Studio Technologies 5152 V.2 - Manual (Page 7)

Model 5152 User Guide Issue 4, September 2013
Studio Technologies, Inc. Page 7
Model 5152
Video Generator/Audio Embedder Module
those provided by the Model 5152 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 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
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 optical input, output, and transceiver
capabilities can be supported. For a list
of available Model 5152 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 5152 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 5152’s
selected SDI input. It’s then “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 5152’s internal SDI generator be-
comes 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. 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 application-
specific 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.
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 nonvola-
tile 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 broadcast applications
which use the Model 5152’s SDI output(s)
“on-air.” When an SDI signal is removed
from the module’s selected 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