Comtech EF Data DD2401 User Manual

Page 52

User Interfaces

DD2401 Satellite Demodulator

MN-DD2401 - Rev. G

<1>

*<1>

Latched Alarm 2

Latched Alarm 3

Latched Alarm 4

Latched Comm.
Alarm 1

Latched Alarm 5

Bit 4 = Reed-Solomon Sync Fault
Bit 5 = Reed-Solomon Excessive Errors Fault
Bit 6 = Reed-Solomon Uncorrectable Word Fault
Bit 7 = Receive Forced Alarm
(0 = Pass, 1 = Fail)

Bit 0 = Buffer Underflow
Bit 1 = Buffer Overflow
Bit 2 = Buffer Under 10%
Bit 3 = Buffer Over 90%
Bit 4 = Receive FPGA fault
Bit 5 = Rx LNB Fault, LBST Only
Bits 6 -7 = Spares
(0 = Pass, 1 = Fail)

Bit 0 = IF Synthesizer Lock Detect Fault
Bit 1 = Rx Oversample PLL Lock Detect Fault
Bit 2 = Buffer Clock PLL Lock Detect Fault
Bit 3 = Viterbi Decoder Lock Fault
Bit 4 = Sequential Decoder Lock Fault
Bit 5 = Rx 2047 Test Pattern Lock Fault
Bit 6 = External Reference PLL Lock Fault
Bit 7 = Frame Sync/Multiframe Sync Fault
(0 = Pass, 1 = Fail)

Bit 0 = Buffer Clock Activity Detect Fault
Bit 1 = External BNC Activity Detect Fault
Bit 2 = Rx Satellite Clock Activity Detect Fault
Bit 3 = External Reference PLL Activity Fault
Bit 4 = High Stability Activity Detect Fault
Bit 5 = High Stability PLL Fault
Bit 6 = Eb/No Threshold Fault
Bit 7 = Spare
(0 = Pass, 1 = Fail)

Bit 0 = -12 V Alarm
Bit 1 = +12 V Alarm
Bit 2 = +5 V Alarm
Bit 3 = Temperature Fault
Bit 4 = Interface FPGA Fault
Bit 5 = Battery Fault
Bit 6 = RAM/ROM Fault
Bit 7 = Spare
(0 = Pass, 1 = Fail)

Bit 0 = IBS/IDR Satellite Multiframe Sync Loss
Bit 1 = IBS/IDR Satellite Frame Sync Loss
Bit 2 = Spare
Bit 3 = IBS BER Alarm
Bit 4 = IBS Prompt Alarm
Bit 5 = IBS Service Alarm
Bit 6 = Turbo Codec Lock Fault
Bit 7 = Spare
(0 = Pass, 1 = Fail)

Opcode: <2409h>

Query a Demodulator’s Current Alarms