Time-Frequency Encyclopedia

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2019

Congratulations to Zhongyuan Petrochemical on winning the bid for the newly developed time synchronization equipment project.

Recently, Zhongyuan Petrochemical has released a time server. of the Demand , Beijing Zhongxin Chuang Company is actively cooperating For users A detailed plan has been prepared, and products independently developed and manufactured by Zhongxin Chuang have been recommended. DNTS-9 Type As the product submitted for this tender, Zhongxin Chuang stood out by defeating competitors’ offerings thanks to its high‑quality products and comprehensive after‑sales service, ultimately… Awarded by Zhongyuan Petrochemical Time server Project 。

Sinopec Zhongyuan Petrochemical Co., Ltd. (hereinafter referred to as Zhongyuan Petrochemical) is a large-scale petrochemical enterprise jointly established through a joint venture between China Petrochemical Corporation and the People’s Government of Henan Province, with Sinopec Corporation holding a controlling stake. It is a national… A key construction project during the Eighth Five-Year Plan period.

Zhongyuan Petrochemical To China–Singapore Innovation Independently developed DNTS-9 series Time server Conduct an in-depth evaluation and arrive at the final results. All Exceeds the parameter requirements ， And Regarding our company’s product quality and after-sales service Also quite satisfied. ， Procured successfully and put into use. ！

The network time server developed by Beijing Zhongxinchuang Technology Co., Ltd. The DNTS‑9 is an intelligent, high‑precision NTP network time server. It obtains standard time information from navigation and positioning satellite systems such as GPS, BeiDou, GLONASS, and Galileo, and provides standard time services over the network via NTP/SNTP or other network protocols. Devices on the network that require time synchronization—such as personal computers, servers, and controllers—can thereby synchronize with international standard time.

Use simultaneously The GNSS satellite receiver allows priority settings and supports single‑receiver/dual‑receiver and single‑antenna/dual‑antenna configurations; each receiver can be configured to operate in timing mode either independently or in conjunction with others. When both receivers and all other available time sources lose signal, the DNTS‑9 relies on its built-in temperature‑compensated crystal oscillator or rubidium atomic clock for holdover, continuously providing time services to external users.

Network protocol	NTP v1, v2, v3, and v4 (RFC 1119 and RFC 1305), SNTP (RFC 2030), 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/SSL/HTTPS (RFC 2616), SSH/SCP (Internet Draft), SNMP v1, v2c, and v3, MIB II (RFC 1213), RSA asymmetric encryption, MD5 authentication, SHA authentication, AES encryption, DES encryption, RC4 encryption.
	IPv4, IPv6, IPv4/IPv6 Hybrid
Timekeeping mode	Support NTP Peer Client/Server Broadcast Multicast
Server performance	GNSS reference mode, Tier‑1 network time server, with an internal synchronization accuracy of 20 ns.
	User terminal synchronization timing accuracy: 0.1–2 ms (typical value for a LAN)
	User capacity: Supports tens of thousands of clients.
	NTP request rate: 25,000 requests per second (per network port)
	Can be used as a client to synchronize with others. NTP network time server
	Support 100,000 log entries; storage capacity can be expanded as needed.
Receiver	72-channel timing‑grade GNSS receiver, multi‑constellation GPS/BeiDou/GLONASS, supports RAIM, CDMA optional.
	UTC synchronization accuracy: 20 ns (RMS)
	Tracking and locking sensitivity can reach -166dBm
Timekeeping function	Temperature-compensated crystal oscillator (optional depending on model): Timing accuracy: standard configuration优于 8.6 µs/day (configurable and upgradeable to meet different requirements)
Timekeeping function	Rubidium atomic clock (optional depending on model): Timing accuracy: standard configuration superior to 500 ns/day (configurable upgrades available to meet varying requirements)
Front panel	VFD high-brightness LCD display
	Display GPS/BD satellite reception status, time, number of GPS/BD satellites, IP addresses of each network port, system operating status, etc.
	6 tri-color indicator lights: PWR, ANT, SAT, LOCK, NTP, ALARM
	Signals indicating power, antenna, satellite, lock, timing, and alarms.
Rear panel	GNSS antenna input: BNC, with 1–2 channels optional.
	NTP network port: 1–10 ports, with optional 10/100/1000 Mbps or 10 Gigabit Ethernet interfaces.
	Console-RS232: 1 port
	USB Interface: 1–8 channels optional, supports USB 2.0/3.0, with backup, restore, and upgrade functions.
	TOD: DB-91 bus, RS232/RS485 levels, capable of outputting time, position, number of satellites, and other information.
	ALARM dry-contact alarm: 1–6 pairs optional, including satellite, power supply, antenna, port capacity, and other alarms.
	10M output: BNC, 1 channel, selectable sine wave or square wave, impedance: 50 ohms; frequency accuracy: <1E-12
	1 PPS output: BNC, TTL level, accuracy ≤ 10 ns (RMS)
	Size: 1U/2U chassis
Physical Environment Parameters	Power supply: AC 220 V ±20%, 47 Hz to 63 Hz; hot-swappable power supplies available as an option.
	Operating temperature: -10℃ to +55℃ (equipment) -40℃ to +75℃ (antenna)
	Storage temperature: -45℃ to +85℃
	Humidity: 95% non-condensing

After a long… With 17 years of industry experience, our company has established a strong corporate reputation and brand image, serving… Petroleum and 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, and our company will continue to… With the corporate mission of “Innovating Technology, Serving a Better Life” and the corporate vision of “Becoming a Creator of Exceptional Quality,” we collaborate sincerely with partners from all sectors to jointly achieve win-win outcomes and shared progress for both our company and society.

Congratulations to the Wuzhou Municipal Public Security Bureau on its procurement of the Zhongxin Chuang NTP clock synchronization equipment project.

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Congratulations to the Wuzhou Municipal Public Security Bureau on its procurement of the Zhongxin Chuang NTP clock synchronization equipment project.

Congratulations to Zhongwei Municipal Traditional Chinese Medicine Hospital on the procurement of the Zhongxin Clock Synchronization System.