Studio Technologies 5152 V.1 - Manual (Page 22)

Issue 5, September 2013 Model 5152 User Guide
Page 22 Studio Technologies, Inc.
Model 5152
Video Generator/Audio Embedder Module
GPI= selects the status of the GPI (gen-
eral-purpose input) function. DISABLED
selects that the function is not active.
EMBEDOFF selects that the GPI can be
used to control the on/off status of the
Model 5152’s embedder function. The
function is active low. When the GPI is not
pulled low (switch or contact closure open
(not shorted)) the embedder function is ac-
tive. When the GPI is low (switch or contact
closure closed (shorted)) the embedder
function is disabled. (Of course, if embed-
ding has been disabled in the configuration
(EMBED=NN), the GPI function would not
impact embedder operation.) Note that if
the hardware version of this specific Model
5152 does not support the GPI function
this text line can be part of the file but will
not be recognized.
GPO= selects the status of the GPO (gen-
eral-purpose output) function. Five choices
are available.
DISABLED selects the
GPO function to be inactive. It will remain
logic low and not change state. SDIVALID
selects that the GPO will be high when a
valid SDI signal is connected to the se-
lected SDI input (coaxial (BNC) or optical).
SDINOTVALID selects that the GPO will
be high when a valid SDI signal is not
connected to the selected SDI input (co-
axial (BNC) or optical); the GPO will be
low when a valid SDI signal is connected.
EMBEDON selects that the GPO will be
high when the embedder function is active.
EMBEDOFF selects that the GPO will be
high when the embedder function is not
active; the GPO will be low when the em-
bedder is active. Note that if the hardware
version of this specific Model 5152 does
not support the GPO function this text
line can be part of the file but will not be
recognized.
Operation
Power Up
Upon 12 volt DC power being applied to
the Model 5152 the twelve front-panel
LEDs will perform a “walk-through” test,
with each LED lighting briefly in sequence.
Then the LEDs will light in patterns that
represent the version numbers of the
firmware (embedded software) files that
are loaded into the module. Upon comple-
tion, the Power LED will light continuously.
For normal operation to commence, prior
to powering up the module ensure that
a USB flash drive is not plugged into the
USB port on the front panel.
LED Indicators
A brief discussion of the Model 5152’s sta-
tus LEDs will be covered in this section.
Front-Panel LEDs
As previously discussed, upon power up
the twelve front-panel LEDs will light in a
short sequence as an initialization test.
Afterwards they are used to display the
version number of the installed MCU and
FPGA firmware. Refer to the Technical
Notes section of this guide for details. Fol-
lowing the power-up sequence, the Power
LED will light and remain lit.
The USB Activity LED will not light during
normal Model 5152 operation. It will be lit
continuously or in a pattern when a USB
flash drive is plugged into the USB port
on the front panel and file transfer activ-
ity is taking place. Details on how the LED
functions when the USB port is active are
covered in the Technical Notes section of
this guide.