NavCom LAND-PAK Rev.N - Manual (Page 58)

Technical Reference Manual Rev. N
Blk = All; Blu = IOP w/Internal Radio ; Red = IOP & LBM ; Grn = Engine only 56
0x49 - Solution Control - 22 bytes
This message describes the observable satellites to be used, the minimum number of SVs for
solution, the maximum PDOP for solution, the elevation mask, constraint flags, height to be
constrained, differential mode control, differential data to old time, DGPS station ID and
Navigation Update rate, and also allow the user to implement a vertical or slope antenna bias,
as defined by message 0x4b.
Record
Usage Command - Yes
Response - Yes Input: sets PVT solution parameters;
Output: reports the current settings of the receiver PVT configuration
Ref Message Field Description
Data
Type
Units Range Scale
Byte
Count
STX 02 (hex) U08 1
PRA1 99 (hex) U08 1
PRA2 66 (hex) U08 1
ID 49 (hex) U08 1
Length 0x0016 U16 2
W1
Command Action
B1=1: Store in NVRAM
B2=1: Use ACK/NAK
B3=1: Use Default Values
U08 1
W2
Observables to be used
0x00: Best available (Default)
0x01: CA only (L1 CA code)
0x02: P1 only (L1 P code)
0x03: P2 only (P2 code)
U08 1
W3 Minimum SVs for solution (Default: 3) U08 3-10 1
W4 Maximum PDOP for solution (Default: 10) U08 0 to 25.5 LSB=0.1 1
W5 Elevation Mask - Code Nav (Default: 7) U08 degrees 0 to 90 1
W6
Constraint flags
B0=1: Constrain Height
0: Solve height (Default)
B1=1: Iono correction enabled (Default)
B2=1: Tropo-correction enabled (Default)
B3=1: Tropo-Correction of dGPS
messages (Valid only for RTCM
type 1 and 9 msgs); Default is off.
B4=0: Auto transition from 3D and 2D
(Default)
B5=0: Use last known 3D height
(Default).
1: Use entered height
B6=0: Do not use SET correctors
1: Apply SET correctors to navigation
fix
B7=1: Adjust vertical (height) by
indicated bias (From 0x4b)
(Affects output of message 0xb1.)
Default is off (0).
U08 1
W7
Entered Constrained Height (above
ellipsoid)
R32 meters 4