Shanghai Globaltime Electronic Co., Ltd.
Main products:Synchronization Network Time Clock
Contact Us
  • Contact Person : Mr. Yi Lei
  • Company Name : Shanghai Globaltime Electronic Co., Ltd.
  • Tel : 86-21-36531186
  • Fax : 86-21-36531185
  • Address : Shanghai,Shanghai,Suite A2-1, Daliu Industrial Park, No.399 Dakang Rd.
  • Country/Region : China
  • Zip : 200443

High performance NTP Time Server with GPS receiver

High performance NTP Time Server with GPS receiver
Product Detailed
receive signals from GPS satellite High performance Synchronize clock and network time CE marked, FCC


The network synchronized clock of high accuracy supplied by GTT100 series of network time servers directly comes from each satellite atomic clock in GPS system (may also choose other satellite time service system as the time reference source in according with users’ request). There is an integration of a 12 channel GPS  receiver inside of GTT100. It can provide high-accuracy time service and synchronized service for network anywhere in the world.

One of the characteristics of GTT100 series of network servers is the friendly user interface. GTT100 series support the practical application of remote access to network administrator. The built-in state display control and the server control are both operated through a sandard interface. GTT100 series of network time servers permit users upgrading the system through FTP remote access. The 10/100M self-adaptive ethernet interface of GTT100 series can enable you to join it up to the existing network conveniently.

The apperance of GTT100 series of network servers symbolizes a major breakthrough in synchronization technology. It combines the satellite time-service synchronization technology with the data processing technology of high speed and large capacity. It also provides the user interface based on ethernet and supports many kinds of network protocols.

GTT100 series of network time servers focus on providing the high-quality products on time service and the synchronized service for all the servers and terminal devices of the entire network. It can be widely applied in all domains of national economy, for example, telecommunication, banks, securities, electric power system, industry, taxation, public security offices, national defense, commercial affairs and so on. It supplies precise and standard time signal for the computer network, the computer application system, the information system, the communication system, the flow control management, the special equipment and so on. Besides, the running quality and quality control of the equipment and system are also raised by a large margin for users.

Features of NTP Time Server GTT100


l Receive signals from GPS satellite system or the dual-satellite system of GPS and GLONASS (optional)

l Support RFC1119/1305 NTP protocol (Network Time Protocol) 

l Support RFC1769/2030 SNTP protocol (Simple Network Time Protocol) 

l Support SNMP, HTTPS, SSH, facilitate the configuration and monitoring

l Different client programs support Windows 98/2000/NT/XP, Linux, Unix, FreeBSD and other operating systems 

l One 10/100 Base-T adaptive network port

l Support 60,000 clients (per minute)

l High-stability crystal or rubidium atomic clock built in, can even maintain a high precision of time in a case of an external time source failure (optional)

l It can set IP and other settings easily by the keyboard and display, and also facilitate configuration.

l Support TOD/1PPS/10MHz output (optional)

l Support 220V AC dual-supply or 48V DC (optional)

l CE / FCC Certification

GPS receiver

l 12 channel GPS receiver

l L1-Band, C/A Code

l Position holding model

l Cold-start time: 200 seconds

l Warm-start time: 50 seconds

l Hot-start time: 25 seconds

l Positional Accuracy: 100 meters

Timing performance

l Server Time Level: Stratum 1

l Server time precision: 1ms

l Precision of client time: 10ms

l Timing capacity: >1000 times per second

l MTBF:> 90,000 hours

Network protocol support

ü RFC 1119/1305 NTP v2/v3/v4

ü RFC 1769/2030 SNTP v2/v3/v4

ü 10/100 Base -T





Physical specification

l Dimension: 48 cm(long) ×4.4 cm(high) ×30 cm(deep)

l 1U 19 inches standard rack mount installation

l Weight: 5kg

Power supply and the environment:

l Power supply: 15W, 176 ~ 264V AC

l Temperature: 0 ~ 50 °C

l Relative humidity: 0~90%RH(non-condensing)


High performance NTP Time Server with GPS receiver

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