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Embedded Web Server
Profile Select
– This drop down list selects the profile to view and change
se�ngs. All of the available profiles can be edited.
Reset to Defaults
– Selec�ng this checkbox and pressing the submit bu�on
resets the selected profile to the default se�ngs for that profile.
Delay Mechanism
– This selects the method for calcula�ng and maintaining
the clock synchronisa�on communica�on delay between master and slave
devices. Both P2P (Peer to Peer) and E2E (End to End) methods are
supported. The best method for a par�cular installa�on will depend on the
type of network hardware used. If all the switches are known to be IEEE
1588 capable, P2P should be used. Otherwise it is best to use E2E.
Announce Interval
– This is the rate at which the announce message is sent,
one per the selected �me. The announce message forms part of the Best
Master Clock Algorithm (BMCA) and contains the proper�es of the clock
which sends it. If a device receives an announce message from a be�er
clock, it will enter the slave state.
Announce Timeout
– This is the �me the unit will wait for an announce
message and is a mul�ple of announce intervals. If no announce messages
are received within the �meout interval, the unit will assume the role of
grandmaster.
Sync Interval
– This is the rate at which the sync message is sent, one per
the selected �me. The sync and follow up messages are sent from the
master to the slave to determine the difference in clock frequency. This
informa�on is used in conjunc�on with the network delay to synchronise
the clocks.
Delay Request Interval
– This defines the rate at which a slave clock sends
delay request messages to the master. The delay request message allows a
slave device to calculate the network delay from the slave to the master.
This op�on is only valid when using the E2E delay mechanism.
Peer Delay Request Interval
– This is the rate at which a device exchanges
peer delay measurement messages. This allows each unit to track the
network delays between itself and its connected neighbours. This op�on is
only valid when using the P2P delay mechanism.
Priority 1 & Priority 2
– These values define a precedence se�ng used by
the best master clock algorithm when selec�ng a grandmaster clock.
Priority 2 defines a fine tune se�ng when mul�ple clock sources have
similar ordering criteria.
Domain
– This defines the group of PTP devices that the unit will
communicate with.
Slave Only
– This op�on limits the unit to being a slave PTP clock only.
PTP Profiles Defaults
Ac�ve Profile:
Default
DSCP:
AF PHB
Sync System Clock:
Enabled
Default Profile:
Delay Mechanism:
E2E
Announce Interval:
2 secs
Announce Timeout:
3 secs
Sync Interval:
1 sec
Delay Request Interval:
1 sec
Peer Delay Request Interval:
1 sec
Priority 1:
128
Priority 2:
128
Domain:
0
Slave Only:
Disabled
AES67 Media Profile:
Delay Mechanism:
E2E
Announce Interval:
2 secs
