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SDM-300L3 Satellite Modem
Introduction
1.8.2
Functional Description
The M&C card is composed of the following subsections:
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MODEM
11 MHz
CLOCK
DAC
ADC
Microcontroller with Universal Asynchronous Receiver/Transmitter (UART)
Digital-to-Analog Converter (DAC)
Read Only Memory (ROM)
Analog-to-Digital Converter (ADC)
Read Access Memory (RAM)
Universal ASYNC
User Interface
Fault and Alarm Relays
MICRO-
CONTROLLER
2
I C BUS
EIA-232
OR
EIA-485
Figure 1-3
FAULT
AND ALARM
RELAYS
RAM AND
9-PIN
REMOTE
. M&C Block Diagram
1–13
MN/SDM300L3.IOM
ROM
(M&C,
BULK,
BOOT)
REAL
TIME
CLOCK
Revision 1
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