Time-Frequency Encyclopedia

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2024

Congratulations to Lenzing (Nanjing) Fiber Co., Ltd. on the successful procurement of the newly developed DNTS-8 time synchronization device.

Congratulations to Lenzing (Nanjing) Fiber Co., Ltd. on the successful procurement of the newly developed DNTS-8 time synchronization device.

Recently, Lenzing (Nanjing) Fiber Co., Ltd. issued a procurement announcement for a time‑server. Beijing Zhongxin Chuang promptly collaborated to develop a detailed proposal and recommended its self‑developed and manufactured DNTS‑8 model 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 time‑server project from Lenzing (Nanjing) Fiber Co., Ltd.

Lenzing Group is a global leader in cellulose fiber products and one of the most successful companies in the fiber industry. Lenzing is a global manufacturer of high-performance materials, transforming carbon dioxide and sunlight into efficient, elegant, and emotionally resonant products. Its offerings are widely used in the fashion and home‑textile sectors. Headquartered in Austria, Lenzing currently operates seven production facilities worldwide—two in Austria, as well as plants in the United Kingdom, the United States, Nanjing, China, and Indonesia—and maintains a global network of service and support offices. The company employs approximately 7,000 people worldwide.

Lan Jing (Nanjing) Fiber Co., Ltd. conducted an in-depth evaluation of the DNTS‑8 time server independently developed by Zhongxin Chuang. The results consistently exceeded the specified performance parameters, and the company expressed high satisfaction with both our product quality and after-sales service, proceeding to place a successful order and put the system into operation.

The network time server DNTS, developed by Beijing Zhongxinchuang Technology Co., Ltd., is a high-tech, intelligent, stand-alone, high-precision network time server based on the NTP/SNTP protocols. DNTS obtains standard clock signal information from GPS or BeiDou geostationary satellites and transmits this information over the network, enabling devices that require time signals—such as computers and controllers—to synchronize with the standard clock. When both GPS and BeiDou receivers are used, a priority can be defined; by default, BeiDou takes precedence, with GPS serving as a backup. If neither receiver has a signal, the DNTS‑8 relies on its built-in temperature‑compensated crystal oscillator or rubidium atomic clock for timekeeping, achieving a timekeeping accuracy of up to 1E‑12. DNTS transmits standard clock information via TCP/IP networks and supports multiple popular time‑distribution protocols, including NTP and time/UDP, as well as Zhongxinchuang’s proprietary time‑broadcast data packets with configurable UDP ports. The port numbers for NTP and time/UDP are fixed at 123 and 37, respectively, as specified in RFC‑123 and RFC‑37. Additionally, DNTS supports the broadcast mode of the SNTP protocol.

	User terminal synchronization timing accuracy: 0.5–2 ms (typical value on a local area network)
	User capacity: Supports tens of thousands of clients.
	NTP request rate: 2,000 requests per second (per network port)
	It can serve as a subordinate server to synchronize with other NTP network time servers.
	Supports the latest 50 log entries feature.
GPS/BD receiver:	50-channel timing‑grade GPS/BD receiver, available as a single‑GPS, single‑BD, or GPS/BD dual‑mode unit, with CDMA option.
	UTC synchronization accuracy: 30 ns (RMS)
	Receives L1 C/A code signal at 1575.42 MHz
	Tracking and lock‑on sensitivity can reach −160 dBm.
Device Timing Function:	Temperature‑compensated crystal oscillator (optional, depending on model): Timing accuracy: better than 1E‑10.
Device Timing Function:	Rubidium atomic clock (optional, depending on model): Timing accuracy: better than 1E-12.
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, and system operating status.
	5 indicator lights: PWR, LOCK, HOLD, ALARM, TIME
	Indicates whether the NTP service is running and whether the network connection is normal,
Rear panel:	GPS/BD antenna input: BNC, 1 channel, L1, 1575.42 MHz, output 3.3 V DC
	Network port: RJ-45, 1–12 ports (optional depending on model), 10/100 Mbps adaptive Ethernet interface.
	TOD: DB-9 female, 1 channel, RS232/RS485 level, providing information such as time, position, and number of satellites.
	ALARM dry-contact alarm: 1 pair, including satellite loss-of-lock and other alarms.
	10M output: BNC, 1 channel, sine wave, impedance: 50 ohms; frequency accuracy: <1E-12
	B-code (DC) output: BNC, 1 channel, TTL level, compliant with IRIG Standard 200-89 (Format B CODE) and GJB2242-94 standards.
	B-code (DC) input: BNC, 1 channel, TTL level, compliant with IRIG Standard 200-89 (Format B CODE) and GJB2242-94 standards.
	1 PPS output: BNC, 1 channel, TTL level, accuracy 20 ns (RMS)

With 17 years of industry experience, our company has established a strong corporate reputation and brand image, serving… Petrochemicals

Our clients also include:

Sinopec, Shanghai Petrochemical, Tianjin Petrochemical, Yanshan Petrochemical, Zhanjiang Petrochemical, Langfang Petrochemical, Gansu Petrochemical, Anqing Petrochemical, Zhongyuan Petrochemical, Daqing Oilfield, Daqing Refining & Chemical, Qinshan Nuclear Power Plant, Kunlun Gas, Hope Gas, PetroChina Yellow Sea Storage Base, Beijing Shougang Co., Ltd., Hebei Shougang Qian’an Iron & Steel Co., Ltd., Fujian Sangang Mingguang Co., Ltd., Angang Steel Co., Ltd., Chongqing Iron & Steel (Group) Co., Ltd., Tianjin Jinwanhang Petroleum Materials & Equipment 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 “Innovating Technology, Serving a Better Life” and pursue the corporate goal of “Becoming a Creator of Exceptional Quality,” working in sincere collaboration with partners from all sectors to achieve mutual success and shared progress for both our enterprise and society.

Zhongxin Chuangwei provides a time synchronization server to Tsinghua University.

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Zhongxin Chuangwei provides a time synchronization server to Tsinghua University.

Zhongxin Chuangwei provides a time synchronization server to Kaiping Central Hospital.