The NTS–x0000 Time Server BOX includes:
NTS-3000 (1U) RTC quartz clock NTS-4000 (1U) OCXO oscillator NTS-5000 (2U) OCXO+RUBIDIUM dual system oscillators ![]()
Extra options /if ordered separately/:
View of Front Panel (NTS-3000 & NTS-4000)
All NTS-x000 front panels are similar organized. The 2x20 characters LCD display shows: GPS (SAT) status, local or UTC time stamp information, GPS antenna position and various of system parameters lincluding internal temperature etc. The device comes with 6-key keyboard for: quick IP device configuration, firmware rev. info, factory default restoring etc. The RS232 and 2x USB are preserved for firmware upgrade/downgrade and future functionality/service purposes. LAN2 connector contains 2 led: green - indicates cable connection, yellow - flashes while data is being transmitted. Each plugging/unplugging of Ethernet cable will be indicated on LCD display by reviewing TCP/IP configuration for specific LAN interface.
View of Back Panel (NTS-3000 )
View of Back Panel (NTS-4000)
On the back panel there is a power connection 110/230V AC (50Hz), LAN1, 2xGPS antenna connectors (A/B)
Leds are OFF. No time synchronization when both Red & Green LEDs are OFF
Green colour LED: ON - external time pattern sync (3x NTP servers, IRIG-B, IBM Sysplex) BLINK - 1PPS time sync (internal build-in oscillator or external 1PPS input)
- RTC real time quartz clock
- high precision OCXO oscillator
- high precision OCXO oscillator #1 (before Rubidium is PLL/FLL locked) - atomic RUBIDIUM super precision oscillator #2 (after Rubidium is locked)
NTS-7000 (not available) - active Hydrogen Masser
- cesium beam /atomic clock/
NTS-dialup (not available, dial-up option transferred to NTP-3000, 4000, 5000) - can be
assembled with RTC, TCXO or OCXO oscillator
Red colour LED: ON - GPS NMEA time sync BLINK - 1PPS (GPS) time sync
Each antenna Channel (A/B) can operate as INPUT or OUTPUT (GPS NMEA mode). Antenna input mode can support simultaneously SAT + RF AM /e.g. GPS + DCF77*/ receivers. Antenna OUTPUT mode supports only GPS (NMEA) emulation and 1PPS support. Elproma offers additional hardware for NTP time servers. New generation time reference pattern can be simultaneously drown from GPS L1/L2, SBAS, EGNOS, WAAS, GLONASS, and tomorrow from GELILEO too. Select chapter: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11
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