Falcon R-Class | User Guide
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Free-Run mode:
The free-run mode occurs immediately, after a reset, or when the timing
synchronization logic has not yet been synchronized to a reference clock input. In this mode the
frequency accuracy of the clock outputs is equal to the frequency accuracy of the input master clock.
Manual:
The user may select the clock source (None, SyncE, PTP, TDM, External) If this manually
selected clock source is failing, the clock selector will go into holdover state.
Normal (Locked mode):
The input clock references are monitored for frequency accuracy and phase
correctness. If at least one is of the clock reference inputs is qualified, then the logic will start the
lock acquisition of that clock input. And the device logic will enter the normal locked mode. During
the normal locked operation, the time synchronization logic phase locks to the qualified reference
clock and generates output clocks and frame pulses with a frequency accuracy equal to the frequency
accuracy of the input reference clock. The generated clock and frames pulse outputs comply with
specifications as described in Telcordia and ITU-T Telecommunication standard.
Holdover state:
When the timing synchronization logic loses its reference input clock or becomes
degraded, and no other qualified clock references are available, it will enter in holdover mode and
continue to create output clocks based on the reference frequency data collected during the
synchronization process.
PTP Messages
PTP defines the following messages for synchronization and control between devices:
Event message
(timing message): Types of event messages: Sync, Delay_Req, Pdelay_Req,
Pdelay_Req.
General messages
: Announce, Follow-Up. Delay_Resp, Pdelay_Resp_Follow_Up, Management,
Signaling. (Pdelay=Peer delay)
PTP Clock Configuration
This section allows the user to configure the PTP clock configuration settings.
Note: By clicking on PTP Config
“Add New PTP Clock” yo
u get the following additional display
Web GUI: Configuration > Timing > PTP
Figure 4-113: PTP Clock Configuration
