The LANTIME M600/MRS synchronizes all systems that are NTP- or SNTP-compatible and uses a built-in Meinberg GPS radio clock and supports a broad range of other reference time sources like 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 and can also be used as a stable independent time base when operated in free running mode.

As an ultra stable NTP time provider, the LANTIME M600/MRS not only represents a highly accurate source of synchronization for all network devices supporting the Network Time Protocol (NTP) or the Simple Network Time Protocol (SNTP), it also offers a number of legacy time and frequency outputs for keeping non-networked devices in sync.

Front Panel:

1. 1 x Graphical VF display, 256 x 64 dots
2. Buttons:
   • F1 button: show help and additional informations
   • F2 button: overview of network parameters
   • 4 arrow buttons: select next menu and change value of parameters
   • OK button: save changes or enter submenu
   • ESC button: cancel menu and one level up
3. LEDs
   • 3 x Bicolor LEDs:
     - Ref. time (e.g. GPS)
     - Time Synchronization
     - Service (NTP) and Network-Link status
   • 1 x Red alarm LED (configurable)
4. 1 x USB (Rev. 1.1) front panel interface to:
   • install firmware upgrades
   • backup and restore configuration files
   • copy security keys
   • lock/unlock front panel keys
5. 1 x RS232 front panel interface,
   9pin D-Sub male connector for initial setup and configuration

Rear Panel:

1. 4 x LAN interface, RJ45 connector, status LEDs for link, activity, speed (10/100 MBit)
2. 1 x Frequency Synthesizer, from 0.1 Hz up to 10 Mhz, TTL into 50 ohm, female BNC connector
3. 1 x Pulse Per Minute (PPM), TTL into 50 ohm, pulse duration 200 msec, active high, female BNC connector
4. 1 x Pulse Per Second (PPS) input, TTL, pulse duration >= 5µs, active high, female BNC connector
5. 1 x 10 MHz, TTL input, female BNC connector
6. 1 x IRIG-B pulse-width modulated DC output (DCLS), TTL into 50 ohm, active high, female BNC connector
7. 1 x IRIG-B amplitude modulated (AM) sinewave output, peak-to-peak voltage: 3 V into 50 ohm, female BNC connector
8. 1 x Time Code AM (modulated) input, BNC connector, isolated by transformer
9. 1 x Time Code DCLS (unmodulated) input, BNC connector, isolated by opto-coupler
10. 1 x Pulse Per Second (PPS), TTL into 50 ohm, pulse duration 200 msec, active high, female BNC connector
11. 1 x Reference Frequency 10 MHz, TTL into 50 ohm, female BNC connector
12. 1 x Alarm relay output, change-over contact, 3pin DFK connector
13. 2 x RS232 interface, 9pin D-Sub female connector
14. 1 x Meinberg GPS antenna input, BNC connector, isolated
15. Power Supply Unit (85-264V AC) - Power consumption: 25W

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 Algorithm (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.

Application fields for MRS technology:

• 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.
• Monitoring and measurement of synchronization sources, e.g. determining and logging the accuracy of an IRIG generator or a PPS source.

The GNU/Linux operating system of the LANTIMEs SBC (Single Board Computer) has been optimized to ensure a high level of security and reliability. The configuration of the system can be done by using a standard web browser to access 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 LANTIME time servers satisfy 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 the 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 IPv6 networks, the NTP time synchronization as well as the configuration interfaces (Web-based, SSH and SNMP) comes with IPv6 support. You can assign several IPv6 addresses and the system supports automatic configuration by IPv6 autoconf. Because of its modular system architecture it is possible to equip a LANTIME time server with a number of different reference time sources. Optionally several additional frequency-, serial string- and pulse outputs are available and by combining two (even different) time sources and redundant power supplies, high-availability systems are no problem.

The LANTIME M600/MRS is equipped with high precision oscillator "OCXO HQ" (look at oscillator options for details) as standard. The oscillator determines the holdover characteristics (e.g. when the GPS signal is disturbed or jammed). The oscillator option "OCXO DHQ" is available to fulfill higher requirements.

Please Note: 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.

Downloads from Meinberg Homepage

Download Info Sheet: info_lantime-m600-mrs.pdf
Download Manual: info_lantime-m600-mrs.pdf

For Software Downloads visit our Download Page