REFERENCE MANUAL - FTP Directory Listing - Trimble
REFERENCE MANUAL - FTP Directory Listing - Trimble
REFERENCE MANUAL - FTP Directory Listing - Trimble
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TRIMBLE STANDARD INTERFACE PROTOCOL (TSIP)<br />
A<br />
Command Packet 0x37 - Request Status and Values of Last Position and<br />
Velocity<br />
This packet requests information regarding the last position fix and should only be<br />
used when the receiver is not automatically outputting positions. The GPS receiver<br />
returns Report Packet 0x57 followed by the position/velocity packets specified in<br />
Command Packet 0x35.<br />
Command Packet 0x38 - Request/Load Satellite System Data<br />
This packet requests current satellite data (almanac, ephemeris, etc.) or permits<br />
loading initialization data from an external source (for example, by extracting<br />
initialization data from an operating GPS receiver unit via a data logger or computer<br />
and then using that data to initialize a second GPS receiver unit). The GPS receiver<br />
returns Packet 0x58. (Note that the GPS receiver can initialize itself without any data<br />
from the user; it merely requires more time.)<br />
To request data without loading data, use only bytes 0 through 2; to load data, use all<br />
bytes. Before loading data, observe the caution notice below. The data formats are<br />
located in Report Packet 0x58.<br />
Table A.22<br />
Command Packet 0x38 Data Formats<br />
C<br />
Byte Item Type Value Definition<br />
0 Operation UINT8 1<br />
2<br />
1 Type of data UINT8 2<br />
3<br />
4<br />
5<br />
6<br />
2 Sat PRN# UINT8 0<br />
1 - 32<br />
Request data from Lassen IQ<br />
GPS Receiver; Load data into<br />
Lassen IQ GPS Receiver<br />
Almanac<br />
Health page, T_oa, WN_oa<br />
Ionosphere<br />
UTC<br />
Ephemeris<br />
Data that is not satellite - ID<br />
specific<br />
Satellite PRN number<br />
3 Length (n) UINT8 Number of bytes of data to be<br />
loaded<br />
4 to n+3 Data UINT8 Satellite data<br />
WARNING – Loading all satellite data at once sends a lot of bytes to the unit, which<br />
could overwhelm the unit’s serial receive buffer. Always wait for the acknowledge packet<br />
before sending the next data block.<br />
Copernicus GPS Receiver 139