Studio Technologies 5150 V.2 - Manual (Page 21)

Model 5150 User Guide Issue 3, September 2013
Studio Technologies, Inc. Page 21
Model 5150
Video Generator Module
up to two seconds of interruption will
occur during transitions but typically it will
be considerably shorter.
Full-Time Video Generation
A configuration selection allows the Model
5150 to act as a full-time video generator.
In this case the selected SDI input will only
be used as an external timing reference.
The front-panel SDI Input LED will light
whenever a valid signal is connected to
the selected SDI input. But the SDI input
source will only serve as a timing refer-
ence. Its video and related data (e.g., em-
bedded audio) will not pass through to the
SDI output(s). The custom video image will
always be present on the SDI output(s).
Output Format and Rate
When a valid signal is connected to the
selected SDI input it will be routed to the
SDI output at the identical format and rate
of the source. When the SDI input is no
longer present the internally-generated
signal will become active and be routed to
the SDI output. The format and rate of the
internally-generated SDI signal will depend
on parameters that are stored within the
Model 5150. Whether these parameters
can change depends on the configuration
of the module’s SDI output image format/
rate mode. Typically, the mode will be set
for Auto Select which allows the Model
5150 to revise its parameters by following
the format and rate of the connected SDI
signal. This ensures that the Model 5150
can generate an SDI signal that matches
the requirements of a facility or event.
For the module to “learn” a new format
and rate simply requires the momentary
connection of an SDI signal that has the
desired format and rate. As long as the
signal is present on the selected SDI input
for a minimum of five seconds the Model
5150 will store the “new” format and rate
parameters in nonvolatile memory. The
module will then use those parameters
whenever the internal generator is active.
The only caveat for the module to “learn” a
new format/rate combination is that it must
be a compatible combination. Refer to the
Specifications section of this guide for a
complete list.
There are some applications that will bene-
fit from the internally-generated SDI output
signal always having a specific format and
rate. In this case the SDI output image
format/rate mode can be set for Locked.
No matter what the format and rate of a
connected SDI signal, the stored param-
eters will not change. Changing the stored
parameters would require the format/rate
mode to be changed to Auto Select, an
SDI signal with the desired format and
rate be connected for a minimum of five
seconds, and then the format/rate mode
changed back to Locked.
Moving Image Overlay
The Model 5150 has the ability to overlay
a moving image on top of the stored “720”
and “1080” images. A configuration setting
selects whether the moving image overlay
will be active. The moving image, a box
that’s red in color, slowly moves around
and on top of whatever stored image is
present on the SDI output. The color, size,
and rate of motion of the “box” are fixed in
the FPGA’s firmware (embedded software)
and can’t be altered.
The moving image is provided specifically
so that users who are “downstream” from
the Model 5150’s SDI output are assured
that the “720” or “1080” image they are