Comtech EF Data SLM-5650B Installation And Operation Manual page 11

D.8.1 Introduction ...............................................................................................................................D-7
D.8.2 LDPC versus TPC .....................................................................................................................D-8
D.9 Direct Sequence Spread Spectrum (FAST Option) ............................................................... D-10
APPENDIX E. OVERHEAD AND SYMBOL RATE CALCULATIONS ................................................. E-1
E.1 Overview ...................................................................................................................................... E-1
E.2 SLM-5650B Processing Flow and Symbol Rate Calculation .................................................. E-2
E.3 Sources of Overhead .................................................................................................................. E-4
E.3.1 Framing Overhead .................................................................................................................... E-4
E.3.1.1 Reed-Solomon/Outside FEC Codec Framing Factor ................................................... E-4
E.3.1.2 AUPC/ASYNC (ESC) and ACPC Channel Framing ...................................................... E-4
E.3.1.3
TRANSEC Framing ....................................................................................................... E-5
E.3.2 T otal Framing Overhead ............................................................................................................ E-5
E.3.3 IP Traffic Encapsulation Overhead ............................................................................................ E-5
E.4 Product Support .......................................................................................................................... E-6
Table of Contents ix
SLM-5650B Satellite Modem
Revision 2
MN-SLM-5650B