KGP-920
Chapter 8
Setup Procedure
93121662-00
8-5
8.3 Menu 4: Differential GPS (DGPS)
This DGPS system can improve the GPS positioning accuracy. There are two styles, BEACON and
SBAS, in DGPS, and BEACON is further divided into the system of internal receiver and external
receiver. The internal receiver system requires internal beacon receiver kit of option. The external
receiver system requires an external differential beacon receiver, which outputs the compensation data
of RTCM SC-104, connected to a GPS navigator.
8.3.1 Displaying DGPS
When the DGPS is set, the DGPS positioning status is displayed with letters
D
on
A
(NAV1),
B
(NAV2),
C
(NAV3),
D
(PLOT) screen.
8.3.2 Selecting a style of DGPS
Initial setup: BEACON
BEACON: DGPS for RTCM SC-104 .
SBAS: WAAS / EGNOS / MSAS
(1) Press [
MENU
] key until Menu options 1 to 9 appears.
(2) Press [
4
] key to select “
4:DGPS
”.
(3) Press [
1
] key to select “
1:DGPS STYLE
”.
(4) Press [ ] or [ ] key to move cursor onto ”
BEACON
” or “
SBAS
”.
(5) Press [
ENT
] key.
8.3.3 DGPS measurement
Initial setup: AUTO
OFF
: Normal GPS positioning takes place.
D
letter is not shown.
ON
: DGPS correction takes place only.
D
letter continues during DGPS correction.
AUTO
: DGPS correction takes place when DGPS correction data is received.
When no data is received, the normal GPS positioning is automatically changing from DGPS
positioning.
(1) Press [
MENU
] key until Menu options 1 to 9 appears.
(2) Press [
4
] key to select “
4:DGPS
”.
A
(NAV1) screen
B
(NAV2) screen
C
(NAV3) screen
D
(PLOT) screen
DGPS mode
On: DGPS positioning in progress
Indication
Blinks: Unsuccessful DGPS positioning
Off: Canceled DGPS positioning
Cursor