Data Sheet
A precision voltage-reference circuit helps the ADC circuitry
perform highly accurate signal conversion. The audio signals,
now in the digital domain, are packetized and prepared for
transport over Ethernet networking.
Analog Outputs
The selected Model 5412 version will provide either 8 or 16
line-level analog output channels. Each channel can be indi
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vidually configured to use as its input source a Dante input
(receiver) channel, one of the analog input channels, or a
1 kHz sine-wave tone. In most applications an input (receiver)
channel associated with the unit’s Dante interface will serve
as the audio source. The Dante Controller software application
would be used to select the source which originates from an
output (transmitter) channel on an associated piece of Dante
equipment.
Another configuration choice allows a signal associated with
the analog inputs to serve as the source for an analog output
channel. Useful for troubleshooting purposes, the selected
signal would provide an active “loop through” version of its as
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sociated analog input signal. Also for troubleshooting purposes,
a 1 kHz sine-wave tone can be assigned as the source for any
analog output channel. The resulting analog output signal will
have a nominal level of +4 dBu.
The Model 5412’s analog outputs have a maximum level of
+24 dBu. This allows both compatibility and sufficient head
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room in applications where digital audio signals with a nominal
level of –20 dBFS need to translate into analog signals that
have a nominal level of +4 dBu. For flexibility a configuration
menu choice allows the level of each analog output channel to
be individually adjusted (“trimmed”) over a range of ±20 dB
in 1-dB steps.
The analog outputs are electronically balanced, capacitor-
coupled, and ESD (static) protected. High-quality components,
including the important digital-to-analog converters, are used
to provide low-distortion, low-noise, and sonically-excellent
performance. Robust circuitry provides protection from dam
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age should a moderate DC voltage be accidentally connected,
something especially useful in broadcast applications. The
analog outputs are compatible with virtually all balanced and
unbalanced loads with an impedance of 2 k ohms or greater.
Simple Installation
The Model 5412 uses standard connectors to allow fast and
convenient interconnections. Multiple 25-pin female D-sub
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miniature connectors are used to interface with the analog
input and analog output signals. The unit connects to local
area networks (LANs) using three RJ45 connectors. Multiple
LEDs on the unit’s back panel display the status of the network
connections. A detachable power cord can be used to connect
a source of mains power. Alternately, a DC power source can
be connected using a 4-pin XLR connector. The lightweight
aluminum enclosure mounts in one space (1U) of a standard
19-inch rack enclosure.
Operating Power
The Model 5412 allows an AC mains source of 100-240 V,
50/60 Hz to be connected by way of a standard detachable
mains power cord. It can also be DC powered using a 10-18 volt
source that is connected via a broadcast-standard 4-pin XLR
connector. If both AC and DC power sources are connected
the unit will be powered by the AC mains supply. Only if the
AC mains source fails will a load be placed on the DC source.
This allows a source of DC, such as a battery pack, to serve
in a backup capacity. With this arrangement normal operation
can continue even if AC mains power is lost.
Future Capabilities and Firmware
Updating
The Model 5412 was designed so that its capabilities can
be enhanced in the future. A USB connector, located on the
unit’s back panel, allows the application and FPGA firmware
(embedded software) to be updated using a USB flash drive.
The Model 5412 uses Audinate’s Brooklyn II interface module to
implement Dante. The firmware in this module can be updated
via the unit’s Ethernet connections, helping to ensure that the
Dante capabilities remain up to date. All software files and
configuration parameters are stored in non-volatile memory.
Studio Technologies, Inc. Model 5412 Audio Interface, Issue 2, Page 3
Model 5512-02 Rear View