Comtech EF Data KST-2000L - Manual (Page 42)

Satellite Terminal System Revision 2
Operation MN/KST2000L.IOM
6. The system is ready for final installation to the antenna feed. Perform the rest of
the system alignment to applicable international, national, or local regulations.
4.2 Monitor and Control (M&C)
The Monitor and Control (M&C) monitors the KST-2000L and provides configuration
updates to the up converter, down converter, and HPA when necessary. Refer to
Figure 4-2.
EXT
OUTPUT
FAULT
RELAY
EXT
INPUT
LED ROM RAM
232 / 422
10 MHz
OCVCXO 72 Mhz
Generator
10 Mhz
Output
485
Module
COMM M & C
Analog
MON
RAM
LNB
CTL
I C 2
Figure 4-2. Monitor and Control (M&C) Block Diagram
The KST-2000L configuration parameters are maintained on battery locked RAM, which
provides recovery after power down.
The M&C functions include extensive fault and status reporting. All KST-2000L func-
tions are accessible through the remote communications interface.
The M&C is composed of the following sections:
• Microcontroller and UART • D to A and A to D converters
• ROM • RAM
• Fault relays • 10 MHz/72MHz Oscillators
• LNB power control
• Inter-module communication interface
The microcontroller is an Intel 80C32 operating at 16 MHz. The micro-controller con-
tains 256 bytes of internal RAM. The external ROM is 29F020 (256 kbytes). The battery
backed RAM is 8 kbytes in size.
The non-volatile RAM allows the KST-2000L to retain configuration information with-
out prime power for 1 year.
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