PPS, 1PPM, 1PPH, IRIG-B AC, IRIG-B DC code outputs.

GPS Beidou Receiver:

- Frequency: GPS L1; BD2 B1

- System modes (configurable):

- Single Beidou positioning mode

- Single GPS positioning mode

- GPS Beidou hybrid positioning mode

- Channels: 32 channels

- First positioning time: Cold start: <35s; Hot start <1s, Reacquisition <1s

- Timing accuracy better than <30ns (RMS)

- Positioning accuracy: 3m (RMS)

- Velocity accuracy: 0.1m/s

- Daily drift: 3E-12

- Second stability: ≤1E-11

- Mean time between failures: 20 years

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PNT stands for Positioning, Navigation, and Timing
Bd Star is a national high-tech enterprise specializing in Beidou GPS timing and navigation industry. The company is dedicated to the research and development, design, production, and sales of system solutions such as standard time timing
Experienced
BdSTAR TIME seamless switching technology for redundant reference sources includes several technical components such as high-precision phase-shifting technology, reference clock, FPGA, integrated analog stretching, asynchronous serial communication, parameter storage, and master clock output.
Requirement customization
The core technology team of the company has many years of research and development experience in the field of timing and frequency. They possess multiple key core technologies in high-precision timing, PNT combination, frequency measurement, control, optical fiber time-frequency transfer, recovery, and maintenance.
Philosophy
"Our team of experts is committed to providing you with the best industry solutions, reducing project costs, and saving your valuable time. Additionally, our ability to design and use various timing and navigation components enables us to develop customized products for various special applications."