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2022

Zhongxin Chuangwei provides a precision clock to the Zhejiang Provincial Medium-Wave Transmission Management Center.

Zhongxin Chuangwei provides a precision clock to the Zhejiang Provincial Medium-Wave Transmission Management Center.

Recently, the Zhejiang Provincial Medium-Wave Transmission Management Center issued a request for a time server. Beijing Zhongxin Chuang Co., Ltd. proactively collaborated to develop a detailed proposal and recommended its independently developed and manufactured DNTS-94-OGB 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 time‑synchronization project from the Zhejiang Provincial Medium-Wave Transmission Management Center.

The Zhejiang Provincial Medium-Wave Broadcasting Transmission Management Center (hereinafter referred to as the “Center”) was established in 2001. It is a purely public‑service institution approved by the Provincial Organization Committee and under the administration of the Zhejiang Radio and Television Group. In 2000, in accordance with a document issued by four central ministries, all provincial broadcasting relay stations were transferred en masse to provincial management. With approval from the Provincial Organization Committee, the Center was designated as a non‑profit public‑service entity, receiving full funding from the provincial treasury and reporting to the Zhejiang Radio and Television Group. Under the Group’s unified coordination, the Center is responsible for managing and coordinating technical, asset‑related, personnel, and financial matters across the province’s 30 broadcasting relay stations. The Center has an authorized staff complement of 15, including a director and deputy directors, and comprises an Office, a Planning and Finance Section, and a Technical Section. At present, the Center itself employs 10 staff members.

The Zhejiang Provincial Medium-Wave Transmission Management Center conducted an in-depth evaluation of the DNTS-94-OGB series time servers independently developed by Zhongxin Chuang. The results exceeded all specified performance parameters, and the center expressed high satisfaction with both our product quality and after-sales service, leading to a successful procurement and deployment.

The DNTS-9 network time server, developed by Beijing Zhongxinchuang Technology Co., Ltd., is an intelligent, high-precision NTP network time server. The DNTS-9 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 in the network that require time synchronization—such as personal computers, servers, and controllers—can synchronize with international standard time.

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	Supports 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 on a local area network)
	User capacity: Supports tens of thousands of clients.
	NTP request rate: 25,000 requests per second (per network port)
	It can be used as a client to synchronize with other NTP network time servers.
	Supports logging up to 100,000 entries and allows storage capacity to be expanded as needed.
Receiver	72-channel timing‑grade GNSS receiver, multi‑constellation GPS/BeiDou/GLONASS, supports RAIM, with optional CDMA support.
	UTC synchronization accuracy: 20 ns (RMS)
	Tracking and lock‑on sensitivity can reach −166 dBm.
Timekeeping function	Temperature‑compensated crystal oscillator (optional, depending on model): Timing accuracy: standard configuration better than 8.6 µs/day (configurable upgrades available to meet varying requirements).
Timekeeping function	Rubidium atomic clock (optional depending on model): Timing accuracy: standard configuration better than 500 ns/day (configurable upgrades available to meet various requirements).
Front panel	VFD high-brightness LCD display
	Displays GPS/BD satellite acquisition status, time, number of GPS/BD satellites, IP addresses of each network port, system operating status, and more.
	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 to 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)
	Dimensions: 1U/2U chassis
Physical Environment Parameters	Power Supply: AC 220 V ±20%, 47 Hz to 63 Hz; hot-swappable redundant power supplies available as an option.
	Operating temperature: -10°C to +55°C (equipment), -40°C to +75°C (antenna)
	Storage temperature: -45°C to +85°C
	Humidity: 95% non-condensing

With 20 years of industry experience, our company has established a strong corporate reputation and brand image, serving clients in the public security sector, including:

State Administration of Radio, Film and Television; National Radio and Television Monitoring Center; Sichuan Radio and Television Network Co., Ltd.; Tianjin Radio and Television Station; Yunnan People’s Broadcasting Station; Guangxi Radio and Television Center; Inner Mongolia Radio and Television Network Co., Ltd.; Hubei Provincial Radio and Television Group; Jiangsu Provincial Radio and Television Group; Shanxi Radio and Television Network Co., Ltd.; Henan Radio and Television Network Co., Ltd.; Shanghai Culture, Radio, Film and Television Group; Xiangfan Cable Radio and Television Network Center; Tongliao Bureau of Radio, Film and Television; Guangzhou Coast Radio Station; Dali Cangshan Television Relay Station; Tianjin Radio, Film and Television Group; Guangxi Radio and Television Technology Center; Jiangyin Radio and Television Network Transmission Center; Jiangxi Radio and Television Network Co., Ltd.

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,” working in sincere collaboration with partners across all sectors to jointly achieve win‑win outcomes and shared progress for both the enterprise and society.

Zhongxin Chuangwei provides a precision clock to Tangshan Iron and Steel Group Co., Ltd.

Zhongxin Chuangwei provides clock synchronization equipment to Huatai Securities Co., Ltd.

Zhongxin Chuangwei provides a precision clock to Tangshan Iron and Steel Group Co., Ltd.

Zhongxin Chuangwei provides clock synchronization equipment to Huatai Securities Co., Ltd.