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Lassen-SK8 Embedded GPS Module A-37
Trimble Standard Interface Protocol
A.17.35 Report Packet 0x55
This packet requests the current I/O option states and optionally allows the I/O option
states to be set as desired.
These abbreviations apply to the following table: ALT (Altitude), ECEF (Earth-centered,
Earth-fixed), XYZ (Cartesian coordinates), LLA (latitude, longitude, altitude), HAE
(height above ellipsoid), WGS-84 (Earth model (ellipsoid), MSL geoid (Earth (mean sea
level) mode), and UTC (coordinated universal time).
Table A-38. Command Packets 0x55 and 0x35 Data Descriptions
Byte
Parameter
Name
Bit
Position
Default
Bit
Value Option
Associated
Packet
0 position 0 (LSB) 1 XYZ ECEF Output
0: off
1: on
0x42 or
0x83
1 0 LLA Output
0: off
1: on
0x4A or
0x84
2 0 LLA ALT Output
0: HAE (datum)
1: MSL geoid
0x4A or
0x84
0x8F-17
0x8F-18
3 0 ALT input
0: HAE (datum)
1: MSL geoid
0x2A
4 0 Precision-of-position
output
0: Send single-precision
packet
1: Send double-
precision packet
0x42/4A/8F-
17
0x83/84/8F-
18
0 position 5 0 0: output no Super
Packets
1: output all enabled
Super Packets
0x8F-17,
0x8F-18
0x8F-20
6-7 0 not used
1 velocity 0 1 XYZ ECEF Output
0: off
1: on
0x43
1 0 ENU Output
0: off
1: on
0x56
2-7 0 not used