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GlobalTime NTP Products

Chapter 4

Detailed performance index of the equipment

GPS receiver

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12 channel GPS receiver

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L1-Band, C/A Code

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position hold-type

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Cold-start time: 200 seconds

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Warm-start time: 50 seconds

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Hot-start time: 25 seconds

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Positional Accuracy: 100 meters

Timing performance

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Server Time Level: Stratum 1

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Server time precision: 1ms

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Precision of client time: 10ms

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Timing capacity: >1000 times per second

Network protocol support

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RFC 1119/1305 NTP v2/v3/v4

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RFC 1769/2030 SNTP v2/v3/v4

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SNMPv1/v2/v3/v4

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TIME/DAYTIME

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TELNET

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SSH

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FTP

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DHCP

Power supply and the environment:

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Power supply: 15W, 176 ~ 264V AC(or -48VDC)

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Environment:

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Temperature: 0 ~ 50

℃

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Relative humidity: 0

～

90%RH(non-condensing)

Содержание GTT-100

Страница 1: ...GlobalTime NTP Products 1 Tel 86 21 36531186 Fax 86 21 36531185 Web www ntpclock com Email contact ntpclock com Add A2 1 No 399 Dakang Road Baoshan District Shanghai China Zip code 200443...

Страница 2: ...SNMP setting 15 3 4 5 Heartbeat check optional function 15 3 4 6 NTP status 16 3 4 7 GPS status 16 3 4 8 System function 16 3 4 9 Change the password 17 3 4 10 Exit 17 3 5 Time server login through th...

Страница 3: ...ble time source GTT 100 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 T...

Страница 4: ...ition holding mode which greatly improves the functionality of the system OCXO is built in to guarantee the accuracy of time keeping Support SNMP with the serial port to enter 6 lamps display the devi...

Страница 5: ...rver GTT 100 network time server use the professional GPS timing receiver It can receive and lock the satellite signal fast and reliably NTP protocol Network Time Protocol is a common international ne...

Страница 6: ...indicate the two way power supply Four indicator lights to indicate the service status of GPS and NTP The back panel Two power sockets with fuse After opening the fuse base there are a primary and a...

Страница 7: ...tdoor installation The outdoor part is composed of the GPS satellite receiving antenna transmission cables and antenna amplifier The installation attentions are as follows At first the antenna install...

Страница 8: ...no corner In this way it can receive at least half of the satellite signal But as a long term using equipment it is recommended that the antenna is installed in high places while the outside installa...

Страница 9: ...g 220V AC to the master device the indicator light Power on the front panel will light which indicates the running of power supply is normal To measure the BNC antenna socket with a multimeter the fee...

Страница 10: ...satellite signal is received OCXO off No OCXO or not use OCXO for time keeping green Use OCXO to for time keeping M S off Hot standby status green The host status 3 2 The keyboard display VFD display...

Страница 11: ...menu The third level menu Network Information Eth0 Network port 0 IP IP address MSK Subnet mask GW Gateway GPS Information Lat Latitude Lon Longitude Ht Height Sat Number of satellites NTP Informatio...

Страница 12: ...al 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 manag...

Страница 13: ...DHCP network system the recommended configuration is to assign a static IP address from the IP Pool of DHCP server to GTT 100 Other devices can use the static IP to access GTT 100 When it asks whethe...

Страница 14: ...he levle of local time server will be reduced to 2 NTPbroadcast is the broadcast mode of lower timing accuracy but larger system capacity which can reduce the network data flow MD5 key is the encrypte...

Страница 15: ...machine is the host After restarting the host it will remain to be the host 2 In the case that both the host and the backup machine have been started if the host is cut off the power supply unexpected...

Страница 16: ...t the target IP address and then press Enter by pressing Ctrl c to return to the previous sub menu while Q to return to the previous menu 2 Time Mon jul 30 19 16 31 CST 2007 Display the current system...

Страница 17: ...it will return to the user login screen 3 5 Time server login through the network For the sake of the system security the time server supports login by SSH The login configuration is as the following...

Страница 18: ...GlobalTime NTP Products 18 3 5 1 Local time zone display Our new version allows users to configure time display on the front panel in different time zones...

Страница 19: ...W0 at Y0 Note The commands are case sensitive Then connect the MODEM and GTT 100 network time server monitoring port with a serial cable Then plug the telephone line Finally dial this number through t...

Страница 20: ...s 2 NTP settings 3 SNMP settings 4 Hot Standby 5 NTP status 6 GPS status 3 7 2 Network settings Click Network settings in the navigation bar it will enter the network configuration item in the navigat...

Страница 21: ...in Figure 1 3 1 Then assign the appropriate IP subnet mask and gateway Finally click Submit to save the settings If there is no need for fixed IP the network card will get IP through DHCP Then you on...

Страница 22: ...number in the ID box values range from 1 to 65535 and can not be repeated The key value consists of the 8 bit characters and no punctuation is allowed The fixed format ID M xxxxxxxx After entering the...

Страница 23: ...TITUDE LONGTITUDE and SATELLITE UMBER Note The items above require filling in the right IP otherwise it will result in the checkout failure and will not be saved If you enter the IP address and can no...

Страница 24: ...te Windows default is to synchronize once a week If the screen displays RPC not available you should open the Control Panel select Administrative Tools Services search windows Time from the services l...

Страница 25: ...to unplug it and check whether the fuse is intact 3 9 2 Receiving no satellite signals for a long time Emphasis should be placed on verifying whether the feeder system is normal Firstly unplug the fee...

Страница 26: ...the satellite receiver antenna If this trouble occurs frequently you should consider to select another site to install the antenna that is a place free of anything overshadowed and the surrounding mic...

Страница 27: ...itional Accuracy 100 meters Timing performance Server Time Level Stratum 1 Server time precision 1ms Precision of client time 10ms Timing capacity 1000 times per second Network protocol support RFC 11...

Страница 28: ...d services We have our own intellectual property rights We provide 7x24 hour hot line for technical support If you have any inquiry about our products or the solutions please feel free to contact us Z...

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