REFERENCE MANUAL - FTP Directory Listing - Trimble
REFERENCE MANUAL - FTP Directory Listing - Trimble
REFERENCE MANUAL - FTP Directory Listing - Trimble
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A<br />
TRIMBLE STANDARD INTERFACE PROTOCOL (TSIP)<br />
Command Packet 0x24 - Request GPS Receiver Position Fix Mode<br />
This packet requests current position fix mode of the GPS receiver. This packet<br />
contains no data. The GPS receiver returns Packet 0x6D.<br />
Command Packet 0x25 - Initiate Soft Reset & Self Test<br />
This packet commands the GPS receiver to perform a software reset. The GPS<br />
receiver performs a self-test as part of the reset operation. This packet contains no<br />
data. Following completion of the reset, the receiver will output the start-up messages<br />
(see Table A.4). The GPS receiver sends Packet 0x45 only on power-up and reset (or<br />
on request); thus if Packet 0x45 appears unrequested, then either the GPS receiver<br />
power was cycled or the GPS receiver was reset.<br />
Command Packet 0x26 - Request Health<br />
This packet requests health and status information from the GPS receiver. This packet<br />
contains no data. The GPS receiver returns Packet 0x46 and 0x4B.<br />
Command Packet 0x27 - Request Signal Levels<br />
This packet requests signal levels for all satellites currently being tracked. This packet<br />
contains no data. The GPS receiver returns<br />
Packet 0x47.<br />
Command Packet 0x2B - Initial Position (Latitude, Longitude, Altitude)<br />
This packet provides the GPS receiver with an approximate initial position in latitude<br />
and longitude coordinates (WGS-84). This packet is useful if the user has moved<br />
more than about 1,000 miles since the previous fix. (Note that the GPS receiver can<br />
initialize itself without any data from the user; this packet merely reduces the time<br />
required for initialization.) This packet is ignored if the receiver is already<br />
calculating positions. The data format is shown in the table below.<br />
Table A.17<br />
Command Packet 0x2B<br />
Byte Item Type Units<br />
0-3 Latitude Single Radians, north<br />
4-7 Longitude Single Radians, east<br />
8-11 Altitude Single Meters<br />
Note – To initialize with ECEF position, use Command Packet 0x23.<br />
134 Copernicus GPS Receiver