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Phone: +86-10-62893032

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R&D Center: 4th Floor, Yicheng International Center, Haidian District, Beijing

High-Precision NTP Server DNTS-7

DNTS-7 is a high-tech, intelligent, stand-alone time server based on the NTP/SNTP protocol.

Keywords:

Time & Frequency

Time Server

Category:

Time-Frequency Series

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+86-10-62893032

For details, please contact Mr. Yu.

For more details, please contact Engineer Wen.

Product Features

Product Overview

Technical Specifications

Optional accessories

Product Features
Product Overview
Base parameter
Optional accessories

- Commodity name: High-Precision NTP Server DNTS-7
DNTS-7 is a high-tech, intelligent, stand-alone time server based on the NTP/SNTP protocol.

Product Features
Product dimensions: 19-inch 1U
1–8 10/100M network ports: NTP V1.0, V2.0, V3.0, V4.0
Product Overview

The network time server DNTS-7, developed by Beijing Zhongxinchuang Technology Co., Ltd., is a high-tech, intelligent, stand-alone time server based on the NTP/SNTP protocols. DNTS-7 obtains standard clock signal information from GPS geostationary satellites and transmits this information across the network, enabling devices that require time signals—such as computers and controllers—to synchronize with the standard clock. Standard clock information is transmitted via the TCP/IP network, and DNTS-7 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, DNTS-7 supports the broadcast mode of the SNTP protocol.

The DNTS‑7 is available in several models: the DNTS‑71 features one 10/100M adaptive Ethernet port; the DNTS‑72 has two such ports; the DNTS‑74 offers four; the DNTS‑76 provides six; and the DNTS‑78 includes eight. The Ethernet ports are physically isolated from one another to ensure data security, and they can all be configured to belong to the same network segment or to different segments. The device also supports redundancy, so a failure of one port will not affect the operation of the others. Each Ethernet port must be assigned an independent IP address.

Technical Specifications

Timing accuracy	1-10ms
Supported protocols	NTP/SNTP V10, V20, V30, V40, SNMP, UDP, Telnet, IP, TCP
Number of network ports	1–8 10/100M adaptive ports
CPU	Both CPUs operate simultaneously; the 32-bit CPU is a dual-core processor. Significant performance improvement
Throughput	Can handle 2,000 time requests per second.
Timekeeping Record	Maintain the New 50 Measures
Local Alarm	LED indicator
Output	1 RS232 port, 1 RS485 port, 1 1PPS port
Serial input	One RS-232 port, which can serve as an external time source.
Optional module	B-code input, B-code output; BeiDou receiver; rubidium atomic clock, daily drift rate 1E-12; Temperature‑compensated crystal oscillator, with a daily aging rate of 1E-10; Antenna feeder surge arrester, 50-, 80-, and 100-meter cables

Optional accessories

Accessory Name	Number of accessories	Accessory Features
GPS antenna	1 piece	Standard configuration includes a 30-meter black antenna with a BNC connector; the top end houses a GPS satellite signal receiver for capturing GPS satellite signals.
Antenna mounting bracket	1 piece	Top receiver component used to secure the GPS antenna
Power cord	1 piece	Standard three-wire power cord, used to supply power to the device.
CD-ROM	1 sheet	Includes a time server manual, time‑synchronization software, and other materials.

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Product Overview

The network time server DNTS-7, developed by Beijing Zhongxinchuang Technology Co., Ltd., is a high-tech, intelligent, stand-alone time server based on the NTP/SNTP protocols. DNTS-7 obtains standard clock signal information from GPS geostationary satellites and transmits this information across the network, enabling devices that require time signals—such as computers and controllers—to synchronize with the standard clock. Standard clock information is transmitted via the TCP/IP network, and DNTS-7 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, DNTS-7 supports the broadcast mode of the SNTP protocol.

The DNTS‑7 is available in several models: the DNTS‑71 features one 10/100M adaptive Ethernet port; the DNTS‑72 has two such ports; the DNTS‑74 offers four; the DNTS‑76 provides six; and the DNTS‑78 includes eight. The Ethernet ports are physically isolated from one another to ensure data security, and they can all be configured to belong to the same network segment or to different segments. The device also supports redundancy, so a failure of one port will not affect the operation of the others. Each Ethernet port must be assigned an independent IP address.

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Technical Specifications

Timing accuracy	1-10ms
Supported protocols	NTP/SNTP V10, V20, V30, V40, SNMP, UDP, Telnet, IP, TCP
Number of network ports	1–8 10/100M adaptive ports
CPU	Both CPUs operate simultaneously; the 32-bit CPU is a dual-core processor. Significant performance improvement
Throughput	Can handle 2,000 time requests per second.
Timekeeping Record	Maintain the New 50 Measures
Local Alarm	LED indicator
Output	1 RS232 port, 1 RS485 port, 1 1PPS port
Serial input	One RS-232 port, which can serve as an external time source.
Optional module	B-code input, B-code output; BeiDou receiver; rubidium atomic clock, daily drift rate 1E-12; Temperature‑compensated crystal oscillator, with a daily aging rate of 1E-10; Antenna feeder surge arrester, 50-, 80-, and 100-meter cables

This is placeholder text.

Optional accessories

Accessory Name	Number of accessories	Accessory Features
GPS antenna	1 piece	Standard configuration includes a 30-meter black antenna with a BNC connector; the top end houses a GPS satellite signal receiver for capturing GPS satellite signals.
Antenna mounting bracket	1 piece	Top receiver component used to secure the GPS antenna
Power cord	1 piece	Standard three-wire power cord, used to supply power to the device.
CD-ROM	1 sheet	Includes a time server manual, time‑synchronization software, and other materials.