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Applicable to: UC6580, UM670A, UM680A

This message outputs the parsed TGD/ISC information of each satellite. The data transmission uses Big Endian method.

ID	Field	Type	Description	Bits	Bit Offset
1	System	U8	1 - GPS ; 2 - GLO; 3 - GAL; 4 - BDS; 5 - QZSS	8	0
2	SatNum	U8	Output the TGD satellite numbers	8	8
3	TGDInfo	—	See the three tables below	SatNum * 89	16
Total				16 + SatNum * 89

The following tables are the TGD/ISC information encoding structure for GPS/QZSS, BDS and GAL systems.

GPS/QZSS TGD/ISC Info

ID	Field	Type	Description	Bytes	Byte Offset
1	Svid	U8	GPS satellite number: 01 to 32 QZSS satellite number: 01 to 10	8	0
2	toe	Int17	Time of ephemeris; LSB: 2^4; unit: s	17	8
3	TGDL1	S16	L1 group delay; LSB: 2^-31; unit: s; 0x8000 means invalid	16	25
4	ISCL1C	S16	L1 group delay; LSB: 2^-35; unit: s; 0x8000 means invalid	16	41
5	TGDL5	S16	L5 group delay; LSB: 2^-35; unit: s; 0x8000 means invalid	16	57
6	ISCL5Q	S16	L5 group delay; LSB: 2^-35; unit: s; 0x8000 means invalid	16	73
Total				89

BDS TGD/ISC Info

ID	Field	Type	Description	Bytes	Byte Offset
1	Svid	U8	BDS satellite number: 01 to 64	8	0
2	toe	Int17	Time of ephemeris; LSB: 2^3; unit: s	17	8
3	TGDB1I	S16	B1I group delay; LSB:1e-1; unit: ns; 0x8000 means invalid	16	25
4	ISCB1I	S16	Specified to constant 0x8000	16	41
5	TGDB2A	S16	B2A group delay; LSB:2^-34; unit: s; 0x8000 means invalid	16	57
6	ISCB2A	S16	B2A (data) delay; LSB:2^-34; unit: s; 0x8000 means invalid	16	73
Total				89

GAL TGD/ISC info

ID	Field	Type	Description	Bytes	Byte Offset
1	Svid	U8	GAL satellite number: 01 to 36	8	0
2	toe	Int17	Time of ephemeris; LSB:6e1; unit: s	17	8
3	TGDE1	S16	E1 group delay; LSB:2^-32; unit: s; 0x8000 means invalid	16	25
4	ISCE1	S16	Specified to constant 0x8000	16	41
5	TGDE5A	S16	E5A group delay; LSB:2^-32; unit: s; 0x8000 means invalid	16	57
6	ISCE5A	S16	Specified to constant 0x8000	16	73
Total				89

TGD/ISC Information (Sub ID 0x0FD)

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