The Best NTP server provider in the world is Meinberg https://www.meinbergglobal.com/

1. Network Time Sync Solutions
for Traffic Control and Safety
In addition to accurate synchronization of your IT-Networks, Devices and
Instruments to the worldwide standard time, UTC (Coordinated Universal Time),
Meinberg Radio Clocks will also supply you with reliable time visualization
options.
• Synchronizing your IT-Networks, Devices and Instruments
• Visualizing Your Time
Synchronizing your IT-Networks, Devices and Instruments.
An absolutely flawless transport system is needed to provide optimized and safe
air-, train- and shipping traffic.
Synchronized time makes it possible
Please see down below all Meinberg products which will keep
your systems synchronized!

2. DCF600HS: DCF77 radio clock for
35mm DIN mounting rail.
DCF77 radio clock with serial RS232 interface, pulse per second, pulse per minute
and integrated DCDC converter for 19...72VDC operating voltage in plastic
housing for DIN mounting rail.
Key Features
• Internal DCDC converter for 19..72VDC operating voltage
• Pulses per second and per minute
• RS232 interface
• Receiver status LEDs
• DCF77 radio clock

3. NUC80E: Slave Clock Driver
Slave Clock Driver NUC80E
Slave Clock Driver NUC80E for up to 80 slave clocks, cascadable, second slave
line and minute slave line with short circuit proof pulse outputs.
Key Features
• Up to 80 Slave Clocks and cascadable
• Second Slave Line and Minute Slave Line, Short Circuit Proof Pulse Outputs
• Alphanumeric Display
• Autotracking of the Slave Clocks
• Buffered RAM
• +5V Supply for a Radio Clock

4. Slaveclocks: Analog Wall Clocks
Analog Wall Clocks
Key Features
• Slave Clock for bipolar Minute Lines
• 30cm or 40cm in Diameter
• Metal Number Plate with or without numerals
• Analog wall / slave clock also available as NTP clock with PoE (Power over
Ethernet)

5. ANZ14: LED Display with DCF77 Radio
Clock Option (ANZ14/DCF77)
The 14-digit LE-Display shows the time, date and day-of-week. The displays
brightness is adjustable via the menu. RS232 or 20mA-interface, unlimited
series connection possible, with buffered hardware clock and integrated power
supply unit.
The Network option ANZ14/NET: can act as a slave clock for Meinberg LANTIME
NTP Time Server.

6. Key Features
• Stand Alone Radio Clock or Display for external Clock
• Adjustable display brightness
• Good visible LED Display for Time, Date and Day-of-the-Week
• Buffered hardware clock
• optional as Slave Clock for Meinberg LANTIME NTP Time Server
(ANZ14/NET)
• Integrated Power Supply (100 - 240VAC)
• Configuration with two push buttons and setup menu.

7. Meinberg Products for Traffic
Control and Safety
• LANTIME M-Series: M300, M600, M400
• LANTIME IMS Series: M1000, M500

8. 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).
LANTIME M300 Physical Dimensions NTP server backplane with programmable
pulse outputs and RS232 COM port

9. Key Features of LANTIME M300
• Selectable Reference Time Sources:
1. GPS: Satellite receiver for the Global Positioning System
2. GNS: Combined GPS/GLONASS/Galileo/BeiDou satellite receiver (L1 frequency
band), can also be used for mobile applications
3. PZF: DCF77 correlation receiver for middle europe
4. MSF: Long wave receiver for Great Britain
5. WWVB: Long wave receiver for the US time signal
6. TCR: Time code receiver for IRIG A/B, AFNOR or IEEE1344 codes
7. MRS: (GPS, PPS, 10MHz, NTP): Multi Reference Source - several reference
sources, adjustable following priority of signal
8. 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

10. • Supported net protocols: IPv4, IPv6, NTP, (S)NTP, DAYTIME, DHCP, HTTP, HTTPS,
FTP, SFTP, SSH, SCP, SYSLOG, SNMP, TIME, TELNET
• Alert-Notification system of status change by Email, Win Mail,
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 front panel 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 independent RJ-45 Ethernet interfaces 10/100
Mbit.
NTP server M300 with different receiver options (GS,WWVB,MSF...) Rear view M300RDT NTP Time Server with
1 x 10/100 Mbit and 3 x10/1000 Mbit Ethernet

11. LANTIME M600: High End NTP Time Server
The Meinberg LANTIME time server is used around the world to provide accurate
time to networks of any size. It synchronizes all systems either NTP- or SNTP-
compatible and uses an integral Meinberg reference clock as its time source to
synchronize all timing outputs with the utmost accuracy. The front panel includes a
VF Display and keypad for easy configuration, and indication of the receiver and
NTP subsystem status. A high quality precision OCXO is standard in the M600, to
allow this time server to meet the stringent holdover requirements.
LANTIME M600 Physical Dimensions LANTIME M600 with VFD,menu buttons,
status LED's and the serial Console port and front USB port

12. Key Features of LANTIME M600
• Selectable Reference Sources:
1. GPS: Satellite receiver for the Global Positioning System
2. GNS: Combined GPS/GLONASS/Galileo/ BeiDou satellite receiver (L1 frequency band), can also be
used for mobile applications
3. MRS: (GPS, PPS, 10MHz, NTP): Multi Reference Source - several reference sources, adjustable
following priority of signal
Optional Time Source GNS - GPS / GLONASS / Galileo / BeiDou Receiver:
The GNSS satellite receiver clock has been designed to provide extremely precise
time to its user. The clock has been developed for applications where conventional
radio controlled clocks can't meet the growing requirements in precision. High
precision available 24 hours a day around the whole world is the main feature of
the new system which receives its information from the satellites of the American
GPS (Global Positioning System), the Russian GLONASS (Global Navigation Satellite
System), the European Galileo and the Chinese BeiDou navigation service.
This GNSS receiver can be configured to use up to three GNSS constellations at the
same time: besides GPS and GLONASS, Beidou and Galileo are also available.

13. The GNSS board has several different optional outputs, including programmable
pulses, modulated / unmodulated time codes and RS232 COM ports, depending
on the hardware configuration.
Satellite receiver for mobile applications:
The GNSS timing board is designed for operating in mobile environments like cars,
trains or airplanes. An optimized active L1 antenna RV-76G with 10 meters coax
cable RG-58 for operation in mobile environment is still available.
The GNSS satellite receiver can determine its position under the following
conditions:
1. an acceleration of up to 5G
2. a speed of up to 500 m/s
3. an altitude of up to 18,000 meters
The variety of inputs/outputs makes this receiver the first choice for a broad
range of applications, including time and frequency synchronization tasks and the
measurement of asynchronous time events.

14. Technical specifications of the combined GPS / GLONASS receiver:
1. Number of channels: 72
2. Frequency band: L1
3. Standard accuracy: GNSS
Accuracy of pulses (depends on oscillator option):
• < ± 100ns (TCXO, OCXO LQ)
• < ± 50ns (OCXO MQ, OCXO HQ, OCXO DHQ)
Type of antenna: Combined GPS/GLONASS antenna
• Antenna with integral surge voltage protection
Frequency band:
1. GPS: 1575.42 ± 10 MHz
2. GLONASS: 1602-1615 MHz
3. Galileo: 1542.5 MHz
4. BeiDou: 1561.09 MHz
• Antenna gain: ≥ 3.5 dBic / ≥ 3 dBic
• Supply Voltage: 5 V
• Nominal impedance: 50 ohms
• Connector: N, female (bottom)
• Maximum length of antenna cable (without amplification): 70 meters (type Belden
H155)

15. • 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, Win Mail, 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 front panel 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
• Four independent network interfaces (standard configuration)
• Option: 5 network ports and one IEEE 1588 interface (also see PTPv2
Grandmaster)
• One 10/100 MBit interface for LANTIME management and three network ports
with Gigabit Support (3GE)

16. LANTIME M400: Rail Mount NTP Time Server
with MEINBERG reference receiver
NTP Time Server with Reference Clock for Industrial
The LANTIME M400 Time Server offers an unparalleled flexibility and versatility and
provides accurate time to your network in a compact and full-featured DIN rail
mount package for industrial applications such as power generation, transmission
and distribution (substation automation), process control and industrial automation
systems. The M400 includes an LC-Display and keypad and an extremely broad
range of available options.

17. Key Features
• Selectable Reference Sources:
1. GPS: Satellite receiver for the Global Positioning System
2. GNS: Combined GPS/GLONASS/Galileo/BeiDou satellite receiver (L1 frequency band), can also
be used for mobile applications
3. PZF: DCF77 correlation receiver for middle europe
4. MSF: Long wave receiver for Great Britain
5. WWVB: Long wave receiver for the US time signal
6. TCR: Time code receiver for IRIG A/B, AFNOR or IEEE1344 codes
7. MRS: (GPS, PPS, 10MHz, NTP): Multi Reference Source - several reference sources, adjustable
following priority of signal
• Synchronization of NTP and SNTP compatible clients
Physical Dimensions LANTIME M400 Bottom view M400-Accessible Connectors

18. • Web-based status and configuration interface (Demo) and console-based
graphical configuration utility
• Supported net protocols: IPv4, IPv6, NTP, (S)NTP, DAYTIME, DHCP, HTTP,
HTTPS, FTP, SFTP, SSH, SCP, SYSLOG, SNMP, TIME, TELNET
• 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
• Up to 5 Network Interfaces

19. IMS - LANTIME M500: Time and Frequency
Synchronization in Rail Mount Chassis
Modular Time- and Frequency Synchronization System for Industrial
The full-featured DIN railmount package has one power supply slot, a clock
module slot, a CPU slot and two slots for additional input and output modules.
Both, wide range AC and a 20-72 VDC power supply model are available.

20. Key Features
• Optimized space usage
• Synchronization of NTP and SNTP compatible clients
• Web-based status and configuration interface , and console-based graphical
configuration utility
• IMS - Intelligent Modular System platform
• Up to 2 PTP (IEEE 1588-2008) modules
• Hot Plug
Module view M500 with PTP TSU and CPE Outputs IMS M500- Input and Output Connectors

21. • Arbitrary combinations of modules
• 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
• Up to 8 additional LAN ports
M500- Rear view with rail and Grounding Connector

22. IMS - LANTIME M1000: Time and Frequency
Synchronization Platform in 1U Rackmount-Enclosure
Versatile and Modular Solution for Time and Frequency Synchronization
Application in 1U housing
The 1U chassis has two power supply slots, optional two clock module slots, a CPU
slot and four (three in case of a second reference clock) slots for additional input
and output modules. Adding a second clock module and a second power supply
transforms the IMS - M1000 into a fully redundant solution. Both, wide range AC
and a 20-72 VDC power supply model can be mixed and matched as required.

23. Key Features of LANTIME M1000
Rear view LANTIME M1000 with redundant power Supply
• Optimized space usage.
• Synchronization of NTP and SNTP compatible clients.
• Web-based status and configuration interface,and console-based graphical configuration
utility.
• IMS - Intelligent Modular System platform.
• Up to 4 PTP (IEEE 1588-2008) modules.
• Redundant power and receiver option (eg GPS / GLONASS combination).
• Hot Plug.
• Arbitrary combinations of modules.
• 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.
• Up to 16 additional LAN ports.