For the very first time of installation the NTS–xxxx has to be configured by resetting to defaults values:

LAN1 (default): 192.168.000.210/255.255.255.0

LAN2 (default): 010.000.000.210/255.255.255.0

Remark ! Please press and hold simultaneously “OK” and “C” buttons on front panel keyboard.

he current valid settings will be displayed on front panel LCD.

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-xxxx” section using device built-in keyboard. You can simply choose the same prefix as NTS–xxxx. IP number and choose other suffix digit. The MASK should be set to the same value as in NTS–xxxx.

Please use your favorite TELNET or SSH client to connect to the unit using default values. Once terminal is connected the setup appears automatically. You can also use your favorite web browser to set up NTS via WWW interface (try on-line demo). If you have decided to use old RS232 interface please set it to 9600,8,1,n first, however Elproma advice LAN interface for all configuration steps of NTS-xxxx.

To start configuration you should first configure all LAN interfaces by simply placing IP, MASK, DEFAULT GETEWAY for each Ethernet card (LAN1, LAN2). In addition you can specify what mode you want to work NTSxxxx 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. Therefore please leave those options for the moment now by simply filling fields 0.

You can decide what other remote services you like to keep active for future accessing of NTS–xxxx. You access each LAN separately:

•Enable/Disable access via Telnet

•Enable/Disable access via SSH

•Enable/Disable access via HTTP

•Enable/Disable access via HTTPS

•Enable/Disable access via SNMP (MIB2)

Please wait 5 sec. Screens changes automatically

All above steps you should now repeat for LAN2. You can also try this on real-time HTML setup of NTS-xxxx

Actually this is everything you need to start working with NTS-xxxx. Once LAN1/LAN2 are set you can start using your time server NTS-xxxx.

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–xxxx like e.g. losing GPS antenna etc. Also you can trace all TCP/IP statistics using your favorite SNMP client software.

You can also try this on real-time HTML setup too

Another step is you can define up to 3 NTP backup servers for single NTS–xxxx unit. In this mode NTS–xxxx reminds Stratum 1 as long as GPS antenna works fine or any other time source (e.g. PPS_IN, OCXO*, RUBIDIUM* - depends on model type). But in case of missing accurate time source NTS–xxxx checks backup servers list. If NTP accepts any of them the NTS–xxxx reduce its stratum to N-1 (where N is a Stratum of approved server taken out of backup list). We advice to specify only Stratum 1 servers on NTS–xxxx backup list. This does not let reduce NTS–xxxx Stratum below 2.

The backup NTP servers should be configured for authorized NTP transmission. For this reason there is another field key pointing position in encryption list with MD5 keys. But in this step we still advice to continuous Setup without encrypted associations. Safety and protection will be discussed shortly in this manual.

You can also try this on real-time HTML setup too

NTS–xxxx 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 internal OCXO*, RUBIDIUM* (when previously synchronized) or RTC time source. 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 (IRIG-B or DCF) signal is starting to be receive that automatic RTC and OCXO*, RUBIDIUM* synchronization is proceeded. Therefore we advice to don't use facility if you do not plane to run NTS–xxxx with no antennas.

You can also try this on real-time HTML setup too

You can also try this on real-time HTML setup too

Changing password allows you to protect against unauthorized remote access to NTS–xxxx. We advise to use min. 8 character passwords.

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. You can check receiver location and GPS status bits.

ANT A/B DIR. This functions give you ability to send time signal in NMEA/PPS format to another NTS series unit. Just configure one antenna socket as an output (O) and connect it with 1 to 1 twisted pair cable with RJ-45 TIA-568B connectors to antenna input (I) of second NTS.

You can also try this on real-time HTML setup too

Once setup is done you have to exit with save option. Do not turn off power when NTS is saving settings (appropriate message appear on LCD).

The NTS–xxxx supports SETUP available via SSH and TELNET service or serial console port located on front panel (DTE configuration, 9600 baud, 8 data bits, no parity, 1 stop bit).

You can also use SNMP service to indicate system failures