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2020

Zhongxin Chuangwei provides a precision clock for Daxing Airport.

Zhongxin Chuangwei provides a precision clock for Beijing Daxing International Airport.

Recently, Beijing Daxing International Airport issued a request for a time server. Beijing Zhongxin Chuang promptly collaborated to develop a detailed proposal and recommended its self‑developed and manufactured DNTS‑9 clock‑type product as the bid item. Following a fiercely competitive bidding process, Zhongxin Chuang stood out by virtue of its high‑quality products and comprehensive after‑sales service, ultimately securing the Beijing Daxing Airport clock synchronization project.

Beijing Daxing International Airport (Beijing Daxing International Airport, IATA :PKX, ICAO : ZBAD), a 4F-class civil airport [1]; located in China Beijing City Daxing District and Hebei Province Langfang City At the junction of Guangyang District, it is 46 kilometers from Beijing’s Tiananmen Square [2], 26 kilometers from Langfang City [2], and 55 kilometers from the Xiong’an New Area [3], and is located… Capital Airport 67 kilometers [4]

Beijing Daxing International Airport conducted an in-depth evaluation of the DNTS‑9 clock server, independently developed by Zhongxin Chuang. The results exceeded all specified performance parameters, and the airport expressed strong satisfaction with both our product quality and after-sales service, leading to a successful procurement and deployment.

The DNTS-9 network time server, developed by Beijing Zhongxinchuang Technology Co., Ltd., is an advanced, intelligent, high-precision NTP network time server. The DNTS-9 obtains standard time information from navigation and positioning satellite systems such as GPS, BeiDou, GLONASS, and Galileo, and provides standard time services over the network via NTP/SNTP or other network protocols. Devices on the network that require time synchronization—such as personal computers, servers, and controllers—can synchronize with international standard time. When using GNSS satellite receivers, users can define priority levels and configure single-receiver/dual-receiver or single-antenna/dual-antenna setups; each receiver can be set to operate in standalone or combined timing modes. If both receivers and other available time sources lose signal, the DNTS-9 relies on its built-in temperature-compensated crystal oscillator or rubidium atomic clock to maintain accurate timekeeping and continuously provide time services to external devices.

In addition to serving as a primary‑level network time‑synchronization device, the DNTS‑9 can also function as a secondary‑level time server, enabling more effective time synchronization in large‑scale network environments. The DNTS‑9 network time server is extremely easy to install and deploy: simply connect the satellite receiving antenna and link the Ethernet port to a network switch, and the entire network will achieve synchronized time across all connected devices.

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
Timekeeping mode	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.
	User terminal synchronization timing accuracy: 0.1–2 ms (typical value on a local area network)
	User capacity: Supports tens of thousands of clients.
	NTP request rate: 25,000 requests per second (per network port)
	It can be used as a client to synchronize with other NTP network time servers.
	Supports logging up to 100,000 entries and allows storage capacity to be expanded as needed.
Receiver	72-channel timing‑grade GNSS receiver, multi‑constellation GPS/BeiDou/GLONASS, supports RAIM, with optional CDMA support.
	UTC synchronization accuracy: 20 ns (RMS)
	Tracking and lock‑on sensitivity can reach −166 dBm.
Timekeeping function	Temperature‑compensated crystal oscillator (optional, depending on model): Timing accuracy: standard configuration better than 8.6 µs/day (configurable upgrades available to meet specific requirements).
Timekeeping function	Rubidium atomic clock (optional depending on model): Timing accuracy: standard configuration better than 500 ns/day (configurable upgrades available to meet varying requirements).
Front panel	VFD high-brightness LCD display
	Displays GPS/BD satellite acquisition status, time, number of GPS/BD satellites, IP addresses of each network port, system operating status, and more.
	Six tri-color indicator lights: PWR, ANT, SAT, LOCK, NTP, ALARM
	Signals indicating power, antenna, satellite, lock, timing, and alarms.

With 18 years of industry experience, our company has established a strong corporate reputation and brand image, serving clients in the transportation sector, including:

The Ministry of Railways of the People’s Republic of China, China Railway Signal & Communication Corporation, Civil Aviation Administration of China, Shandong Provincial Department of Transportation, 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, 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 Transportation, Beijing All-Rail Communications and Signaling Research & Design Institute Co., Ltd., China Shipbuilding Industry Corporation, Hebei Expressway, Langfang Expressway Toll Station, Wuhan Expressway ETC, Yinzhou Highway Management Section, Meishan Section of Yingguanghong Expressway, Xinjiang Project to Eliminate 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., and others.

The choice of numerous departments and enterprises reflects recognition of Zhongxin Chuang’s products and services. Our company will continue to uphold our corporate mission of “Innovative Technology, Serving a Better Life,” working in close collaboration with partners across all sectors to achieve mutual success and shared progress for both our enterprise and society.

Congratulations to Peking University on its procurement of the newly developed clock synchronization equipment.

Zhongxin Chuangwei provides precise timing for Sichuan Province’s radio and television broadcasting.

Congratulations to Peking University on its procurement of the newly developed clock synchronization equipment.

Zhongxin Chuangwei provides precise timing for Sichuan Province’s radio and television broadcasting.