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18
6. OPTIONAL DGPS
Beacon Receiver Set GR-80
GP-90
GR-80
DATA
DATA4
NP Board
JP3
Open
TD-A
TD-B
RD-A
RD-B
GND
RD-A
RD-B
TD-A
TD-B
GND
1
2
3
4
5
6
7
4
3
2
1
7
RS-422*
RS-422
* This connection is required for L/L Auto mode of GR-80.
Whip
Antenna
Preamp unit (with
15 m cable)
WHT
BLK
YEL
GRN
BLU
P
P
When the GP-90 is connected with Beacon Receiver GR-80, do the setting as follows.
Signal level RS-422 *1
First Bit LSB
Parity NONE
Stop Bit 1
Baud Rate 4800 or 9600 *1
*1: Coincide with the setting of the Beacon Receiver GR-80.
Refer to page 17 for DGPS setup.