User guide

90
6. Enter the number of calibration points; you must have at least two points. You could use four points
(zero, ¼, ½, ¾, Full) or one point for every 2 gallons. Every calibration point must have a Quantity
that is higher than the previous one.
7. Use [NEXT] to Scroll down to the tank calibration data. The calibration data is displayed in two
columns, one for ground and one for flight. Use the knob button to switch between ground and flight
data columns. The current AD_VALUE reading for the tank is displayed at the top of the table.
8. Starting at 0 Gallons press the [COPY] button or use the knob to record the current AD_Value to the
correct fuel amount and attitude (ground or flight).
9. Add fuel (at increments you've decided on) and then record the new AD_Value by pressing [COPY]
10. You will need to fill and record a reading for each attitude (ground and flight). If you have a tail wheel
aircraft, the best way to do this is to record the ground data then lift the tail and record the flight data
after the fuel reading has settled. Repeat this for each increment until the tank is full.
11. Press the [SAVE] button to save the data to permanent memory and [RETURN] to exit Tank
Calibration.
12. After you complete Tank 1, move on to Tank 2 and follow the same procedure. If you have Aux
Tanks, follow this procedure for Tank 3 & 4.
13. IF YOU DO NOT HAVE AUX TANKS, TURN TANKS 3 & 4 OFF!
CAUTION: Do not turn off power before pressing the save button and exiting the calibration menu.
Calibration Tips:
When lifting the tail you should set it on something, so the level you lift it to will be consistent. You should
also wait until the reading stops changing before setting it.
Fuel tank sensors are not accurate when the tank is near full. Once you notice the reading not changing
much or not corresponding with the rest of the readings during calibration the last few entries in the fuel
calibration data should be set to the same value.
If the tanks do not consistently show full you should lower the digital value for the tank full data.
The fuel gauge will only show the digital fuel amount for the highest reading that the float changed with a
plus sign indicating that the correct fuel amount is not known but is over the last reading. The analog gauge
will show full for the last changing reading. It is normal for an 18-gallon tank to show 16+ when it is full. This
indicates that the float stopped changing at 16 gallons and this is the highest fuel reading that can be
detected by the float in the tank.
Trim/Flap Calibration
Item 28-30 in Instrument Calibration
From the Calibration menu select:
Item 26 Elevator
Item 27 Aileron
Item 28 Flap Position
The calibration menu lets you set the up, down, and center position. If you don't have one or any of these
indications, you can turn them off.
To calibrate Elevator Trim (for example):
1. Run your trim servo all the way up. With UP highlighted, press [COPY].
2. Move your trim servo to the center streamline position. With CENTER highlighted, press [COPY].
3. Move your trim servo all the way down. With DOWN highlighted, press [COPY].
4. Press [SAVE].
Repeat this procedure for Aileron Trim and Flap Position
CAUTION: Do not turn off power before pressing the save button and exiting the calibration menu.