Time-Frequency Encyclopedia

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2020

Zhongxin Chuangwei provides precise clock synchronization for Zhejiang China Tobacco Industry Co., Ltd.

Recently, China Tobacco 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‑8 time server as the product for this tender. 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 contract. Ultimately won China Tobacco Time and Step server project.

　　 Zhejiang China Tobacco Industry Co., Ltd. was restructured from Zhejiang China Tobacco Industry Company and is among the first batch of provincial-level industrial enterprises in the tobacco industry to establish a board of directors system.

China Tobacco Developed independently by Zhongxin Chuang DNTS-8 The time server underwent rigorous testing, and the results consistently exceeded the specified performance parameters. We are highly satisfied with both the product’s quality and our after-sales service, and have proceeded smoothly with procurement and deployment.

The DNTS-8 time server, developed by Beijing Zhongxinchuang Technology Co., Ltd., is a high-tech, intelligent, stand-alone clock synchronization server that operates based on the NTP/SNTP protocols and delivers high precision. The DNTS-8 time server obtains standard clock signal information from GPS geostationary satellites and transmits this information across the network, enabling devices requiring time signals—such as computers and controllers—to synchronize with the standard clock. When all receivers lose signal, the DNTS-8 relies on its built-in temperature-compensated crystal oscillator for timekeeping, achieving a timing accuracy of up to 1E-9. The DNTS-8 uses standard clock information transmitted over TCP/IP networks and supports multiple popular time‑broadcasting protocols, including NTP and time/UDP; it can also accommodate custom time‑broadcast packets defined by Zhongxinchuang Technology, 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, the DNTS-8 supports the broadcast mode of the SNTP protocol.

Product dimensions	19-inch 1U
Receiver	Built-in GPS Receiver
Built-in clock	Built-in temperature-compensated crystal oscillator; even when satellite signals are lost, it continues to output a standard time signal.
Liquid crystal display	LCD displays the time, Two lines, each with 20 characters, display the time, number of satellites, and device operating status. LEDs indicate power status, satellite lock status, hold‑over operation, alarms, and NTP validity.
Throughput	Can meet per second per mouth 2 000 time requests
Local Alarm	Supports SNMP alarms, local dry-contact alarm output, current rating 10A.
Output interface	RS232/485, IRIG-B, 10M, 1PPS, 10 MHz sine wave output, BNC connector 1 PPS output, BNC connector IRIG-B code output, BNC interface IRIG-B code input, BNC interface RS232 output, supports the TL1 protocol.
Input interface	Serial port input; time can be set manually, and it can serve as an external clock source.
Timekeeping function	Even when satellite signals are lost, it must still output a standard time signal, with the temperature-compensated crystal oscillator achieving an accuracy of better than 1 × 10⁻¹².
Encryption Verification	Provides MD5 encryption verification functionality.
Network management functions	It features comprehensive SNMP network management capabilities.
Feature Extension	Supports expanding to select other functional modules.
Settings Management	Supports configuration and management via web pages, Telnet, and other methods.
Timekeeping Record	Time‑synchronization logs can be viewed via the web interface and Telnet; the installed software can store an unlimited number of records.
UDP operating mode	Provides the UDP broadcast protocol, enabling connection to electronic clock LED displays. You can configure at least eight UDP remote IP addresses and port numbers: Output the new science and technology time data packet: A total of 32 bytes, with the following details: Offset Description 00...01 year (00...99) 02...03 Month (01...12) 04...05 days (01...31) 06...07 o'clock (00...23) 08...09 Minutes (00...59) 10...11 seconds (always 00) 12 Day of the week (1-Mon, 2-Tue, ...) 13 Daylight Saving Time indicator (0-no, 1-yes) 14 String terminator, ‘\0’ 15 String terminator, ‘\0’ 16...19 32-bit CET/CST time in UNIX format 20...23 32-bit GMT time in UNIX format 24...31 All 0

With 18 years of industry experience, our company has established a strong corporate reputation and brand image, serving clients across various sectors, including:

Shenzhen-based Huawei, ZTE Corporation, Ericsson, Datang Telecom, Digital China (China) Co., Ltd., Unisplendour Corporation, Shanghai Bell, Honeywell (China) Co., Ltd., Yokogawa Electric (China) Co., Ltd., Emerson (China) Motor Co., Ltd., Nokia, Siemens (China) Co., Ltd., ABB China, Schneider Electric (China) Co., Ltd., Zhejiang Dahua Group, Sail Network Technology Co., Ltd., Qingdao Hisense Network Technology Co., Ltd., Fujian Newland Software Engineering Co., Ltd., Beijing HuaSheng TianCheng Technology Co., Ltd., Fujian Rongji Software Co., Ltd., Shanghai Baoxin Software Co., Ltd., Shanghai Tianbai Broadband Network Technology Co., Ltd., China Tobacco (Yunnan) Reconstituted Tobacco Leaf Co., Ltd., BOE Technology, Lenzing (Nanjing) Fibers Co., Ltd., Taiwan’s Formosa Plastics, Weihai Triangle Tire, Henan Huayuan Photovoltaic Technology, Jiaxing Duoneng Automation Equipment Co., Ltd., Tangshan Sanyou Chlor-Alkali 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 will jointly achieve win‑win outcomes and shared progress for both businesses and society.

Zhongxin Chuang has provided NTP clock synchronization equipment to the National Astronomical Observatories of the Chinese Academy of Sciences.

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Zhongxin Chuang has provided NTP clock synchronization equipment to the National Astronomical Observatories of the Chinese Academy of Sciences.

Zhongxin Chuangwei provides a clock synchronization system to the Shenzhen United Property Exchange.