Operation
SDM-2020 Satellite Demodulator
3–56
Rev. 3
3.5 Fault
Tree
Refer to Table 3-6 for fault tree description.
Table 3-6. Demodulator Fault Tree
DEMODULATOR
FLT
LED
FLT RLY
ALM
LED
ALM
RLY
RX AIS
SYNC
LED
COM EQ
FLT
INTERFACES
(see Note)
Carrier Detect
ON
ON
ON
ALL
IF Synthesizer
ON
ON
ON
ALL
I Channel
ON
ON
ON
ALL
Q Channel
ON
ON
ON
ALL
BER Threshold
ON
ON
ALL
Module
ON
ON
ON
ALL
Configuration
ON
ON
ON
ALL
RX Interface:
Frame SYNC
ON
ON
ON
OFF
ALL
Data Stable/AIS
ON
ON
OFF
ALL
Clock PLL
ON
ON
ON
ALL
FIFO
ON
ON
ALL
Interface Module
ON
ON
ON
ALL
Buffer Overflow
ON
ON
G.703
Buffer Underflow
ON
ON
G.703
Buffer Clock Activity
ON
ON
G.703
Buffer Full Warning
ON
ON
G.703
2047 Lock
ON
ON
CEQ:
Battery/Clock
ON
-12 Volt Supply
ON
ON
+ 12 Volt Supply
ON
ON
+ 5 Volt Supply
ON
ON
Controller
ON
ON
LNB
ON
Note:
The following list shows the current available interfaces:
•
RS422
•
LVDS
•
ASI/RS422
•
ASI/LVDS
•
ECL_HSSI
•
G.703
•
SMPTE 310M
Summary of Contents for SDM-2020
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