NavCom LAND-PAK Rev.N - Manual (Page 65)

Technical Reference Manual Rev. N
Blk = All; Blu = IOP w/Internal Radio ; Red = IOP & LBM ; Grn = Engine only
63
0x51 - Self Survey Control - 4 + n bytes
This message controls Self Survey by determining the number of seconds the survey is
averaged, the initial Latitude and Longitude entered, the ellipsoidal height and the Latitude and
Longitude LSBs as determined through words 2 through7.
Record
Usage Command - Yes
Response - Yes Input: sets RTK self-survey operation;
Output: reports the current averaged position and period
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 51 (hex) U08 1
Length 0x00xx U16 2
W1
Command Action
B1=0: Do not store in NVRAM
1: Store in NVRAM
Only available for modes
4, 5
B2=0: Do not use ACK/NAK
1: Use ACK/NAK
U08 1
W2
Mode
0: Off (Turn off Self Survey)
1: On (Start Self survey)
2: On 12 (Start Self survey,
auto-lock after 12 hours)
3: On 24 (Start Self survey,
auto-lock after 24 hours)
4: Locked (Lock present
Survey Point)
5: Entered (Survey point
follows)
6: Empty (Output only – No
Data Available)
U08 1
W3
# of seconds averaged
(0 indicates Entered Value)
U32 seconds 4
W4 Latitude (1.5 cm) S32 arc sec LSB: 2
-11
4
W5 Longitude (1.5 cm) S32 arc sec LSB: 2 -11 4
W6 Ellipsoidal Height S32 meters LSB: 2
-10
4
W7
B7-B4: Latitude Lsb’s (1 mm)
Always +
B3-B0: Longitude Lsb’s (1 mm)
Always +
U08 mm LSB: 2 -15 1
W8 Reserved U08 1
CKSM Checksum U08 1
ETX 03 (hex) U08 1