home >> Universal time-frequency modul >> T220M-2Synchronous clock mo
Product Description
The T220M-2 GPS/BeiDou Synchronized Clock Module is a highly integrated GPS/BeiDou synchronized clock module that combines a highly stable disciplined crystal oscillator and a high-precision timing GPS receiver board. It generates and sends accurate and stable time (10MHz) and frequency signals (1PPS). With ultra-low phase noise and excellent holdover capability, it operates in a wide temperature range of -20°C to +70°C, making it suitable for complex and harsh environments such as automotive, airborne, and naval platforms, providing high-precision time and frequency reference signals to the system.
The T220M-2 GPS/BeiDou Synchronized Clock Module utilizes the signals from the high-precision timing GPS receiver board to discipline the crystal oscillator using the same-frequency phase-shift frequency signal. This approach improves the control precision of the oscillator, providing reliable timing and frequency signals. The customized disciplining time system allows it to generate a second pulse (1PPS) and time signal (10MHz) when satellite signals cannot be received, adapting to situations where the signal loss is brief.
The module employs a combination of frequency and phase modulation technology for generating the frequency and 1PPS signals. The 1PPS time information is derived from the disciplined 10MHz signal, which undergoes a 10,000,000-fold division to obtain the 1PPS signal. It is then fused with the 1PPS signal from the GPS module to ensure the final 1PPS has excellent short-term and long-term stability. The frequency control is achieved using a combination of frequency and phase modulation techniques, ensuring frequency accuracy while maintaining phase alignment with the 1PPS.
Key Features:
- Built-in high-performance disciplined crystal oscillator
- Daily average accuracy < 1E-12
- Automatic switch to holdover mode when GPS/BeiDou signal is lost
- Automatic calibration using GPS/BeiDou signals
- Comparable to Rubidium clock level crystal oscillator
Main Applications:
- Holdover operation
- Communication
- Power utilities
- Financial institutions (banks)
- Autonomous navigation
Technical Specifications:
10MHz Output:
- 1 channel, SMA interface
- Waveform: Sine wave
- Output impedance: 50Ω
- Output power: ≥ 7dBm
- Harmonic suppression: ≤ -30dBc
- 1-second stability: ≤ 3E-12
- Discipline accuracy: < 1E-12 (24-hour average)
- 24-hour holdover capability: ≤ 5μs (after 24 hours of disciplining)
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1PPS
- 1 channel, SMA interface
- Waveform: Square wave
- High-level voltage: 3.3V ± 0.2V
- Low-level voltage: 0V ± 0.2V
- High-level pulse width: 100ms
- Alignment: Rising edge alignment
- Output impedance: 51Ω
- Synchronization accuracy: < 20ns
Logistics and Environmental Parameters:
- Dimensions: 90 X 55 X 22 mm
- Weight: 110g
- Power Supply: 12V DC
- Operating Temperature: -20°C to +70°C
- Storage Temperature: -25°C to +85°C
- Humidity: 95% non-condensing
- Power Consumption: Startup less than 5W, operational less than 4W
- Complies with the electromagnetic compatibility requirements specified in GJB2242-94 "General Specification for Time and Frequency Equipment" Section 3.9.1.
Standard Configuration:
- 1 Clock Module
- 1 30CM SMA to BNC Adapter Cable
- 1 30-meter BNC Connector GPS/BeiDou Antenna with Mounting Bracket
Module Front View (Image not provided, only mentioned in the original text) |
Documentation
Being among experts, no longer confused.
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PNT stands for Positioning, Navigation, and Timing
![We are the Reference]()
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
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Experienced
![Experience]()
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.
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Requirement customization
![Built-to-Order]()
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.
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Philosophy
![Approved]()
"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."
