Network Dialog - Gorgy Timing LEDI NETWORK TOP Série Mode D'emploi

The following figure shows how the evolution of the two clocks with or without drift:
Drift is null
Evolution during time
Drift is constant
The objective of the synchronization of a NTP client to a NTP server is to reduce as
much as possible the drift and the offset. The accuracy and stability of the client clock
is tightly coupled to the efficiency of the reduction process.

1.1.2. network dialog

The real drift and offset of the LEDI NETWORK TOP clock related to the NTP server
are estimated from a measured offset. This offset is computed by subtracting the client
clock date from the server clock date.
Periodically, the client estimate current offset from the server. This measure is done
using a message-passing mechanism as shown on following figure:
client side
Query server date
Receive reply
MDE-LEDInetworkTOP-4092-V1.1
server time
client time
client time
server time
client time
client time
server side
Network
server time
server time
Return current server date
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