LANTIME M300: NTP Server in 1U Case for Server Rackmount

The Meinberg LANTIME M300 time server provides accurate time to networks of any size. It synchronizes all NTP- or SNTP-compatible systems. The M300 time server uses as a reference time source either any compatible external or built-in Meinberg reference clock (Stratum 1 mode) or up to 7 NTP servers (Stratum 2 mode).

Key Features

Years of warranty: 3 RoHS compliant
  • Selectable Reference Time Sources:
    • GPS: Satellite receiver for the Global Positioning System
    • GLN: Combined GPS/GLONASS satellite receiver (L1 frequency band), can also be used for mobile applications
    • PZF: DCF77 correlation receiver for middle europe
    • MSF: Long wave receiver for Great Britain
    • WWVB: Long wave receiver for the US time signal
    • TCR: Time code receiver for IRIG A/B, AFNOR or IEEE1344 codes
    • MRS: (GPS, PPS, 10MHz, NTP): Multi Reference Source - several reference sources, adjustable following priority of signal
    • RDT: (external PPS or NTP): Time Server without internal receiver module
  • Synchronization of NTP and SNTP compatible clients
  • Web-based status and configuration interface (Demo) and console-based graphical configuration utility
  • 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
  • Meinberg GPS Antenna/Converter Unit connected with up to 300m of standard coaxial cable RG58
  • Meinberg's LANTIME time server is available with a variety of additional output options: IRIG Time Code, frequency synthesizer and programmable pulse outputs illustrate some of the many expansion options for your NTP server
  • Two (standard) or optional up to six independant RJ-45 ethernet interfaces 10/100 MBit

Product Description

A large display shows the state of the NTP subsystem.

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.

Because of its modular system architecture it is possible to equip this LANTIME time server with up to six ethernet ports, even fiber optic network ports and one or three Gigabit Ethernet ports are available as an option.


Display LC-display, 2 x 40 characters, with backlight
Control elements Eight push buttons to set up basic network parameters and to change receiver settings
Status info Four bicolor LEDs showing status of:
- reference time
- time service
- network
- alarm
Frequency outputs 10 MHz via female BNC connector, TTL into 50 Ohm
Accuracy depends on oscillator (standard: TCXO), look at oscillator options
Pulse outputs Pulse Per Second (PPS), TTL level, pulse width: 200ms
Accuracy of pulse outputs Depends on oscillator option:
< ±100ns (TCXO, OCXO LQ)
Interface Two independent serial RS232-interfaces, menu configurable (in case of RDT models without internal receiver - the serial interfaces will be used as reference input).
Optional Output Signals Additional Output Options::
This LANTIME NTP server comes with many additional outputs options: PPS, 10MHz, programmable pulse outputs (PPS, PPM, PPH, DCF_MARK ...), IRIG modulated and unmodulated time code, T1 / E1 telecom signals, Frequency Synthesizer - to name just a few. Contact us for your specific device configuration.
Network Interface Standard: 2 x 10/100 MBit with RJ45 connector

Available Options:
  • 2 or 4 x additional 10/100 MBit with RJ45
  • 1 x 10/100 MBit and 1 x 10/100/1000 MBit (1GE) with RJ45 or
    1 x 10/100 MBit and 3 x 10/100/1000 MBit (3GE) with RJ45 jack
Power supply Standard: 100-240 V AC (50/60 Hz)
available DC variants: 100-240 V DC, 12 V DC and 19 - 72 V DC
Universal Serial Bus (USB) Ports 1x USB Port in front panel:
- install firmware upgrades
- backup and restore configuration files
- copy security keys
- lock/unlock front keys
  • AMD Geode™ LX 800 (500 MHz, 128 KB L2 cache, 3.6 W)
  • Main Memory: onboard 256 MByte
  • Flashdisk: 1 GB
Operating System of the SBC Linux with nano kernel (incl. PPSkit)
Network protocols OSI Layer 4 (transport layer) TCP, UDP
Network protocols OSI Layer 7 (application layer) TELNET, FTP, SSH (incl. SFTP, SCP), HTTP, HTTPS, SYSLOG, SNMP
Internet Protocol (IP) IP v4, IP v6
Network Autoconfiguration Support IPv4: Dynamic Host Configuration Protocol - DHCP (RFC 2131)
IPv6: Dynamic Host Configuration Protocol - DHCPv6 (RFC 3315) and Autoconfiguration Networking - AUTOCONF (RFC 2462)
Network Time Protocol (NTP) NTP v2 (RFC 1119), NTP v3 (RFC 1305), NTP v4 (RFC 5905)
SNTP v3 (RFC 1769), SNTP v4 (RFC 2030)
MD5 Authentication and Autokey Key Management
Time Protocol (TIME) Time Protocol (RFC 868)
Daytime Protocol (DAYTIME) Daytime Protocol (RFC 867)
IEC 61850 Synchronization of IEC 61850 compliant devices by using SNTP
Hypertext Transfer Protocol (HTTP) HTTP/HTTPS (RC 2616)
Secure Shell (SSH) SSH v1.3, SSH v1.5, SSH v2 (OpenSSH)
Telnet Telnet (RFC 854-RFC 861)
Simple Network Management Protocol (SNMP) SNMPv1 (RFC 1157), SNMPv2c (RFC 1901-1908), SNMP v3 (RFC 3411-3418)
Form Factor 19 inch multipac metal case 1U/84HE
Ambient temperature 0 ... 50°C / 32 ... 122°F
Humidity Max. 85%
Scope of supply Included in delivery is a MEINBERG outdoor antenna incl. mounting kit, pre-assembled antenna cable (except MRS, TCR and RDT models) and product documentation on USB storage.
Technical Support Meinberg offers free lifetime technical support via telephone or e-mail.
Warranty Three-Year Warranty
Firmware Updates Firmware is field-upgradeable, updates can be installed directly at the unit or via a remote network connection.
Software updates are provided free of charge, for the lifetime of your Meinberg product.
RoHS-Status of the product This product is fully RoHS compliant
WEEE status of the product This product is handled as a B2B category product. In order to secure a WEEE compliant waste disposal it has to be returned to the manufacturer. Any transportation expenses for returning this product (at its end of life) have to be incurred by the end user, whereas Meinberg will bear the costs for the waste disposal itself.
Additional Information Additional information about the Meinberg LANTIME family of NTP time servers and other LANTIME models can be found on the LANTIME NTP Time Server Family Page .


Short Info Sheet


Please note that only the most recent manual version is available for download. This manual therefore may not be suitable for all product versions.
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