GlobalTime Electronic GTT-030, Manual, Page: 8 / 17

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Page: 8 / 17

GlobalTime Electronic GTT-030 Manual Download Page 8

GlobalTime NTP Products
User manual of GTT-030

8

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.".

Note: Pay attention to the last ".".

When you have login in, you can set your own password.

Login window

After logging in, there will be a interface, such as 0 configuration interface. There are totally 5 choices:

view the network status, change network setting, display the status, change the password and exit. The

detailed description of each function is introduced as follow.

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Summary of Contents for GTT-030

Page 1: ... 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 ...

Page 2: ... Different client programs support Windows 98 2000 NT XP Linux Unix FreeBSD and other operating systems to adapt to different applications l 10 100M BaseT adaptive network interface l Ways of maintenance the local maintenance serial port remote login remote dial up l 2 lamps display the device working status 1 2 Packaging Please check the shipping package which should contain the following items 1...

Page 3: ...r after an interval of time According to a certain filtering algorithm it can calculate the time deviation between the server and the client as well as the propagation delay caused by network transmission Then according to these two parameters to adjust the client s local time and make it consistent with the server Compared to other time calibration prorocols NTP protocol can eliminate the impact ...

Page 4: ...ervice to other network equipment by means of 10 100M Base T adaptive network ports The following are the detail installation description of the outdoor part and the interior part 2 2 Outdoor installation The outdoor part consists of the GPS satellite receiving antenna surge arresters transmission cables and antenna amplifier The installation attentions are as follows At first the antenna installa...

Page 5: ... test The high power microwave transmitting of the same band can not be around where the GPS antenna is installed In addition we should try to avoid the GPS antenna from the direct irradiation of high power electromagnetic radiation If the length of the feeder is less than 100 meters the antenna and equipment can be directly connected between 100 meters to 200 meters one more line amplifier is nee...

Page 6: ...ll turn green about 15 minutes later and the system starts to work normally To measure the BNC antenna socket with a mutimeter the feed voltage should be up to 5V Then connect the antenna cable with the antenna socket Next use a computer to pass through the IP address and network settings of the serial port configuration time server save and exit then restart GTT 030 Network time server to make th...

Page 7: ...figuration 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 The management is carried out on the super terminal The serial port configuration parameters of the...

Page 8: ...n enter the user name ntpuser and the password Users Note Pay attention to the last When you have login in you can set your own password Login window After logging in there will be a interface such as 0 configuration interface There are totally 5 choices view the network status change network setting display the status change the password and exit The detailed description of each function is intro...

Page 9: ...upply the network timing service to other devices As a result in 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 Finally it will prompt wh...

Page 10: ... the sky Note the time shown is UTC time which differs by 8 hours from China Standard Time China time zone is 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 Figure 3 3 Check the work status 3 2 5 Chage the password If type 4 in the main configurati...

Page 11: ...iguration is as the following interface The interface after connecting is the same as the HyperTerminal login SSH login configuration interface 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 Initially set the MODEM to auto answer mode and connect t...

Page 12: ... on the right side of the windows task bar and it will pop up an interface with date and time properties Then select the Internet time screen which is shown as the picture in the next page Secondly modify the windows default time server such as modifying to 192 168 2 8 Thirdly click Apply and then Update Now After a successful synchronization it will show successful synchronization time in year ho...

Page 13: ...00 98 operating system the time synchronization software provided by our firm or provided by the third party are both available The specific configuration can be referred to the respective user manual For UNIX systems in general there is ntpd daemon or xntpd daemon Create the ntp conf configuration file under the ETC directory and type server time server IP in it Then starting the daemon will do R...

Page 14: ...network connection You can see if the corresponding connection status light is normal by observing HUB or switch connected with the time server And then check if there is something wrong with the network settings You can use a crossing cable to connect the server to the computer directly to see if ping is ok Then use HUB to test in the same network segment Finally test the different segments Follo...

Page 15: ...isco Avaya Ascend and Huawei can all receive NTP services Some series switches also support the NTP protocol For instance the configuration command of Cisco router is ntp server IP address Regarding the specific configuration please refer to the manual provided by the manufacturers To unify the network time by NTP protocol can effectively improve the quality of network service It can also judge th...

Page 16: ...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 100 times per second Network protocol support ü RFC 1119 1305 NTP v2 v3 v4 ü RFC 1769 2030 SNTP v2 v3 v4 ü 10 100M Base T adaptive Ethernet ü SSH ü FTP ü DHCP Power supply and the environment l Power supply 15W 220 240V AC or 48V...

Page 17: ...ervices 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 Add A2 1 No 399 Dakang Road Daliu Industrial Building Shanghai China Zip Code 200443 Tel 86 21 36531186 Fax 86 21 36531185 Mail contact ntpclock com Website www ntpclock com ...

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