LANTIME M300/MRS
NTP Time Server synchronized by GPS/1PPS/10MHz/IRIG/NTP

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The LANTIME M300/MRS (Multi Reference Source) NTP time server supports a broad range of reference time sources like GPS, 1PPS, 10MHz, IRIG time codes (both DCLS and AM) or upstream NTP servers. A highly stable and precise oscillator is capable of bridging interferences or a temporary loss of reception. In totally isolated networks without any available external reference signal, the MRS utilizes its OCXO HQ to maintain a stable time base. The time can therefore be manually set during initial configuration.

Key Features
NTP Time Server synchronized by GPS/1PPS/10MHz/IRIG/NTP

• Accepts a large number of sync references: GPS, 1PPS, 10MHz, IRIG (DCLS and AM) and NTP
• Synchronization of NTP and SNTP compatible clients
• Web based status and configuration interface (Demo) and console based graphical configuration utility
• Supported networking protocols: IPv4, IPv6, HTTPS, HTTP, SSH, TELNET, SCP, SFTP, FTP, SYSLOG, SNMP
• Alert-Notification system of status change by Email, WinMail, SNMP or an external connected display
• Full SNMP v1,v2,v3 support with own SNMP-daemon for status and configuration and SNMP Trap messages
• USB Port for installing firmware updates, locking frontpanel menu access and backup/restore of configuration and log files
• Two independant RJ-45 ethernet interfaces 10/100 MBit

Description
NTP Time Server synchronized by GPS/1PPS/10MHz/IRIG/NTP

The Meinberg MRS technology (Multi Reference Sources) enables you to utilize one or more time and frequency references in prioritized order defined by your individual requirements. The Intelligent Reference Switching Agorithm (IRSA) developed by Meinberg engineers ensures that switching from a highly accurate reference source (e.g. GPS) to a less accurate one (e.g. IRIG or NTP) is delayed as long as the internal ultra stable oscillator is capable of maintaining an accuracy level that is better than the one of the next available reference source in the priority list.

In lab environments the MRS technology offers a flexible solution to changing availability of different synchronization sources and for highly critical operative systems the possibility to use multiple independent sync references allows you to fulfill redundancy requirements of your network synchronization solution.

Another field of applications for MRS technology is the monitoring and measurement of synchronization sources, e.g. determining and logging the accuracy of an IRIG generator or a PPS source.

The MRS version of the LANTIME M300 comes with a high quality OXCO and is designed to act as a reliable time source in applications where no antenna can be installed. The internal OCXO-HQ can be fully disciplined by utilizing one or more remote NTP time servers or the other input sources. In installations where no source of time is available, the LANTIME M300 MRS can be run in a fully independent mode which requires setting the time manually during initial configuration. Such a free running MRS (i.e. without any available external reference like GPS or NTP) develops a maximum time error of less than one second per year.

All outputs of the M300, including PPS, 10MHz and the Sysplex Timer output are fully functional and stable with all possible references (NTP, GPS, 1PPS, 10MHz, IRIG or free running).

The GNU/Linux operating system of the LANTIMEs SBC (Single Board Computer) has been optimized to ensure a high level of security and reliability.

A large LC display shows the state of the internal GPS receiver and the NTP subsystem. Three LEDs (green/red) indicate the status of the three main components: Reference Time (GPS), Time Synchronization Service (NTP) and Network (Link status). A fourth red LED is labelled ALARM and can be configured to signal any event that is covered by the notification handling routines.

The configuration of the system can be managed by using a standard web browser for accessing the extensive but straightforward html interface. Alternatively a text based and menu driven setup utility can be started from the shell prompt after logging into the unit via Telnet or SSH.

The security-related features of Meinberg LANTIME time servers satisfy the highest demands. The time synchronization data can be reliably signed and secured by symmetric keys (MD5) and the NTP autokey procedures. This protects the clients against manipulated time and man-in-the-middle attacks and allows them to verify that the NTP packets they received were send by the LANTIME. Additionally the whole LANTIME configuration can be done by using encrypted channels (e.g. SSH, HTTPS or SNMPv3). Every unused/unneeded protocol can be disabled in order to reduce possible points of attack.

In order to support network management systems our LANTIME time servers offer an extensive SNMP interface, which can be accessed by SNMP V1, V2.c and V3. It allows the monitoring of all relevant system parameters (including operating system parameters, network interface statistics, detailed GPS and NTP status information as well as the complete system configuration) and can be used to alter the LANTIME configuration via SNMP set commands, too.

LANTIME time servers are designed to be deployed in IPv4, IPv6 and dual stack networks , the NTP time synchronization as well as the configuration interfaces (Web-based, SSH and SNMP) comes with full IPv6 support. You can assign several static IPv6 addresses and the system supports automatic configuration by IPv6 autoconf.

Please note that the GPS antenna is not included in the standard scope of delivery and has to be ordered separately, if you are planning to use GPS as a synchronization source.

Characteristics
NTP Time Server synchronized by GPS/1PPS/10MHz/IRIG/NTP

Downloads
NTP Time Server synchronized by GPS/1PPS/10MHz/IRIG/NTP