Instruction manual

MXS-EVO - MANUAL
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
MXS-EVO – Manual – Rev 1.7 - 13 -
PTP (IEEE 1588)
The MXS-EVO supports the IEEE 1588-2008 (version 2), also known as Precision Time Protocol, both as master and
slave. When connected to an appropriate device compatible to the IEEE 1588 standard is able to synchronize the slave
apparatus with a precision well below the micro-second.
Note that using network switches non-compliant with IEEE 1588, variable delays in the order of some tens of
microseconds are introduced (as noted in the official website of the Protocol http://ieee1588.nist.gov/switch.htm).
The IEEE 1588 bases its operation on the calculation of the transit time of PTP packets from the master to the slave
(and slave to master).
These latencies are calculated using a simple exchange of messages between master and slave that are associated with
timestamps managed at the hardware level.
Once reconstructed the one-way-delay it is possible to use it to correct the clock of the slave and lock it to the master.
Below is shown the pattern of the loop relative to the clock tuning based on PTP.