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2026

Single‑北斗 DNTS‑9‑B Time Server: Autonomous Time Synchronization Ensures Safe Operations in Critical Industries

With the full completion and commissioning of the BeiDou-3 global satellite navigation system, BeiDou timing technology has become a core pillar in ensuring the time security of critical national infrastructure. In response to the national strategy for self-reliance and controllability, Beijing Zhongxinchuang Technology Co., Ltd. has developed and launched a standalone BeiDou… The DNTS‑9‑B time server relies entirely on the BeiDou Navigation Satellite System to obtain standard time signals, without depending on any foreign satellite navigation systems. By achieving complete autonomy and controllability at the time‑source level, it provides secure and reliable timing solutions for critical sectors such as rail transit, aviation, government administration, and national defense. The core advantage of the single‑BeiDou DNTS‑9‑B time server lies in the purity and security of its time source. Equipped with a dedicated BeiDou satellite receiver that supports multi‑frequency BDS‑B1/B2/B3 signal reception, the device can rapidly acquire and lock onto BeiDou satellite signals. In open environments, it can simultaneously track more than 12 BeiDou satellites, ensuring the stability and reliability of the time source. Unlike dual‑mode or multi‑mode timing devices, this product employs a hardware design that blocks reception channels for other satellite systems, physically eliminating dependence on foreign satellite constellations. This effectively mitigates potential risks arising from geopolitical shifts, signal interruptions, or malicious interference, thereby safeguarding the autonomous and controllable operation of time‑synchronization systems in critical industries. In terms of timing performance and stability, the DNTS‑9‑B builds upon Zhongxin Chuang’s extensive technical expertise in time synchronization. Its timing accuracy reaches the nanosecond level, meeting the stringent precision requirements of rail‑transit signaling systems, aviation dispatch systems, and defense‑related research equipment. Featuring a high‑performance holdover module equipped with either an imported high‑precision rubidium atomic clock or a temperature‑controlled crystal oscillator (optional), the device automatically switches to holdover mode when BeiDou satellite signals are lost due to obstruction or interference. Holdover accuracy ranges from 0.1 μs/h to 1 μs/h, depending on configuration, ensuring that even after several hours or days, it can continue to provide a precise time reference to downstream equipment, thus preventing service interruptions. In terms of hardware design, the DNTS‑9‑B utilizes industrial‑grade components and supports a wide input voltage range (AC 110 V–240 V or DC −48 V). It exhibits excellent electromagnetic compatibility, having passed rigorous testing standards including GB/T 17626 for EMC and GB/T 2423 for environmental adaptability. As a result, it is well suited to diverse operating environments—such as server rooms, outdoor cabinets, and trackside equipment enclosures—withstanding extreme temperatures, humidity fluctuations, and electromagnetic interference. The device supports standard 1U rack‑mount installation and offers a rich array of interfaces: one BeiDou satellite signal input, two PPS pulse‑output ports, and four NTP network‑timing interfaces, enabling simultaneous time synchronization for hundreds of terminal devices and satisfying the timing needs of medium‑ to large‑scale networks. The reliability of this device has been validated through real‑world deployments across multiple key industries. In a high‑speed rail signaling system upgrade project undertaken by China Railway Corporation, the DNTS‑9‑B provided unified BeiDou‑based timing services to train dispatch systems, onboard equipment, and station interlocking systems, ensuring safe train spacing and precise execution of scheduling commands, and successfully passing the railway industry’s stringent interoperability and stability tests. At Beijing Capital International Airport, it supplied an independently controllable time reference for flight‑departure/arrival scheduling, ground‑support equipment, and passenger information systems, thereby enhancing operational efficiency and safety. In a defense‑related research institution, the DNTS‑9‑B delivered high‑precision time synchronization for experimental data acquisition and coordinated equipment control, guaranteeing the accuracy and traceability of test results. Furthermore, the DNTS‑9‑B seamlessly integrates with Zhongxin Chuang’s intelligent, enterprise‑wide network‑time‑unification monitoring software, enabling real‑time status monitoring, remote configuration, and fault‑alert functions. Through the monitoring platform, operations personnel can intuitively view critical parameters such as BeiDou satellite signal strength, the number of tracked satellites, time offset values, and device operating temperatures, while also accessing historical data and trend analyses to proactively identify potential issues and improve operational management efficiency.

Unveiling the Working Principles and Functions of NTP Servers

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Unveiling the Working Principles and Functions of NTP Servers

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