Studio Technologies 5152 User Manual V.3
Model 5152
Video Generator/Audio Embedder
User Guide
Issue 2, June 2013
This User Guide is applicable for
Model 5152 modules with the following order codes:
M5152, M5152-01, M5152-02, M5152-03X, and M5152-04X
with serial numbers 00151 and later
and firmware versions
MCU 1.4 (m5152.s19) and FPGA 1.2 (m5152.bit)
Module
Copyright © 2013 by Studio Technologies, Inc., all rights reserved
www.studio-tech.com
50185-0613, Issue 2
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Video Generator/Audio Embedder Module
Model 5152
Table of Contents
Introduction ................................................................... 5
Installation .................................................................... 9
Configuration ................................................................ 13
Operation ...................................................................... 16
Technical Notes ............................................................ 20
Specifications ............................................................... 26
Appendix A—Model 5152 Versions .............................. 27
Appendix B—DC Input/Data Interconnection Details ... 28
Appendix C—Model 5152 Front Panel and
Printed Circuit Board (PCB) Dimensions ...................... 30
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Module
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Model 5152
Introduction
The Model 5152 Video Generator/Audio
Embedder Module is a unique device
suited for a variety of custom broadcast,
post-production, industrial, and corporate
multimedia installations. As a member of
the extensive 5100-Series of modules,
the Model 5152’s compact size belies its
powerful video and audio feature set. At its
most basic, the Model 5152 provides the
ability to embed up to eight audio channels
(four AES3 digital audio “pairs”) into an
SMPTE®-compliant HD- or 3G-SDI video
“stream.” Unlike most stand-alone embedder products, Model 5152 embedding operation does not require an external source
of SDI to be connected. Advanced circuitry
within the Model 5152 supports the generation of a broadcast-standard SDI signal.
And rather than reproduce one fixed test
pattern, the Model 5152 has the capability
to store and output two custom high-definition video images. The images, one for
“720” and one for “1080,” are based on bitmap (.bmp) files that can be created using
a personal computer’s graphics program.
For convenience, the .bmp files are loaded
into the module’s nonvolatile memory via a
standard USB flash drive. The appropriate
“720” or “1080” image is automatically connected to the SDI output whenever an SDI
input signal is not present. This ensures
that an SDI output signal is always sent to
equipment further along the signal chain.
The Model 5152’s video signal generation
capability can be extremely useful, serv
ing as both a “keep-alive” signal as well as
allowing a detailed graphics image to be
displayed for identification purposes. To
clarify, when a valid HD- or 3G-SDI signal
is connected to the module’s input it will
pass through, unchanged, to the module’s
output. Only when an input is not present
will the custom image be generated. The
format and rate of the custom image will
match that of the previously-connected input signal. This “learning” capability allows
a module to automatically adapt to the SDI
format and rate utilized by a specific facility
or application.
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General Highlights
Applications for the Model 5152 include
sports broadcasting booth packages,
“POV” (point-of-view) remote-controlled
camera systems, stadium audio/video
interface (I/O) locations, and government/
corporate facilities. The module’s performance is completely “pro” with video and
audio quality, reliability, and installation
flexibility matching that of much largerscale equipment.
Figure 1. Model 5152 Video Generator/Audio Embedder Module front and rear views
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For operation the Model 5152 only requires
connection of a few signals. These consist
of SDI inputs and outputs, up to four unbalanced digital audio sources, an external
source of nominal 12 volts DC and, optionally, two wires associated with a local data
bus. Coaxial SDI input and output support
is standard. Optical input and output support is optional. The acceptable DC input
voltage range is 10 to 18, allowing a variety
of power sources to be utilized.
Standard connectors are used throughout
the Model 5152. Coaxial SDI input and
output signals interface using BNC connec
tors. Digital audio signals interface with the
Model 5152 by way of a 9-pin D-subminiature connector. An optional SFP fiber optic
module can be installed at the factory. The
module supports interconnection of singlemode optical fibers using LC plugs. The DC
power input and data bus connections use
a 4-position, 0.1-inch header. Low-cost IDC
(insulation-displacement connector) mating
sockets allow simple interconnection with a
variety of wire gauges. Twelve status LEDs
offer users both performance confidence
and troubleshooting assistance.
The Model 5152 is compatible with the
Studio Technologies’ Model 5190 Remote
Access Module. This will allow remote
monitoring and control, via an Ethernet
connection, of key module operating and
status parameters. A local RS-485 data bus
allows up to 16 of the 5100-Series modules
to be connected to a Model 5190.
Model 5152 Video Generator/Audio
Embedder Modules do not include a
mounting enclosure or chassis. They are
intended for mounting in custom 19-inch
rack panels, equipment boxes, broadcast
furniture, “NEMA” I/O boxes, or other specialized enclosures. It is expected that integration firms will create applications that
use Model 5152 modules as part of complete broadcast, production, corporate,
and government solutions. Sophisticated
users will be able to easily create “one-off”
solutions to solve unique challenges.
SDI Inputs and SDI Outputs
High-definition SMPTE-compatible SDI signals with data rates of 1.485 Gb/s nominal
(HD-SDI) and 2.97 Gb/s nominal (3G-SDI)
can be connected. Virtually all of the commonly-utilized “720” and “1080” formats are
supported. Note, however, that standarddefinition SD-SDI (270 Mb/s nominal) signals are not supported. It was felt that users
looking for advanced solutions such as provided by the Model 5152 will not typically be
working with SD signals. But be assured that
many HD-SDI and 3G-SDI formats and rates
are supported, allowing the Model 5152 to
be appropriate for worldwide use.
Coaxial (BNC) Support
Using standard BNC connectors, the Model
5152 supports one coaxial SDI input and
one coaxial SDI output.
Optical Fiber Support
Several switches are accessible during
installation and allow configuration of key
operating parameters. Updating the Model
5152’s firmware (embedded software) is
possible using a USB flash drive loaded
with personal-computer-compatible files.
Factory-implemented options allow the
Model 5152 to support SDI signals that are
transported using single-mode optical fibers.
Using video SFP modules a range of opti
cal input, output, and transceiver capabilities can be supported. For a list of available
Model 5152 versions refer to Appendix A.
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Video Generator/Audio Embedder Module
Model 5152
The standard 1310 nanometer optical
transmit wavelength is available, as are
the more-esoteric CWDM wavelengths.
When a Model 5152 has been provided
with an optical SDI input from the factory
a configuration choice selects whether
it, or the coaxial (BNC) input, is active. A
module that includes an optical SDI output
will always have its optical output active,
transporting the same SDI data as that
present on the coaxial (BNC) output.
Video Generation Capability
During typical operation an HD- or 3G-SDI
signal is connected to the Model 5152’s
SDI input. It’s then “passed through” to the
module’s SDI output and on to the next
part of the signal chain. But what happens
when the external SDI signal is not present? That’s when an important Model 5152
feature becomes active. When a signal is
not present on the SDI input the module
will generate a high-definition (HD or 3G)
image that will serve as a “slate,” ID, or
“SDI-active” signal. This SDI signal also
allows the audio embedding function to
remain active.
From the factory two bitmap (.bmp) image
files are stored in nonvolatile memory. One
file is used for generating the image for
1280 x 720 pixel formats and the other for
1920 x 1080 pixel formats. But alternate
bitmap image files can be created and
stored in the Model 5152. These alternate
images can supply site- or applicationspecific information useful to “downstream”
users. Using a personal-computer graph
ics program, such as Microsoft® Paint® or
Adobe® Photoshop®, generating custom
images and storing them in the appropriate
bitmap format is a simple matter.
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A USB port, located on the Model 5152’s
front panel, allows direct connection of
a standard USB flash drive. If the Model
5152’s firmware (embedded software)
recognizes compatible FAT32 bitmap
(.bmp) files on the USB flash drive they
will be automatically loaded into nonvolatile memory. The USB flash drive can then
be removed with the custom images safely
stored within the Model 5152.
One subtle but important feature has
been included for user situations where
the Model 5152’s output is used in onair broadcast applications. When a sig
nal is removed from the SDI input, the
Model 5152 will output a few seconds
of solid-gray color before the stored im
age appears. This will help to ensure that
technicians or operators will be visually
“warned” that the module’s input signal
has been lost and that the custom image
will soon be taking its place. It’s hoped that
the gray video image will be innocuous
for on-air viewers yet different enough
to encourage operators to switch the
module’s output away from being “on air.”
A unique feature of the Model 5152 is its
ability to automatically adapt to the format
and rate of a connected SDI signal. This
allows the custom image to be output at
the same format and rate as that used by
the associated network, local facility, or
event. If, for example, a connected input
is “1080i/59.94” then the Model 5152 will
automatically detect and store that information. From then on whenever an SDI
input signal is not present the internal
generator will output the custom image
at “1080i/59.94.” Changing the format and
rate of the generator only requires connection of an SDI signal with the desired
characteristics. (A minimum required
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connection time helps to ensure that an
accidental format and rate change won’t
occur.) However, there may be situations
where maintaining the format and rate of
the internally-generated signal is important.
To support this condition one configuration
choice allows the automatic format/rate
selection function to be disabled.
Audio Embedding
The Model 5152 allows four stereo digital
audio signals to be embedded into the SDI
output signal. The eight channels of audio will always be embedded, whether or
not a source is connected to the module’s
SDI input. Eight configuration choices allow flexibility as to where the digital audio
inputs will be embedded into the SDI output
signal. A range of applications can be supported by taking advantage of the module’s
ability to embed into groups 1, 2, 3, or 4.
The four digital audio inputs are 75 ohms,
unbalanced, and follow the AES3 standard.
They are intended for use with broadcaststandard “24-bit, 48 kHz” digital audio
signals. Advanced sample-rate-converter
circuitry ensures excellent performance
with signals that are asynchronous with
each other and the Model 5152’s internal
timing.
The Model 5152’s digital audio inputs are
directly compatible with the digital audio
output provided by the Studio Technologies’
Model 5110 Mic/Line Input Module. Up to
four Model 5110 modules can be directly
connected, supporting eight mic/line inputs.
A major Model 5152 feature is its ability
to embed audio into the SDI output signal whether or not an SDI input signal is
present. If a valid SDI signal is present on
the input then the Model 5152 will embed
audio data into that data stream. If an SDI
signal is not present on the SDI input,
embedding will continue but now will be
associated with the custom image. In this
way embedded-audio transport will always
be supported.
When audio is being embedded into an
externally-connected SDI signal it will replace any incoming embedded audio that’s
already present. However, any embedded
audio present on groups that are not being
embedded by the Model 5152 will correctly
“pass through” to the SDI output. This is
important when SDI input signals that
already include embedded audio, such as
from portable ENG-type cameras, are connected. Such devices typically embed two
or four microphone audio channels into
group 1, which need to pass through the
Model 5152 without interference.
It’s important to note that when changing
from an external SDI signal to the internal
generator (or vice-versa) the SDI output,
including embedded audio, will momentarily lose timing and some video and audio
“glitches” may be present. For the intended
Model 5152 applications this should
not prove to be an issue but is worth
mentioning.
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Video Generator/Audio Embedder Module
Model 5152
Installation
Integration of the Model 5152 into a selected application should prove quite simple,
only connecting SDI input and output signals, digital audio sources, and DC power
is required. Some applications will also require connection to the module’s data bus.
The coaxial (BNC) input and output connections are compatible with most HD-SDI
and 3G-SDI signals. If the specific Model
5152 being installed also includes optical support one or two single-mode fiber
interconnections will be made. The fiber
connections utilize miniature LC plugs.
Up to four AES3-compliant unbalanced
digital audio signals can be connected
by way of a 9-pin D-subminiature (DE-9)
connector. Each of these four digital audio
signals supports two channels of audio.
The DC power source is nominal 12 volts
with an acceptable range of 10 to 18 volts.
It’s possible that the module will be part
of a local data bus that’s associated with a
Studio Technologies’ Model 5190 Remote
Access Module. If so, two additional wires
are required to connect the module to
the data bus. After the connections have
been completed the module can then be
secured into the designated mounting
location.
Coaxial (BNC) SDI Output
The Model 5152 provides an SDI output
that utilizes a broadcast-standard BNC
socket. This output is referred to as the coaxial (BNC) SDI output. Refer to Figure 2
for a detailed view of the connector’s loca
tion on the rear of the module. The coaxial
(BNC) output, depending on operating
conditions, will be either an SMPTEcompliant HD (1.485 Gb/s nominal) or 3G
(2.97 Gb/s nominal) SDI signal. The exact
format/rate combinations supported by the
Model 5152 are listed in the Specifications
section of this guide.
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Figure 2. Detailed rear view of the Model 5152 Video Generator/Audio Embedder Module showing the
MCU and FPGA boards
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Model 5152
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Coaxial (BNC) SDI Input
An SDI source can be connected to
the Model 5152 by way of a broadcaststandard BNC connector. This is referred
to as the coaxial (BNC) SDI input. Refer
to Figure 2 for a detailed view of the connector’s location on the rear of the module.
The coaxial (BNC) input is compatible
with SMPTE-compliant HD (1.485 Gb/s
nominal) and 3G (2.97 Gb/s nominal) SDI
signals. It is not compatible with SD-SDI
(standard definition 270 Mb/s) signals. The
exact format/rate combinations supported
by the Model 5152 are listed in the Specifications section of this guide.
A configuration switch setting must be
made for the coaxial (BNC) SDI input to be
active. Refer to the Configuration section of
this guide for details.
the 18 CWDM wavelengths. (For broadcast applications, the common first-utilized
CWDM wavelengths are often 1490 and
1550 nanometers.)
An LC plug terminated on a single-mode
optical fiber is used to mate with the SFP’s
optical output. When referenced to the front
of an SFP transceiver or output-only SFP
module the optical output is located on the
SFP module’s left side. Refer to Figure 2
for a detailed view. When terminating the
LC plug with the socket on the SFP module
be certain that the plastic plug’s locking
tab is fully engaged into the slot of the SFP
module. This will help prevent the LC plug
from becoming disconnected due to physical stress or vibration on the fiber. Also
ensure that the end (“face”) of the plug’s
ferrule has been cleaned using appropriate
methods.
Optical SDI Output
This section applies only when the specific
Model 5152 module being installed was
configured at the factory to provide an optical output. A video SFP (small form-factor
pluggable) optical module is used to provide the optical SDI output. A range of SFP
modules can be installed in the “cage” at
the back of the Model 5152. These include
a transceiver module that has both an
optical output (transmitter) and an optical
input (receiver), as well as an output-only
(transmitter) module. The technical char
acteristics of the optical output will depend
on the specific module installed. The mostcommon transceiver or output-only SFP
module used in the Model 5152 will have
an FP (Fabry-Perot) laser emitting “light” at
a wavelength of 1310 nanometers. Other
modules can utilize a higher-performance
DFB (distributed feedback) laser that is
manufactured to produce light at one of
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Note that as of the time this user guide
was written the Model 5152 supports only
single-mode optical cable. Contact Studio
Technologies should support for multimode fiber be required.
The Model 5152 module should remain
without power whenever its optical output
has not been terminated. This ensures that
the optical energy will not project into free
space and possibly into the eyes of installation personnel. The optical output power
of video SFP modules selected by Studio
Technologies adheres to the class 1 laser
standard. As such, they do not emit sufficient power to be considered hazardous.
But best safety practices require that the
optical output port and connected fiber end
not be directly viewed.
No configuration switches or other settings
are required to activate the optical output. It
is always active and will contain the same
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