Monitor And Control (M&C); Figure 3-9. Monitor And Control (M&C) Block Diagram - Comtech EF Data KST-2000B Installation And Operation Manual

Ku-Band Satellite Transceiver
Operation
The microcontroller performs several operations on the reference assembly.
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3.8 Monitor and Control (M&C)
The Monitor and Control (M&C) monitors the KST-2000A/B and provides configuration
updates to the up converter, down converter, and HPA when necessary. Refer to
Figure 3-13.
232 / 422
The KST-2000A/B configuration parameters are maintained on battery locked RAM,
which provides recovery after power down.
The M&C functions include extensive fault and status reporting, as well as 1:1 redun-
dancy logic. All KST-2000A/B functions are accessible through the remote communica-
tions interface.
It monitors the external reference status, and if an external input is detected, will
try to frequency-lock the 10 MHz oscillator.
It monitors the 10 MHz oscillator oven current to determine when the oscillator
is warmed enough to provide a stable output.
It sends control words to the 72 MHz PLL.
It gathers and reports fault and status information to the KST-2000A/B M&C as-
sembly.
RAM ROM
485
MODULE M&C
COMM
TEMP
ANALOG
MON
Figure 3-9. Monitor and Control (M&C) Block Diagram
EXT
LED
INPUT
KEYPAD
DISPLAY
LNA
CTRL
I2C
RAM
EXT
IN
MON
3–23
MN/KST2000AB.IOM
EXT
OUTPUT
FAULT
RELAY
1:1
CONTROL
STATUS
Revision 9