"SC Timetone Broadcast Message" (APP/LSM)

ITOS Mnemonic:  LSMSITIMETONE

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Focus:	Maintenance / Operation
Structures:	Abstract / Concrete

Context:

Description:

The SC sends this message once a second on the CTDB bus. It contains the GPS time information to associate with the next GPS time hack.

Layout:  (hide detail; help)

SC Timetone Broadcast Message (SITIMETONE) Telecommand Packet Format
0x	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15
000	Version=0			T=1	SH	APID=0x701:3
002	SF=3		Sequence Count
004	Packet Length=9
006	0	Function Code=3
008	TIMESEC sec
00C	TIMEFLAGS flags
00E	Packet Checksum

SITIMETONE (pkt)
|  TIMESEC sec (fld)
|  TIMEFLAGS flags (fld)

typedef struct _LSM_SITIMETONE_Pkt {

    /* CCSDS header */
    char                 hdr[8];

    /* Command payload */
    LSM_SITIMETONE_Prm   pay;

} LSM_SITIMETONE_Pkt;

Fields:

TIMEFLAGS (index)

Attribute(s):  

Brief:  "Timetone SC flags"

Instance(s):  flags

TIMESEC (index)

Attribute(s):  

Brief:  "Timestamp seconds"

Instance(s):  sec