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A-40 Lassen-SK8 Embedded GPS Module
Trimble Standard Interface Protocol
A.17.38 Report Packet 0x58
This packet provides GPS data (almanac, ephemeris, etc.). The receiver sends this packet
under the following conditions:
• On request
• In response to Packet 0x38 (acknowledges the loading of data)
The data format is shown below.
The binary almanac, health page, and UTC data streams are similar to Report Packets
0x40, 0x49, and 0x4F respectively, and those reports are preferred. To get ionosphere or
ephemeris, this report must be used.
Table A-41. Report Packet 0x58 Data Formats
Byte Item Type Value Meaning
0 Operation BYTE 0
1
2
Data type cannot be loaded
Acknowledge
Data Out
1 Type of
data
BYTE 2
3
4
5
6
Almanac
Health page, T_oa, IONO
UTC
Ephemeris
2 Sat PRN # BYTE 0
1 to 32
Data that is not satellite ID-specific
Satellite PRN number
3 length (n) BYTE Number of bytes of data to be loaded
4 to n+3 data n BYTES