Integrated web server

A Web Server is built into the Time Server for status monitoring and network setup.

All Html file sources are located in dataflash with 4Mbit capacity.

User is able to replace source files by using TFTP protocol.

To open main page of Time Server, simply open your browser and type the server's url into the address bar

for example: http://192.168.0.25/

Note, that http://192.168.0.25/ is an example, of course it's needed to type the correct IP address of time server

Your Browser will request the time server's main page and will respond with the page:

Web server navigation legend

UTC server Time

Current UTC time. To obtain new values press reload browser button.

UTC FIX Status

This information is loaded from the GPS receiver. In the NOT FIX state time Server closes the NTP protocol.

Visible satellites

Indicates the total number of satellites from which measurements and computations are made.

GPS Receiver

Describes the status of GPS receiver

available messages are:

message type	message description
O.K.	everything is fine and working
PPS Error	Signal of PPS pulse missing, in this state check the cable from reciever
DATA Error	Serial data from receiver missing, check the cable also
Fatal Error	GPS receiver is not connected, or malfunction occured, check the FUSE on back panel

NTP Ramp

• Indicates the NTP protocol status. If the NTP ramp is open Time Server allow to connect any host with NTP stamp request.
• Otherwise request will be rejcted due to security.
• NTP request will be rejected on the NOT FIX state, or if the glitches will be detected on PPS wire.

Server Name

indicate the user replaceable Time Server Name. Name is used for SNMP traps.

Server Location

Describes the Time Server Location also for SNMP traps implementation

System status legend

Up Time from last boot

Indicates the time in seconds from last boot.

PPS Length

• Describes the length of the PPS pulse from GPS receiver.
• Value is rated in internal counter with period 13usec.
• PPS length must be approx 76800 ticks.
• Strongly in constant length in every second.
• Otherwise time server close the NTP protocol to 100 secs.
• It means that some glitches detected were detected on cable from GPS receiver

Number of PPS glitches

• Indicate the total number of glitches on cable from GPS receiver from server last boot.
• If the Time server detects a glitch, it closes the NTP protocol due to reliability of NTP time stamp to 100 seconds.

Lost UTC FIX

• Indicates the total number of GPS UTC time FIX lost from last boot.
• If the GPS receiver has not fixed UTC, server closes the NTP protocol.

Num of NTP packet Received

Total number of NTP packet received from any host.

Num of NTP packet Rejected

• Total number of NTP packet rejected.
• Packet can be rejected if the UTC FIX has failure or server detected glitches on PPS signal.