Orion NMEA User Manual
GPS Receiver Module
Micro Modular Technologies Pte. Ltd.
Page 15 of 25
No. 3, Ubi Avenue 3, #03-02 Crocodile House 408857 Singapore
Tel: 65-6745-8832 Fax: 65-6293-0661 Email: sales@micro-modular.com
www.micro-modular.com
4.2.3
Section 13/16 - Datum Configuration
a. Set a built-in datum:
$PUNV,CONFIG,16,ID*cc
ID is the ID of the desired datum. See Section 6 for built-in datum codes.
Default is 1 (WGS-84).
b. Set a custom datum configuration:
$PUNV,CONFIG,13,Dx,Dy,Dz,Da,Df,Name,0*cc
Dx, Dy, and Dz are the X, Y, and Z coordinate offsets in meters.
The defaults are 0.0, 0.0, 0.0 .
Da is the semi-major axis in meters. The default is 6378137.
Df is the flattening coefficient. The default is 0.003352810664 .
Name is the name of the datum. Maximum is 8 characters.
Examples:
Select the “TOY-B” (South Korean) datum:
$PUNV,CONFIG,16,211*0E
Select the default datum (WGS-84):
$PUNV,CONFIG,16,1*0D
4.2.4
Section 17 - Position Pinning & 2D/3D Startup
Set position pinning and 2D/3D startup parameters:
$PUNV,CONFIG,17,PosThreshold,VelThreshold,2D/3DStartMode*cc
PosThreshold is the threshold value for position jump. Position pinning will be disabled if
this value is reached.
VelThreshold is the threshold value for velocity calculation. Position pinning will be disabled
if this value is reached.
2DStartMode indicates whether the receiver will enter 2D startup initially during a cold start
based upon last navigated altitude.
Table 13 – 2D/3D Start Mode Configuration Parameter
Example:
Set the default settings:
$PUNV,CONFIG,17,50.0,1.0,3*3A
2D/3D Start Mode
0 = only 3D startup allowed
1 = Reserved. Do not use
2 = Reserved. Do not use
3 = 2D startup is allowed
Default: 3