Studio Technologies 5152 V.3 - Manual (Page 17)

Model 5152 User Guide Issue 2, June 2013
Studio Technologies, Inc. Page 17
Model 5152
Video Generator/Audio Embedder Module
It will not light if a valid optical signal is con-
nected but the SDI input configuration switch
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 has loaded
its firmware and is operating normally. This
LED is provided only for factory trouble-
shooting use.
Initial SDI Output
After the power-up sequence has been com-
pleted the module’s SDI output will become
active. (This will be both the coaxial (BNC)
output and, if present, the optical SDI out-
put.) If a valid signal is connected to the SDI
input it will be routed to the SDI output. If a
signal is not connected to the SDI input the
internal SDI generator will be supplying sig-
nal to the SDI output. In the latter case, after
the entire Model 5152 power-up sequence
has taken place (about seven seconds) a
solid-gray image will be output for approxi-
mately seven seconds. Then either the cus-
tom “720” or “1080” image will be displayed.
SDI Input and SDI Output
Depending on the exact Model 5152 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 in-
put. When a signal that’s compatible with the
Model 5152 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 5152 always provides an ac-
tive SDI signal on the coaxial (BNC) output.
Some Model 5152 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.
As previously mentioned, if a valid SDI sig-
nal is connected to the active (configured)
SDI input it will be routed to the coaxial
(BNC) output and, if present, optical SDI
output. Audio input signals will be embed-
ded following the selected configuration.
Additional details regarding audio embed-
ding are provided in later paragraphs of this
guide.
If an SDI signal is not present on the active
SDI input the custom image will be present
on the coaxial (BNC) output and, if present,
optical output. Depending on the stored for-
mat 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 gener-
ates one of two fixed images. The two im-
ages, one “720” and one “1080,” are stored
in nonvolatile memory within the Model
5152. 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. This 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