Cmm 3 5 cmm 4 optional carrier modulated with idle

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Unformatted text preview: RRIER MODULATED WITH IDLE SEQUENCE) 4. CMM-3: 5. (CMM-4): (OPTIONAL: CARRIER MODULATED WITH IDLE SEQUENCE) 6. CMM-1: CARRIER MODULATED WITH TC DATA: TRANSMIT ONE CLTU UNMODULATED CARRIER ONLY END COMMAND SESSION Figure 4-1: Sequence of CMMs Comprising PLOP-1 CCSDS 201.0-B-3 Page 4-3 June 2000 CCSDS RECOMMENDATION FOR TELECOMMAND: CHANNEL SERVICE PLOP-2. PLOP-2 is a procedure whereby the physical telecommand channel is not deactivated after each transmitted CLTU. The termination of an individual CLTU is provided only through the data path, using the CLTU Tail Sequence and, optionally, Idle Sequences. This places the decoder in the SEARCH state (S2) after each CLTU. The decoder is forced into the INACTIVE state (S1), by deactivating the physical telecommand channel only at the end of transmission of a series of CLTUs, which may be followed by an Idle Sequence or not. It should be noted that when operating with PLOP-2, it is recommended to systematically insert a minimum Idle Sequence of one octet between each CLTU to eliminate the small but finite possibility of sy...
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