Meinberg LANTIME M300 User manual

Technical Information
Operating Instructions
M300 / TCR

Contact Information
Meinberg Funkuhren GmbH & Co. KG
Auf er Lan wehr 22
D-31812 Ba Pyrmont
Telephone: [phone] / 9309-0
Telefax: +49 (0) 52 81 / 9309-30
Internet: http://www.meinberg.de
E-Mail: [email protected]
Ba Pyrmont, 18. Dezember 2006

Table of Contents
Quick Start..................................................................................................................... 7
Network Timeserver with TCR synchronize time base...............................................8
The Mo ular System LANTIME...................................................................................9
Supporte Network Services.............................................................................. 11
A itional Features an Options........................................................................12
User Interface..................................................................................................... 12
Options............................................................................................................... 12
Why to use a Network Timeserver..................................................................... 13
Network Time Protocol (NTP).................................................................................... 13
NTP Target......................................................................................................... 14
NTP-Client Installation...................................................................................... 14
IRIG receiver TCR510.................................................................................................16
Description of IRIG-Co es...................................................................................... 16
IRIG-Stan ar format.............................................................................................. 17
AFNOR-Stan ar format.........................................................................................18
Overview..................................................................................................................18
Function principle.................................................................................................... 19
Input Signals............................................................................................................ 20
Input for unmo ulate co es................................................................................... 20
Input for mo ulate co es....................................................................................... 21
Input impe ance.......................................................................................................21
Booting the Single Boar Computer............................................................................22
Configuration User Interface....................................................................................... 23
Configuration via LC Display..................................................................................24
The menus in Detail................................................................................................. 25
Root Menu..........................................................................................................25
Menu: Reference Clock Information....................................................................... 27
Menu IRIG Receiver State................................................................................. 27
IRIG system state: Bit 7 ... 0.............................................................................. 28

IRIG system configuration Bit 2 ... 0................................................................. 28
Menu Offset from UTC......................................................................................29
Menu IRIG Co e................................................................................................ 29
Menu Simulation Mo e......................................................................................29
Menu Initial Time an Date............................................................................... 29
The LANTIME configuration interfaces..................................................................... 30
The web interface.........................................................................................................31
Configuration:Main Menu....................................................................................... 32
Configuration: Ethernet........................................................................................... 33
Network interface specific configuration.................................................................35
IPv4 a resses an DHCP..................................................................................35
IPv6 a resses an autoconf.............................................................................. 35
High Availability Bon ing................................................................................. 36
A itional Network Configuration.....................................................................37
Configuration: Notification......................................................................................38
Alarm events.......................................................................................................39
E-mail messages................................................................................................. 39
Win ows Popup Messages.................................................................................40
SNMP-TRAP messages..................................................................................... 40
VP100/NET wall mount isplay........................................................................ 40
User efine Alarm scripts................................................................................. 41
Alarm messages..................................................................................................41
Configuration: Security............................................................................................42
Passwor .............................................................................................................43
HTTP Access Control.........................................................................................43
SSH Secure Shell Login..................................................................................... 44
Generate SSL Certificate for HTTPS ................................................................ 45
NTP keys an certificates...................................................................................46
SNMP Parameter................................................................................................46
Configuration: NTP................................................................................................. 47
NTP Authentication............................................................................................50
NTP AUTOKEY................................................................................................ 52
Configuration: Local................................................................................................55
A ministrative functions.................................................................................... 56
User Management...............................................................................................57
A ministrative Information................................................................................ 58
Software Up ate................................................................................................. 59
Automatic configuration check.......................................................................... 60
Get Diagnostics Information.............................................................................. 61
Web interface language...................................................................................... 61
Configuration: Statistics.......................................................................................... 62
Statistical Information........................................................................................ 63

Configuration: Manual.............................................................................................64
The Comman Line Interface...................................................................................... 66
CLI Ethernet.............................................................................................................67
CLI Notification.......................................................................................................70
Alarm events.......................................................................................................70
E-mail messages................................................................................................. 71
Win ows Popup Messages.................................................................................72
SNMP-TRAP messages..................................................................................... 72
VP100/NET wall mount isplay........................................................................ 72
CLI Security.............................................................................................................73
Passwor .............................................................................................................73
SSH Secure Shell Login..................................................................................... 73
Generate SSL Certificate for HTTPS ................................................................ 74
NTP keys an certificates...................................................................................74
CLI NTP Parameter................................................................................................. 75
CLI NTP Authentication.................................................................................... 76
CLI NTP Autokey.............................................................................................. 76
CLI Local................................................................................................................. 77
A ministrative functions.................................................................................... 77
User Management...............................................................................................78
A ministrative information................................................................................ 78
Software Up ate................................................................................................. 79
SNMP Support.............................................................................................................80
Configuration over SNMP ...................................................................................... 82
Examples for the usage of the SNMP configuration features............................ 83
Further configuration possibilities......................................................................84
Sen special timeserver comman s with SNMP................................................84
Configuration of the timeserver with SNMP: Reference................................... 86
SNMP Traps.............................................................................................................89
SNMP Trap Reference....................................................................................... 90
Attachment: Technical Information.............................................................................91
Skille /Service-Personnel only: Replacing the Lithium Battery............................. 91
Technical Specifications M600/300 Multipac......................................................... 91
Safety instructions for buil ing-in equipment......................................................... 92
CE-Label.................................................................................................................. 92
Rear Panel Connectors.............................................................................................93
Connector Assignments........................................................................................... 93

Technical Specifications TCR510........................................................................... 94
Signal escription TCR510................................................................................ 96
Rear Connector Pin Assignments TCR510........................................................ 97
Technical Specifications LAN CPU........................................................................ 98
Rear Connector Pin Assignments LAN CPU.....................................................99
VGA, Keyboar Connector Pin Assignments.................................................... 99
Technical Specifications Power Supply NLP65.................................................... 100
Declaration of Conformity.....................................................................................101
Manual VP100/NET Display configuration.......................................................... 102
Global Configuration File...................................................................................... 104
Global Option File................................................................................................. 105
Thir party software...............................................................................................106
Operating System GNU/Linux......................................................................... 106
Samba............................................................................................................... 106
Network Time Protocol Version 4 (NTP)........................................................ 107
mini_http ........................................................................................................ 107
GNU General Public License (GPL)................................................................ 108
USB Stick.............................................................................................................. 112
Menu Structure................................................................................................. 112
Menu Configuration Files................................................................................ 113
Menu Script Files............................................................................................. 114
Keypa locking.................................................................................................114
Reference............................................................................................................... 115

Q ick Start
When booting the system the following message will be isplaye while ots will
be counte up in the lower line:.
Main Menu will be isplaye with some important status informations after booting
has finishe :
TCR: no data available Wed, 18.11.2003
NTP: Not Sync UTC 10:03:30
==>
TCR: NORM L OPER TION Wed, 18.11.2003
NTP: Not Sync UTC 10:04:10
If the TCR receiver remains asynchronous (Ref.Time LED is still re after 1 minute)
the selecte IRIG co e an the cable (Input Impe ance) are to check. Press bottons
i,g,i from main menu to enter SETUP TCR PARAMETERS. Then press OK to
isplay the current selecte IRIG-CODE:
For first time installation enter TCP/IP a ress, netmask an efault gateway. To get
an overview of the current configuration press F2 from main menu. Press F2 again to
enter SETUP configuration page. Please ask your a ministrator for propper TCP/IP
configuration:
Then press 3 times the OK button to change to IPV4 ETH0 configuration page to
enter the IP a ress, netmask an the efault gateway:
After this all further settings can be one via network interface, either by using a
WEB browser or a Telnet/SSH Session.
Default user: root
Default passwor : timeserver
7
MEINBERG TIMESERVER please wait...
.......
SETUP
Parameter Configuration
SETUP: TCR P R METERS
IRIG Code: B122/B123
SETUP: Ipv4 L N Parameter ETH0
Ipv4 DDRESS: 192.168.10.200

Network Timeserver with TCR synchronized time base
LANTIME (Local Area Network Timeserver) provi es a high precision time base
to a TCP/IP network (Stratum-1-Server). The NTP (Network Time Protocol) is use
to synchronize all NTP clients with the reference. The several LANTIME variants
iffer from each other by the time reference. A GPS receiver, a DCF77 receiver or an
IRIG time co e receiver can be integrate as an internal reference as well as a
combination of these references (hybri system). External references are also
possible. LANTIME/TCR is a set of equipment compose of a IRIG Time Co e
Receiver TCR510, a single-boar computer with integrate network boar an a
power supply, all installe in a metal 19" mo ular chassis an rea y to operate. A
simplifie LINUX operating system is installe on the single-boar computers flash
isk. Four push buttons an a 2 x 40 character LC isplay can be use to configure
an monitor the time server. After the network connection has been establishe the
time server can also be configure an monitore remotely from a workstation via
TELNET or FTP. An integrate HTTP server enables access to the LANTIME by
using an or inary WEB browser.
8

The Mod lar System LANTIME
LANTIME M300 is a set of equipment compose of a reference clock (e.g.:
satellite controlle clock GPS167or Time Co e Receiver TCR5xx), a single-boar
computer SBC LX800 500 MHz with integrate network car , an a power supply
unit NLP65, all installe in a metal esktop case an rea y to operate. The interfaces
provi e by LANTIME are accessible via connectors in the rear panel of the case.
Details of the components are escribe below.
9

The implemente NTPD istributes the reference time from the GPS receiver
cyclic in the network. Information on the NTPD is monitore on the LC isplay or
can be inquire via the network.
The installation of LANTIME is very easy for the system/network a ministrator. The
network a ress, the netmask an the efault gateway have to be configure from the
front panel of LANTIME. The network a ress or the equivalent name of LANTIME
has to be shown to all NTP clients in the TCP/IP network.
As well as NTP the Linux system also supports a number of further network
protocols: HTTP(S), FTP, SSH an Telnet. Because of this remote configuration or
status requests can come from any WEB browser. This access via the network can be
eactivate . Changes in the receiver status, errors or other important events are
logge either on the local Linux system or on an external SYSLOG-Server. In
a ition messages can be sent to a ata center via SNMP traps or automatically
generate e-mails where they can be recor e . Furthermore all alarm messages can be
isplaye by the large isplay VP100/20/NET that is accesse via network
connection. In or er to avoi a service interruption several LANTIME NTP servers
can be installe in the same network to obtain re un ancy.
10

S pported Network Services
The following network services are provi e via RJ45 10/100Base-T Ethernet (Auto
sensing):
- NTP v2, v3, v4
- NTP broa cast mo e
- NTP multicast
- NTP symmetric keys
- NTP Autokey
- Simple Network Time Protocol (SNTP)
- TIME
- SNMP v1,2,3 with exten e SNMP-Agent an SNMP-Traps for NTP an refer-
ence clock status
- DHCP Client
- NFS
- TELNET
- FTP
- HTTP
- HTTPS with Openssl2
- SSH2 Secure Shell Login
- Alarm messages via e-mail
- IPv6
- 3 global IPv6 a resses configurable
- Autoconf Feature to be isable
- supporte network services: NTP, HTTP, HTTPS, SNMP, SSH
- Win ows „net time“ via NETBIOS
- Winpopup (Win ow Mail)
11

Additional Feat res and Options
- external NTP timeserver
- free configuration of NTP: thereby MD5 authentication an access control via a -
ress & mask restriction
- exten e menu gui ance for configuration an monitoring via Telnet, SSH or
serial terminal interface
- optional up to 3 RJ45/10/100 Mbit Ethernet interfaces
- exten e HTTP statistic support with long-term graphic an access statistic to
NTP
- alarm messages can be isplaye on external large isplay VP100/20/NET
- USB memory stick slot for exten e functionality: software up ate, transfer of
secure certificates, log files an configurations, keypa locking
User Interface
- terminal connection via serial interface, status LED
- Web browser interface with graphical statistic of the one- ay cycle offsets
- Telnet or Secure Shell Login for passwor protecte operation of the Linux oper-
ating system
- FTP access for up ating the operating system an ownloa ing log files
- Simple Network Management Protocol for automatically SNMP-Traps in case of
alarm
- SYSLOG messages can be passe to ifferent computers
- configurable e-mail notification
- Simulation of a synchronous ra io clock in or er to operate without antenna
Options
- up to two further Ethernet RJ45 connectors
- Frequency an pulse outputs via BNC connectors (e.g. 10 MHz, 2.048 MHz, PPS)
- higher free running accuracy with optional oscillators (OCXO)
- IRIG-B outputs
- ANZ14/NET or VP100/20/NET as isplay connecte via network
12

Why to se a Network Timeserver
A network timeserver shoul be use if accurate time is essential for un isturbe
operation. It is possible to synchronize computers in a network using Public Domain
Time servers over the Internet, but there are goo reasons not to use them:
- The possibility to sen notification via e-mail or SNMP-Trap to an a ministrator
in the event of any synchronisation failure.
- The computers in the network o not have a reliable internet connection.
- The computers in the network cannot rely on the availability of external timeserv-
ers. Most operators of these timeservers o not guarantee continuous availabil-
ity nor the accuracy of their service.
- NTP is able to compensate for the propagation elay of the network packets only
in case of “usual” internet traffic. However, if unforeseen occurrences cause
ba ly fluctuating propagation times, it is possible that the time synchronisation
is isturbe . Reasons for this may be: hacker attacks, numerous upcoming new
viruses etc.
- An own timeserver cannot be easily compromise by external sources.
Network Time Protocol (NTP)
NTP is a common metho for synchronization of har ware clocks in local un
global networks. The basic concept, version 1 [Mills88], was publishe in 1988 as
RFC (Request For Comments). Experiences ma e from the practical use in Internet
was followe by version 2 [Mills89]. The software package NTP is an
implementation of the actual version 3 [Mills90], base on the specification RFC-
1305 from1990 ( irectory oc/NOTES). Permission to use, copy, mo ify an
istribute this software for any purpose an without fee is hereby grante (rea File
COPYRIGHT).
NTP's way of operation is basically ifferent from that of most other protocols. NTP
oes not synchronize all connecte clocks, it forms a hierarchy of timeservers an
clients. A level in this hierarchy is calle a stratum, an Stratum-1 is the highest level.
Timeservers of this level synchronize themselves by a reference time source, such as
a ra io controlle clock, GPS-receiver or mo em time istribution. Stratum-1-Servers
istribute their time to several clients in the network which are calle Stratum-2.
A high precision synchronization is feasible because of the several time references.
Every computer synchronizes itself by up to three value time sources. NTP enables
the comparison of the har ware times an the a justment of the own clock. A time
precision of 128 ms, often better than 50 ms, is possible.
13

NTP Target
The software package NTP was teste on ifferent UNIX systems. Many UNIX
systems have pre-installe a NTP client. Only some configurations have to be ma e
(/etc/ntp.conf - see NTP Client Installation). NTP clients as freeware or shareware are
also available for the most other operating systems like Win ows
XP/2000/NT/95/98/3x, OS2 or MAC. The following WEB site is recommen e to
get the latest version of NTP: "http://www.eecis.u el.e u/~ntp/". More information
you can fin on our web page at "http://www.meinberg. e/english/sw/ntp.htm".
NTP-Client Installation
The following example shows the installation of a NTP client un er UNIX. First
make sure that there is no NTP installe on your computer because many UNIX
operating systems inclu e NTP alrea y.
The shippe source co e of the NTP aemon has to be compile on the target system.
Using the enclose script file configures the compilation of the NTP aemon an all
tools.
configure
All necessary information from the system will be collecte an the correspon ing
make files will be generate in the sub irectories.
After that the NTP aemon an all nee e utilities will be generate . Therefore type:
make
While compiling the NTP aemon several warnings may appear. These warnings are
mostly unimportant. In case of problems uring the compilation rea the system
epen ent notes in the sub irectory ‘html’.
Afterwar s the generate programs an tools have to be move in the correspon ing
irectories. Therefore type:
make install
The time a justment can occur in ifferent ways. Either the system time can be set
once by using the tool "ntp ate lantime" or the NTPD aemon is starte . In the first
case it is recommen e to set the time automatically with "cron" or once when
booting the system. The secon case is escribe below.
First a file name /etc/ntp.conf has to be generate with an e itor. A apting the file to
Meinberg LANTIME it shoul contain the following:
# Example for /etc/ntp.conf for Meinberg LANTIME
server 1 7.1 7.1.0 # local clock
server 17 .16.3.35 # TCPIP address of LANTIME
# optional: Driftfile
# driftfile /etc/ntp.drift
# optional: activate all messages in syslogfile
# logconfig =all
14

The NTP aemon is starte with "ntp " or, using "rc.local", while booting the system.
Status messages uring operation are save in /var/a m/messages an /
var/a m/syslog (correspon ing to the syslog configuration).
e.g.: tail /var/log/messages
shows the last lines from the file "messages"
The status messages can also be re irecte in a log file by using the following option:
ntpd -llogfile
The comman "ntpq" in the irectory "ntpq" requests the actual status of the NTP
aemon (see also oc/ntpq.8).
e.g.: ntpq/ntpq
An interpreter appears; Type "?" for a list of all available comman s. The comman
"peer" is use to list all active reference clocks:
remote refi st t when poll reach elay offset jitter
================================================================================
LOCAL(0) LOCAL(0) 3 l 36 64 3 0.00 0.000 7885
lantime .GPS. 0 l 36 64 1 0.00 60.1 15875
with the following meaning:
- remote: list of all vali time servers (ntp.conf)
- refi : reference number
- st: actual stratum value (hierarchy level)
- when: last request (secon s)
- poll: perio of requesting the time server (secon s)
- reach: octal notation of the successful requests, shifte left
- elay: elay of the network transmission (millisecon s)
- offset: ifference between system time an reference time
(millisecon s)
- jitter: variance of the offsets (millisecon s)
Repeate ly "peer" comman s lets the user observe the accuracy of the NTP aemon.
Every 64 secon s (value of -poll) a new time string is re in from the ra io clock. The
NTP aemon nee s approx. 3...5 minutes for initialisation. This is in icate by a
wil car (*) on the left si e of the remote name.
The NTP aemon terminates itself if the system time iffers from the UTC time by
more than 1024 secon s. This often happens when the time zone is not correctly set
(see also system manual "zic" or "man zic").
15

IRIG receiver TCR510
The transmission of co e timing signals began to take on wi esprea importance
in the early 1950´s. Especially the US missile an space programs were the forces
behin the evelopment of these time co es, which were use for the correlation of
ata. The efinition of time co e formats was completely arbitrary an left to the
in ivi ual i eas of each esign engineer. Hun re s of ifferent time co es were
forme , some of which were stan ar ize by the „Inter Range Instrumantation
Group“ (IRIG) in the early 60´s.
Except these „IRIG Time Co es“ other formats, like NASA36, XR3 or 2137, are still
in use. The boar TCR510 however only eco es IRIG-A, IRIG-B or AFNOR NFS
87-500 formats. The AFNOR co e is a variant of the IRIG-B format. Within this co e
the complete ate is transmitte instea of the ‘Control Functions’ of the IRIG-
telegram.
Description of IRIG-Codes
The specification of in ivi ual IRIG time co e formats is efine in IRIG Stan ar
200-98. They are escribe by an alphabetical character followe by a three- igit
number sequence. The following i entification is taken from the IRIG Stan ar 200-
98 (only the co es relevant to TCR510 are liste ):
character bit rate esignation A 1000 pps
B 100 pps
1st igit form esignation 0 DC Level Shift
wi th co e
1 sine wave carrier
amplitu e mo ulate
2n igit carrier resolution 0 no carrier (DC Level
Shift)
1 100 Hz, 10 msec
resolution
2 1 kHz, 1 msec resolution
3 10 kHz, 100 msec
resolution
3r igit co e expressions 0 BCD, CF, SBS
1 BCD, CF
2 BCD
3 BCD, SBS
BCD: time of year, BCD-co e
CF: Control-Functions (user efine )
SBS: secon s of ay since mi night (binary)
16

IRIG-Standard format
17

AFNOR-Standard format
Overview
The Boar TCR510 was esigne for the eco ing of unmo ulate an mo ulate
IRIG- an AFNOR-Timeco es. Mo ulate co es transport the time information by
mo ulating a sinusoi al carrier signals amplitu e whereas unmo ulate signals
employ a pulse wi th mo ulate DC signal.
The receivers automatic gain control allows the reception of signals within a range
from abt. 600mVpp up to 8Vpp. The potential free input can be jumper selectable
terminate in either 50 Ω, 600 Ω or 5 kΩ. Mo ulate co es are applie to the boar
via an on boar SMB connector.
18

The unmo ulate or 'DC Level Shift' timeoc es are applie via SUB-D connector on
rear panel. Galvanic insulation of this input is obtaine by an opto coupler evice.
TCR510 provi es two configurable serial ports ( RS232 or 1xRS485 option ), a pulse
per minute an per secon ( PPS / PPM ) as well as a DCF Simulation port at TTL
Level. Further three fixe frequency outputs at 100 kHz, 1 MHz an 10 MHz at TTL
Level are available.
F nction principle
After the receive IRIG-Co e has passe a consistency check, the software clock an
the battery backe realtime clock of TCR510 are synchronize to the external time
reference. If an error in the IRIG-telegram is etecte , the boar s system clock
switches into hol over mo e.
Apart from the co es AFNOR NFS 87-500 an IEEE1344, IRIG-Co es o not carry
a complete ate but the number of the ay within the current year ( 1...366 ). Hence
the ate that is output in the serial telegram must be complete by the ate store in
the buffere real time clock. The ay within the current year calculate from the
RTCs ate is compare with the ay number from the IRIG-Co e every minute.
When a mismatch between these two ay numbers is etecte the boar signalizes
freewheeling mo e, however the systems time base will continue to synchronize with
the IRIG-signal. The DCF-Simulation is surpresse in this case.
Time an ate of the real time clock can be set by a Meinberg Stan ar Telegram via
serial port COM0. Receive IRIG-time can be re-calculate into UTC provi e that
no time zone changeovers such as aylight saving appear in the receive IRIG-
telegrams. For more information please see chapter 'UTC-Offset' in the online
ocumentation of the enclose software TCRMON.
IRIG-telegrams do not incl de anno ncers for the change of time
zone (daylight saving on/off) or for the insertion of a leap second.
Start or end of daylight saving time is exec ted with a delay of one
second by TCR510PCI therefore. If a leap second is inserted, the
system clock will be set to second ‘0’ for two consec tive seconds.
The boar TCR510 eco es the following formats:
A133: 1000 pps, amplitu e mo ulate sine wave signal, 10 kHz
carrier frequency
BCD time of year, SBS time of ay
A132: 1000 pps, amplitu e mo ulate sine wave signal, 10 kHz
carrier frequency
BCD time of year
A003: 1000 pps, DC Level Shift pulse wi th co e , no carrier
19

BCD time of year, SBS time of ay
A002: 1000 pps, DC Level Shift pulse wi th co e , no carrier
BCD time of year
B123: 100pps, amplitu e mo ulate sine wave signal, 1 kHz carrier
frequency
BCD time of year, SBS time of ay
B122: 100 pps, amplitu e mo ulate sine wave signal, 1 kHz carrier
frequency
BCD time of year
B003: 100 pps,DC Level Shift pulse wi th co e , no carrier
BCD time of year, SBS time of ay
B002: 100 pps, DC Level Shift pulse wi th co e , no carrier
BCD time of year
AFNOR NFS 87-500: 100 pps, amplitu e mo ulate sine wave signal, 1 kHz carrier
frequency
BCD time of year, complete ate, SBS time of ay
Inp t Signals
Mo ulate IRIG or AFNOR-Co es are applie via the on boar SMB connector.
The lea shoul be shiel e . Unmo ulate co es are applie at SUB-D connector on
rear panel. Voltages applie to this input shall not excee 12 V. The IRIG-Co e to be
use must be set at the DIP Switch.
Inp t for nmod lated codes
Unmo ulate IRIG-Co es, often referre to as pulse with co e or DC-Level Shift
Co es ( DCLS ), are fe into the boar via SUB-D connector on rear panel. Insulation
of this input is one by a opto coupler evice. The input circuitry is shown below.
20