Studio Technologies 5154 User Manual
Model 5154
Video Generator/Audio De-Embedder Module
User Guide
Issue 3, September 2013
This User Guide is applicable for
Model 5154 modules with the following order codes:
M5154, M5154-05, M5154-02, M5154-03X, and M5154-04X
with serial numbers 00151 and later
and firmware versions
MCU 2.1 and later (m5154.s19) and FPGA 2.2 and later (m5154.bit)
Copyright © 2013 by Studio Technologies, Inc., all rights reserved
www.studio-tech.com
50186-0913, Issue 3
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Video Generator/Audio De-Embedder Module
Model 5154
Table of Contents
Introduction ................................................................... 5
Installation .................................................................... 9
Configuration ................................................................ 13
Operation ...................................................................... 19
Technical Notes ............................................................ 23
Specifications ............................................................... 29
Appendix A—Model 5154 Versions .............................. 30
Appendix B—DC Input/Data Interconnection Details ... 31
Appendix C—Model 5154 Front Panel and
Printed Circuit Board (PCB) Dimensions ...................... 33
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Issue 3, September 2013 Model 5154 User Guide
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Video Generator/Audio De-Embedder Module
Model 5154
Introduction
The Model 5154 Video Generator/Audio
De-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 5100-Series of modules, the Model
5154’s compact size belies its powerful
video and audio feature set. At its most
basic, the Model 5154 provides the ability
to de-embed up to eight audio channels
(four AES3 digital audio “pairs”) from a
SMPTE®-compliant HD- or 3G-SDI video
“stream.” The SDI source, connected either
by way of a coaxial (BNC) or optional fiber
optical input, will always be routed to the
coaxial (BNC) and optional fiber optic
outputs. Should a source not be connected
to the SDI input, advanced circuitry within
the Model 5154 will automatically generate
a broadcast-standard high-definition SDI
signal. This ensures that devices “downstream” from the Model 5154 will always
be presented with an active SDI signal.
Rather than reproducing a fixed test pattern, the Model 5154 has the capability to
store and output two custom 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 stored
in 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 5154’s video signal generation
capability can be extremely useful, serving as both a “keep-alive” signal as well as
allowing a detailed graphics image to be
displayed for identification purposes. When
a valid HD- or 3G-SDI signal is connected to
the module’s input it will have eight of its audio channels (four AES3 digital audio pairs)
de-embedded, as well as passing through,
unchanged, to the module’s SDI output. Only
when an input is not present will the stored
image be generated. (Note, however, that no
audio signals will be generated.) The format
and rate of the stored image will match that
of the previously-connected SDI input signal. This “learning” capability allows a Model
5154 to automatically adapt to the SDI format and rate utilized by a specific facility or
application.
An alternate operating mode can be selected, allowing the Model 5154 to serve as
a dedicated video signal generator. In this
mode an SDI signal connected to the module
will serve as an external timing reference.
Figure 1. Model 5154 Video Generator/Audio De-Embedder Module front and rear views
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Video Generator/Audio De-Embedder Module
Model 5154
General Highlights
Applications for the Model 5154 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.
For operation the Model 5154 only requires
connection of a few signals. These consist
of SDI inputs and outputs, four unbalanced
digital audio outputs, an external source
of nominal 12 volts DC and, optionally, two
wires associated with a local RS-485 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.
The Model 5154 uses standard connectors
for fast, convenient interfacing. Coaxial SDI
input and output signals use BNC connectors. An optional video SFP fiber optic
module can be installed at the factory.
The module supports interconnection of
single-mode optical fibers using LC plugs.
Digital audio output signals interface with
the Model 5154 by way of a 9-pin D-subminiature connector. The DC power input
and data bus connections use a 4-position,
0.1-inch header. Low-cost IDC (insulationdisplacement 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 5154 is compatible with the
Studio Technologies’ Model 5190 Remote
Access Module. This will allow remote configuration, 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.
Several Model 5154 operating parameters
can be configured to meet the needs of
specific applications. A USB flash drive
along with several DIP switches, are used
to convey the configuration to the module.
A simple text file that reflects the desired
configuration is created and stored on the
USB flash drive. When inserted into the
appropriate socket on the Model 5154 the
file is read and stored. Updating the Model
5154’s firmware (embedded software)
is also possible using a USB flash drive
loaded with factory-supplied files.
Model 5154 Video Generator/Audio DeEmbedder 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
5154 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 (3GSDI) can be connected. Virtually all of the
commonly-utilized “720” and “1080” formats
are supported. Standard-definition SDI
signals with a data rate of 270 Mb/s nominal (SD-SDI) are not supported. It was felt
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Video Generator/Audio De-Embedder Module
Model 5154
that users looking for advanced solutions
such as those provided by the Model 5154
will not typically be working with SD-SDI
signals. But be assured that many HD-SDI
and 3G-SDI formats and rates are supported, allowing the Model 5154 to be
appropriate for worldwide use.
Coaxial (BNC) Support
Using standard BNC connectors, the
Model 5154 supports one coaxial SDI
input and one coaxial SDI output.
Optical Fiber Support
Factory-implemented options allow the
Model 5154 to support SDI signals that
are transported using single-mode optical
fibers. Using video SFP modules a range
of optical input, output, and transceiver
capabilities can be supported. For a list
of available Model 5154 versions refer to
Appendix A.
The standard 1310 nanometer optical
transmit wavelength is available, as are
the more-esoteric CWDM wavelengths. 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. When
a Model 5154 has been provided with an
optical SDI input a configuration choice
selects whether it, or the coaxial (BNC)
input, is active.
Video Generation Capability
During typical operation an HD- or 3G-SDI
signal is connected to the Model 5154’s
selected SDI input. Audio channels are deembedded from the SDI signal without removing or changing the audio group data.
The SDI source is also “passed through”
to the module’s SDI output(s) and on to
the next part of the signal chain. But what
happens when the external SDI signal is
not present? That’s when the Model 5154’s
internal SDI generator becomes active.
When a signal is not present on the selected SDI input the module will generate
a high-definition (HD- or 3G-SDI) image
that will serve as a “slate,” ID, or “SDI-active” signal. No audio data will be present
in the generated SDI signal as there is no
embedding function provided. The four
digital audio outputs will remain active but
no actual audio signal will be present. (The
audio data will be all “0”s because there is
no audio data being de-embedded.)
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 5154. These alternate
images can supply site- or applicationspecific information useful to “downstream”
users. Using a personal-computer graphics program, such as Microsoft® Paint® or
Adobe® Photoshop®, generating custom
images and storing them in the appropriate
bitmap format is a simple matter.
A USB port, located on the Model 5154’s
front panel, allows direct connection of
a standard USB flash drive. If the Model
5154’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 5154.
One subtle but important configurable
feature has been included for broadcast
applications which use the Model 5154’s
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Video Generator/Audio De-Embedder
Model 5154
Module
SDI output(s) “on-air.” When an SDI signal
is removed from the module’s selected
SDI input, the Model 5154 can be configured to output a few seconds of solid-gray
color before the stored image 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 stored image will soon be taking its place. It’s hoped that the solid-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 5154 is its
ability to automatically adapt to the format
and rate of a connected SDI signal. This
allows the stored 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 5154 will
automatically detect and store that information. From then on whenever an SDI
input signal is not present the internal
generator will output the stored 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
connection time helps to ensure that an
accidental format/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.
Video Generation with External
Reference
Some applications may benefit from the
Model 5154 serving as a full-time stand
alone video generator. A configuration
choice helps to support such applications
by using the selected SDI input only as
a timing reference. Unlike typical operation, when selecting this operating mode a
signal connected to the selected SDI input
would not pass through to the SDI. Its rate,
format, and specific timing characteristics
would be used as a reference for the internally-generated video output. Note that
bi-level or tri-level analog timing reference
signals are not supported. Only a HD-SDI
or 3G-SDI signal can serve as a reference
signal for the Model 5154.
Audio De-Embedding
The Model 5154 allows four stereo digital
audio signals (eight audio channels) to be
de-embedded from the input SDI signal.
Eight configuration choices allow flexibil
ity as to how the audio groups present in
the SDI source will be de-embedded and
routed to the four digital audio outputs.
A range of applications can be supported
by taking advantage of the module’s ability
to de-embed from groups 1, 2, 3, and 4.
The four digital audio outputs are unbal
anced, 75 ohms, and follow the AES3
standard. They comply with broadcaststandard “24-bit, 48 kHz” digital audio
signals. They follow the internal timing
of the Model 5154 and cannot be locked
to an external reference.
The Model 5154’s digital audio outputs
are directly compatible with the digital
audio inputs on several 5100-Series
modules from Studio Technologies. These
include the Model 5121 Line/IFB Output
Module and the Model 5140 Intercom
Interface Module.
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Model 5154
When audio is being de-embedded from
the SDI input signal the de-embedding
process will not change any incoming
audio group data. All embedded audio
signals present on the SDI input will “pass
through” unaltered to the SDI output. This
is important as “downstream” equipment
will often also need access to the audio
content.
It’s important to note that when changing
from an external SDI signal to the internal
generator (or vice-versa) the SDI output
will momentarily lose timing and some
video and audio “glitches” may be present.
For the intended Model 5154 applications
this should not prove to be an issue but is
worth mentioning.
Installation
Integration of the Model 5154 into a selected application should prove quite simple,
only connecting SDI input and output signals, digital audio outputs, as well as
DC power is required. The coaxial (BNC)
input and output connections are compatible with most HD-SDI and 3G-SDI signals.
If the specific Model 5154 being installed
also includes optical support one or two
single-mode fiber interconnections will be
made. The fiber connections utilize miniature LC plugs.
Four AES3-compliant unbalanced digital
audio outputs are connected by way of a
9-pin D-subminiature (DE-9) connector.
Each of these four digital audio signals
supports two channels of audio.
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 all the connections have been completed the module
can then be secured into the designated
mounting location.
Coaxial (BNC) SDI Output
The Model 5154 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 location on the rear of the module. The coaxial
(BNC) output, depending on operating
conditions, will be either a SMPTEcompliant HD-SDI (1.485 Gb/s nominal)
or a 3G-SDI (2.97 Gb/s nominal) signal.
The exact format/rate combinations supported by the Model 5154 are listed in the
Specifications section of this guide.
Coaxial (BNC) SDI Input
An SDI source can be connected to
the Model 5154 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 standard
definition SD-SDI (270 Mb/s nominal) signals. The exact format/rate combinations
supported by the Model 5154 are listed in
the Specifications section of this guide.
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 RS-485 data bus that’s associated
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A configuration setting must be made for
the coaxial (BNC) SDI input to be active.
Refer to the Configuration section of this
guide for details.
Video Generator/Audio De-Embedder Module
Model 5154
Optical SDI Output
This section applies only when the specific
Model 5154 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 5154. These include
transceiver modules that have both an
optical output (transmitter) and an optical input (receiver), as well as output-only
(transmitter) modules. The technical characteristics of the optical output will depend
on the specific module installed. The most
common transceiver or output-only SFP
module used in the Model 5154 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
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. To indicate
the optical output port a graphic arrow icon
pointing “out” may be present on the top of
the module. 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.
Note that as of the time this user guide
was written the Model 5154 supports only
single-mode optical cable. Contact Studio
Figure 2. Detailed rear view of the Model 5154 Video Generator/Audio De-Embedder Module showing
the MCU and FPGA boards
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