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Copernicus GPS Receiver 149
TRIMBLE STANDARD INTERFACE PROTOCOL (TSIP) A
Report Packet 0x57 - Information About Last Computed Fix
This packet provides information concerning the time and origin of the previous
position fix. The receiver sends this packet, among others, in response to Packet
0x37.
The data format is shown below.
Report Packet 0x58 - Satellite System Data/Acknowledge from Receiver
This packet provides GPS data (almanac, ephemeris, etc.). The receiver sends this
packet in response to Packet
0x38 (acknowledges the loading of data). The data
format is shown below..
Table A.38 Report Packet 0x57 Data Formats
Byte Item Type Units Byte 0 Value/Velocity
0Source of
information
UINT8 -- 00 temporary no fix
01 good current fix
1 Mfg. diagnostic UINT8 --
2-5 Time of last fix Single seconds, GPS time
6-7 Week of last fix INT16 weeks, GPS time
Table A.39 Report Packet 0x58 Data Formats
Byte Item Type Value Definition
0 Operation UINT8 1
2
Request data from
receiver;
Load data into
receiver
1 Type of data UINT8 2
3
4
5
6
Almanac
Health page, T_oa, WN_oa
Ionosphere
UTC
Ephemeris
2 Sat PRN# UINT8 0
1 - 32
Data that is not satellite - ID specific
satellite PRN number
3 Length (n) UINT8 Number of bytes of data to be loaded
4 to n+3 Data
Table A.40 Report Packet 0x58 Almanac Data
Byte Item Type Definition / ICD-GPS-200
4 t_oa_raw UINT8 Sec 20.3.3.5.1.2
5 SV_HEALTH UINT8 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