Model 5401A User Guide
Issue 4, August 2021
Studio Technologies, Inc.
Page 5
Model 5401A
DANTE LEADER CLOCK
Introduction
The Model 5401A Dante Leader Clock provides
precise timing signals for applications that utilize the
Dante audio-over-IP media networking technology.
The unit implements a high-performance IEEE® 1588
precision time protocol (PTP) server, compatible with
the requirements of Dante and capable of simultane-
ously supporting the timing needs of up to hundreds
of Dante-compatible devices. As expected, the Model
5401A provides the PTPv1 (IEEE 1588-2002) com-
patibility that’s required by Dante. In addition, the
unit supports PTPv2 (IEEE 1588-2008) for AES67
applications. A word clock output provides a general-
purpose timing reference for use by external devices.
The Model 5401A also generates eight sine wave
audio tones on Dante transmitter (output) channels
which can be useful during audio and data network
installation, maintenance, and operation. A sync input
connection allows the Model 5401A’s internal oscil-
lator to be synchronized with a variety of timing and
reference signals.
The Model 5401A is suitable for use in fixed and mo-
bile broadcast facilities, post-production studios, com-
mercial and educational theater environments, and
entertainment applications. Only power and one, two,
or three Ethernet network connections are required for
full operation. Using Dante’s inherent capabilities two
Model 5401A units can serve in primary and backup
Leader clock roles for redundant operation.
The unit’s three Gigabit Ethernet (GigE) network
interfaces can be configured for use in a range of
network implementations. For high-reliability audio
applications two of the interfaces can support Dante
redundancy operation while the third is used for
accessing the management webpages. To meet the
latest interoperability standard the Model 5401A’s
Dante implementation supports AES67-2018. The
unit also integrates with the Dante Domain Manager™
(DDM) software application.
An integrated web server allows fast and flexible
monitoring and configuration of the unit’s networking,
clocking, and Dante performance. Front-panel LED
indicators, an LCD display, and pushbutton switches
provide users with direct access to key operating
parameters.
The Model 5401A can be powered by 100-240 V,
50/60 Hz mains or a source of 12 volts DC. Both can
be simultaneously connected to provide redundant
operation. The lightweight enclosure mounts in one
space (1U) of a 19-inch equipment rack. Industry-
standard connectors are used for Ethernet, DC power,
and AC mains interconnections. Updating the Model
5401A’s operating software can be easily performed
using a standard USB flash drive.
Applications
Applications for the Model 5401A include broadcast
and post-production facilities, college and university
audio networks, arenas, stadiums, corporate installa-
tions, and virtually any application where substantial
numbers of Dante-compatible devices are utilized.
The Model 5401A will serve as a stable and consis-
tent Leader clock for the entire Dante “network.” And,
as expected, the Model 5401A is compatible with all
Dante devices, no matter what their function or manu-
facturer. Applications that utilize devices compatible
with AES67 will also benefit from the Model 5401A’s
resources.
Figure 1. Model 5401A Dante Leader Clock front and back views
