Comtech EF Data DD240XR Rev Е - Manual (Page 58)

User Interfaces DD240XR High-Speed Digital Demodulator
4-38 MN-DD240XR – Rev. E
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Rx Clock Source
Rx Clock
Polarity
Buffer Size
Exc Clock
Frequency
Test Pattern
Eb/No Alarm
Limit
Major Alarms
Mask 1
Major Alarms
Mask 2
Minor Alarms
Mask 1
Minor Alarms
Mask 2
Common Faults
Mask
3 = RXSAT, 4 = EXC direct, 5 = EXC Referenced PLL
0 = normal, 1 = inverted
in 1 msec steps, Range = 0 msec to 64 msec
1000000 | 1544000 | 2000000 | 2048000 | 5000000 | 6312000 |
8448000 | 10000000
0 = none, 1 = (2
15
-1), 23=(2
23
-1)
With implied decimal point. 1030 = 10.30 dB. Range 100 to
1500, 1.00 to 15.00 dB
Bit 0 = loss of signal lock
Bit 1 = loss of synthesizer PLL lock
Bit 2 = input level alarm
Bit 3 = reserved for POST alarm
Bit 4 = FPGA configuration alarm
Bit 5 = reserved for deframer FIFO fault
Bit 6 = reserved for deframer PLL lock fault
Bit 7 = carrier subsystem comm fault
0 = Mask, 1 = Allow
Bit 0 = demod subsystem comm fault
Bit 1 = loss of clock activity
Bit 2-7 = reserved
0 = Mask, 1 = Allow
Bit 0 = reserved for loss of buffer clock
Bit 1 = loss of Rx data activity
Bit 2 = loss of demodulation lock
Bit 3 = loss of inner FEC lock
Bit 4 = loss of outer FEC lock
Bit 5 = loss of dvb frame lock
Bit 6 = Eb/No alarm
Bit 7 = reserved
0 = Mask, 1 = Allow
Bit 0 = terrestrial buffer underflow
Bit 1 = terrestrial buffer overflow
Bit 2 = terrestrial buffer near empty
Bit 3 = terrestrial buffer near full
Bit 4 = exc clock activity
Bit 5 = loss of exc pll lock
Bit 6 = Ethernet Dest ID
Bit 7 = Ethernet Link Status
0 = Mask, 1 = Allow
Bit 0 = -12 V alarm
Bit 1 = +12 V alarm
Bit 2 = +5 V alarm
Bit 3 = +24 V alarm
Bit 4 = reserved for temperature alarm