Studio Technologies 5152 V.1 - Manual (Page 7)

Model 5152 User Guide Issue 5, 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 mod-
ule that includes an optical SDI output will
always have its optical output active, trans-
porting 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 se-
lected 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 hap-
pens when the external SDI signal is not
present? That’s when the Model 5152’s in-
ternal 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.
This SDI signal also allows the audio em-
bedding 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 configurable
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 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 opera-
tors will be visually “warned” that the mod-
ule’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