Vislink Strata RX, Техническое справочное руководство

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Theory of Operation 9-10
Strata RX
Technical Reference Manual
9.4 AGC/IF Module
T
he AGC/IGF module performs several tasks:
• Converts the incoming 900 MHz signal to 70 MHz.
• Maintains AGC (automatic gain control) over the input
signal.
• Provides a calibrated RCL (received carrier level) front
panel display.
• Provides receiver squelch control in IF and Analog
modes.
9.5 Switch and IF Interface Module
The Strata RX provides a very high degree of operator control
over inputs and outputs. All of this flexibility is managed by the
Switch and IF Interface Module.
The Switch and IF Interface Module is responsible for routing all
the signals handled by the RX. This includes both input and
output signals to and from their connectors, and internal signals
to and from the RX modules.
This overall signal routing is illustrated schematically in Figure 9-
11.
9.5.1 Monitor and Output Switching
The Strata RX allows the operator to choose the signal that
appears at the Monitor (“MON.”) connector, and the signal that
appears at the “Signal Out” connector.
This is represented schematically in Figure 9-10.
Figure 9-10: Monitor and Signal Out Switching
COFDM
DEMOD
MPEG
DECODER
ASI Out
ASI
ASI
Signal Out
Monitor
70 MHz
IF
IF
IF
IF
IF
SDI
SDI Out
CV Out
CV
FMR