Time-Frequency Encyclopedia

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2023

Congratulations to Zhongxin Chuang on winning the bid for the DNTS-8 time synchronization equipment for Gansu CECEP Wind Power.

Congratulations to Zhongxin Chuang for winning the bid for the DNTS-8 time synchronization equipment for Gansu China Energy Conservation Wind Power Generation.

Recently, Gansu Zhongjie Neng Wind Power Generation Co., Ltd. issued a procurement announcement for time servers. Beijing Zhongxin Chuang promptly collaborated to develop a detailed proposal for the client and recommended its independently developed and manufactured DNTS‑84 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 contract for the time server project from Gansu Zhongjie Neng Wind Power Generation Co., Ltd.

China Energy Conservation Wind Power Co., Ltd. (stock abbreviation: Jingneng Wind Power; stock code: 601016) is a modern joint-stock company controlled by China Energy Conservation and Environmental Protection Group Co., Ltd. The company was listed on the Main Board of the Shanghai Stock Exchange on September 29, 2014, and is a constituent stock of both the CSI 500 Index and the SSE 380 Index. Its predecessor, China Energy Conservation Wind Power Investment Co., Ltd., was established through investment by China Energy Conservation and Environmental Protection Group Co., Ltd. in response to the national call to build a resource‑conserving and environmentally friendly society, with the aim of accelerating the development of wind power and other renewable energy sources and aligning with the Group’s strategic objectives for its core business. The company specializes in wind power project development, investment management, construction, and operation and maintenance.

Gansu Zhongjie Neng Wind Power Generation Co., Ltd. conducted an in-depth evaluation of the DNTS‑84 time server independently developed by Zhongxin Chuang, and the results all exceeded the specified performance requirements. The company also expressed high satisfaction with our product quality and after-sales service, proceeding to place a successful order and put the system into operation.

The DNTS-84-OGB 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 time. The DNTS-84-OGB time server obtains standard clock signal information from GPS or BeiDou 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 both GPS and BeiDou receivers are in use, a priority can be configured; by default, BeiDou takes precedence, with GPS serving as a backup. If neither receiver receives a signal, the DNTS-84-OGB relies on its built-in temperature-compensated crystal oscillator for timekeeping, achieving a timing accuracy of up to 1E-9. The DNTS-84-OGB disseminates standard clock information over TCP/IP networks and supports multiple popular time‑broadcasting 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, the DNTS-84-OGB supports the broadcast mode of the SNTP protocol.

Network Protocol:	NTP v1, v2, v3, and v4 (RFC 1119 and RFC 1305) SNTP (RFC 2030) MD5 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, SNMP v1 and v2, MIB II (RFC 1213), RSA asymmetric encryption
	IPV4
NTP Server Performance:	GPS/BD clock reference mode, Tier‑1 network time server, internal synchronization accuracy of 1 µs.
	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 new 50 log recording features.
GPS/BD receiver:	50-channel timing‑grade GPS/BD receiver, available in single‑GPS, single‑BD, and GPS/BD dual‑mode configurations, 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.
Equipment Timing Function:	Temperature‑compensated crystal oscillator (optional, depending on model): Timing accuracy: better than 1E‑10.
Equipment Timing Function:	Rubidium atomic clock (optional depending on model): Timing accuracy: better than 1E-12
Front panel:	VFD high-brightness LCD screen
	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,
Timekeeping Management Software Performance
Client-side time synchronization software:	Provides NTP‑based time‑synchronization software for Windows, running as a service and offering a monitoring, control, and configuration interface. Client support includes operating systems such as Windows 98, NT, 2000, XP, Vista, 7, Unix, Linux, AIX, and others.
DNTS-Manager Network Time Synchronization System Monitoring Software:	Provides timing‑monitoring software for NTP servers and clients, enabling the monitoring of synchronization and time‑offset status on both NTP servers and timing clients, with alert and log generation. Alerts can be delivered via syslog, email, and other protocols. The system supports simultaneous monitoring of at least 1,000 NTP servers and at least 10,000 client devices. Monitoring includes NTP server information such as uptime, synchronization status, and network parameters; it also tracks NTP server time‑synchronization status, including satellite time, server time, and synchronization with reference sources. Features include management of server and client lists, threshold settings, and configuration options for email and syslog notifications, along with delivery‑status controls.

With 21 years of industry experience, our company has established a strong corporate reputation and brand image, serving… Energy

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 Minguang 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 across all sectors to jointly achieve win‑win outcomes and shared progress for both our enterprise and society.

Congratulations to the National Accounting Institute in Beijing on procuring the newly developed clock synchronization equipment.

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Congratulations to the National Accounting Institute in Beijing on procuring the newly developed clock synchronization equipment.

Zhongxin Chuangwei provides clock synchronization equipment to Lianhong Chemical.