Trimble Outdoors SK8 - Manual (Page 105)

Lassen-SK8 Embedded GPS Module A-41
Trimble Standard Interface Protocol
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Note – All angles are in radians.
Table A-42. Report Packet 0x58 Almanac Data
Byte Item Type Meaning/FCD 200 Sec. No.
4 t_oa_raw BYTE Sec 20.3.3.5.1.2
5 SV_HEALTH BYTE Sec 20.3.3.5.1.2
6-9 e SINGLE Sec 20.3.3.5.1.2
10-13 t_oa SINGLE Sec 20.3.3.5.1.2
14-17 i_o SINGLE Sec 20.3.3.5.1.2
18-21 OMEGADOT SINGLE Sec 20.3.3.5.1.2
22-25 sqrt_A SINGLE Sec 20.3.3.5.1.2
26-29 OMEGA_0 SINGLE Sec 20.3.3.5.1.2
30-33 omega SINGLE Sec 20.3.3.5.1.2
34-37 M_0 SINGLE Sec 20.3.3.5.1.2
38-41 a_f0 SINGLE Sec 20.3.3.5.1.2
42-45 a_f1 SINGLE Sec 20.3.3.5.1.2
46-49 Axis SINGLE Sec 20.3.3.5.1.2
50-53 n SINGLE Sec 20.3.3.5.1.2
54-57 OMEGA_n SINGLE Sec 20.3.3.5.1.2
58-61 ODOT_n SINGLE Sec 20.3.3.5.1.2
62-65 t_zc SINGLE Sec 20.3.3.5.1.2. see Note 2.
66-67 weeknum INTEGER Sec 20.3.3.5.1.2
68-69 wn_oa INTEGER Sec 20.3.3.5.1.2
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Note 2. – If data is not available, t_zc is set to -1.0.
Table A-43. Report Packet 0x58 Almanac Health Data
Byte Item Type Meaning/IDC 200 Sec.
4 week # for health BYTE Sec 20.3.3.5.1.3
5-36 SV_health BYTE Sec 20.3.3.5.1.3
37 t_oa for health BYTE Sec 20.3.3.5.1.3
38 current t_oa BYTE units = seconds/2048
39-40 current week # INTEGER