Issue 4, August 2021
Model 5401A User Guide
Page 20
Studio Technologies, Inc.
Model 5401A
DANTE LEADER CLOCK
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 be connected to the Model 5401A by way of a BNC jack that is located on the unit’s back
panel.
Lock Status:
This is a display-only field that can
show Unlocked, Locked followed by one of the word
clock rates, Locked followed by one of the video rates,
or Locked (10 MHz). It’s also possible that it could
display Error which would indicate a Model 5401A
hardware problem. This would be a rare occurrence
and, in this case, contacting the factory would be
recommended.
This field reflects the operation of the Model 5401A’s
sync input circuitry. Unlocked will display if no signal
source is connected or if the connected source doesn’t
match the selected sync input type. For example,
Unlocked will display if Word Clock has been selected
as the sync input type but a video sync signal has
been connected. The detected rate will be displayed
following the term Locked whenever the sync input
is locked to the connected signal. If this is a word
clock signal then one of the six compatible rates will
be displayed: 44.1, 48, 88.2, 96, 176.4, or 192 kHz.
If Locked displays due to a video source being con-
nected then the actual rate/format characteristics will
also be displayed. If the sync input is locked due to
a 10 MHz signal being recognized then Locked (10
MHz) will display. The compatible sync input sources
are listed in Appendix A of this guide.
Unlocked will be displayed, in the text color red, if the
sync input has been selected on the Main menu as
the Model 5401A’s clock source but either no signal is
connected to the sync input or a non-compatible signal
is connected. A non-compatible signal would include
a sync input type being selected for Word Clock and
then a word clock signal at a different rate than the
current Dante sample rate is connected. For example,
an incompatible situation would be where the current
Dante sample rate is 48 kHz but the connected word
clock signal is 96 kHz. Probably the most common
non-compatible signal would be a situation where a
video reference signal is connected to the sync input
but the sync input type was left at the default (Word
Clock) rather than being selected for Video.
Current Dante Sample Rate:
This is a display-only
field that can show 44.1 kHz, 48 kHz, 88.2 kHz, 96
kHz, 176.4 kHz, or 192 kHz. It can also display Error
in the unlikely event that there is an issue with the
Brooklyn II module that provides the Model 5401A’s
Dante interface.
This field displays the Model 5401A’s currently se-
lected sample rate as used by the Model 5401A’s
Dante transmitter (output) channels. The Dante
