Enhanced Interface Printed Circuit Card; Dmd20 Functional Block Diagram - Radyne DMD20 Installation And Operation Manual

DMD20/DMD20 LBST Universal Satellite Modem
The Baseband Printed Circuit Card also contains the Monitor and Control (M&C) Circuitry
responsible for:
Programmable part setup and initialization
Continuous control and adjustment of some functions
Calibration
Monitoring fault status
Calculating and displaying measurements
Calculations
User monitor and control interface including front panel and remote
Unit's configuration and feature set
The M&C System is based on a powerful microprocessor with a large amount of Flash memory.
Several bus architectures are used to interconnect the M&C to all components of the DMD20.
Communication to the outside world is done via connections to the remote port, terminal port,
Ethernet port, and alarm ports. The M&C runs off of software programmed into its Flash memory.
The memory can be reprogrammed via the Ethernet port to facilitate changes in software.

3.0.3 Enhanced Interface Printed Circuit Card

The normal terrestrial data for the Baseband Processing Card can be re-routed to the enhanced
interface card. The enhanced interface card adds a variety of connections to the modem for
additional applications

3.1 DMD20 Functional Block Diagram

Figure 3-4 represents the DMD20 Functional Blocks. The modem is shown in a typical
application with customer data, Tx/Rx RF equipment and an antenna.
TM103 – Rev. 2.5
Theory of Operation
3-3