Datasheet

Studio Technologies, Inc. Model 5402 Dante Leader Clock with GNSS Synchronization, Issue 5, Page 2
The unit’s three Gigabit Ethernet (GigE) network interfaces
can be configured for use in a range of network implementa
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tions. For high-reliability audio applications two of the inter
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faces can support redundant Dante operation while the third
can be used for accessing the management webpages.
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 5402 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,
GNSS antenna, DC power, and AC mains interconnections.
Updating the Model 5402’s operating software can be easily
performed using a USB flash drive.
Applications
Applications for the Model 5402 include broadcast and post-
production facilities, college and university audio networks,
arenas, stadiums, corporate installations, and virtually any
application where substantial numbers of Dante-compatible
devices are utilized. The Model 5402 will serve as a stable
and consistent Leader clock for the entire Dante “network.”
And, as expected, the Model 5402 is compatible with all
Dante devices, no matter what their function or whom their
manufacturer. Applications that utilize devices compatible with
AES67 will also benefit from the Model 5402’s resources. With
its ability to “lock” to a satellite-based time standard, multiple
Model 5402 units can be deployed literally “around the world”
and maintain synchronized PTP performance.
Why a Dedicated Dante Leader
Clock?
With Dante ubiquitous in fixed and mobile facilities of all sizes
and types, the need arose for a cost-effective, purpose-de
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signed, dedicated Leader clock. While an inherent strength of
Dante networking is its carefully implemented use of the IEEE
1588 standard to ensure that all connected devices maintain
a common timing reference, the actual performance can vary
widely depending on the specific Dante devices in use and
the overall number of devices on a network. There are many
Dante-compatible devices that can provide adequate basic
performance as a Leader clock, but with the Model 5402 net
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worked audio systems get the benefits of a high-performance
Primary Leader Clock, along with additional unique capabili
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ties. The unit’s feature set, along with the associated internal
hardware and software, was designed to provide optimum
performance, flexibility, and system integrity.
Timing Sources
The Model 5402 can provide excellent Leader clock per-
formance using a timing reference that is based on signals
provided by one or more GNSS (satellite) constellations. This
will ensure accuracy and stability that exceeds the capability
of standard Dante devices by at least an order of magnitude.
A configuration choice is provided in a Model 5402 webpage
to allow a failover source of timing to be selected should a
valid GNSS signal become unavailable.
The Model 5402 will also provide strong Leader clock per
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formance using its temperature-stabilized internal oscillator.
While its standalone performance is excellent, it can also be
“locked” to a variety of external signals for integration into fa-
cilities that already include a central or main timing reference.
Compatible signals include word clock, video reference, and
10 MHz. Word clock is a square wave signal that is often used
as a timing reference in audio-only facilities. Video reference
(“sync”) signals are found in most broadcast and post-produc
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tion facilities. The Model 5402 supports the most-common
video format/rate combinations including “black burst,” bi-
and tri-level HD, and several that are specifically intended
for 4K applications. Industrial and commercial facilities often
utilize a source of 10 MHz sine wave as a timing reference.
GNSS Support
The Model 5402’s internal time base can be synchronized
to signals received from satellite-based timing systems.
Most often referred to as “GPS,” satellite-based time and
position data is more properly identified as being received
from a GNSS (Global Navigation Satellite System). GPS
(Global Positioning System) is just one set of satellites that
can provide GNSS data. For maximum flexibility the Model
5402 contains an integral receiver that is compatible with
the four major worldwide GNSS constellations: GPS (USA),
Galileo (Europe), BeiDou (China), and GLONASS (Russia).
In addition, the unit allows augmentation support for GPS
as provided by QZSS (Japan). Configuration choices allow
which constellations will be utilized by the Model 5402. This
can range from one to all four constellations. Using these
capabilities, the Model 5402 can achieve single-digit nano
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