Datum Systems M7 Series - Page 100

Maintenance M7/M7L/M7LT Modular Satellite Modem
3-44 M7/M7L/M7LT - Rev. 0.05
Modulator Parameters
Representation
Type
Entry
Description
Data FEC Option
4k Block
Selection
0 = 256 Block,
1 = 512 Block,
2 = 1k Block,
3 = 2k Block,
4 = 4k Block,
5 = 8k Block,
6 = 16k Block,
(LDPC) Sets the LDPC FEC
encoder block size
Data FEC Code Rate
3/4
Selection
0 = 1/2, 1 = 2/3,
2 = 3/4, 3 = 14/17,
4 = 7/8, 5 = 10/11,
6 = 16/17
(LDPC) Sets the code rate of the
LDPC FEC encoder.
Data Scrambler
Auto
Selection
0 = Disable,
1 = Auto
2 = V.35,
3 = Intelsat,
4 = EFD,
5 = Alt V.35
6 = Alt Intelsat
7 = FEC Sync
8 = FEC Sync
(LDPC) Scrambler types. Types
are added or removed
depending on the selected FEC
mode. The Auto mode uses
IESS standards to automatically
switch to use synchronous
scramblers part of R-S and TPC.
BUC Power
Enabled
Selection
0 = Disabled
1 = Enabled
Selects Power and Voltage to a
BUC in the M7LT
BUC Voltage Out
+23.2 V
Numeric
Read Only
Displays Voltage Output on
Transmit Cable in the M7LT
BUC Current
+3.42 A
Numeric
Read Only
Displays Current draw of BUC in
the M7LT
BUC 10 MHz Ref
Enabled
Selection
0 = Disabled
1 = Enable
Selects if modem’s current 10
MHz reference to be supplied to
a BUC in M7L/LT
BUC LO Frequency
13050.000000MHz
Numeric
0 to 49999.999996 MHz
Selects BUC LO frequency in
M7L/LT. If set non-zero then IF
frequency setting is at RF
frequency.
BUC Xmt Spectrum
Non-Inverted
Selection
0 = Non-Inverted
1 = Inverted
Sets the compatibility of the
spectrum dependent on inverting
or non-inverting BUCs in
M7L/LT. Low side LO provides a
non-inverted spectrum.
BUC Xmt Gain
Disabled
Numeric
0.00 to 99.99 dB
Sets the gain of the BUC in the
M7L/LT
BUC Xmt Level Max
+30 dBW
Numeric
0.00 to +30dBW
Sets the ?? in the M7LT
BUC FSK Remote M&C
(Future Option)
Selection
Future Option
BUC Remote Parameter 1
(Future Option)
Numeric
Future Option
BUC Remote Parameter 2
(Future Option)
Numeric
Future Option