Omicron Lab OTMC 100 Series User Manual page 63

Operation mode
User description
PTP management interface
7.3.3.2 Default pane
Priority 1
Priority 2
OMICRON
Use this list box to select the operating mode for the PTP clock
according to IEEE 1588-2008 (One step or Two step).
One step is the recommended mode since this mode produces less
network traffic. The two step mode should only be used if some
equipment used in the network does not work correctly with the one
step mode.
Enter a description for your OTMC 100. This may be required to
identify the OTMC 100 device uniquely if you are using more than
one OTMC 100 device in the network.
Select the check box to enable access via the PTP management
interface.
Use this field to specify the priority values. To each PTP master
clock, two priority values (Priority 1 and Priority 2) may be assigned
by the user. If more than one PTP grandmaster clock is available in
the network, a clock with a lower Priority 1 value will always be a
preferred master clock over a clock with a higher Priority 1 value (see
IEEE 1588-2008, clause 6.6.2.3). A value in the range from 0 to 255
may be assigned to the Priority 1 parameter (see IEEE 1588-2008,
clause 7.6.2.2).
The Priority 2 parameter (see IEEE 1588-2008, clause 7.6.2.3) is
used if several devices have the same Priority 1 parameter value and
the same clock quality (class, accuracy and variance). The Priority 2
parameter thus allows a finer grained ordering among otherwise
equivalent clocks (see IEEE 1588-2008, clause 6.6.2.3). Lower
values take precedence.
The OTMC 100 web interface
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