Features and Highlights
- GPS / GNSS / Galileo / NavIC Input (TNC)
- External Inputs: 1PPS (SMA), NTP (RJ45)
- Functions as a Primary NTP Server
- Support Anti-jamming and Anti-spoofing
- Automatic failover to function as a secondary NTP Server, in the absence of GNSS Signal
- NTP Server supports IP20 ingress protection
- High bandwidth NTP performance
- Upto 7,500 NTP requests per second
- 40,000 NTP Slaves supported
- 250,000 SNTP Slaves supported
- ITU-T G.811 / Stratum 1 compliant (PR) Primary Reference when locked to GPS / GNSS / NavIC
- ITU-T G.812 compliant holdover (OCXO)
- Maintains Stratum-1 NTP output during holdover
- Synchronization of NTP / SNTP clients
- Supports Unicast, Multicast, Broadcast
- NTP Peering (1+1 redundant NTP Server)
- Leap Second correction Support
- MD5 / SHA1 authentication for NTP clients
- 1 x IRIG-B Un-Modulated DCLS (BNC)
- 1 x IRIG-B Modulated AM (Rj45)
- Meets and comply with Power Contact and Lightening Protection as per EN61000-4-5 Level 3 specifications.
- Alert notifications via SNMP Traps, SNMPv2, SNMPv3, SMTP (Email)
- Concurrent IPv6 and IPv4 operation
- Supported network protocols: IPv4, IPv6, SSH, TELNET, FTP, SYSLOG, SCP, SFTP, TCP, UDP and DHCP
- Field firmware updates supported (local and remote)
- Secure network management: enable or disable options
| Inputs: |
GPS/ GNSS/ NavIC, 1PPS and NTP* |
| Outputs: |
NTP, 2.048MHz, 2.048MBits, 10MHz, 1PPM / 1PPH, 1PPS, 1PPS Adj. (1μs – 200ms), ToD NMEA 0183, IRIG-B (Unmodulated and Modulated) |
| Power Supply: |
24V DC, 48V DC, 110-220V DC, 110-240V AC, 1+1 Redundant PSU |
| Service Capacity:: |
Suitable for servicing up to 7,500 NTP / SNTP requests per second. |
Security Features and capabilities:
- MD5 / SHA1 authentication for secured NTP access
- Key management for NTP clients
- Option to disable clear text (Telnet) for secure communication
- Supports Secure Shell (SSH) network protocol for encrypted communication
- Supports RADIUS server for secure authentication and access control
- Supports user-configurable Ethernet port protection
- Supports NTP Peering for creating a redundant NTP server
- Encrypted Password Control to access the device
- Password Strength Monitoring
- Alert notifications using secure SNMPv3 traps
Holdover (G.812) Synchronization:
- OCXO (Double Oven-Controlled Crystal Oscillator)
- OCXO Stability: ± 3ppb
- Accuracy
- One day Aging is ± 0.4ppb
- 20Year Aging is ± 80ppb
GPS/GNSS Receiver Specifications:
- 50 Channel GPS Receiver
- 62 Channel GNSS Receiver
- Supports Propagation delay compensation
- GPS, GNSS, Galileo L1 (1575.42 MHz) frequency, C/A Code Receiver
- GPS, Galileo-E5a, NavIC L5 (1176.45 MHz) frequency, C/ACode Receiver
- Tracks up to 32 satellites with Multiple Constellation.
- Synchronizing Time:
- Acquisition time - Hot Start: 1 sec.
- Acquisition time - Warm Start: 28 sec.
- Acquisition time - Cold Start: 28 sec.
- GPS / GNSS / NavIC Signal
- Tracking and Navigation: -165dBm
- Reacquisition -160dBm
- Cold Start -148dBm
- Antenna Connector:TNC
- Re-synchronization Delay - less than 1 minute
- Accuracy of re-synchronization - less than 100ns
- Accuracy Of Time-Pulse Signal referenced to GPS: ± 30ns (raw)
- Accuracy Of Time-Pulse Signal referenced to GNSS: ± 20ns (raw)
- Accuracy Of Time-Pulse Signal referenced to GPS/GNSS: ± 15ns (compensated)
(Note: with all satellites in viewat -130db)
Synchronization Inputs:
- 1 x GPS / GNSS / NavIC (TNC)
- 1x 1PPS (SMA)
- NTP Time Source (RJ45)
NTP Outputs:
- 4 x 10/100Mbps NTP / SNTP Interfaces
- 1 x 10/100Mbps user configurable NTP / SNTP interface
Frequency and Time Outputs:
- 1 x 2.048 MHz, 75 Ohms, phase-locked to GPS / GNSS / NavIC (BNC). ITU-T G.811 compliant.
- 1 x 2.048 MBits (ITU-T G.811 Compliant E1 Bits Clk), RJ45
- 1 x 10MHz, 50 Ohms, phase-locked to GPS / GNSS / NavIC (BNC). ITU-T G.811 compliant.
- 1 x 1PPS, phase-locked to UTC (BNC)
- 1 x 1PPS Adjustable Pulse-Width (1µs – 200ms) phase-locked to UTC (BNC)
- 1 x ToD (Time-Of-Day) output compliant to NMEA 0183 - RS232C (DB-9)
- 1 x IRIG-B Un-Modulated DCLS (BNC-50 Ohms)
(B000, B002, B003, B004)
- 1 x IRIG-B Modulated AM (RJ45) (B120, B122, B123, B124)
- 1 x 1 PPM / 1 PPH (BNC) - Programmable
- 1 x Potential Free Contact
Display:
- LCD-display with back-light (HH: MM: SS) - 12/24 Hour Mode, number of satellites with selected Constellation.
Security and Protection:
- Password Protection with password strength monitor
- SSH
Network Time Protocol:
- NTP v2, (RFC 1119), NTP v3 (RFC 1305), NTP v4, (RFC 5905), SNTP v3 (RFC 1769), SNTP v4 (RFP 2030), MD5 / SHA1 Authentication
- Upto 7,500 NTP requests per second
- 40,000 NTP Slaves supported
- 250,000 SNTP Slaves supported
- Internet Protocol: IPv4/IPv6
- NTP version 4.2.8p7
- Time Protocol: TIME (RFC 868)
- Daytime Protocol: DAYTIME (RFC 867)
- Supports Unicast, Multicast and Broadcast
- NTP Peering
Local / Remote Management:
- RS-232C (DB-9)
- USB Serial
- 10/100BaseT Ethernet RJ45
- 1 x External Alarm Relay Contact.
- Telnet / SSH (option to disable clear text communication to comply with NERC security requirements)
- CLI Control Interface (Tera Term or putty)
- SNMPv2, SNMPv3 Traps (MIB provided)
- Syslog, HTTP, HTTPS, TCP, UDP, FTP, SCP, SFTP.
Antenna Specifications:
- Antenna Type: Active
- Polarization: Right hand circular
- Frequency Band: L1 1575.42 MHz ± 10 MHz, L5 (1176.45 MHz)
- Amplifier Gain: For L1 band: 40dB ± 2dB, For L5 Band: 42dB ± 2dB
- VSWR: <2.0 Max, 1.0 Typical
- Operating temperature: -40C to +85C
- Out of Band Rejection: > -60dB @ ± 50MHz off center (1575.42 MHz) frequency
- Lightening Protection: According to EN61000-4-5 Level 3 (Optional).
- Ingress Protection: IP67
- LMR400 (or equivalent) Cable Length - 30, 50, 60 and 90 meters
Power Supply:
- Dual Redundant
- 1+1 AC power (100 to 240V AC, 50/60 Hz, IEC C14 Inlet Connector)
- 1+1 DC 24V, 1+1 DC 48V
- 1+1 DC 110~220V
- AC or DC
- Reverse Polarity Protection
The NTP Server is available with three GNSS configuration options, allowing customers to select the most suitable model based on operational, security, and resilience requirements.
Option #1 – GPS (L1):
- Supported Satellite Constellation: GPS only
- Frequency Band:
- Suitable for standard timing applications where single-constellation GPS support is sufficient.
Option #2 – Dual-Band Multi-GNSS Clock with Jamming & Spoofing Detection:
- Supported Satellite Constellations: GPS, Galileo (E5a), NavIC
- Frequency Bands:
- L1-1575.42 MHz (GPS, Galileo)
- L5-1176.45 MHz (GPS, Galileo E5a, NavIC).
- Features:
- GNSS jamming detection alerts
- GNSS spoofing detection alerts
- Suitable for critical infrastructure applications requiring enhanced reliability and signal monitoring.
Option #3 – Dual-Band Multi-GNSS Clock with Anti- Jamming & Anti-Spoofing:
- Supported Satellite Constellations: GPS, GLONASS, Galileo (E5a), NavIC
- Frequency Bands:
- L1-1575.42 MHz (GPS, GLONASS, Galileo)
- L5-1176.45 MHz (GPS, Galileo E5a, NavIC).
- Features:
- Advanced anti-jamming protection
- Advanced anti-spoofing mechanisms
- Robust signal validation and interference detection
- Automatically switching to the other band if any one band is jammed to maintain satellite lock and provide the alert.
- Designed for high-security and mission-critical environments requiring maximum GNSS resilience.
Note: All NTP Server configuration options support the same INPUT and OUTPUT interfaces, protocols, and timing outputs. The differences between the options are limited only to the supported GNSS constellations and security features.
