Studio Technologies 5401A, Руководство пользователя

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Issue 4, August 2021 Model 5401A User Guide
Page 16 Studio Technologies, Inc.
Model 5401A
DANTE LEADER CLOCK
Main Menu
Once the correct user name and password have been submitted the Main menu webpage will be displayed.
This menu provides the ability to select three important operating parameters as well as displaying seven key
real-time conditions. In addition, the menu system allows direct access to other menu webpages.
Main Clock Source: This is a configurable field with
three choices: Internal, Sync Input, and Dante.
This setting determines which source will be the main
(normal) timing source that is used by the Model
5401A’s circuitry as its own “Leader” timing reference.
This is the clock source that will be used by the Model
5401A’s PTPv1 and PTPv2 servers that are critical to
the Model 5401A’s support of related Dante devices.
When Internal is selected the Model 5401A’s tempera-
ture-stabilized, high-performance crystal oscillator is
utilized. This will provide excellent timing accuracy
and consistent long-term performance. This source is
far superior to that provided by other standard Dante
devices. This is the correct choice if a high-quality
reference signal is not going to be connected to the
sync input.
When Sync Input is selected the Model 5401A’s sync
input function will be utilized. Using a BNC jack, lo-
cated on the Model 5401A’s back panel, an external
source of word clock, video reference, or 10 MHz sine
wave can be connected. Circuitry within the Model
5401A will “lock” (synchronize) the internal timing
signals to the externally provided reference signal.
Selecting Dante will instruct the Model 5401A to
use the clock signal provided by its Dante interface
circuitry as its reference timing source. The Dante
interface circuitry will either use its internal crystal
oscillator or synchronize to another Dante device on
the associated network. The actual clock source used
by the Model 5401A’s Dante interface will depend on
a setting in the Dante Controller application.
The Model 5401A includes the choice of Dante as the
main clock source only for trouble-shooting or other
factory-directed activities. It’s not expected that this
selection will ever be used during normal Model 5401A
operation. By selecting Dante the excellent timing
performance that can be provided by the sync input
or the internal oscillator would not be utilized.