Ensemble Designs 9455 3G Clean and Quiet Protection Switch - Manual (Page 7)

www.ensembledesigns.com 7435 and 9455 - page 7
Model 7435 and 9455 Clean and Quiet Protection Switches
Deserializer
Fail-Safe Bypass
Ref
Frame
Syncronization
&
Audio SRC
Genlock
Master
Ref
3G/HD/SD
Primary Input
Output 2 Output
Formatting
Fail-Safe
Out
GPI Inputs Sel Sec
Sel Pri
Switch Position
GPI Override Inputs
SNMP/Thumbnails
Avenue System Control
Secondary Fail
Primary Fail
Common
Ethernet
Form C
Relay
Alarm Outputs
Backplane
Interface
Output 3
Output 4
Output 5
Content
Analyzer
Primary Loop Out
Deserializer
Frame
Synchronization
&
Audio SRC
3G/HD/SD
Secondary Input
Content
Analyzer
Secondary Loop Out
Serializer
Module Control System
Decision Arbitration
Clocks and Reference
Video
Video
9455 Clean and Quiet Protection Switch Block Diagram
The block diagram, above and on the following page, illustrates the signal flow of the 9455. Note that
in the event of power failure, the passive relay passes the primary input to the Relay Protected Output.
The Primary and Secondary inputs pass through serial digital receiver/equalizers for buffering. When
a fault is detected in the Primary input, and the Secondary input is seen as not faulted, the electronic
solid state switch will activate, switching the Secondary input to the output. If both the primary and
the secondary inputs signals are faulted, consistently timed color black will be output.
Each of the signals is fed to identical detection circuits which evaluate multiple parameters
and characteristics of the signal in order to arrive at a fault decision. The output feeds a Field
Programmable Gate Array (FPGA) where the signals are vetted, or tested for configured parameters.
The Signal Vetter™ process in the FPGA detects the parameters chosen by the user through the
Avenue PC or Touch Screen menus. Each of the chosen aspects are monitored independently, and
when they fail to meet the vetted standard, a fault condition is issued.
Fault conditions can be monitored with an external alarm system or other device through the 9-pin
Control connector of the dongle connected to the corresponding 15-pin rear backplane connector.
The Form C relays status outputs from this connector can be monitored by a device to show Primary
and Secondary signal status and the current position of the protect switch (Primary or Secondary).
Two GPI Override Inputs are available to allow changing switch position in response to triggers from
an external source. This can be used to manually reset the switch after the Primary has recovered from
a fault condition or set to respond to a signal state from an external device to trigger a switch.
The on-board CPU can monitor and report module ID information (slot location, software version
and board revision), and power status to the frame System Control module. This information can be
accessed by the user or set to register an alarm if desired using the remote control options available.
Every function and parameter on the module can be controlled from an Avenue Touch Screen Control
Panel or the Avenue PC Control Application. Memory registers can be used to save the complete
configuration of the module, making it easy to change instantly between different configurations.