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SLM-7650 Satellite Modem
Operation
3.4.6.2
Utility Demodulator Menu
Menu Item
ASSIGN RECEIVER FILTERS
DEMODULATOR TYPE
DECODER TYPE
RX BPSK ORDERING
DEMOD SPECTRUM
RX IESS-310 MODE
RX R-S CODE WORD
RX SYMBOL RATE
Filter:
A, B, C, D, or V
Data rates are referenced in paragraph 3.3.
Note:
These assignments are used for the selection of the Rx rate in the
Configuration Functions menu.
Receive filter type select. Select Type INTELSAT OPEN or EFD CLOSED
network receive filtering.
Note: This window is only available when CUSTOM is selected for modem
type in the Utility menu.
FEC type select. Select VITERBI or TURBO.
Note:
This window is only available when CUSTOM or EFD is selected for
modem type in the Utility Menu.
Receive BPSK bit ordering selection. Select STANDARD or NON-
STANDARD. Press an arrow key to make the selection. Press [ENTER] to
execute the change.
Programmable vector rotation. Select NORMAL or INVERT for spectrum
reversal of the I and Q baseband channels. Press an arrow key to make the
selection. Press [ENTER] to execute the change.
Select IESS-310 mode on or off.
IESS-310 mode is for 8-PSK 2/3 modulation with Reed-Solomon only.
Press an arrow key to make the selection. Press [ENTER] to execute the
change.
Displays or selects the current N, K, T, and Interleave values for the Reed-
Solomon FEC. The standard code word can only be changed when CUSTOM
is the selected modem type in the Utility Menu.
Status Only.
Displays the current RX Symbol Rate within 9.6 ksym/s to 10 Msym/s.
3-29
Specifications/usage
Revision 4
MN/SLM7650.IOM
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