Time Server

NTS-3000, NTS-4000, NTS-5000, NTS-dialup

User Manual

 

Select chapter: 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 12.1, 12.2, 12.3

 

Page 1/12

 

 

1. Introduction

 

 

Before you start reading manual !

This manual is dedicated for all Time Servers manufactured by Elproma including:     

NTS-3000, NTS-4000, NTS-5000, NTS-7000, NTS-9000 and NTS-dialup

called later shrtly "NTS-xxxx". Some model related differences are clearly highlighted.

 

The NTS Network Time Server NTS-xxxx provides a high precision time directly to TCP/IP networks using NTP (Network Time Protocol RFC 1305) and SNTP (Simple Network Time Protocol RFC 2030). It synchronizes time of any NTP or SNTP clients running on remote PC’s. It supports majority of current popular operating systems including: Microsoft Windows, Mac OS/X, Linux, Free BSD, HP-UX, IBM AIX, IBM AS/400, SUN Solaris and many other UNIX family systems. It can synchronize simultaneously over 10,000 servers, workstations, routers and other devices supporting NTP or SNTP clients. NTS-xxxx provides accurate time via 2xLAN (10/100Mbps Ethernet) as well as via various of I/O sync standards including: IRIG-B*, 1PPS.

 

The accurate UTC time is powered by numerous time sources including: double (A/B) redundant antenna system (each supports GPS and/or 2nd extra pattern including: DCF77, or GLONASS, SBAS, EGNOS, WAAS, or even the  GALILEO in a near future) external 1PPS input or external IRIG-B*. Unit includes internal:

 

* NTS-3000

       -  RTC  real time quartz clock /NTS-3000/ 

       -  precision TCXO oscillator (TCXO version only)

 

* NTS-4000

       - high precision OCXO oscillator

 

* NTS-5000

       - high precision OCXO oscillator #1

       - atomic RUBIDIUM super precision oscillator #2

 

* NTS-7000

      - active Hydrogen Masser

 

* NTS-9000

      - cesium beam /atomic clock/

 

* NTS-dialup cen be assembled with RTC, TCXO or OCXO oscillator

for time backup in case of GPS receiving problems or failure. Special DCF77*  RF-AM* time pattern support is available for Central Europe and Germany.

NTS–xxxx distributes UTC reference time to 2 isolated (not routed) sub-networks: LAN1, LAN2. All time and satellite informations can be traced on front panel 2x20 LCD display. More detailed statistic is available by remote NTP software utilities (”ntpq”, ”ntpdc”), setup utility or other software interfaces like: WWW, TELNET, SSH, SNMP. NTS–xxxx can operate in standard or special NTP authentication mode protected by MD5 algorithms. Unit supports broadcast, manycast, multicast and client/server NTP modes.

Special fast sync startup mode of NTP has been implemented to reduce unsynchronized time after powering up products which has no battery powered up RTC clocks.

NTS–xxxx is ready to work with any SYSLOG or SNMP (MIB2) server. It let friendly warn on any unexpected situation that may happen in your time synchronized network.

NTS-xxxx is designed to operate without ventilators and fans. Metal housing is an important part of NTS–xxxx natural cooling system designed in such way that unit can be located in the neighborhood of any device working inside rack19 mount frame.

A true novelty is an option to create cascade NTS servers where one can simulate an antenna for the other. This functionality enables time synchronization of secured LANs with official time from NTP servers available publicly on line in Internet.

* - special feature option (required to be purchased separately)

 

 

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