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User manual of GTT-030
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Chapter 1 Basic information and packaging·····················································································02
1.1 Key features······································································································································02
1.2 Packaging··········································································································································02
1.3 Outline················································································································································02
1.4 The device description···················································································································· 03
Chapter 2
Hardware installation and commissioning·································································· 04
2.1 The device structure···································································································· 04
2.2 Outdoor installation····································································································04
2.3 Indoor installation······································································································ 06
Chapter 3
Equipment Maintenance··································································································· 07
3.1 Indicator state··································································································································· 07
3.2 Server Configuration Debugging··································································································· 07
3.2.1 User Login····································································································································································· 08
3.2.2 View the network status············································································································································· 09
3.2.3 Change network setting············································································································································· 09
3.2.4 Display the status························································································································································ 10
3.2.5 Chage the password··················································································································································· 10
3.2.6 Exit·················································································································································································· 11
3.2.7 Time server logon through the network·················································································································· 11
3.3 Remote dial-up maintenance········································································································· 11
3.4 Client Configuration························································································································· 12
3.5 Troubleshooting································································································································13
3.5.1 All indicator lights are off when power is on·········································································································· 13
3.5.2 Receiving no satellite signals for a long term········································································································ 13
3.5.3 Can not ping the time server after configuration·································································································· 14
3.5.4 Instability state of receiving satellite signal/the equipment is in hold mode··················································· 1 4
3.5.5 The client can not receive timing service··············································································································· 14
3.5.6 How to configure the network equipment to receive time service···································································· 1 5
Detailed performance index of the equipment····························································16
Chapter 5
Appendix······························································································································· 17
Catalog
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Related Manuals for GlobalTime Electronic GTT-030
Summary of Contents for GlobalTime Electronic GTT-030
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Page 1: Table Of Contents
GlobalTime NTP Products User manual of GTT-030 Catalog ····················································································································································· 1 Catalog Chapter 1 Basic information and packaging·····················································································02 1.1 Key features······································································································································02 1.2 Packaging··········································································································································02 1.3 Outline················································································································································02 1.4 The device description···················································································································· 03 Chapter 2 Hardware installation and commissioning·································································· 04 2.1 The device structure···································································································· 04 2.2 Outdoor installation····································································································04... -
Page 2: Chapter 1 Basic Information And Packaging
GTT-030 network time server is the professional network equipment, providing highly-stable time source. GTT-030 network time server receives GPS satellite signals and extracts the timing information to adjust the server's local time. It distributes standard time via NTP protocol (Network Time Protocol). Upon the PC or server which need time synchronization services, a client program will read the NTP protocol, derive time information, and modify the time of related equipment. -
Page 3: The Device Description
GTT-030 network time server use a professional 12-channel GPS receiver. It can receive and lock the satellite signal fast and reliably. -
Page 4: Hardware Installation And Commissioning
The interior part is the master device of GTT-030 network time server to complete the functions of the satellite signal demodulation, the local clock calibration, achieving NTP protocol and so on. It provides NTP timing service to other network equipment by means of 10/100M Base-T adaptive network ports. - Page 5 GlobalTime NTP Products User manual of GTT-030 Antenna installation should be lower than the lightning rod or other constructions that can attract thunderstroke and the installation location should better be 10-15 meters away from them. GPS antenna itself is rarely struck by thunderblot but is often damaged by the stong induced electric field resulted from the stuck buildings (the lightning rod, tower, etc) around.
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Page 6: Indoor Installation
GlobalTime NTP Products User manual of GTT-030 Table 2-1 Antenna Specifications Frequency range 1575±5MHz; RF connector N-type connectors × Right-hand Thread (M24 1.5) Polarization Installation circular polarization connection ≥3.5dB； φ96×126mm； Antenna gain Volume Operating ≥37dB； -45℃～85℃； Amplifier gain temperature Storage ≤1.5dB；... -
Page 7: Equipment Maintenance
The server is in the normal tracking state 3.2 Server configuration debugging GTT-030 network time server can conduct maintenance and management through the local serial cable connection or the remote telnet connection. The local connection needs to use a cross serial cable with connectors on both sides (that is, 2,3 feet of the two sides are cross connected). -
Page 8: User Login
GlobalTime NTP Products User manual of GTT-030 Figure 3-1 Terminal serial port Debugging settings 3.2.1 User Login After connecting the hyper terminal, press ENTER and you will see the login screen just like 0. Then enter the user name " ntpuser " and the password "Users.". -
Page 9: View The Network Status
DHCP network system, the recommended configuration is to assign a static IP address from the IP Pool of DHCP server to GTT-030. Other devices can use the static IP to access GTT-030. When it asks whether to use DHCP, If you select "N", it will prompt to enter the server IP address, subnet mask and gateway IP address. -
Page 10: Display The Status
+8). Entering "Q" will return to the main configuration screen while entering other keys will continue to the next step. When GTT-030 network time server work properly, the time level is 1, or else it is 16. -
Page 11: Exit
3.3 Remote dial-up maintenance We can use the MODEM to achieve remote dial-up maintenance with the serial monitoring port of GTT-030 network time server. In order to make it, please follow these steps: ² Initially, set the MODEM to auto answer mode and connect the MODEM and a computer serial port with a serial cable. -
Page 12: Client Configuration
User manual of GTT-030 ² Connect the MODEM and GTT-030 network time server monitoring port with a serial cable. Then plug the telephone line. Finally, dial this number through the Hyper Terminal of another computer with MODEM and it can be connected with the server. The configuration is as introduced in section 3.2. -
Page 13: Troubleshooting
GlobalTime NTP Products User manual of GTT-030 Fourthly, if you consider the synchronization cycle is too long, you can modify the registry to shorten the synchronization cycle. The specific registry key is in: \HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\TimeProviders\NtpClie nt\SpecialPollInterval The default is 604800 = 60 × 60 × 24 × 7, namely, a week. -
Page 14: Can Not Ping The Time Server After Configuration
After eliminating the above breakdown, if it still can not receive the satellite signal, please contact the service hot line of Shanghai GlobalTime Electronic Co., Ltd. Our engineers will help you with the further processing. -
Page 15: How To Configure The Network Equipment To Receive Time Service
GlobalTime NTP Products User manual of GTT-030 3.5.6 How to configure the network equipment to receive time service NTP protocol is an international standard protocol. The network equipment of many manufacturers can receive NTP protocol to adjust their own time. For example, the routers of Cisco, Avaya, Ascend and Huawei can all receive NTP services. -
Page 16: Chapter 4 Detailed Performance Index Of The Equipment
GlobalTime NTP Products User manual of GTT-030 Chapter 4 Detailed performance index of the equipment GPS receiver 12 channel GPS receiver L1-Band, C/A Code position hold-type Cold-start time: 200 seconds Warm-start time: 50 seconds Hot-start time: 25 seconds Positional Accuracy: 100 meters... -
Page 17: Appendix
User manual of GTT-030 Chapter 5 Appendix Shanghai GlobalTime Electronic Co., Ltd is a leading company that focuses on professional time synchronization products and services. We provides 7x24-hour hot line for technical support. If you have any questions about our products or the solutions, please not hesitate to contact us according to the following address: GlobalTime Electronic Co., LTD...
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