Studio Technologies 5152 V.1 - Manual (Page 23)

Model 5152 User Guide Issue 5, September 2013
Studio Technologies, Inc. Page 23
Model 5152
Video Generator/Audio Embedder Module
The SDI Input LED lights whenever a valid
SDI signal is connected to the coaxial
(BNC) or optical SDI input. (A configuration
choice selects whether the coaxial (BNC)
SDI input or optical SDI input is active.)
The Data LED will light whenever data ac-
tivity is taking place over the local RS-485
signal bus that is used to link the Model
5152 to a Studio Technologies’ Model 5190
Remote Access Module. The LED will flash
on and off each time data associated with
this specific Model 5152 is present. Not all
applications will include a connection to
the data bus so it’s certainly possible that
the Data LED may never flash except dur-
ing module power up.
The eight LEDs associated with the digital
audio inputs will light whenever signal is
present on their associated audio channels
and embedding of these signals into the
SDI signal is taking place. Details regard-
ing the functioning of these LEDs are
included later on in this section.
FPGA Board LEDs
Three LEDs are located on the back edge
of the FPGA printed circuit board and
serve as factory- and field-diagnostic aids.
Upon Model 5152 power up each LED will
light for several brief durations with no spe-
cific meaning associated with them. Then
the FPGA Status LED, located adjacent
to the DIP switches, will light and remain
lit. This indicates that the FPGA and MCU
boards are correctly communicating.
The LED located adjacent to the coaxial
SDI input’s BNC connector will light when-
ever that input has been configured 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 op-
erating 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 5152’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 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
input. When a signal that’s compatible with
the Model 5152 has been connected the
front-panel SDI Input LED will light. This