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2022

Zhongxin Chuangwei provides a time synchronization server for Tianfu Airport.

Zhongxin Chuangwei provides a time synchronization server for Tianfu Airport.

Recently, Tianfu Airport issued a request for proposals for a time server. Beijing Zhongxin Chuang promptly collaborated to develop a detailed solution and recommended its self‑developed and manufactured DNTS‑6 time server as the bid‑winning product. Following a fiercely competitive bidding process, Zhongxin Chuang stood out thanks to its high‑quality products and comprehensive after‑sales service, ultimately securing the contract for Tianfu Airport’s time‑server project.

Tianfu Airport is located in Sichuan Province, China. Chengdu City Jianyang City Lujia Town Airport Avenue (belongs to Chengdu Eastern New Area Construction scope), located 50 kilometers north of Chengdu’s city center and northwest of… Chengdu Shuangliu International Airport Located 50 kilometers northeast of Jianyang city center, it is a 4F‑class international airport, an international aviation hub, one of the highest‑rated airports along the Silk Road Economic Belt, and the primary hub of the Chengdu International Aviation Hub.

Tianfu Airport conducted an in-depth evaluation of the DNTS‑6 time server, independently developed by Zhongxin Chuang, and the results consistently exceeded the specified performance requirements. The airport also expressed high satisfaction with our product quality and after-sales service, leading to a successful procurement and deployment.

The DNTS-6 network time server, developed by Beijing Zhongxinchuang Technology Co., Ltd., is an intelligent, high-precision NTP network time server. The DNTS-6 obtains standard time information from systems such as GPS, BeiDou, GLONASS, Galileo, 4G, and CDMA, and provides standard time services over the network via NTP/SNTP or other network protocols. Devices in the network that require time synchronization—such as personal computers, servers, and controllers—can synchronize with international standard time. Additionally, when using GNSS satellite receivers, priority can be configured, supporting single-receiver/dual-receiver and single-antenna/dual-antenna setups; each receiver can be set to timing mode individually or in combination.

The DNTS-6 features one or two 10/100 adaptive Ethernet ports, which are physically isolated from each other to ensure data security. These ports can be configured either on the same network segment or on different segments, providing redundancy—failure of one port will not affect the normal operation of the others. Each Ethernet port must be assigned an independent IP address.

Performance Metrics

Network protocol	NTP v1, v2, v3, and v4 (RFC 1119 and RFC 1305), SNTP (RFC 2030), Authentication (RFC 1321), Telnet (RFC 854), UDP NTP Unicast, Broadcast, Multicast, Autokey, TIME (RFC 868), FTP (RFC 959), DAYTIME (RFC 867), DHCP (RFC 2131)
	HTTP/SSL/HTTPS (RFC 2616), SSH/SCP (Internet Draft), SNMP v1, v2c, and v3, MIB II (RFC 1213), RSA asymmetric encryption, MD5 authentication, SHA authentication, AES encryption, DES encryption, RC4 encryption.
	IPv4, IPv6, IPv4/IPv6 Hybrid
	Supports NTP Peer Client/Server Broadcast Multicast
Server performance	GNSS reference mode, Tier‑1 network time server, with an internal synchronization accuracy of 20 ns.
	NTP request rate: 20,000 requests per second per network port
	User terminal synchronization timing accuracy: 0.1–2 ms (typical value on a local area network)
	User capacity: Supports tens of thousands of clients.
	It can be used as a client to synchronize with other NTP network time servers.
	Supports logging up to 100,000 entries.
	High-performance, wide-temperature server motherboard, based on a deeply customized Linux operating system, suitable for a variety of demanding operating environments.
Receiver	72-channel timing‑grade GNSS receiver, with optional multi‑source time synchronization via GPS, BDS, GLONASS, Galileo, 4G, and CDMA. Users can manually select single-GPS, single-Beidou, or dual-satellite mode (GPS + Beidou) via command.
	UTC synchronization accuracy: 20 ns (RMS)
	Tracking and lock‑on sensitivity can reach −166 dBm.
Security Assurance	It allows flexible selection of leap-second handling mechanisms, ensuring timely and secure processing of leap-second events to enable a safe and stable system transition.
	Encryption method: Supports the MD5 security authentication protocol; supports certificate-based encryption protocol. The system supports user authentication and access control capabilities.
	Supports heartbeat detection and hot switchover across multiple devices and network interfaces.
	High reliability, MTBF Time: 90,000 hours
Management approach	Supports management via SSH, Telnet, Web, SNMP, and DNTS‑Manager network management, enabling easy remote network login, administration, configuration, and maintenance.

With 20 years of extensive industry experience, our company has established a strong corporate reputation and brand image, serving clients in the transportation sector, including:

Ministry of Railways of the People’s Republic of China, China Railway Signal & Communication Corporation, Civil Aviation Administration of China, Shandong Provincial Department of Transport, Beijing Railway Bureau, Shanghai Railway Bureau, Guangzhou Railway Bureau, Zhengzhou Railway Bureau, Kunming Railway Bureau, Xinjiang Railway Bureau, Jinan Railway Bureau, Beijing Capital International Airport, Daxing Airport, Xuzhou Airport, Shandong Air Traffic Management Bureau, Dalian Air Traffic Management Bureau, Kunming Air Traffic Management Bureau, Xinjiang Air Traffic Management Bureau, Wenzhou Air Traffic Management Bureau, Chongqing Air Traffic Management Bureau, Chengdu Air Traffic Management Bureau, Zhoushan Port and Shipping Administration, Information Center of Sichuan Provincial Department of Transport, Beijing All-Rail Communication & Signal Research and Design Institute Co., Ltd., China Shipbuilding Industry Corporation, Hebei Expressway, Langfang Expressway Toll Station, Wuhan Expressway ETC, Yinzhou Highway Management Section, Yingguanghong Expressway Meishan Section, Xinjiang Project to Remove Provincial Border Toll Stations on Expressways, National Expressway De–Shang Line, Anlin Expressway Project to Remove Provincial Border Toll Stations, Shuo–Huang Railway Development Co., Ltd., China Communications Construction Company First Highway Engineering Bureau Group Co., Ltd., and others.

The choice of numerous departments and enterprises reflects recognition of Zhongxin Chuang’s products and services. By working in close collaboration with partners from all sectors, we are jointly advancing toward win‑win outcomes for businesses and society alike!

Zhongxin Chuangwei provides a synchronized clock to the Changfeng County Culture and Tourism Bureau.

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Zhongxin Chuangwei provides a synchronized clock to the Changfeng County Culture and Tourism Bureau.

Zhongxin Chuangwei provides a time synchronization server for Tianfu Airport.