Related Manuals for Elproma NTS-3000
Summary of Contents for Elproma NTS-3000
- Page 1 ELPROMA Electronics Network Time Service USER MANUAL GPS Network Time Server NTS–3000 ELPROMA last update January 22, 2008 01/22/2008 Page 1/41...
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Page 2: Table Of Contents
• List of figures Figure 1: NTS-3000 Network Time Server..................5 Figure 2: Front panel of NTS–3000....................6 Figure 3: Back panel of NTS-3000.....................6 Figure 4: GPS world wide time propagation..................9 Figure 5: GPS antenna installation.....................9 Figure 6: NTS–3000 GPS antenna box.............. - Page 3 Figure 30: File ntp.conf........................45 SAFETY INSTRUCTIONS ! This are the important Safety Instructions that should be followed during installation and maintenance of the Elproma NTS-3000 time servers product. IMPORTANT NOTE ! This equipment contains hazardous voltages. Do not handle any metallic part until the power has been disconnected.
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Page 4: Introduction
NTS-3000 is designed to operate without ventilators and fans. Metal housing is an important part of NTS–3000 natural cooling system designed in such way that unit can be located in the neighbourhood of any device working inside rack19 mount frame. -
Page 5: Hardware
Each plugging/unplugging of Ethernet cable will be indicated on LCD display by reviewing TCP/IP configuration for specific LAN interface. Figure 3: Back panel of NTS-3000 On the back panel there is a power connection 110/230V AC (50-60Hz), LAN1, 2xGPS antenna connectors (A/B) and 1PPS input interface. - Page 6 New generation time reference pattern can be simultaneously drown from GPS L1/L2, SBAS, EGNOS, WAAS, GLONASS, and tomorrow from GELILEO too. There are 2 LED (red, green) on the back panel of NTS-3000 to indicate GPS, OCXO 1PPS synchronization. The following unit status is reported on LED's:...
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Page 7: Mounting Gps Antenna
ELPROMA Electronics Network Time Service 3.Mounting GPS antenna The GPS satellite time receiver has been designed to provide extremely precise time. High precision available 24 hours a day around the whole world. The Global Positioning System (GPS) is a satellite-based radio-positioning, navigation, and time-transfer system. The source of time is based on cesium atomic clocks. - Page 8 The construction of NTS-protect is based upon the rule of voltage compensation in accordance with PN – IEC 61024-1 standard regulations. It stimulates upholding safe levels of over voltage that will not damage the insulation in all protected electrical circuits of the NTS-3000 server. *** NTS-protect is available as separate product.
- Page 9 CAT5 cables (for external environment. use) with standard RJ-45 connector termination (both sides) with standard T568B conductors assignment. Cable should be leaded into antenna box through cable gland. Please use standard Ethernet cramping tooling (not included to NTS-3000 set) to mount antenna cable connection.
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Page 10: Powering Up Nts-3000
When antenna has clear view of the sky it takes up to 30 minutes until the new almanac is completed and the system starts to operate. For this time NTS-3000 will operate from it's internal quartz time clocks. -
Page 11: Basic Device Configuration
[OK]-Yes [Cancel]-No Configuration confirmation screen In order to save configuration press “OK” button. NTS-3000 will reboot and operate with new setting. If you want to keep old configuration simply press “C” button and no changes will be made. In order to exit from configuration mode just press “OK” button as many times as needed to obtain confirmation screen and then press “C”... -
Page 12: Error Messages
ELPROMA Electronics Network Time Service 6.Error messages If no antennas are currently connected to NTS-3000 device following error screen will be shown: 17-02-2006 Err sats 18:02:21 ANT ERROR Error: all antennas disconnected The NTS–3000 requires minimum 4 satellites to be reached continuously in order to get time from GPS properly. -
Page 13: Ntp - Network Time Protocol
ELPROMA Electronics Network Time Service 7.NTP – Network Time Protocol NTP is a common method for time synchronization over networks. The NTP is much different from any of known other communication protocols. It is because NTP does not base on the principles of synchronizing machines to each other. -
Page 14: Figure 10: Strata Tree
15. NTP uses the UDP protocol on port 123 to communicate between clients and servers. Attempts are performed at designated intervals until the server responds. All NTS-3000 antennas works redundantly and they are NTP visible as Stratum 0. -
Page 15: Figure 11: Example Of Ntp Stratum Configuration In Local Lan Peer
ELPROMA Electronics Network Time Service 2 packets per transaction. When synchronization starts, transactions occur about once per minute, increasing gradually to once per 17 minutes under normal conditions. Poorly synchronized clients will tend to poll more often than those well synchronized clients. Starting from NTP version 4 implementations, the minimum and maximum intervals can be extended beyond these limits, if necessary. -
Page 16: Ntp On Time Failure Tolerance Network
NTP servers available publicly on line in Internet (Public NTP Servers). NTS-3000 time server can be used as a support for another NTS-3000 server, delivering time into a secured LAN isolated from the Internet. This solution requires 2x NTS-3000 servers working together. -
Page 17: Nts-3000 Software Setup
You will have to configure one of your local computer (in example laptop) to IP number and MASK which is suitable to connect to the unit or setup basic IP configuration as described in “Powering NTS-3000” section using device built-in keyboard. You can simply choose the same prefix as NTS–3000. -
Page 18: Figure 12: Main Menu
ELPROMA Electronics Network Time Service Figure 12: Main menu 01/22/2008 Page 18/41... -
Page 19: Figure 13: Entering Ip Address
ELPROMA Electronics Network Time Service To start configuration you should first configure all LAN interfaces by simply placing IP, MASK, DEFAULT GETEWAY for each Ethernet card (LAN1, LAN2). Figure 13: Entering IP address Figure 14: Entering MASK address 01/22/2008 Page 19/41... -
Page 20: Figure 15: Entering Default Gateway Address
ELPROMA Electronics Network Time Service Figure 15: Entering DEFAULT GATEWAY address Figure 16: Entering IPv6 address In addition you can specify what mode you want to work NTS–3000 on specific LAN interface. You can enable extra broadcast and multicast modes running in the background of standard client/server mode, but we suggest to finish basic configuration first before you go to more advanced options. -
Page 21: Figure 17: Enabling/Disabling Remote Access To Nts-3000
ELPROMA Electronics Network Time Service Enable/Disable access via HTTP • Enable/Disable access via HTTPS • Enable/Disable access via SNMP (MIB2) • Figure 17: Enabling/Disabling remote access to NTS–3000 01/22/2008 Page 21/41... -
Page 22: Figure 18: Enabling Syslog
ELPROMA Electronics Network Time Service Now you should repeat listed above steps for LAN2. You can also specify SYSLOG server for future tracing functionality. You can configure facility and verbosity of NTS–3000 messages, to ease log segregation on your syslog server. Please read your syslog documentation – syslog(8) –... -
Page 23: Figure 19: Enabling Snmp Mibv2 Service
ELPROMA Electronics Network Time Service If your network support SNMP, you can configure special MIB2 traps to implement exceptional facts you can be interesting in. It is very easy to set traps on such way that you will be informed by mail or mobile phone (SMS) on any unexpected situation may occur inside NTS–3000 like e.g. -
Page 24: Figure 20: Defining List Of Ntp Backup Servers (Stratum 1)
ELPROMA Electronics Network Time Service Another step is you can define up to 3 NTP backup servers for single NTS–3000 unit. In this mode NTS–3000 reminds Stratum 1 as long as GPS antenna works fine or any other time source (PPS_IN, OCXO). But in case of missing accurate time source NTS–3000 checks backup servers list. -
Page 25: Figure 21: Setting Rtc Date
ELPROMA Electronics Network Time Service NTS–3000 can work with no GPS, PPS_IN nor IRIG-B source of time. It can even operate with no backup NTP servers, just based on RTC time source. Figure 21: Setting RTC date For that reason you need to be able to set up manually UTC date and time. However you don't have to do it because once GPS (or DCF) signal is starting to be receive that automatic RTC synchronization is proceed. -
Page 26: Figure 22: Setting Rtc Time
ELPROMA Electronics Network Time Service Figure 22: Setting RTC time NTS–3000 is ready to work in NTP authentication modes. This is valid for all modes of synchronization including: broadcast, • multicast, • client/server • and NTP backup communication. This screen helps you generate SSL and SSH keys. You can also edit MD5 keys, but generation is not supported by NTS–3000. -
Page 27: Figure 23: Authentication Utilities
ELPROMA Electronics Network Time Service Figure 23: Authentication utilities Changing password allows you to protect against unauthorized remote access to NTS– 3000. We advise to use min. 8 character passwords. 01/22/2008 Page 27/41... -
Page 28: Figure 24: Other Functions
ELPROMA Electronics Network Time Service Figure 24: Other functions Upgrade. To perform firmware upgrade you should put USB memory stick with new firmware into port on front panel and then activate this option. GPS. With this function you can monitor GPS receiver messages on line, just as they came. - Page 29 ELPROMA Electronics Network Time Service Important Note! Before connecting antenna sockets by twisted pair cable BE ABSOLUTELY SURE that both units are properly grounded to well connected common (PE) and there is no difference in potential between ground contacts in power sockets. Consult local specialist if needed.
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Page 30: Security And Ntp Authentication Mode
ELPROMA Electronics Network Time Service 10.Security and NTP authentication mode The notion of accurate time is essential to determining the order in which events occur. This is a fundamental aspect of transactional integrity, system and network-wide logging and auditing, and troubleshooting and forensics. Having an accurate time source plays a critical role in tracing and debugging problems that occur on different platforms across a network. -
Page 31: Figure 26: Md5 Keyid For Broadcast Mode
ELPROMA Electronics Network Time Service restriction in NTS–3000 access control list. You have to put the same keys at the same positions to file (/etc/ntp.keys) on client side. Please make sure that key file is not world readable -- it should be owned by root (on UNIX platforms), and be chmoded to 0600. -
Page 32: Ntpq Client Diagnostic Utility
ELPROMA Electronics Network Time Service 11.NTPq client diagnostic utility Any NTP implementation supports special diagnostic client ntpq. The command ntpq requests the actual status of NTS – 3000. An command interpreter appears. Type "?" for a list of all available commands. - Page 33 ELPROMA Electronics Network Time Service jitter variance of the offsets in milliseconds, • where: "*" indicates stabilized source of time, • ''o'' indicates stabilized PPS like source of time, • "+" points best candidate to become a new stable source of time.
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Page 34: Installing Ntp Client Software
ELPROMA Electronics Network Time Service 12.Installing NTP client software NTP became to be a world wide standard in network time synchronization. Almost every existing operating system has its own implementation of NTP including Microsoft Windows and Cisco products. Many systems includes NTP clients to standard distribution. This is true for more of Unix familiar operating systems like: Linux or FreeBSD. -
Page 35: Windows 95/98/Me (Sntp Client)
Network Time Service 12.1.Windows 95/98/Me (SNTP client) Simply copy all CD:\Win9598Me directory to your hard disk. Add your local NTS-3000 IP address to list of available timeservers by selecting Add button. You should select SMTP protocol to be active. We also advice to keep adjustment once per minute with maximum time corrections as possible. -
Page 36: Windows Nt/2K/Xp/2003/Vista (Ntp Client)
NTP demon for Unix. We advice to use this utility for NT/2000/XP servers and workstations. NT/2000/XP ntp.conf file driftfile %windir%\ntp.drift # path for drift file server 127.127.1.0 # local clock server 10.0.0.210 # NTS-3000 IP address Figure 30: File ntp.conf 01/22/2008 Page 36/41... -
Page 37: Unix Family Systems
First a file named /etc/ntp.conf has to be generated with an editor. Adapting the file to NTS – 3000 it should contain the following config: # Example for /etc/ntp.conf for NTS-3000 server 127.127.1.0 # local clock server xxx.xxx.xxx.xxx... - Page 38 ELPROMA Electronics Network Time Service in a log file by using the following option: # ntpd -llogfile 01/22/2008 Page 38/41...
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Page 39: Technical Specification
ELPROMA Electronics Network Time Service 13.Technical specification: The NTS – 3000 is high quality professional time server for computing, telecom, military and other science purposes. It has been manufactured with no mechanical parts as coolers or hard disk. All cooling system has been resolved on natural air circulation outgoing via metal case of unit. -
Page 40: Case
ELPROMA Electronics Network Time Service 13.3.CASE HAUSING Metal desktop case, 1U; Front panel: 43x483mm rating IP20 PROTECTION DIMENSIONS 483x43x286 mm 2 x 20 characters 13.4.GPS CHIPSET Trimble Resolution-T receiver, 12 channels 20V to 3.3V converter, overvoltage protection, IP67 case, ANTENNA RECEIVER input frequency 1575.42MHz (L1) - Page 41 "Part Stress Analysis" method. This resulted in a theoretical predicted MTBF of 284608 hours. After the NTS-3000 has been in the market for over a year and a half, we can say that the real MTBF is proving to be much better –...
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