Studio Technologies 5110 V.3.2 - Manual (Page 6)

Issue 7, October 2014 Model 5110 User Guide
Page 6 Studio Technologies, Inc.
Model 5110
Mic/Line Input Module
Applications
Applications for the Model 5110 include
sports broadcasting booth packages,
remote news gathering “fly-packs,” stadium
audio/video interface (I/O) locations, and
government/corporate/performance space
infrastructure projects. The number of Model
5110 modules used in a project can vary
widely—from one to dozens. And in each
case the Model 5110’s performance will be
completely “pro” with audio quality, reliability,
and installation flexibility matching that of
large-scale consoles, routers, and transport
resources. Typical applications will find the
Model 5110’s analog and digital outputs
being interfaced with inputs on fiber-optic
transport modules, audio/video routers,
and broadcast/production consoles.
Model 5110 Mic/Line Input Modules do not
include a mounting enclosure or chassis.
They are intended for mounting in custom
19-inch rack panels, equipment boxes,
broadcast furniture, or other specialized
settings. It is expected that integration firms
will create applications that use Model 5110
modules as part of complete broadcast,
production, corporate, and government
solutions.
Mic/Line Inputs
Two microphone or line-level audio signals
can be connected to the Model 5110’s front
panel XLR connectors. Using the front-panel
pushbutton switches, the sensitivity of each
input can be adjusted to one of four gain
settings: line (0 dB), 15 dB, 30 dB, or 45 dB.
To support high-performance microphones
+48 volt phantom power can be selected
as required. Status LEDs are provided to
display the current settings of the sensitivity
and phantom power. A 7-segment LED level
meter is also provided for each channel.
Six pushbutton switches on the Model
5110’s front panel allow rapid selection of
the input gain and phantom power on/off
status. A simple button-press sequence
allows the six pushbutton switches to be
temporarily “locked out” to prevent accidental
adjustment. This can be very useful in field
applications, helping to ensure that unau-
thorized Model 5110 performance changes
are not made. An LED indicator will light to
alert users that pushbutton switch functional-
ity has been disabled.
Analog and Digital Outputs
The Model 5110’s audio performance is sim-
ply excellent. The low-noise, wide dynamic-
range preamplifier sections ensure that input
audio quality is preserved. The outputs of
the mic-preamp circuitry are routed to two
analog audio output sections. These provide
line-level, balanced (differential), capacitor-
coupled outputs.
The audio from the mic-preamps is also
routed to high-performance analog-to-digi-
tal conversion (ADC) sections that support
a sample rate of 48 kHz with a bit depth of
24. A precision voltage reference assists the
ADC circuits in performing accurate conver-
sion. The signals, now in the digital domain,
are formatted into AES3 digital audio. This
2-channel digital bit stream is output as a
75 ohm unbalanced signal for direct connec-
tion into broadcast applications.
All audio inputs and outputs were carefully
designed for use in permanent as well as
field applications. Extensive filtering on
the inputs minimizes the chance that radio
frequency (RF) energy will interfere with
audio input sources. Other components were
included to address ESD (“static”) and DC
overload situations. The DC power input is
protected from accidental polarity reversal.