Overview

Networks of computers are omnipresent, and time synchronization is highly recommended across all enterprises to ensure that diversified systems operate in unison. A reliable time synchronization system improves overall system effectiveness and greatly simplifies troubleshooting during fault analysis by providing accurate and consistent time stamps across the network. The Sertel NTP Time Server acts as a Stratum 0 time source, generating precise time signals to synchronize networks of critical devices such as servers, SCADA, DCS, PLCs, LANs, computer buses, RTUs, and other electrical and communication systems. The system also supports secure file transfer using SFTP over SSH.

Equipped with a high-precision, high-stability internal Rubidium Oscillator, the time server delivers exceptional frequency accuracy in the order of 0.1 PPB, while GPS-based time synchronization maintains accuracy better than 15 ns. Modern devices can receive external IRIG-B (AM) input via BNC connectors and NTP over RJ45 interfaces, enabling seamless integration across large networks. Time stamps can be transmitted over long distances while maintaining synchronization throughout the network, and the system is further enhanced with built-in protection against jamming and spoofing attacks.

T-GPS-300-N7K

KEY FEATURES:

  • Supports GPS, IRNSS (NaVIC), GLONASS, BeiDou, Galileo, and SBAS GNSS receivers.
  • 24-channel GNSS receiver with 12-channel continuous tracking capability.
  • Capable of handling 10,000 to 100,000 requests per second.
  • Supports tracking of up to 48 satellites simultaneously.
  • Equipped with a high-precision Rubidium Oscillator for superior holdover performance and frequency stability.
  • 2×20 / 4×40 character LCD display with keypad to display time, date, latitude, longitude, and time zone.
  • Automatic leap second correction and leap smearing adjustment with information provided over NTP and IRIG-B.
  • RoHS compliant product design.
  • Supports HTTP, SSL, HTTPS, SSH web server interface, SFTP, SCP, IPv4, IPv6, SYSLOG, and SNMP v3/v2 network management protocols.
  • Supports NTPv4, NTPv3, NTPv2, SNTP, and NTP Unicast, Broadcast, and Multicast modes.
  • Equipped with HMAC authentication using Autokey SHA-1, SHA-2 (256/512), and SHA-3 algorithms.
  • Highly customizable output options with all ports dedicated and electrically isolated.
  • Configured to operate as a standalone NTP Time Server with a highly stable internal oscillator.
  • Inbuilt EPROM to retain configuration data even after power reboot.
  • NTP server supports peer NTP servers as reference sources.
  • Supports IPv4 and IPv6, SSH, TACACS+, RADIUS, MD5/SHA authentication, LDAP, and built-in Two-Factor and Multi-Factor Authentication for enhanced security.
  • Accepts a wide range of external input sources including 1PPS, IRIG-B, 10 MHz, and NTP.
TECHNICAL SPECIFICATIONS
GPS ANTENNA
ModelT-GPA-014-S15
Receiving FrequencyL1- 1575.42 MHz; L5- 1176 MHz; S Band – 2492.028 MHz
Tracking code‘L’ Band, ’S’ Band CA code
Geodetic System WGS – 84
No. of Channels24 Channel / Parallel
TypeHelical
Axial Ratio<4 dB
Supply Voltage +5V DC (Internal)
GainOver 40 dBm
Noise Figure Less than 1.5 dBm
Operating Temp-40C to +85 C
Connector BNC
Dimension80(H)x55(D) x 82(W) mm
MountingFixed (Roof mount) IP67 (Ingress Protection Rating)
ENVIRONMENT
Ambient Temperature-40 C to 65 C
Humidity0-90% RH, non-condensing
Power Drain 60W *Depends on Output configuration
Power ConnectorsPhoenix/Wago/C13/C14*
Power Supplies1x or 2x Power Supplies
High Voltage - AC/DC 90-370; VDC 80-260; VAC Low Voltage - DC; 24-60 VDC *
Ingress ProtectionIP20
Configuration Software*
PlatformHTTPS/SSL Browser-based configuration
INPUT
GNSS Antenna inputs GNSS, BNC [F]
External 1PPSTTL, BNC [F], Phoenix/Wago
External IRIG-B TTL/AM, BNC [F], Phoenix/Wago
External 10Mhz0 to 13dBm, BNC [F], Phoenix/Wago
Impedance50 ? Sine Wave / HCMOS / TTL
External NTPLock to External Input, RJ45
ConfigurationWeb server Interface and Sertel Time Management Suite for complete accessibility and configurability of server. SNMP for remote management Keypad for local configuration L1Band GNSS, BNC [F] *Feature Available only on Specific Requests and suitable price points
InputDC IRIG-B Input (BNC)
Disciplined OscillatorTBC*
RubidiumTBC*
VCTCXOTBC*
OCXO TBC*
OUTPUT
1PPSTTL, 50 ? Impedance, BNC [F]
SerialRS232, Wago
EthernetNTP/SNTP, RJ45
FO EthernetNTP/SNTP, SFP
T1/E1/J1 Output RJ45 T1/E1/J1 Output
Fiber OutputST Fiber 62.5/125 ?m, ? 820 nm
Ethernet Interface10/100/1000 MBPS – Copper 1G/2.5G/10G – SFP, SFP+
Ethernet OutputRJ45 - Time Protocols NTP, PTP SFP & SFP+ -Time Protocol NTP
Ethernet ConnectionsRJ45 1GbE/Fast Ethernet
SFP 1GbE`/Fast Ethernet
SFP 2.5GbE`/Fast Ethernet SFP 10GbE`/Fast Ethernet
*Feature Available only on Specific Requests and suitable price points
Alarm Relay3-Pin Form-C NO/NC alarm relay
GPS Receiver
ModelT-GPS-300-N7K
Interface TTL (Normal High)
Input connectorBNC
Output Rate Every second
Power Supply90-260 V AC/DC A&B [Dual]
Display 4x40 / 2x16 / 2x20 LCD
TypeGPS: L1 C/A, L2C,L5 GLO: L1OF, L2OF, GAL: E1B/C BDS: B1I, B2I, IRNSS:L5
184 Channel Parallel-tracking receivers
FrequencyTripe Band - L1 / L5 Band / S Band
Sensitivity (Acquisition)-148 dBm
Sensitivity (Tracking) -167 dBm
Design1U/2U/3U Rack-mount bracket designed for 19 Inch Cabinets Fabricated Heatsinks IP40 (Ingress Protection Rating)
ProtocolNMEA, Sertel Format, Serial String ASCII format.
MECHANICAL SPECIFICATION
Dimensions2U(H) x 485(W) x 185(D) mm (Or) 3U(H) x 485(W) x 185(D) mm *Size Depends on number of outputs
Mounting19†Rack
Weight2.5 KG

*Oscillator Options
*Feature Available only on Specific requests and suitable price points
NETWORK TIME SERVER OPTION
*IEEE 1588v2 (PTP)P2P/E2E delay; 1-Step/2-Step delay; C37.238:2011 Power Profile; C37.238:2017 Power Profile; ITU G.8265.1 Telecom Profile; ITU G.8275.1 Telecom Profile; IEEE 61850-9-3 Power Utility Profile
NTP/SNTPStratum 0 NTP & SNTP Time server; Multicast & Broadcast capability
*PRPIEC 62439-3 (2016); Fast failover slave Supports up to two PRP pairs PTP (IEEE 1588v2) Default & Power Profiles
SecurityLocal Authentication -- TACACS+/RADIUS/LDAP methods
Encryption for NTP, SNMP using MD5/SHA algorithms.
CLOCK ACCURACY TO UTC & NETWORK FEATURES
GPS Time Server Overall Accuracy< 15 ns
1 PPS< 30 ns
NTP Timestamp at Server Source< 10?sec (At client End Depends on Network Architecture for more accuracy)
SNMPV1, V2C & V3 support can be independently enabled Configurable V1, V2C community names & security Fully configurable via Custom SERTEL MIB, SNMP;
Protocols supportedARP, UDP, ICMP, DHCP, SNMP, HTTPS, IPV4, SSH, RADIUS, TACACS,SHA
TTL/Fiber:< 100 ns
PTP Time Stamp< 1?sec
Authentication – SHA-1 [Fixed Length 160 Bits], SHA-2 [256/512], SHA-3
NotificationsSNMP trap generation V1, V2C & V3 SNMPv3 traps can be authenticated Syslog (RFC-3164 & 5424 verities)
Authentication MethodsTACACS+ [TCP Port: 49]; RADIUS [UDP Port: 1812/1813]; LDAP [TCP/UDP Port: 1812/1813]
*Feature Available only on Specific Requests and suitable price points
TEST AND STANDARDS
Dry Heat TestIEC 60068-2-2
Cold TestIEC 60068-2-1
Damp Heat (Steady State) TestIEC 60068-2-3
Sinusoidal Vibration Test IEC 60068-2-6
Dielectric Strength TestIEC 60255-5-0
Pulse Magnetic Field TestIEC 61000-4-9,2016
Radiated RF Power DisturbanceCISPR 14-1,2009
Voltage Fluctuation and Flicker Emission TestIEC 61000-3-3,2013
Harmonics, Inter Harmonics and Low Frequency Immunity TestIEC 61000-4-13,2002
Electrostatic Discharge Immunity TestIEC 61000-4-2,2008
Radiated Susceptibility Test IEC 61000-4-3,2010
Electrical Fast Transient ImmunityIEC 61000-4-4,2012
High Energy Surge Immunity TestIEC 61000-4-5,2014
Conducted RF Immunity TestIEC 61000-4-6,2013
Power Frequency Magnetic Field TestIEC 61000-4-8,2009
Damped Oscillatory Sinusoidal Immunity TestIEC 61000-4-18,2011
Voltage Dips and Interruption Immunity TestIEC 61000-4-11
*Feature Available only on Specific requests and suitable price points
*Output ports are customizable based on the requirements
*Product development is continuous process, subject to change without prior notice