Studio Technologies Dante 5402, Руководство пользователя

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Issue 3, August 2021 Model 5402 User Guide
Page 22 Studio Technologies, Inc.
Model 5402
DANTE LEADER CLOCK WITH GNSS SYNCHRONIZATION
Sync Input Menu
The Sync Input menu has parameters that are related to the Model 5402’s sync input. This allows an external source of
timing to be connected to the Model 5402 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 5402 hardware problem. This would
be a rare occurrence and, in this case, contacting the fac-
tory would be recommended.
This field reflects the operation of the Model 5402’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
5402’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 be-
ing 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 5402’s Dante interface.
This field displays the Model 5402’s currently selected
sample rate as used by the Model 5402’s Dante transmitter
(output) channels. The Dante transmitter (output) channels
provide eight sine wave tones labeled Tone 1 through
Tone 8 . Changes to the Dante sample rate are made using
the Dante Controller software application.
Type: This is a configurable field with three choices: Word
Clock, Video, and 10 MHz.
If the Model 5402’s clock source has been selected to
Sync Input on the Main menu the type of connected source
must be defined to match the application. If Word Clock is
selected then a square wave source with a rate of 44.1,
48, 88.2, 96, 176.4, or 192 kHz needs to be connected. For
proper operation the nominal unloaded level of the word
clock source must be 5 volts DC peak-to-peak. Also, the
connected word clock source must match the displayed cur-
rent Dante sample rate. This is a bit of a “chicken or the egg”
situation since it can be confusing as to who is supposed
to control the sample rate and who is supposed to follow
the sample rate! The Dante Controller software application
should be used to select the desired Model 5402 sample