Manual

Issue 2, July 2021 Model 5401A User Guide
Page 20 Studio Technologies, Inc.
used to provide Dante device timing across
different subnets for complex or especially
large applications. For more in-depth control
of these clocking issues the Dante Domain
Manager (DDM) software application can be
very useful.
Dante Sync Status: The Model 5401A can
simultaneously serve as a Leader clock for
both Dante primary and Dante secondary
networks and is capable of supporting both
PTPv1 (IEEE 1588-2002) and PTPv2 (IEEE
1588-2008). As such the unit is capable of
acting as four independent Leader clocks:
PTPv1 for Dante primary, PTPv2 for Dante
primary, PTPv1 for Dante secondary, and
PTPv2 for Dante secondary. While the
PTP processes are asymmetrical, they do
share the same internal timing reference.
The Model 5401A can also act as a PTPv1
and PTPv2 clock follower but that would
typically be utilized only for test purposes.
Standard and Redundant Dante (no AES67
support) uses PTPv1 and that is always
enabled in the Model 5401A. AES67 utilizes
PTPv2 clocking and if support for AES67
is desired within the Dante environment it
must be enabled using a configuration set-
ting in the Dante Controller application.
The Model 5401A’s Main menu has four
fields that display the real-time sync sta-
tus of the PTPv1 and PTPv2 functions for
the Dante primary and Dante secondary
interfaces. If the network configuration in
Dante Controller for this specific Model
5401A has been selected for Switched or
Switched+Mgmt the clocking status of the
Dante primary interface will be displayed.
In this situation, the Dante primary PTPv1
interface will show Leader, Follower, Link
Down, or Error (with the latter showing in
red text). If AES67 support is enabled in
Dante Controller then the same choices
will also be displayed in the primary PTPv2
field. If AES67 support is not enabled then
Disabled will show in the primary PTPv2
field. Since Dante secondary is not enabled
then the secondary PTPv1 and secondary
PTPv2 fields will show Disabled.
If the Model 5401A’s network configura
-
tion has been selected for Redundant or
Redundant+Mgmt then both the primary
PTPv1 and secondary PTPv1 sync sta-
tus fields will display their respective sync
status. They will show the same choices
as described above: Leader, Follower, Link
Down, or Error (with the latter showing in
red text). If AES67 support is enabled in
Dante Controller then the same choices will
also be displayed in the primary PTPv2 and
secondary PTPv2 fields. If AES67 support is
not enabled then Disabled will show in both
the primary PTPv2 and secondary PTPv2
fields.
Should Leader be displayed in a specific
field it would indicates that this specific
Model 5401A is acting as the Leader clock
for the Dante network and clock function
associated with that field. If Follower is dis-
played this indicates that this specific Model
5401A is obtaining its timing reference from
another Dante device on the network. This
would be the current display if this specific
Model 5401A was serving as a “hot” stand-
by Dante Leader clock.
If Link Down is displayed this will indicate
that a valid Ethernet connection has not
been made to the RJ45 jack associated with
that field’s Model 5401A’s Ethernet inter-
face. A display of Error would indicate that
this specific Model 5401A is having a per-
manent or temporary issue with its internal
circuitry. There may be occasions where
Error would display for a few seconds while
Model 5401A circuitry first becomes active.
Sync Input Menu
The Sync Input menu has parameters that
are related to the Model 5401A’s sync input.
This allows an external source of timing to