Studio Technologies 5154 - Manual (Page 20)

Issue 3, September 2013 Model 5154 User Guide
Page 20 Studio Technologies, Inc.
Model 5154
Video Generator/Audio De-Embedder Module
The LED located adjacent to the coaxial
SDI input’s BNC connector will light when-
ever that input has been selected to be
active and a valid SDI signal is connected.
It will not light if a valid SDI signal is con-
nected but the SDI input configuration is
not set to activate the coaxial (BNC) input.
The LED located adjacent to the “cage”
that holds the SFP module will light if the
optical SDI input has been selected and a
valid SDI optical signal is connected. It will
not light if a valid optical signal is connect-
ed but the SDI input configuration is not
set to activate the optical input.
A fourth LED is located near the front of
the FPGA board. Called the FPGA Done
LED, it lights whenever the logic device
(FPGA) has loaded its firmware and is
operating normally. This LED is provided
only for factory troubleshooting use.
Initial SDI Output
After the power-up sequence has been
completed the module’s SDI output will
become active. (This will be both the coax-
ial (BNC) output and, if present, the optical
SDI output.) If a valid signal is connected
to the selected SDI input it will be routed to
the SDI output. If a signal is not connected
to the selected SDI input the internal SDI
generator will supply a signal to the SDI
output. In the latter case, what occurs after
the Model 5154’s power-up sequence has
taken place (taking about seven seconds)
depends on the module’s configuration.
A solid-gray image may be output for up
to seven seconds followed by the stored
“720” or “1080” image. Or, if the solid-gray
image has been disabled the stored image
will immediately be present.
SDI Input and SDI Output
Depending on the exact Model 5154 ver-
sion that has been installed and how it was
configured an SDI signal can be connected
to the coaxial (BNC) input or the optical
input. When a signal that’s compatible with
the Model 5154 has been connected the
front-panel SDI Input LED will light. This
indicates that the signal is being routed
to the SDI output and the internal SDI
generator is not active. SDI signals that
comply with most HD (1.485 Gb/s nominal)
and 3G (2.97 Gb/s nominal) standards
are compatible. Refer to the Specifications
section of this guide for a list of the sup-
ported standards.
The Model 5154 always provides an active
SDI signal on the coaxial (BNC) output.
Some Model 5154 versions also provide
an optical output. This is accomplished at
the factory by installing one of a variety of
available SFP optical modules in the back-
panel SFP “cage.” If an optical output is
present it will always be active and provide
an identical copy to the signal present on
the coaxial (BNC) output.
If a valid SDI signal is not connected to the
selected SDI input the stored image will
be present on the coaxial (BNC) output
and, if present, optical output. Depending
on the stored format and rate values, the
output will be either a 1280 x 720 pixel
(“720”) or 1920 x 1080 pixel (“1080”) fixed
image.
Stored Images
When a valid signal is not connected to the
selected SDI input, the module generates
one of two fixed images. The two images,
one “720” and one “1080,” are stored in
nonvolatile memory within the Model 5154.