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2019

Congratulations to CRRC Qingdao Sifang Locomotive & Rolling Stock Co., Ltd. on the procurement of the Zhongxin Chuang DNTS-8 time synchronization equipment.

Recently, CRRC Qingdao Sifang Locomotive & Rolling Stock Co., Ltd. had a need for time synchronization. Beijing Zhongxin Chuang promptly collaborated to develop a detailed solution and recommended its independently 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 contract for the time‑server project from CRRC Qingdao Sifang.

CRRC Qingdao Sifang Locomotive & Rolling Stock Co., Ltd. (hereinafter referred to as “CRRC Sifang”) is a core subsidiary of CRRC Corporation Limited, a national base for the industrialization of high-speed trains, a leading domestic manufacturer of subway and light-rail vehicles, and an important export hub for China’s rail transit equipment.

CRRC Qingdao Sifang Locomotive & Rolling Stock Co., Ltd. Developed independently by Zhongxin Chuang DNTS-8 series The time server underwent rigorous testing, and the results consistently exceeded the requirements of the on-site environment. We are highly satisfied with both the product quality and the after-sales service, and have successfully procured and put it into operation.

The DNTS-81-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 timekeeping. The DNTS-81-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-81-OGB relies on its built-in temperature-compensated crystal oscillator for timekeeping, achieving a timing accuracy of up to 1E-9. The DNTS-81-0GB disseminates standard clock information over TCP/IP networks and supports multiple popular time‑broadcasting protocols, including NTP and time/UDP, as well as custom time‑broadcast packets defined by Zhongxinchuang Technology, which can be transmitted via 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-81-0GB 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 and local dry-contact alarm outputs, with a maximum current of 10 A.
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 17 years of extensive industry experience, our company has established a strong corporate reputation and brand image, serving… Railway Transportation

Our clients also include:

Ministry of Railways of the People’s Republic of China, China Railway Signal & Communication Group, 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, 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 the Sichuan Provincial Department of Transportation, Beijing All-Rail Communications and Signaling Research & Design Institute Co., Ltd., China Shipbuilding Industry Corporation, 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” 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 Shanxi Provincial Department of Finance on its procurement of the Zhongxin Chuang DNTS-8 time synchronization device.

Congratulations to Shaanxi Yulin Energy Group Co., Ltd. on the procurement of Zhongxin Chuang’s DNTS-7 series time synchronization equipment.

Congratulations to the Shanxi Provincial Department of Finance on its procurement of the Zhongxin Chuang DNTS-8 time synchronization device.

Congratulations to Shaanxi Yulin Energy Group Co., Ltd. on the procurement of Zhongxin Chuang’s DNTS-7 series time synchronization equipment.