Studio Technologies 5150 V.1 - Manual (Page 20)

Issue 5, March 2014 Model 5150 User Guide
Page 20 Studio Technologies, Inc.
Model 5150
Video Generator Module
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 5150’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 5150 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 5150 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
supported standards.
The Model 5150 always provides an ac-
tive SDI signal on the coaxial (BNC) output.
Some Model 5150 versions also provide an
optical output. This is accomplished at the
factory by installing one of a variety of avail-
able SFP optical modules in the back-panel
SFP “cage.” If an optical output is present it
will always be active and provide an identi-
cal 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
5150. From the factory two images are pre-
loaded. The two are quite different from one
another with each having a unique photo
background and overlaid text. The overlaid
text provides support details on how alter-
nate custom images can be created.
It’s expected that these pre-loaded images
will be replaced with application-specific
images. They can be easily created and
what they consist of is limited only by one’s
imagination. Refer to the Technical Notes
section of this guide for details.
Transitions between External
and Internal SDI Signals
This paragraph applies when the Model
5150 has been configured for normal SDI