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Product Description:
The T430 GPS/BeiDou Standard Synchronized Clock utilizes low-phase-noise phase-locked loop (PLL) technology and large-scale integrated circuit design. It features an imported high-stability temperature-compensated crystal oscillator and a high-precision timing-grade GPS receiver. Advanced GPS frequency measurement and control technology precisely measures and adjusts the frequency signal output by the crystal oscillator to lock it to the GPS system. The provided high-precision time and frequency reference signal meets the requirements of ITU-T G.811 Grade 1 time source. It can be widely used in systems such as digital switches, SONET/SDH transmissions, and different-level timing signal generation, providing tracking and UTC time signals of 2.048Mb/s (E1) and 2.048MHz.
The T430 GPS/BeiDou Standard Synchronized Clock outputs a 1PPS pulse signal that is obtained by dividing the GPS-disciplined oscillator output frequency by 10,000,000. The phase of the pulse signal is strictly aligned with the carrier signal and is not affected by short-term random jumps in the GPS second pulse, ensuring the reproduction of the UTC time reference. This feature meets the requirements of systems with strict timing and frequency requirements, such as communication base stations.
The T430 GPS/BeiDou Standard Synchronized Clock employs an intelligent learning algorithm that continuously learns the drift characteristics of the oscillator during the disciplining process and stores the drift data. In the event of GPS satellite signal anomalies or unavailability, the system can automatically switch to holdover mode.
The T430 GPS/BeiDou Standard Synchronized Clock is designed in a standard 19-inch 1U chassis. The front panel features a high-definition LCD display that shows time, GPS operational status, system status, and other information. The tricolor indicator lights provide status information for power, GPS, 1PPS, and lock status.
Key Features:
● Multiple signal outputs: 10MHz, 2.048Mb/s (E1), 2.048MHz, 1pps, RS232
● Support for multiple reference sources: GPS, BeiDou, GLONASS
● High accuracy: Frequency accuracy better than 1E-12, meeting the requirements of ITU-T G.811 for Grade 1 reference clocks
● Support for single satellite timing mode
● Chassis with magnetic shielding for strong anti-interference capability
Technical Specifications:Output Signals:
● 2.048MHz:
- 1 channel, BNC, square wave, 75Ω
- Frequency accuracy: <1E-12 (GPS locked, 24-hour average)
- Drift generation: Compliant with ITU-T recommendation G.811
- Jitter generation: ≤20ns (peak-to-peak)
- Holdover accuracy: <5E-10 (GPS disconnected, after 24 hours of holdover)
● 2.048Mb/s (E1):
- 1 channel, BNC interface, 75Ω
- Line coding: HDB3
- Waveform: Compliant with ITU-T G.703
- Pulse amplitude: Nominal 2.37V±0.237V peak-to-peak
- Driving capability: Compliant with ITU-T G.703
- Jitter performance: Compliant with ITU G.823
● 10MHz:
- 1 channel, BNC, square wave, TTL level
- Frequency stability: Better than ±5E-10 (0 to 50°C)
● 1PPS:
- 1 channel, BNC interface, TTL level, 50Ω impedance
- Rising edge: <20ns
- Timing accuracy: <50ns (deviation of tracking satellites relative to UTC time)
TOD Signal:
- 1 channel, DB-9 female head, RS232 level
- GPGGA, GPRMC sentence format (4800-N-8-1)
- GPS status, time, system information
Display:
- Indicators: Power, GPS, 1pps, Tracking
- LCD screen: Year, month, day, hour, minute, second, and GPS operational status
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Main advantage
● Excellent short- to medium-term stability
● Strict alignment of phase and carrier signals
T430 Phase Noise Performance T430 Short-Term Stability Standard Configuration:
● Host Unit: 1
● 50m High-Sensitivity GPS Antenna: 1 set
● 1m Power Cable: 1
● 1m Serial Cable: 1
● 1m Signal Cable: 1
● User Manual (Chinese): 1
● Software CD: 1
Optional:
Support for multiple channels of RS485, RS422, 1PPS, 1PPM, 1PPH, IRIG-B AC, IRIG-B DC code output.
GPS Receiver:
- High-precision timing-grade 50-channel GPS receiver
- Positioning accuracy: 2.5m CEP
- Timing accuracy: Better than 30ns (RMS)
- Acquisition time: Cold start <26 seconds, warm start <1 second, hot start <1 second, reacquisition <1 second
- Receives L1, C/A code signal at 1575.42MHz with BNC interface
- Tracking sensitivity: -162dBm, cold start sensitivity: -148dBm
Physical and Environmental Parameters:
● Dimensions: 19-inch 1U chassis, 483 × 240 × 44.5mm (2U or 3U chassis options available depending on the number of interfaces)
● Weight: <2.5kg
● Power Supply: 220V±20%, 47Hz to 63Hz
● Operating Temperature: -10°C to +50°C
● Storage Temperature: -25°C to +85°C
● Humidity: 95% non-condensing
● Power Consumption: <20W
● Compliant with the electromagnetic compatibility requirements specified in GJB2242-94 "General Specifications for Time and Frequency Equipment," Section 3.9.1
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Documentation
T430 GPS Beidou Standard Synchronous Clock【PDF】data
PDF
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PNT stands for Positioning, Navigation, and Timing
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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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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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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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