Comtech EF Data KST-12000 - Manual (Page 89)

KST-12000 Ku-Band Satellite Terminal Revision 4
Theory of Operation MN/KST12000.IOM
LOCAL
KEYPAD/DISPLAY
(O PTIO NAL)
IN PU T
PORT
OUTPUT
LATCHES
D/A
CONVERTERS
A/D
CONVERTER
EEPROM
RELAY
2 BIT SERIAL BUS
PORT
LATCHES
RELAY
REGULATOR
REGULATOR
HPA FAULT
IF LOCK DET
D/C LOCK DET
U/C LOCK DET
8 BIT PARALLEL BUS
MICROCONTROLLER
PROGRAM
MEMORY
SERIAL
REMOTE
COMM
TXD/RXD
RS-232
RS-485
IFLO CNTL
U/C SYNTH
D/C SYNTH
FAN CNTL
HPA LVL CNTL
U/C AGC
U/C ATTEN
D/C LVL CNTL
REF OSC ADJ
SDA/SCL
D/C
U/C
HPA
HPA THERM
IF TUNING
HPA PWR MON
COLD/WARM START
U/C THERM
U/C TUNING
U/C LEVEL MON
D/C THERM
D/C TUNING
5V MON
12V MON
LNA CAL
NC
NC
COM
COM
NO
NO
TXD ENABLE
RF SHUTDOWN
LNA FAULT
D\C FHC
U\L FAC
UPLINK
DOWNLINK
TO LNA
10V
5V
12V
CURRENT
SENSE
INPUT POWER
Figure 5-3. M&C Functional Block Diagram
5–5