Model 5110
Mic/Line Input Module
User Guide
Issue 7, October 2014
This User Guide is applicable for serial numbers
M5110-00201 and later with firmware version 3.2 and higher
Copyright © 2014 by Studio Technologies, Inc., all rights reserved
www.studio-tech.com
50175-1014, Issue 7
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Model 5110
Mic/Line Input Module
Table of Contents
Introduction ................................................................... 5
Installation .................................................................... 7
Configuration ................................................................ 8
Operation ...................................................................... 9
Technical Notes ............................................................ 11
Specifications ............................................................... 13
Appendix A–Interconnection Details ............................. 14
Appendix B—Model 5110 Front Panel and
Printed Circuit Board (PCB) Dimensions ...................... 16
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Model 5110
Mic/Line Input Module
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Issue 7, October 2014 Model 5110 User Guide
Page 4 Studio Technologies, Inc.
Model 5110
Mic/Line Input Module
Introduction
The Model 5110 Mic/Line Input Module
is a compact, self-contained 2-channel
module intended for use in custom broadcast, live-performance, and general audio
applications. Offering a “building block”
of resources, the Model 5110 provides
two channels of high-performance audio
capability in an easy-to-use yet technically
sophisticated package. The module’s basic
functions include selectable input gain,
48 volt phantom power, status LED indicators, and analog and digital audio outputs.
Module operation requires only an externally-provided source of 12 volts DC. Advanced features include user control “lock
out” and remote monitoring and control
capability.
General Highlights
The Model 5110 requires an external
source of nominal 12 volts DC for operation. The acceptable input voltage range is
10 to 18 allowing a variety of power sources to be utilized. Internal power supply
circuitry within the Model 5110 creates the
voltages required for the analog and digital
circuitry.
Standard connectors are used throughout
the Model 5110. Input audio connections
are made using gold-plated 3-pin female
XLR connectors. A DIN 1.0/2.3 coaxial
connector is used to interface with the
digital audio output. The 2-channel analog
audio outputs use a 5-position, 0.1-inch
“header” connector. The DC power input
and data bus signals use a 4-position,
0.1-inch header. Low-cost IDC (insulation
displacement) mating connectors allow
simple interconnection with the analog
audio outputs, DC input, and local data
bus signals.
For compliance with international broadcast audio level standards two versions
of the Model 5110 are available. The Model
5110S supports the SMPTE® audio
standards which have an analog audio
reference level of +4 dBu and a digital
audio reference level of –20 dBFS
(SMPTE RP155). The Model 5110E supports applications that require European
Broadcast Union (EBU) compliance where
the analog audio reference level is 0 dBu
and the digital audio reference level is
–18 dBFS (EBU R68).
Figure 1. Model 5110S Mic/Line Input Module Front and Back Views
Model 5110 User Guide Issue 7, October 2014
Studio Technologies, Inc. Page 5
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 unauthorized Model 5110 performance changes
are not made. An LED indicator will light to
alert users that pushbutton switch functionality has been disabled.
Analog and Digital Outputs
The Model 5110’s audio performance is simply excellent. The low-noise, wide dynamicrange 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), capacitorcoupled outputs.
The audio from the mic-preamps is also
routed to high-performance analog-to-digital 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 conversion. 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 connection 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.
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Page 6 Studio Technologies, Inc.
Model 5110
Mic/Line Input Module
Remote Control Capability
With an optional Model 5190 Remote
Access Module up to 16 Model 5110 modules can be remotely monitored and controlled. Using the 5190’s Ethernet interface
personnel using a standard web browser
will be able to access all the Model 5110’s
standard functions, including input sensitivity, phantom power on/off, and pushbutton
switch lock out. In addition to the standard
functions, the 5190 will allow more features
to be utilized. These include expanded
input sensitivity adjustment, channel text
labeling, and module identification. A local 2-wire RS-485 data bus is used to
interface the Model 5190 Remote Access
Module with the one or more Model 5110
Mic/Line Input Modules.
Installation
Integration of the Model 5110 into the
selected application is quite simple, only
requiring connecting to the analog and
digital audio outputs along with DC power.
Some applications will also require connection to the RS-485 data bus. The audio
signals have a nominal level of either +4
or 0 dBu, depending on the Model 5110
version being installed. The DC power
source is nominal 12 volts with an accept
able range of 10 to 18 volts. The RS-485
data bus is a single pair of wires that would
interconnect the Model 5110, along with
other Model 5100-Series modules, to a
remote access card. After the connec
tions have been completed, the module
can then be secured into the designated
mounting location.
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Analog Audio Outputs
Associated with each of the Model 5110’s
two audio output channels is a balanced
(differential), line-level analog output. The
circuitry is electronically balanced and capacitor coupled. The nominal output level
of a Model 5110S (SMPTE) version module is +4 dBu with a maximum output level
of +24 dBu. The nominal level of a Model
5110E (EBU) version module is 0 dBu with
a maximum level of +18 dBu.
Connections to the audio outputs are
made using a 5-position header connector
located on the Model 5110’s rear-most
circuit board. Refer to Figure 2 for details.
For details on appropriate mating connectors refer to Appendix A located at the end
of this document.
For connection to balanced inputs on
related equipment the signal + (high) and
signal – (low) connections should be used.
Pin 1, common/shield, may or may not
need to be connected as dictated by the
specific installation.
When interfacing the outputs to unbalanced inputs on associated equipment
connect only to the Model 5110’s signal
+ (high) and common/shield. Do not make
any connections to the Model 5110’s
– (low) terminals.
Pin Number Function
1 Common/Shield
2
3
4 + CH2
5
+ CH1
– CH1
– CH2
Figure 2. Analog Audio Outputs for Model 5110
Units with Serial Numbers 00201 and Later
(black-colored circuit boards)
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Studio Technologies, Inc. Page 7
Model 5110
Mic/Line Input Module
Digital Audio Output
The Model 5110’s two audio output channels are available in digital form by way
of a DIN 1.0/2.3-compliant receptacle.
This receptacle is located adjacent to
the analog audio output connector. This
is an AES3-compliant unbalanced 75 ohm
signal that will transport audio, when using
good-quality coaxial cable, several thousands of feet.
The digital audio output signal has a
sample rate of 48 kHz and a bit depth of
24. The nominal level of the digital audio output is –20 dBFS for Model 5110S
(SMPTE) modules and –18 dBFS for
Model 5110E (EBU) modules.
DC Input and Data Bus
A 4-position header is used to connect DC
power and a local RS-485 serial data bus
to the Model 5110. Two pins on the mating
connector are used to connect a source
of nominal 12 volts DC. The acceptable
range is 10 to 18 volts DC with a maximum
current of 300 milliamperes at 12 volts DC.
For remote control operation two pins on
the mating connector will implement the
data bus connection from a Studio Technologies’ Model 5190 Remote Access
Module.
The mating connector is compatible with
the AMP MTA-100 series of IDC receptacles. For 22 AWG wire the closed-end-style
receptacle is AMP 3-643813-4; the feedthrough-style receptacle, used for busing
connections, is AMP 3-644540-4. The body
color for both receptacles is red, following
the convention of the MTA-100 series for
compatibility with 22 AWG wire. Refer to
Appendix A of this guide for additional
connector details.
1. – DC (Common)
2. + DC (10-18 volts)
3.
+ Data (RS-485)
4. – Data (RS-485)
Figure 3. DC Input and Data Bus Connections
Mounting
The Model 5110 is intended for mounting into an installation-specific enclosure
or rack panel. Refer to Appendix B for the
unit’s dimensions and mounting screw
locations. Please contact the factory to
discuss mounting options.
Configuration
RS-485 Address
A data bus address must be configured
for applications that implement remote
control of Model 5110 functions. While up
to 16 Model 5100-Series modules can
“share” the RS-485 data bus, each module
must have a unique address. Selecting the
device’s address involves setting four configuration switches located on one side of
the module. The switches are a “piano key”
type with their up position being defined as
off and their down position defined as on.
Refer to Figure 4 for details.
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Model 5110
Mic/Line Input Module
Connecting Input Signals
Two 3-pin female XLR connectors are provided to interface signals with the Model
5110’s mic/line inputs. Signals with a wide
range of nominal levels can be successfully connected. For balanced signals pin 2
should be connected to signal + (high) and
pin 3 should be signal – (low). Pin 1 should
be connected to the cable shield.
Unbalanced signals can also be connected. In most cases signal + (high) should
be connected to pin 2 and common/shield
should be connected to both pins 1 and 3
of the 3-pin male XLR mating connector.
If this connection arrangement results in
hum or noise it’s possible that connecting
signal + (high) to pin 2 and signal common/shield only to pin 3 may be effective.
Figure 4. RS-485 Address Settings
Operation
Power Up
Upon 12 volt DC power being applied to
the Model 5110 the front-panel LEDs will
perform a “walk-through” test, with each
LED lighting briefly in sequence. Then the
LEDs will light in a pattern that represents
the version number of the firmware (embedded software) that is loaded into the
module. Upon completion, the module will
begin normal operation.
Input Sensitivity Selection
Two pushbutton switches are associated
with each mic/line input and are used to
adjust the sensitivity of the input circuitry.
In the line position the Model 5110 will
provide 0 dB of gain which results in unity
input-to-output performance. A connected
signal that has a level of 0 dBu will result
in a 0 dBu signal on the analog output. The
signal level of the digital output will depend
on the version of Model 5110 module. With
a Model 5110S module and an input level
of 0 dBu, the digital output level will be
–24 dBFS. With a Model 5110E module
the digital output level will be –18 dBFS.
Use the up and down pushbutton switches
to adjust the input sensitivity from the
choices of line (0 dB), 15, 30, and 45 dB.
In applications that use a Model 5190
Remote Access Module an expanded gain
range with a step size of 3 dB is possible.
Refer to the Remote Control Section later
in this guide for details.
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Model 5110
Mic/Line Input Module
The Model 5110 is not intended to precisely control the gain applied to an input signal. The goal is to amplify the input signal
such that it can be effectively transported
to the next piece of audio equipment in the
chain. Gain should be applied only so that
the signal can reach a level that ensures
a good signal-to-noise ratio is maintained
while minimizing the risk of signal overload. The Model 5110’s output signals will
be connected, either directly or via associated audio transport equipment, to inputs
on an audio console which will have precise control of the signal levels.
Level Meters
Associated with each mic/line input is a
7-segment LED level meter. These meters
are provided for use during input sensitivity
setting as well as being useful for general
signal monitoring. The labeling of the
meters refers to the level in reference to
the module’s analog reference level. For
the Model 5110S (SMPTE) version the
analog reference level is +4 dBu. For the
Model 5110E (EBU) version the analog
reference level is 0 dBu. So for example, a
signal that is sufficient to just cause the “6”
LED to light will represent an analog output
level that is 6 dB above analog nominal.
This will equate to +10 dBu for the Model
5110S and +6 dBu for the Model 5110E.
This will also represent digital output levels
of –14 dBFS for the Model 5110S and
–12 dBFS for the Model 5110E.
Phantom Power
To support high-performance microphones,
the Model 5110 can provide a source of
+48 volt DC phantom power. A pushbutton switch is associated with each
channel and allows phantom power on/off
control. For maximum flexibility phantom
power is available in all four input sensitivity settings (line, 15, 30, and 45 dB). While
phantom power would not typically be
used in the line setting it’s still available
for special applications.
Pushbutton Switch
“Lock Out”
To prevent unauthorized changes to the
Model 5110’s input sensitivity and phantom
power settings a pushbutton switch “lockout” function is provided. Simply press and
hold both +48V (phantom) pushbutton
switches for about two seconds to enable
(or disable) the pushbutton switch lock-out
function. Whenever the pushbutton switch
lock-out function is active the Data/Lock
LED, located on the bottom right side of
the front panel, will light.
Remote Control
A Model 5190 Remote Access Module
allows up to 16 Model 5110 Mic/Line Input
Modules, or a combination of up to 16
Model 5110 and other compatible 5100Series modules, to be monitored and
controlled using a standard web browser.
Whenever the Model 5190 is actively communicating with a Model 5110 the latter’s
Data/Lock LEDs will flash in response. The
Model 5190 will continually communicate
with each module about once per second.
A module identify function can be enabled
which will cause the front-panel LEDs on a
specific Model 5110 to flash on and off for
a few seconds. This is provided so that onsite personnel can confirm which specific
module is being remotely controlled.
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Page 10 Studio Technologies, Inc.
Model 5110
Mic/Line Input Module
The Model 5190’s GUI allows text naming
of the module and two mic/line input channels. These names are stored in the Model
5190 and help a user better understand a
remotely-located module installation or deployment. The on/off state of the phantom
power for each mic/line input channel can
be observed and changed if desired. The
state of the button lockout function can be
observed and modified.
Gain Range and Step Size
As previously discussed in this guide, us
ing the pushbutton switches on the front
panel allows the sensitivity of each mic/
line input to be selected from among four
values: 0, +15, +30, and +45 dB. Selections on the GUI associated with the Model
5190 allow much greater control over the
input sensitivity. This allows the gain step
size to be changed from the default 15 dB
to be 3 dB. And, in addition to more precise control, when the step size is selected
for 3 dB the gain range expands to 9 to
60 dB in 3 dB steps; of course 0 dB is still
available.
Changing the step size to 3 dB will impact
how the front-panel buttons perform and
the way in which the LEDs will display.
When the Model 5110 is configured for a
3 dB step size the pushbuttons switches,
as expected, will change the input sensitivity by 3 dB with each press. The exception
is when moving down from 9 dB or up
from 0 dB as there is no setting for 3 or
6 dB. (19 steps allow settings of
0, 9, 12, 15, etc. up to 60 dB.) When the
sensitivity of an input is set for 0, 15, 30,
or 45 dB their associated status LEDs will
light as expected. But if the sensitivity is
set to a value between these four exact
values two LEDs will light. For example,
if the sensitivity is set for 9 dB then both
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the 0 and the 15 LEDs will light. If the sensitivity is set for 36 dB then both the 30 and
45 LEDs will light. If the sensitivity is set for
45 dB or greater (45 to 60 dB in 3 dB steps)
the 45 LED will be lit. While this may be a
little confusing at first it does provide the
most information that the simple front panel
LEDs can provide.
Technical Notes
Firmware Version Display
After the Model 5110’s power-up sequence
has completed, the module’s LEDs are used
to automatically display the firmware (em
bedded software) version number. This is
useful when working with factory personnel
on application support and troubleshooting
situations. The seven level meter LEDs associated with channel 1 audio are used
to display the major version number with
a range of 1 through 7. The seven level
meter LEDs associated with channel 2
audio are used to display the minor version
number which ranges from 0 to 7. (No chan
nel 2 LEDs lit indicates minor version number 0.) The firmware version number will
display for approximately one second after
the power-up sequence has completed but
before normal operation will begin. Refer to
Figure 5 for a detailed view of the LEDs and
the corresponding firmware version numbering scheme.
Note that while it’s easy to determine which
firmware version is loaded into the Model
5110 a trip back to the factory is required
to update it. The 8-bit microcontroller that
provides the unit’s logic “horsepower” also
includes internal FLASH memory. This
nonvolatile memory is used to store the
operating firmware (embedded software).
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Model 5110 User Guide Issue 7, October 2014
Studio Technologies, Inc. Page 11
Model 5110
Mic/Line Input Module
Re-programming this memory requires using a specialized programming unit. While
not outrageous in price, it still costs in the
range of US$500. The programmer uses a
ribbon cable and socket to interface with a
6-pin “header” on one of the Model 5110’s
printed circuit board. And, as you would
guess, once connected reprogramming
takes only a matter of seconds. But unfortunately the programmer is not something
that would be found in a typical “field shop”
or repair facility.
Minor Version Number
Major Version Number (No LED lit indicates .0)
O O O O O O O O O O O O
1 2 3 4 5 6 7 .1 .2 .3 .4 .5 .6 .7
Figure 5. Detail of front panel showing the level meter LEDs
that display the firmware (embedded software) version. In this
example, the firmware version is 1.2.
Issue 7, October 2014 Model 5110 User Guide
Page 12 Studio Technologies, Inc.
Specifications
Model 5110
Mic/Line Input Module
Mic/Line Inputs: 2
Input Sensitivity, 15 dB Steps (Default):
selectable for line (0 dB), 15, 30 or 45 dB gain
Input Sensitivity, 3 dB Steps (Selected via GUI):
selectable for line (0 dB), 9 to 60 dB in 3 dB steps
Maximum Input Level: +24 dBu
Type: electronically balanced
Impedance: approximately 3 k ohms
CMRR: 61 dB at 60 Hz
Channel-to-Channel Crosstalk: <–106 dB at
10 kHz
Phantom Power: 48 volts DC, nominal, meets
IEC 61938 P48 standard
Digital Audio Output: 1 (2-channel)
Type: AES3, unbalanced, 75 ohms
Sample Rate/Bit Depth: 48 kHz/24
Frequency Response: ±0.2 dB, 20 Hz to 20 kHz
Dynamic Range (A Weighted): 112 dB, input
sensitivity set for Line (0 dB gain), 15 dB gain, or
30 dB gain; 103 dB at 45 dB gain
Distortion: 0.0008% (–101 dB) with output at
–1 dBFS, 22 Hz to 22 kHz, 30 dB gain
Nominal Output Level: –20 dBFS (Model 5110S);
–18 dBFS (Model 5110E)
Meters: 2, 7-segment LED, modified VU ballistics
Remote Control Capability: mic gain, phantom
power, pushbutton switch lock out. Requires remote
access module for implementation.
Connectors:
Mic/Line Inputs: 2, 3-pin female XLR, no latch
AES3 Digital Audio Output: 1, DIN 1.0/2.3-
compliant coaxial
Analog Audio Outputs: 1, 5-position male header.
Refer to Appendix A for mating connector details.
DC Input/Data: 1, 4-position male header. Refer
to Appendix A for mating connector details.
Power Requirement: 12 volts DC nominal,
300 milliamperes max; acceptable range 10-18
volts DC, 330 milliamperes max at 10 volts
Dimensions (Overall):
3.75 inches wide (9.5 cm)
1.69 inches high (4.3 cm)
2.30 inches deep (5.8 cm)
Mounting: requires custom implementation;
no mounting method provided. Refer to Appendix B
for details.
Weight: 0.2 pounds (91 g)
Analog Audio Outputs: 2
Type:
electronically balanced, capacitor-coupled,
intended to drive balanced loads of 2 k ohms or
greater
Nominal Level:
(Model 5110E)
Maximum Level: +24 dBu into 10 k ohms
Source Impedance: 200 ohms, nominal, differential
Frequency Response: ±0.5 dB, 20 Hz to 16 kHz;
–1.5 dB at 20 kHz)
Dynamic Range (A Weighted): 107 dB, input
sensitivity set for Line (0 dB gain), 15 dB gain, or
30 dB gain; 102 dB at 45 dB gain
Distortion:
+23 dBu, 22 Hz to 22 kHz, 30 dB gain)
Model 5110 User Guide Issue 7, October 2014
Studio Technologies, Inc. Page 13
+4 dBu (Model 5110S), 0 dBu
0.002% (–93 dB) with output at
Specifications and information contained in this
User Guide subject to change without notice.
Model 5110
Mic/Line Input Module
Appendix A–Interconnection Details
The required mating receptacles are from the TE Connectivity (formerly AMP) MTA-100
series of IDC (insulation displacement) connectors. This series was selected because of
its low-cost and wide range of offerings. Separate connectors are offered for compatibility
with 22, 24, 26, and 28 AWG (American Wire Gauge) insulated wire. The connector color
indicates its AWG-compatibility. Unfortunately, with flexibility can come some confusion. The
MTA-100 offers a number of different connectors that will work with the Model 5110’s analog audio outputs and DC input/data headers. Before obtaining receptacles it’s important to
determine two things: wire gauge and wiring arrangement.
Analog Audio Outputs
(one connector required)
• For 22 AWG wire this receptacle (red in color) is recommended:
TE Connectivity (AMP) 3-643813-5
Digi-Key part number A31109-ND (www.digikey.com)
Mouser part number 571-3-643813-5 (www.mouser.com)
• For 24 AWG wire this receptacle (white in color) is recommended:
TE Connectivity (AMP) 3-643814-5
Digi-Key part number A31020-N
Mouser part number 571-3-643814-5
DC Input/Data (one connector required)
• For 22 AWG wire this receptacle (red in color) is recommended:
TE Connectivity (AMP) 3-644540-4
Digi-Key part number A31122-ND
Mouser part number 571-3-644540-4
Tools for Connecting Wires to the Mating Receptacles
For applications where just a few Model 5100-Series modules are going to be installed a
manual IDC termination tool is recommended. While requiring a steady hand to achieve
reliable wire connections to the mating receptacles, the price, at less than US$40, is fairly
reasonable:
• “T Handle” termination hand tool:
TE Connectivity (AMP) 59803-1
Digi-Key part number A9982-ND
Mouser part number 571-598031
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Model 5110
Mic/Line Input Module
Appendix A–Interconnection Details, continued
Tools for Connecting Wires to the Mating Receptacles, continued
For applications where a larger number of Model 5100-Series modules are going to be
installed it’s worth considering a semi-automatic termination tool. The recommended tool
consists of a handle assembly and crimp die for MTA-100 receptacles. The total price for
both, approximately US$300 as of this writing, is steep but the performance that this tool
assembly provides is excellent. We feel that the time savings and reliability of the connections warrants the price when many terminations are going to be made:
• Handle Tool, Pistol Grip:
TE Connectivity (AMP) 58074-1
Digi-Key part number A2031-ND
Mouser part number 571-580741
• Crimp Head Die Assembly for MTA-100 Receptacles:
TE Connectivity (AMP) 58246-1
Digi-Key part number A1998-ND
Mouser part number 571-58246-1
Headers on the Printed Circuit Board
The actual part numbers of the header connectors that are soldered into the Model 5110’s
printed circuit board are provided in this section. But do not order these part numbers with
the intent of interconnecting signals with the Model 5110! We are providing these details
only so that interested technical personnel can have the full background on the Model
5110’s interconnect system. The appropriate mating receptacles are detailed in a previous
section of this Appendix.
• Analog Audio Outputs (one header):
TE Connectivity (AMP) 2-644486-5 (DO NOT ORDER THIS NUMBER!)
• DC Input/Data (one header):
TE Connectivity (AMP) 2-644486-4 (DO NOT ORDER THIS NUMBER!)
Model 5110 User Guide Issue 7, October 2014
Studio Technologies, Inc. Page 15
Model 5110
Mic/Line Input Module
Appendix B–Model 5110 Front Panel and Printed Circuit
Board (PCB) Dimensions
Issue 7, October 2014 Model 5110 User Guide
Page 16 Studio Technologies, Inc.
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