SLM-5650B Satellite Modem
Revision 2
Appendix B B–1 MN-SLM-5650B
Appendix B. OPERATIONS
REFERENCE
B.1 Overview
This appendix provides the end user with reference guides for the DSSS and non-DSSS LDPC
modes.
The Data Rates and Symbol Rates shown in the following tables all assume that Transmission
Security (TRANSEC) is turned off. In order to calculate the max data rate with TRANSEC on,
the max data rate shown in the table becomes a max aggregate data rate. The real data rate can
be calculated by dividing the TRANSEC overhead rate from the aggregate data rate. The
TRANSEC overhead rate can be calculated for any TRANSEC Frame Length (N) as follows:
TRANSEC Overhead Rate = (3 + 16 * N) / (16 * N) where N=8
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