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FF520 Page 15
a. NMEA device capable of listening to DBT, DPT, VHW, VLW, MTW
b. Temperature sensor (10K ohms at 77°F)
c. 12VDC alarm buzzer (400mA max current draw)
WIRE COLOR
BLACK
FUNCTION
RED
WHITE
GREEN
GRAY
YELLOW
BROWN
BLUE
GND
Not connected
NMEAOutput(+)
NMEAGROUND
Temp 2 INPUT(+)
Alarm OUTPUT(+)
Not connected
Not connected
ORANGE
Not connected
Not connected
PINK
Figure 2.6 - The FF520 Optional Connections
2.6.0 NMEA Output
The following sentences are output: DPT and DBT (Depth), VHW (Speed), VLW (Trip Log),
MTW (Water Temperature), XDR (External Sensor Temperature).
2.6.1 Alarm Buzzer
This connection has the capability to drive a buzzer that draws 400mA. Any 12VDC buzzer
within the current draw requirements can to be connected.
2.6.2 Temperature Sensor
Any thermistor type temp sensor that produces 10K ohms at 77°F can to be connected.
White, NMEAoutput
Green, common
Black, ground
Yellow, Ext. Tempsensor
Blue,Alarm output
12VDC
Buzzer
12V Battery
+
NMEA
Device
External
Temp Sensor
Figure 2.6.2 - Optional Connections