BBG1040ACO-OM (V1.4)
BBG-1040-ACO PRODUCT MANUAL
1-7
Introduction
BBG-1040-ACO Functional Description
Video Processor Description
The BBG-1040-ACO features frame sync, character burner, and moving-box
insertion. The BBG-1040-ACO video subsystem also provides the functions
described below.
Input Video Select/Quality Check Functions
The input can be selected using DashBoard manual control, set to failover to
an alternate input upon loss of the target input, and can be externally selected
via a GPIO interface. An input
Allowed Rasters
and
Allowed Frame Rates
filter
allows inputs to be filtered (screened) for only user-allowed raster sizes and
frame rates, with unallowed raster/rates being rejected as an input (input
unlock). Reclocked copies of any SDI input can be outputted when selected as
a choice on the output crosspoint.
A user-configurable Quality Check function allows subjective criteria such as
black/frozen or no video frame events to propagate an event alert. This alert
can be used by the device Presets function to invoke video routing changes,
GPO, and other actions.
Auto-Changeover Function
(See Figure 1-2.) This function allows the logic assert of input select and
routing to the
A/B PROC OUT
processed output under normal conditions,
while providing latching relays at both the input and output nodes to provide
input failover to select an alternate input, and also provides output failover
which can passively relay-route the currently selected input directly to the
output if the device loses power.
The
A/B PROC OUT
SDI output retains selected routing regardless of whether
a selection was manually invoked or by a unit-detected failover (such as loss
of power). For example, prior to a power loss event if a changeover from
SDI IN A
to
SDI IN B
was active at the time, this selection is retained by the
latching relays. In a power-loss event,
SDI IN B
would be directly routed to
output
A/B PROC OUT
, and the device automatically removed from the signal
path until normal operation again commences. In normal operation, the output
relay always maintains routing from the device processed output to output
A/B PROC OUT
.
Note:
The device also provides active (DA-driven) outputs
RCK/PROC 1
thru
RCK/PROC 3
. These outputs are independent of the relay failover function and
will lose signal in the event of a power loss.