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Lassen-SK8 Embedded GPS Module A-59
Trimble Standard Interface Protocol
A.17.59 Command Packet 0xBB
In query mode, Packet 0xBB is sent with a single data byte and returns Report Packet
0xBB.
TSIP Packet 0xBB is used to set GPS Processing options. The table below lists the
individual fields within the 0xBB Packet. See A.3 for information on saving the settings to
non-volatile memory.
Table A-67. Command Packet 0xBB Query Mode Data Format
Byte
# Item Type Value Meaning Default
0 Subcode BYTE 0 x 03 Query mode
Table A-68. Command and Report Packet 0xBB Field Descriptions
Byte # Item Type Value Meaning Default
0 Subcode BYTE 0x03 0x03
1 Operating
Dimension
BYTE 0
3
4
Automatic (2D/3D)
Horizontal (2D)
Full Position (3D)
Automatic
2 DGPS
Mode
BYTE 0
1
2 or 3
DGPS off
DGPS only
DGPS auto
DGPS auto
3 Dynamics
Code
BYTE 4 Land
Sea
Air
Stationary
Land
4-14 Reserved Not used
15-18 Elevation
Mask
SINGLE 0.0 - 1.75 Lowest satellite
elevation for fixes
(radians)
0.0873 (5)
19-22 AMU Mask SINGLE Minimum signal
level for fixes
2.0
23-26 DOP Mask SINGLE Maximum DOP for
fixes
12.0
27-30 DOP Switch SINGLE Selects 2D/3D
mode
5.0
31-34 Reserved Not used
35 DGPS Age
Limit
BYTE Maximum time to
use a DGPS
correction
(seconds)
30
36-39 Reserved BYTE 0 Not used