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Model 5401A User Guide Issue 4, August 2021
Studio Technologies, Inc. Page 33
Model 5401A
DANTE LEADER CLOCK
will blink red if there is an issue communicating with
the internal Dante Brooklyn II module. It will light green
when the Dante interface is operating normally and is
ready to pass Dante data.
The SYNC LED will light red to indicate that the Model
5401A’s Dante interface has not established timing
synchronization. The complete action of the SYNC
LED will depend on the Switch configuration as set
using the Dante Controller application. If Switched or
SMgmt has been selected then the SYNC
LED will slowly flash green if this specific Model 5401A
is serving as the PTPv1 Leader clock for the associ-
ated Dante network. This will be a normal situation as
usually this unit will be providing the timing reference
for all of the other Dante devices. The SYNC LED
slowly flashing green can be misconstrued as an error
condition, but it is not. The SYNC LED slowly flashing
green will mimic the action that other Dante devices
will perform if they are acting as the Leader clock.
The SYNC LED will slowly flash orange if the Model
5401A is serving as the PTPv1 Leader clock for the
Dante network and its failover mode is active. This
would indicate that the unit was specified to utilize the
sync input but is not able to do so. If the SYNC LED
is lit solid orange then the Model 5401A is not acting
as the PTPv1 Leader clock for the Dante network and
the failover mode is active.
The SYNC LED lighting orange, whether solid or
flashing, would typically indicate an error condition
that should be resolved. The SYNC LED will light
solid green when the Model 5401A is acting as the
Follower clock. In this case, the unit is using another
Dante device on the network to provide its timing
reference. This would not be a typical situation and
might only occur while performing system testing or
serving in a backup role.
If Redundant or ReMgmt has been selected
then the SYNC LED will slowly flash green if this
specific Model 5401A is serving as the PTPv1 Leader
clock for either the Dante primary or Dante secondary
network. The SYNC LED will slowly flash orange if this
Model 5401A is serving as the PTPv1 Leader clock
for the Dante primary network and its failover mode is
active. This would indicate that the unit was specified
to utilize the sync input but is not able to do so.
If the SYNC LED is lit solid orange then the Model
5401A is not acting as the PTPv1 Leader clock for
the Dante primary network and its failover mode is
active. The SYNC LED lighting orange, whether solid
or flashing, would typically indicate an error condition
that should be resolved.
The SYNC LED will light solid green when the Model
5401A is not acting as the PTPv1 Leader clock for
the Dante primary and Dante secondary networks,
unless the unit is locked to another Leader clock. In
this case, the unit is using another Dante device to
provide the timing reference for the Dante primary
network. This would not be a typical situation and
might only occur while performing system testing or
serving in a backup role.
The management webpages should be utilized to
observe the Model 5401A’s complete sync status.
Using the Home and Main webpages, the status of
the Dante primary and Dante secondary interfaces,
including their support for PTPv1 and PTPv2, will be
displayed.
Note that it’s possible that up to 30 or 40 seconds may
be required for the SYNC LED to reach its final state
after the Model 5401A powers up or performs a reboot
(restart). Also, both the SYS and SYNC LEDs will flash
red whenever the Model 5401A’s network configura-
tion mode is changing. (This would be performed us-
ing the Dante Controller application.) After the revised
network configuration has been established the SYS
and SYNC LEDs will perform normally.
External Lock LED
An LED, labeled SYNC IN, is associated with the
status of the Model 5401A’s external synchronization
input. If the unit’s main clock source has been config-
ured to utilize an external source of sync then the LED
will light green if a valid source has been connected.
The SYNC IN LED will light red if a valid signal has not
been connected. This would typically indicate an er-
ror condition that should be investigated. If the Model
5401A’s main clock source has not been selected to
use the external sync input then the SYNC IN LED
will function in a slightly different manner. It will light
green whenever a valid source is connected to the
external sync input. It will not light if a valid source has
not been connected.