Lowrance electronic LMF-400 - Manual (Page 28)

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Trim Tab Sensors: highlighting Trim Tab Sensors and pressing ENTER,
will launch the following message: Press Enter to Reset Device Values.
To reset the Trim Tab Sensor settings to the default setting, press
ENTER .
Calibration of EP Devices
Calibrating Fluid level is an important step to ensuring the status of
your tank is correctly transmitted over the NMEA 2000 bus.
For example: if you have an odd-shaped tank, like one that is wider at
the top than at the bottom, the float inside the tank will tell you there
is a half tank of gas when it reaches the midpoint of the tank,
regardless of the tank’s actual capacity below the midpoint. That could
cause you to run out of gas more quickly than expected. Whether the
tank is configured for Fuel, Fresh Water, Waste Water, Black Water or
Oil, calibrating the Fluid Level protects you from unpleasant surprises.
NOTE:
To run a system check for devices connected to the NMEA 2000
network, select
B US D EVICES
from the System Setup menu and press
ENTER . A Searching Bus Devices message comes up, followed by a
list of all devices attached to the LowranceNET — the Bus Devices
list. To select an item from the bus devices list, use the
UP and
DOWN keys to scroll through the list. Highlight the desired category
and press ENTER .
To calibrate a tank:
1. Press
MENU , select S
YSTEM
S
ETUP
and press ENTER .
2. From the System Setup menu, highlight B US D EVICES
and press ENTER
to bring up the Bus Devices list.
3. From the devices list, highlight the fluid level source you want to
calibrate, press
ENTER , select C
ALIBRATE
and press ENTER . A menu will
appear with three calibration options: 2 point, 3 point and 5 point.
To execute
2-Point Calibration: there will be a pair of settings in the 2-
point calibration menu: Empty Level and Full Level. 2-Point calibration
is best for rectangular or square shaped tanks that allow the fuel level
sensor to provide an accurate reading of the fuel level at the top and
bottom of the tank.
1. Choose the level (
E MPTY OR F ULL L EVEL
) that corresponds with your
tank's current fuel level and press ENTER .
If you choose F
ULL
L
EVEL
, the following message will appear: Calibrating
Set Tank to Full Level Press Enter.
2. Press
ENTER and you will be taken back to the 2-point menu.
3. Press EXIT to return to the Bus Devices list.