Time Machines TM2000B Manuel utilisateur
TM2000B / TM2500B
PTP and NTP Time Server
GPS Time Sourced
Installation and Operation Manual
Table of ontents
1 Introduction............................................................................................................................................1
2 Installation..............................................................................................................................................2
2.1 Location..........................................................................................................................................2
2.2 Connections....................................................................................................................................2
2.2.1 Antenna...................................................................................................................................2
2.2.2 Power......................................................................................................................................2
2.2.3 Network..................................................................................................................................2
2.2.4 Front Panel Indications...........................................................................................................2
3 Configuration.........................................................................................................................................3
3.1 Web Page Default username/password is “admin/tmachine”......................................................3
3.2 Default IP address is 192.168.1.20.................................................................................................3
3.3 Settings Page..................................................................................................................................3
3.3.1 TM2000 Name........................................................................................................................4
3.3.2 IP Address...............................................................................................................................4
3.3.3 Broadcast................................................................................................................................4
3.3.4 Netmask..................................................................................................................................5
3.3.5 Gateway..................................................................................................................................5
3.3.6 DNS1 and DNS2....................................................................................................................5
3.3.7 Disable Web Interface.............................................................................................................5
3.3.8 BNC Output (TM2500 only)..................................................................................................5
3.3.9 Serial Port Output...................................................................................................................5
3.3.10 Password...............................................................................................................................5
3.4 Status Page.....................................................................................................................................6
3.4.1 Time Source............................................................................................................................6
3.4.2 Location..................................................................................................................................6
3.4.3 Date/Time...............................................................................................................................6
3.4.4 Satellites Used........................................................................................................................7
3.4.5 GPS Fix...................................................................................................................................7
3.4.6 NTP Lookups..........................................................................................................................7
3.4.7 Holdover Time........................................................................................................................7
3.4.8 MAC.......................................................................................................................................7
3.4.9 Uptime....................................................................................................................................7
3.4.10 OCXO Correction.................................................................................................................7
3.4.11 Version..................................................................................................................................7
3.4.12 Satellites................................................................................................................................7
3.4.13 NTP Peers.............................................................................................................................8
3.4.14 Clients...................................................................................................................................8
3.5 Update Page....................................................................................................................................9
3.5.1 Update Notes:.........................................................................................................................9
3.6 SNMP Setup.................................................................................................................................10
3.6.1 MIB File-Download TMI-COMMON-SHI.txt....................................................................10
3.6.2 Enable...................................................................................................................................10
3.6.3 SNMP Trap Version..............................................................................................................10
3.6.4 Notification Method..............................................................................................................10
3.6.5 Trap Receiver IP Address......................................................................................................11
3.6.6 SNMP V2 Community Name...............................................................................................11
3.6.7 SNMP V3 R/W User Name..................................................................................................11
3.6.8 SNMP V3 R/W Password.....................................................................................................11
3.6.9 SNMP V3 Engine ID............................................................................................................11
3.7 NTP Settings Page........................................................................................................................12
3.7.1 Start / Stop NTP Server........................................................................................................12
3.7.2 Allow 2D Fix for NTP..........................................................................................................13
3.7.3 Disable Holdover Limit........................................................................................................13
3.7.4 NTP Holdover Time (Minutes).............................................................................................13
3.7.5 Remote NTP Servers Enable................................................................................................13
3.7.6 Remote NTP Servers List.....................................................................................................13
3.7.7 Serve Time Only With Authentication..................................................................................13
3.7.8 Authentication-Upload Key List...........................................................................................13
3.7.9 Set TM2000B time manually................................................................................................14
3.8 PTP Settings Page.........................................................................................................................15
3.8.1 PTP Update Method One/Two Step......................................................................................15
3.8.2 Domain Number...................................................................................................................16
3.8.3 Priority 1 & Priority 2...........................................................................................................16
3.8.4 PTP Transmission Method....................................................................................................16
3.8.5 PTP Post-Holdover Behavior................................................................................................16
3.8.6 Multicast Configuration Log Announce Interval...............................................................16
3.8.7 Multicast Configuration Log Sync Interval.......................................................................16
3.8.8 Multicast Configuration Log Min Delay Request Interval................................................16
3.8.9 Multicast Configuration Log min Peer Delay Request Interval........................................16
3.9 About Page...................................................................................................................................17
3.9.1 Download Log Files.............................................................................................................17
3.9.2 Reboot System......................................................................................................................17
4 Troubleshooting...................................................................................................................................18
4.1 GPS Lock.....................................................................................................................................18
4.2 Resetting to Factory Defaults.......................................................................................................18
5 Locator Data Query..............................................................................................................................19
6 Specifications.......................................................................................................................................20
6.1 Time Server Features and Specifications.....................................................................................20
6.2 GPS Module Specifications..........................................................................................................20
6.3 Antenna Specifications.................................................................................................................21
6.4 TM2500B OCXO Timing Information / Specifications...............................................................21
TimeMachines, Inc.
300 S68th St Place, Suite 100
Lincoln, NE 68510
402 486 0511
Engineered and Manufactured in Lincoln, Ne, USA
Rev 0.4.0 6 24 2020
1 Introduction
The Time Machines PTP Network Time Server is a simple to use GPS sourced time server that will
supply accurate time for all computers and time keeping devices on the network. By placing a time
server on the local network, PTP and NTP time packets are provided without requiring systems to go to
the Internet to get a Stratum 1 time synchronization. The system uses an active GPS antenna to
maintain the current time as broadcast by United States GPS satellites. With this device installed on
your local network, there is no longer the worry that if the Internet connection goes down, time
synchronization is lost across the network. In addition, the TM2000B includes a high precision internal
clock based on an OCXO (Oven controller oscillator) that allows the unit to serve accurate time beyond
loss of the GPS antenna signal.
The TM2500B differs from the TM2000B in that is has a BNC output to allow for 1PPS or a 10MHz
reference signal to be output from the device.
The unit is small and can be placed anywhere within the network layout. The built in high sensitivity
GPS receiver is able to lock multiple satellites from within many buildings or from a window location,
removing the requirement that outdoor antennas be installed.
Setup and use of this time server is straightforward. Simply connect both the included power supply
and the GPS antenna to the base unit and then connect the base unit to the local network. Go to a
computer on the network and browse to the device at its default address to enter the software setup
within the control box. Set parameters to match your network and the system will start to send out time
packets to any device on the system that asks for an update from it. Two servers can be setup to
provide redundancy and more capacity.
When paired with our digital Power Over Ethernet (PoE) or WiFi clocks, synchronized time is assured
no matter the state of your network, or the state of the internet time server the clocks are pointed to.
Accuracy is also improved because the network delay of the internet is highly variable, while the local
LAN connection is likely sub-millisecond delay.
TimeMachine GPS based time servers are suited to any application where coordination of events at
multiple locations is required. Without coordinated network time, searching for problems across
multiple system logs becomes much more difficult. Education, industrial facilities, military
installations, public safety command rooms, government, broadcasting, and hospitals are all candidates
for synchronized time systems.
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2 Installation
2.1 Location
To receive GPS signals the Time Server's antenna must be located in a location where it can “see” the
sky. The GPS module itself is highly sensitive and able to “see” the GPS satellite signals from within
many structures. Multi-Story or metal structures may block the GPS signals such that the antenna must
be located elsewhere. In these cases, the GPS antenna may be located in a window. The Time Server
box can be located anywhere on the network. All that is required is power and a wired network
connection. In the worst case, an outdoor antenna may be required.
2.2 Connections
2.2.1 Antenna
The GPS antenna is connected through the
circular female SMA connector on the rear of the
Time Server. By default, the GPS antenna
connection provides 5.0V to power the LNA in the GPS antenna. This is correct for the supplied GPS
patch antenna with the magnetic base. This voltage can be changed with a jumper on the inside of the
Time Server. The Time Server has to be opened up and a jumper moved.
Jumper J8
A: 3.3V B: 5.0V (default)
The only time this jumper would changed would be to allow use of a different antenna that requires
+3.3V max for the LNA in the antenna.
2.2.2 Power
A +12V power supply is supplied with the unit. Connect to your local power outlet and the barrel
connector to the rear of the Time Server. The time server will begin trying to find the GPS satellites.
On power-up, synchronization to the GPS satellites will take several minutes. No battery backup of
position is provided to allow for a warm start so the Time Server is always starting from scratch in
determining its location to achieve GPS lock.
2.2.3 Network
Connect the 10/100 RJ45 port on the back of the Time Server to a network connection. Verify that the
network settings are correct for your system. See the configuration section of this manual for more
information on doing this.
2.2.4 Front Panel Indications
The front panel of the Time Server is very basic in its appearance. Three LEDs show the current status
of the unit. The “POW” LED indicates that the unit is receiving power through its wall power supply.
To serve time, an accurate GPS lock is required beyond just location information. The GPS lock
process proceeds through several steps and can be followed by watching the two front Yellow LEDs,
LOCK and SEC. Initally, when no lock is present, the Yellow LEDs will be OFF. When a 2D lock is
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achieved, the LOCK LED will begin to BLINK. This is the first stage of GPS lock process. When the
LOCK LED goes to a solid ON state, the GPS now has a 3D lock. The last stage of the GPS lock is the
timing lock. This signifies that the GPS has the most accurate time base available for use in serving
time. To achieve the greatest PTP accuracy, this is required. Once the timing lock has occurred, the
SEC LED will begin to blink once per second.
It is also possible for the LOCK LED to turn off, or blink, after a GPS timing lock has occurred and the
SEC LED continues to blink. This signifies that the TM2000B has an accurate internal time and is
serving time, but is trying to re-establish the timing lock because it was lost for some reason.
3 onfiguration
3.1 Web Page – De ault username/password is “admin/tmachine”
3.2 De ault IP address is 192.168.1.20
All Time Server parameters are accessed on the configuration web page. The page can be accessed by
pointing any web browser at the IP address of the Time Server. The initial IP address is 192.168.1.20
from the factory.
3.3 Settings Page
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3.3.1 TM2000 Name
This is a generic entry that has no effect on the TM2000B operation other than to allow the user to
enter a name for the device to help recognize it when parameter updates are required.
3.3.2 IP Address
The IP address of the unit set to by entering a standard IPv4 dotted quad in this field. 192.168.1.20 or
10.10.0.96 are examples of acceptable formats for this field. Clicking the Submit button will set the
entered IP parameters.
3.3.3 Broadcast
The Broadcast entry is used to control the propagation of network broadcast packets on the network
and to what level they will propagate from the device. This is frequently opposite of the Netmask
setting. This is used by the PTP functions to advertise the presence of the server. Clicking the Submit
button will set the entered IP parameters. THIS IS NOT the address t p int NTP and PTP clients
at, they sh uld given the IP Address.
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3.3.4 Netmask
The Netmask entry determines what addresses are on the local network and what addresses are reached
through the Gateway. Typical Netmasks are 255.255.0.0 or 255.255.255.0. Consult the network
administrator for more information on how this entry should be set. Clicking the Submit button will set
the entered IP parameters.
3.3.5 Gateway
The Gateway IP address is used when a destination address is determine to not be on the local network.
Consult the network administrator for this setting. Clicking the Submit button will set the entered IP
parameters.
3.3.6 DNS1 and DNS2
Enter the IP addresses for the DNS servers on your network.
3.3.7 Disable Web Inter ace
This is a security option. Once the device is configured and operating as expected, it is possible to
check this box, save the setting, and then reboot that device. From that point forward, the web server is
disabled. To recover from this mode, the device must be reset to factory parameters by holding the
front button for about 5 seconds. The IP address will be reset and the web page will be active again.
This allows for a physical security measure to be used to protect settings of the device.
3.3.8 BNC Output (TM2500 only)
On the TM2500B, there is a BNC connector on the back panel. This can be used to output the 1PPS
from the GPS, or generated by hardware during holdover, or it can output a 10MHz reference output.
Only one output can occur at a time and is selected on this page.
3.3.9 Serial Port Output
The output to the serial port is selectable between status information or NMEA strings from the GPS
module. The serial port is a USB-Mini connection that will enumerate on most Windows and Linux
computers as a serial device. It is set to 115200,n81 communications rate.
3.3.10 Password
The Password of the unit can be changed in this field. The existing password is not displayed for
security purposes. Enter the new password and click the “Change Password” button to update. The
TM2000B will then prompt for the new password to be entered to continue access to the web pages.
* Default Username/Passw rd is “admin”/“tmachine”.
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3.4 Status Page
The status page is an information only page. It shows the various pieces of information about the
current working state of the device.
3.4.1 Time Source
This field displays the current source of time. It can be GPS, Peer Time Server, or Manually set.
3.4.2 Location
Location shows the latitude and longitude of the device itself based on the GPS receiver. Paste this set
of coordinates into Google Maps to see your location.
3.4.3 Date/Time
The Date/Time entry shows the current UTC date and time of the device. This is not updated realtime.
Refreshing the page will update this time. Note that it is the clients responsibility to adjust for
timezone and daylight savings adjustments.
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3.4.4 Satellites Used
This shows the current number of satellites that are in view and locked by the GPS receiver.
3.4.5 GPS Fix
This displays the level of the current GPS lock.
No GPS Fix Check cable connections. If connected correctly, likely the antenna needs a better view
of the sky. Obstructions, building materials, window tinting can all cause possible signal issues.
2D - GPS satellites found.
3D Required for serving time.
3.4.6 NTP Lookups
This field updates on a page reload and shows how many NTP time requests have been requested from
client devices.
3.4.7 Holdover Time
When the GPS lock is lost and time is being served by the internal OCXO, this will show the amount of
time in minutes that the holdover state has been active.
3.4.8 MAC
This is an information only field and displays the MAC address of the Time Server.
3.4.9 Uptime
Time elapsed since last boot up.
3.4.10 OCXO Correction
This field shows the frequency correction being applied to correct the OCXO back on to its root
frequency. This value can be saved or reset from this web page. The purpose of saving this value, after
the device has run for a period of a couple hours with 3D lock, is to give a more accurate starting point
for the correction algorithm to begin on power up. If for some reason the value seems wrong or not
working, a Reset is allowed that will, after a reboot, start the algorithm from default and restart the
correction process.
If using the TM2X00B for manual NTP time generation, having the device on the GPS for a period of
time to determine the correction, then saving it, will dramatically improve drift of the TM2X00B when
operated without GPS reception.
3.4.11 Version
Displays current software version running on device.
3.4.12 Satellites
This table shows the current list of locked satellites, their signal strengths (SNR), as well as their
current location over the planet. Refreshing the web page updates the table to their current values.
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