Trimble Outdoors 58052-00 Benutzerhandbuch

Copernicus GPS Receiver     1 3 9

TRIMBLE STANDARD INTERFACE PROTOCOL (TSIP)     A

This packet requests information regarding the last position fix and should only be 
used when the receiver is not automatically outputting positions. The GPS receiver 
returns Report Packet 0x57 followed by the position/velocity packets specified in 
Command Packet 0x35.

This packet requests current satellite data (almanac, ephemeris, etc.) or permits 
loading initialization data from an external source (for example, by extracting 
initialization data from an operating GPS receiver unit via a data logger or computer 
and then using that data to initialize a second GPS receiver unit). The GPS receiver 
returns Packet 

0x

58. (Note that the GPS receiver can initialize itself without any data 

from the user; it merely requires more time.)

To request data without loading data, use only bytes 0 through 2; to load data, use all 
bytes. Before loading data, observe the caution notice below. The data formats are 
located in Report Packet 0x58.

C

WARNING – 

 Loading all satellite data at once sends a lot of bytes to the unit, which 

could overwhelm the unit’s serial receive buffer. Always wait for the acknowledge packet 
before sending the next data block.

Table A.22

Command Packet 0x38 Data Formats

Byte

Item

Type

Value

Definition

0

Operation

UINT8

1
2

Request data from Lassen IQ 
GPS Receiver; Load data into 
Lassen IQ GPS 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

 UINT8

Satellite data