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Auto-Tuning
Without external commands, the GBR 23 will
automatically scan frequencies between 283.5-325.0 kHz
@ 0.5kHz steps for 100 and 200 bps stations only. To use
25 & 50 bps, you will need to manually tune the beacon
via the GPS receiver or other source. For non-GARMIN
receivers which do not supply a valid tuning interface (pg.
11-12) to the GBR 23, it is not necessary to connect to the
DATA IN (BROWN) wire of the GBR 23. The GBR 23
should tune into a DGPS station within about 10 minutes.
The unit will store the last used frequency in non-volatile
memory and default to that frequency on next use. If you
lose DGPS signal, the unit will attempt to reconnect to the
last frequency and if necessary, tune to another station.
(-)
(+)
8-35 VDC
Closed- ON
Open- OFF
Switch
Figure 2: Wiring a Remote Power Switch For the GBR 23
UNITS WITH
18 PIN PLUG
Power / Data Cable
2
1
3
6
11
7
15
12
18
16
UNITS WITH 4 PIN,
RECTANGLE PLUG
Data Cable
4
1
2
3
(Not used)
GBR 23
Fuse
2-6A
Power/Data Cable
Remote Power Switch
(1) RED: 8-35 VDC
(2) BLACK: GROUND
(5) WHITE: REMOTE ON/OFF*
(15) RED: POWER INPUT
(18) BLACK: GROUND
(17) BLUE: DATA OUT
(16) BROWN: DATA IN
(11) YELLOW: ALARM
(1-10,12-14) NOT USED
(4) BLACK: GROUND
(3) WHITE: DATA OUT
(2) GREEN: DATA IN
* When the black and white wires are combined, the GBR 23 will turn on/off
when power is applied/removed to pins 1 & 2. To remotely control power to
the GBR 23, see Figure 2.
Figure 3: Sample Wiring to GARMIN GPS Units
(-)
(+)
Fuse
2-6A
8-35 VDC
(1) RED: 8-35 VDC
(2) BLACK: GROUND
(5) WHITE: REMOTE ON/OFF*
(4) BROWN: DATA IN
(3) BLUE: DATA OUT
(6) GREEN: NOT USED
(7) YELLOW
:
NOT USED
(-)
(+)
Fuse
2-6A
8-35 VDC
(1) RED: 8-35 VDC
(2) BLACK: GROUND
(5) WHITE: REMOTE ON/OFF*
(4) BROWN: DATA IN
(3) BLUE: DATA OUT
(6) GREEN: NOT USED
(7) YELLOW
:
NOT USED
Installation
Connecting
GBR and GPS
1
7
6
2
5
3
4
GBR 23
Power / Data Cable
GBR 23
Power / Data Cable
9
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Table of Contents
Troubleshooting
