Meinberg LANTIME M600 Technical Information Page 1

Technical InformationOperating InstructionsM300 / GPS

The Modular System LANTIMELANTIME M300 is a set of equipment composed of a reference clock (e.g.:satellite controlled clock GPS170

...mbgLtNtp.mbgLtNtpCurrentState.0 = 1 : no good refclock (->local)...mbgLtNtp.mbgLtNtpCurrentStateVal.0 = 1...mbgLtNtp.mbgLtNtpStratum.0 = 12...mb

Configuration over SNMP The LANTIME timeserver can be configured via several user interfaces. Besidesthe possibility to setup its parameters with the

Examples for the usage of the SNMP configuration featuresThe following examples are using the software net-snmp, a SNMP open sourceproject. You will f

The available SNMP variables are described in detail in the “SNMP configurationreference“ part of this manual. Additionally, it is recommende

Further configuration possibilitiesBecause the timeserver uses a standard version of the net-snmp SNMP daemon(with extended features covering the time

GenerateHTTPSKey(5)A new HTTPS key will be generated.ResetFactoryDefaults(6)The configuration of the timeserver is reset to factory d

Configuration of the timeserver with SNMP: ReferenceThe MIB of the timeserver includes the following parts:SNMP Object Name Descriptionenterprises.559

SNMP branch Variable Data type DescriptionmbgLtCfgNtpServer3KEY integer Link to the key which should be usedfor the third NTP-servermbgLtCfgStratumLoc

SNMP branch Variable Data type DescriptionmbgLtCfgNotify mbgLtCfgNotifyNTPNotSyncstring(combination)Exactly one, none or a combination ofthe following

SNMP TrapsIf configured, the LANTIME is sending SNMP traps, which can be received by upto 2 SNMP management systems. These traps can be received by us

The implemented NTPD distributes the reference time from the GPS receivercyclic in the network. Information on the NTPD is monitored

SNMP Trap ReferenceAll traps can be found under the mbgLtTraps section in the Meinberg MIB. Aspecial trap exists for every notification event the time

Attachment: Technical InformationSkilled/Service-Personnel only: Replacing the Lithium BatteryThe life time of the lithium battery on the board is at

Safety instructions for building-in equipmentThis building-in equipment has been designed and tested in accordance with therequirements of Standar

Rear Panel ConnectorsName Type Signal Cable

RS232 TERMINALTo connect a serial terminal use 9 pin SUBD RS232 connector in the front panel.Via the serial terminal connection it possibl

Time Sync Error RelayOn the back panel of the device you can find a DFK connector labeled „Time SyncError“. This relay output is connected to the TTL

Technical Specifications GPS receiverRECEIVER: 6 channel C/A code receiver with external antenna/converter unitANTENNA: Antenna/converter unit with re

Oscillator options117Accuracy of time and frequency outputs of Meinberg GPS- and DCF77 (PZF) receiverswith different oscillator optionsTCXO OCXO LQ OC

Technical Specifications GPS AntennaANTENNA: Dielectric patch antenna, 25 x 25 mmReceive frequency: 1575.42 MHzBandwidth: 9 MHzCONVERTER: Local oscill

Signal Description GPS170Name Pin FunctionGND 32a+c GroundVCC in (+5 V) 1a+c +5 V supplyVCC in (+12 V) 2a+c +12 V supplyP_SEC out 6c Pulse when second

Supported Network ServicesThe following network services are provided via RJ45 10/100Base-T Ethernet (Autosensing):- NTP v2, v3, v4- NTP broadcast mod

Rear Connector Pin Assignments GPS170a c1 VCC in (+5V) VCC in (+5V)2 VCC in (+12V) VCC in (+12V)3 VDD in (TCXO/OCXO) VDD in (TCXO/OCXO)4 (reserved, F

Technical Specifications LAN CPUPROCESSOR: GeodeTM LX800 with 500 MHzMAIN MEMORY: 256 MB CACHE-MEMORY: 16 KB 2nd Level CacheFLASHDISK: 64 MB (128 MB)N

Rear Connector Pin Assignments LAN CPUc b a1 VCC in (+5V) VCC in (+5V) VCC in (+5V)2 VCC in (+5V) VCC in (+5V) VCC in (+5V)3 GND GND GND4 PPS in /AFD

Technical Specifications Power SupplyINPUT: 85 ... 264 V AC, 47 ... 63 Hz, 1 A/230 V, 2 A/115 VFUSE: ElectronicCURRENTLIMITING: 105 – 150 % Iout nomOU

Timecode (option)AbstractThe transmission of coded timing signals began to take on widespread importancein the early 1950´s. Especially the US missile

IRIG Standard Format 125

AFNOR Standard Format 126

Assignment of CF Segment in IEEE1344 Code127Bit No. Designation Description49 Position Identifier P550 Year BCD encoded 1low nibble of BCD encoded yea

Generated Time CodesBesides the amplitude modulated sine wave signal, the board also providesunmodulated DC-Level Shift TTL

OutputsThe module GPS-TC provides modulated and unmodulated (DC-Level Shift)outputs. The format of the timecodes is illustrated in t

Additional Features and Options- external NTP timeserver- free configuration of NTP: thereby MD5 authentication and access control viaaddress & ma

Time StringsFormat of the Meinberg Standard Time StringThe Meinberg Standard Time String is a sequence of 32 ASCII characters startingwith the STX

Format of the GPS Capture StringThe Meinberg GPS Capture String is a sequence of 31 ASCII characters terminatedby a CR/LF (Carriage Return/Line Feed)

Format of the SAT-Time StringThe SAT-Time String is a sequence of 29 ASCII characters starting with the STX(start-of-text) character and ending with t

Format of the Uni Erlangen String (NTP) The time string Uni Erlangen (NTP) of a GPS-clock is a sequence of 66 ASCIIcharacters starting with the STX

i leap second insertion‘L’ leap second is actually inserted(active only in 60th sec.)‘ ‘ (space, 20h) no leap second is insertedbbb.bbbb latitude of r

Format of the NMEA 0183 String (RMC)The NMEA String is a sequence of 65 ASCII characters starting with the ‘$’character and ending with th

Format of the ABB SPA Time StringThe ABB SPA Time String is a sequence of 32 ASCII characters starting with thecharacters ">900WD" and en

Format of the COMPUTIME Time StringThe COMPUTIME Time String is a sequence of 24 ASCII characters starting withthe characters “T" and end

Format of the RACAL standard Time StringThe RACAL standard Time String is a sequence of 16 ASCII characters terminatedby a X (58h) character and endin

Format of the SYSPLEX-1 Time StringThe SYSPLEX1 time string is a sequence of 16 ASCII characters starting with theSOH (Start of Header) ASCII controll

Why to use a Network TimeserverA network timeserver should be used if accurate time is essential for undisturbedoperation. It is possible to synchroni

KonformitätserklärungDeclaration of ConformityHersteller Meinberg Funkuhren GmbH & Co. KG Manufacturer Lange Wand 9D-31812 Bad Pyrmonterklärt in a

Manual VP100/NET Display configurationsend2display Version 0.1usage:send2display -h hostname -s serialnumber [options]Valid options are:-h, --host H U

If you want the message (any type) to appear periodically, you can set the timeinterval with:-D, --periodday D Display message every D days-H, --perio

Global Configuration FileThis file contains all global parameters of the LANTIME. You can find this file onthe write protected flash disk at /mnt/flas

SNMP Write Community String [ASCII,50]:SNMP Contact String [ASCII,50]:MeinbergSNMP Location String [ASCII,50]:Germany# Wind

Third party softwareThe LANTIME network timeserver is running a number of software productscreated and/or maintained by open source pr

Network Time Protocol Version 4 (NTP)The NTP project, lead by David L. Mills, can be reached in the internet atwww.ntp.org

GNU General Public License (GPL) GNU GENERAL PUBLIC LICENSE Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc.

is covered only if its contents constitute a work based on theProgram (independent of having been made by running the Program).Whether that is true de

The source code for a work means the preferred form of the work formaking modifications to it. For an executable work, complete sourcecode means all

NTP TargetThe software package NTP was tested on different UNIX systems. Many UNIXsystems have pre-installed a NTP client. Only some configurations ha

countries not thus excluded. In such case, this License incorporatesthe limitation as if written in the body of this License. 9. The Free Software F

Reference[Mills88] Mills, D. L., "Network Time Protocol (Version 1) - specification and implementation",DARPA Networking Group Report RFC-10

The high precision orbit parameters of a satellite are called ephemeris parameterswhereas a reduced precision subset of the ephemeris parameters is ca

Mounting the GPS AntennaThe GPS satellites are not stationary but circle round the globe in a period of about12 hours. They can only be received if no

Assembly with CN-UB/E18

Booting the GPS receiverIf both, the antenna and the power supply, have been connected the system is readyto operate. About 2 minutes after power-up t

Contact InformationMeinberg Funkuhren GmbH & Co. KGLange Wand 9D-31812 Bad PyrmontTelephone: +49 (0) 52 81 / 9309-0Telefax: +49 (0) 52 81 / 9309-3

For the synchronization of the NTPD with the GPS it is necessary that the GPSreceiver is synchronous with the GPS time. In this case the following

Configuration User InterfaceThere are several ways to configure the LANTIME parameters:Command Line Interface (CLI) via TELNETCommand Line Interface v

The menus in DetailRoot MenuThe root menu is shown when the receiver has completed initialization after power-up. With the four arrow buttons and the

When pressing the „OK“ button from main menu the version of the LANTIMEsoftware, the NTP and the LINUX kernel version will be displaye

Menü: Reference TimeThe Reference Clock menu and all its sub menus will manage all status informationand parameters of the reference clock.To enter th

Setup GPS Receiver ParametersSet Antenna Cable LengthThis menu asks the user to enter the length of the antenna cable. The received timeframe is dela

Init GPS ReceiverInitiate Cold Boot of GPS ReceiverThis menu lets the user initialize all GPS data’s, e.g. all saved satellite data will becleared. Th

Init GPS PositionWhen the receiver is primarily installed at a new location far away from the lastposition saved in the receiver’s memory the satellit

Info GPSGPS Status & VersionThis first menu will monitor the current state („sync“ or „not sync“). The next linewill reflect the firmware version,

GPS Satellite ConstallationThe SV constellation menu gives an overview of the current satellites (SVs) inview. The display shows the number of satelli

Table of ContentsQuick Start... 8Net

Serial OutputsThis menu lets the user configure the baud rate and the framing of the serial RS232port to one of the following values:Baudrate: 300 bis

the display shows the zone and offset if daylight saving is off whereas the right partshows name and offset if daylight saving is on. These parameters

Menu: Time ServiceThe NTP configuration page is used to set up the additional NTP parametersneeded for a more specific configuration

Menu: Restart NTPIf the time of the reference clock has changed (e.g. while testing with differenttimes) the system time has to bet set with the time

Programmable pulse (Option)At the male connector type VG64 there are optionally three programmable TTLoutputs (Prog Pulse 1-3), which are a

Timer mode POUT1 TIMER1: output active:low ON: 10:50:00 OFF: 11:00:00 POUT1 TIMER2: output active:low ON: 13:00:00 OFF: 14:00:00 POUT1

Cyclic modeCyclic mode is used for generating periodically repeated pulses. POUT1 CYCLIC: output active:low TIME: 00:00:02 LNG: 00.10 secThe va

Menu: Synthesizer Frequency Output (Option)The Frequency Synthesizer is an optional output.This setup menu lets the user edit the frequency and phase

Menu: NetworkIn this submenu the network configuration parameters related to the networkinterfaces can be changed. The submenus ca

Setup Global ConfigurationIn this sub menu you can change the global network settings like host and domainname, nameserver and syslog server. Further

Setup Time Zone of Serial Outputs... 30Menu: Time Service...

Setup Network InterfacesSetup Network Ipv4 ParameterThere is a separate configuration submenu for every physical network interface. Ifthere is no DHCP

Menu: Setup Ipv6 ParameterThe IPv6 parameters can be configured via the front panel display for the firstethernet port (ETH0) only. Additional IPv6 co

Menu: Setup ServicesThe possible network protocols and access methods can be configured. Afterpressing the OK button you can enabl

This menu lets the user enter the names of the local time zone with daylight savingdisabled and enabled, together with the zones´ time offsets from UT

The LANTIME configuration interfacesThe LANTIME offers three different options for configuration and statusmanagement: Web interface

The WEB interfaceConnect to the web interface by entering the following address into the addressfield of your web browser:http://198.168.10.10 (You ne

This page will be reloaded every 30 seconds in order to reflect the current status ofthe unit. Please bear this in mind when you try to login and ente

Configuration: Main MenuAfter entering the right password, the main menu page shows up. This pagecontains an overview of the m

Configuration: Ethernet48

In the network configuration all parameters related to the network interfaces can bechanged. In the first section you can change the hostname and doma

Configuration: Security...58Password...

Network interface specific configurationThe interface specific parameters can be found in the Interface section. If yourLANTIME is equipped with onl

Examples: "::" is the address, which simply consists of zeros "::1" is the address, which only consists of zeros and a 1 as the

Additional Network ConfigurationYou can configure additional network parameter like special network routes oralias definitions. For this you will

Configuration: Notification53

Alarm eventsOn this page you can set up different notification types for a number of events. Thisis an important feature because of the nature of a ti

Windows Popup MessagesMost Microsoft Windows operating systems provide you with a local notificationtool. You can send messages via the special Window

User defined Alarm scriptsYou can define your own alarm script for every event by using the “Edit userdefined notification script”. This script w

Alarm messagesYou can change the alarm message text for every event by using the “EditMessages“ button, the messages are sto

Configuration: Security58

PasswordOn the “Security“ page you can manage all security relevant parameters for yourtimeserver. In the first section “Login” the administration pas

SNMP Support...99Configuration over SNMP ...

SSH Secure Shell LoginThe SSH provides you with a secure shell access to your timeserver. Theconnection is encrypted, so no re

Generate SSL Certificate for HTTPS HTTPS is the standard for encrypted transmission of data between web browserand web server. It relies on X.509 cert

NTP keys and certificatesThe fourth and fifth section of the “Security“ page allow you to create the neededcrypto keys and certificates for secure NTP

Configuration: NTPThe NTP configuration page is used to set up the additional NTP parametersneeded for a more specific configuration

available by using the ATOM driver of the NTP subsystem, which is directlyinterpreting the PPS (pulse per second) of t

The NTP Trusttime will specify the time how long the NTP will trust the referencetime if this is not synchronized (free running). This time will be se

NTP AuthenticationNTP version 2 and version 3 support an authentication method using symmetrickeys. If a packet is sent by the NTPD while using this

The ntp.keys file mentioned above holds a list of all keys and their respective IDknown by the server. This file should not be world-readable (only ro

NTP AUTOKEYNTP Version 4 supports symmetric keys and additionally provides the so-calledAUTOKEY feature. The authentic of received time at the NTP cli

A LANTIME can be a trusted authority / trusted host combination and also a “non-trusted” host in such a secure group.To configure the LANTIME as a TA

Time Strings...130Format of the Meinberg Stand

Example:This autokey group is formed by one Stratum-1-server (B), two Stratum-2-servers (Dand E) and a number of clients (in the diagram there are 4 c

Configuration: Local71

Administrative functionsIn the first section there are several functions which may be used by theadministrator. The button “

Please be aware of the fact that the default configuration is not activated instantly. Ifyou want to avoid setting up the IP address of your unit by l

Administrative InformationThe button “List all messages“ displays the SYSLOG of the LANTIMEcompletely. In this log all subsystems

Using the button ”List detailed GPS information“ gives you the possibility to checkdetailed GPS status information. The first parameter indicates the

Software UpdateIf you need to update the software of your LANTIME, you need a special file fromMeinberg, which can be uploaded to the LANTIME by first

Automatic configuration checkAll parameters of the LANTIME can be checked for plausibility and all configuredservers (e.g. SYSLOG servers, nam

Get Diagnostics InformationThe diagnostics information is a set of configuration parameters and files stored ina packed text file. With the help of th

Configuration: Statistics79

Quick StartWhen booting the system the following message will be displayed while dots willbe counted up in the lower line:.Main Menu will be displayed

Statistical InformationIn the first section a graphical diagram shows the running synchronisation process.NTP is storing this statistical information

Configuration: ManualThis page gives you access to the documents stored on your LANTIME, especiallythe manuals and your own notes. The two lists inclu

If you want to add a note (you can maintain more than one note on your LANTIME),after choosing the button “add note” you have to enter a filename (wit

The Command Line InterfaceThe command line interface (CLI) can be used within a TELNET or SSH session.After login, just enter “setup” to start the CLI

CLI EthernetIn the network configuration all parameters related to the network interfaces can bechanged. In the first section you can change the hostn

timeserver cannot be reached with IPv4. Please note that TELNET, FTP andNETBIOS cannot be used over IPv6 in this version. IPv

If the DHCP client has been activated, the automatically obtained parameters areshown in the appropriate fields (IPv4 address, netmask, gateway).You

CLI NotificationAlarm eventsOn this page you can set up different notification types for a number of events. Thisis an important feature becau

E-mail messagesYou can specify the e-mail address which is used as the senders address of thenotification e-mail (From: address), the e-mail address o

SNMP-TRAP messagesUp to two SNMP trap receiver hosts can be configured in this subsection, you mayuse IPv4 or IPv6 addresses or specify a hostname. Ad

Network Timeserver with GPS synchronized time baseLANTIME (Local Area Network Timeserver) provides a high precision time baseto a TCP/IP network (Stra

NTP Client MonitoringYou can monitor a group of NTP clients and supervise the time offset, the NTPstratum value and if the client is reachable or not.

CLI SecurityPasswordOn the “Security“ page you can manage all security relevant parameters for yourtimeserver. In the first section “Login” the admini

If you enabled SSH, your LANTIME automatically is able to use secure file transferwith SCP or SFTP protocol. The usage of FTP as a file transfer proto

CLI NTP ParameterThe NTP configuration page is used to set up the additional NTP parametersneeded for a more specific configuration o

CLI NTP AuthenticationPlease see the corresponding chapter in the web interface description.CLI NTP AutokeyPlease see the corresponding chapter in the

CLI LocalAdministrative functionsIn the first section there are several functions which may be used by theadministrator. The

The function “Reset to factory defaults“ is setting all configuration parameters backto default values. The regular file /mnt/flash/global_configurati

Mar 15 13:35:17 LanGpsV4 ntpd[12948]: frequency initialized 45.212PPM from /etc/ntp.driftMar 15 13:38:36 LanGpsV4 lantime[417]: NTP sync to GPSMar 15

The next section “Satellite Info“ shows information about all the satellites, which arein view momentarily. The satellite ID, elevation, Azimuth and d

SNMP SupportThe Simple Network Management Protocol (SNMP) has been created to achieve astandard for the management of different networks and the compo