NTS-4000 OCXO
Software Timestamps
NTP, PTPv2/IEEE1588, IRIG-B AM, PPS/10MHz
NTS-4000 delivers time directly to LAN network using NTP PTPv2 IEEE1588 protocols. Built-in OCXO oscillator guarantees precision time for limited period of missing satellite signals. It is equipped with 2 independent Ethernet 10/100Mbps. The GNSS is a standard UTC reference time. Server is equipped with 2 independent GNSS receiver RJ45 inputs ANT1 & ANT2, therefore it can support redundant satellite receivers too. Both ANT1/ANT2 interfaces can be switched to output mode emulating GNSS signals in NMEA std. Server can be synchronized to external clocks using PPS or IRIG inputs. It simultaneously provides output time using PPS, IRIG, RS232, 10MHz std.
NTS-4000 is STRATUM-1, PTP/IEEE1588 GRANDMASTER supporting software stamps. It offers accuracy of µs on LAN. Server supports leap second, synchronizes UTC time monotonously (jump-free) and can simultaneously serve up to 100,000 NTP clients.
Firmware basis on FreeBSD UNIX. It includes best stable IP stack. Unit has natural air cooling system without fans. This fact makes unit long life. Server uptime is counted in years of continuous working 24/7. It is manufactured since 2007 and it is regularly hardware & software updated to keep state of the art functionality and cyber-security.
NTS-4000
NTS-4000 back
technical specification
| model NTS-4000 | Network Time Server (1U) | accuracy LAN | better than 10us |
| GNSS NTS-antenna | active GNSS receiver | accuracy VLAN | better than 100us |
| holdover OCXO | yes | accuracy INTERNET | better than 10ms |
| low-noise NTP TCXO | extra feature* | interface GNSS | 2x (RJ45 rs485) w/PPS |
| sync PROTOCOL | NTP, PTP IEEE1588, IRIG | std. SUPPORT | GPS, GLONASS |
| NTP | RFC5905,RFC1305, RFC5906 , RFC5907,RFC5908,RFC5909 | extra SUPPORT | GALILLEO, BEIDOU |
| SNTP | RFC4330, RFC2030, RFC1769 | #SBAS | yes (EGNOS,WAAS ) |
| PTP | IEEE1588:2008(software) | #1FREQ | 1575.42MHz (L1 GPS) |
| IRIG-B IN & OUT | AM (BNC 50 Ohm) Digital (rs232) | #2FREQ | 1598.06-1605.38MHz |
| freqency INPUT | 1PPS (BNC 50 Ohm) | #CHANNELS | 32-170 |
| OUTPUT | 1PPS, 10MHz (BNC 50 Ohm) | max DISTANCE | 0.7km[2300ft] UTP cat5 |
| TIME/DAYTIME | RFC(867-8)extra feature* | max DISTANCE | 1.4km[4500ft] STP cat5 |
| #LAN | 2x | interface rs232 | 2x (D-SUB9) |
| speed LAN | 100/10Mbps (RJ45) | interface USB 2.0 | 2x (firmware support) |
| performance LAN | 1mln req/minute | size RACK"19 | 1U (484x300x44,4mm) |
| TCP/IP | IPv4, IPv6, TCP, UDP | weight NETTO | 5kG (6kG BRUTTO) |
| MANAGEMENT | HTTP, HTTPS, SSH, TELNET SNMP v2 V3, RADIUS | box SIZE | 520x380x250 |
| SECURITY | Autokey, DSA, SSL, MD5, RSA | operating TEMP | 0C+50C |
| SYSLOG | yes | storage TEMP | -40C+85C |
| accuracy GNSS | better than 15ns | %HUMIDITY | up to 95% |
| std. POWER | IEC/EN 60320-1 110-230VAC max.55W |
