PAGE 2
Installation and Operation Manual
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 re3.3V
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. Initially, when no
lock is present, the Yellow LEDs will be OFF. When a 2D lock is 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 VZ2
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. CONFIGURATION
3.1 Web Page – Default Username: admin / Default Password: tmachine
3.2 Default 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.
3.2.1 Settings Page.
