Time-Frequency Encyclopedia

Focus on time and frequency, precise and stable.

19

2021

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01

Zhongxin Chuangwei provides clock synchronization equipment to the Sixth People’s Hospital of Luoyang City.

Zhongxin Chuangwei provides clock synchronization equipment to the Sixth People’s Hospital of Luoyang City.

 

Recently, the Sixth People’s Hospital of Luoyang issued a request for a time server. Beijing Zhongxin Chuang Company promptly collaborated to develop a detailed proposal and recommended its independently developed and manufactured DNTS‑8 time server along with digital sub‑clocks as the bid‑eligible products. Following a fiercely competitive bidding process, Zhongxin Chuang stood out thanks to its high‑quality offerings and comprehensive after‑sales service, ultimately securing the contract for the time‑synchronization server project at the Sixth People’s Hospital of Luoyang.

Founded in May 1954, the Sixth People’s Hospital of Luoyang is a comprehensive Grade II-A hospital integrating medical care, disease prevention, education, scientific research, rehabilitation, and emergency services. It also serves as the Luoyang Occupational Disease Prevention and Treatment Institute. The hospital occupies an area of over 12,000 square meters, with a total building area of nearly 65,000 square meters. It currently employs 720 staff members, including 634 professional and technical personnel—among whom are 5 doctors, more than 40 postgraduate degree holders, nearly 100 individuals holding associate senior or higher titles, and 235 with intermediate or higher ranks—and has 602 authorized beds.

Luoyang No. 6 People’s Hospital 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 hospital expressed high satisfaction with both our product quality and after-sales service, leading to a successful 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‑defined time‑broadcast packets from Zhongxinchuang Technology 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-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 in two lines of 20 characters each, showing the current time, the number of satellites, and the device’s operating status.

LEDs indicate power status, satellite lock status, holdover operation, alarms, and NTP validity.

Throughput

Can handle 2,000 time requests per second per port.

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 1E-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 newly created science and technology time data packet:

A total of 32 bytes, with the following details:

Offset Description

00...01 year (00...99)

02...03 months (01...12)

04...05 day (01...31)

06...07 hours (00...23)

08...09 points (00...59)

10...11 seconds (always 00)

12 weeks (1-Mon, 2-Tue, ...)

13 Daylight Saving Time Flag (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 20 years of extensive industry experience, our company has established a strong corporate reputation and brand image, serving clients in the healthcare sector, including:

Peking Union Medical College Hospital, The First Affiliated Hospital of China Medical University, Cancer Hospital of the Chinese Academy of Medical Sciences, Tiantan Hospital of Capital Medical University, Peking University People’s Hospital, Beijing Children’s Hospital, China-Japan Friendship Hospital, Peking University Third Hospital, Beijing Second Hospital, Shanghai First People’s Hospital, Yangpu District Traditional Chinese Medicine Hospital in Shanghai, Shandong Provincial Public Security General Hospital, Rencheng District People’s Hospital in Jining, The Affiliated Hospital of Harbin Medical University, PLA No. 187 Hospital, Kunming First People’s Hospital, Fujian Provincial Hospital, Henan Provincial Second People’s Hospital, The First Affiliated Hospital of Henan University of Science and Technology, Jinan Fifth People’s Hospital, Linzi District Maternal and Child Health Care Hospital, Qufu People’s Hospital, Datong Second People’s Hospital, Beihua University Affiliated Hospital, Suzhou Traditional Chinese Medicine Hospital, Yueyang Traditional Chinese Medicine Hospital, Ar Horqin Banner Hospital, Jiujiang Maternal and Child Health Care Hospital, Luoyang Sixth People’s Hospital, Ar Horqin Banner Traditional Chinese Medicine Hospital, Dongying People’s Hospital, Fushun Central Hospital, Guangxi Medical University Affiliated Hospital, Yanjiao People’s Hospital in Sanhe City, Zhongwei Traditional Chinese Medicine Hospital, Jiangjin District Central Hospital in Chongqing, Jungar Banner Central Hospital, Taizhou Hospital, Yili Jiangsu Hospital, Fushun Central Hospital, Australian People’s Hospital, Quzhou City Hospital, Deyang City Traditional Chinese Medicine Hospital in Sichuan Province, Shandong New Era Pharmaceutical, Lianjiang People’s Hospital, Baoding First People’s Hospital, Enping Maternal and Child Health Care Hospital, and Jinan University Affiliated First Hospital, among others.

The choice of numerous departments and enterprises reflects recognition of Zhongxin Chuang’s products and services. By working in close collaboration with partners across all sectors, we are jointly advancing toward win-win outcomes for businesses and society alike.