Futaba 4EXA - Manual (Page 9)

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Model memory number Model memory number
The Futaba T4EX stores model memories for four models. This means all the data (control throws, end points, etc.) for up to
four different models can be stored in the transmitter and activated at any time (depending upon which model you choose to
fly that day). This eliminates the requirement for reconfiguring the transmitter each time you decide to fly a different model
with it! When the transmitter is turned on the model number model number and the transmitter voltage will be indicated on the LCD screen.
Before every flight BE CERTAIN BE CERTAIN that the correct model number for the model you intend to fly appears on the screen. If the
transmitter is not operating the correct model, some (or all) of the controls could be reversed and the travels will be wrong.
Flying a model with the wrong program will result in a crash, so always be certain be certain the model number in the transmitter is
correct. One way to ensure this is to write the corresponding model number directly on the airplane, or attach a list to the
bottom or back of the transmitter.
Transmitter battery voltage Transmitter battery voltage
In addition to the model number, the LCD screen also displays the
transmitter battery transmitter battery
voltage voltage. When the voltage goes below approximately 8.5 Volts 8.5 Volts the “ battery ” icon will flash and
the low-battery alarm will continuously “ beep ” until the transmitter is turned off. When the
low-battery alarm sounds you will have approximately four minutes (or less) to land your model
before losing control. You should never allow the transmitter voltage to become this low while
flying, but if it does, land immediately immediately.
PROGRAMMING THE 4EX RADIO PROGRAMMING THE 4EX RADIO
Anytime you wish to view view or change change any of the current settings in the transmitter, the programming mode must first be entered
by, of course, turning on the power, then by pressing the ““MODE MODE”” and ““SELECT SELECT”” keys simultaneously and holding them down
for one second. Once “ in the program ” the MODE key will be used to scroll through each of the seven functions (model number/
data reset, reversing, exponentials, end point adjustments, trim memory, “ v-tail ” mixing, and “ elevon ” mixing) and the SELECT
key will be used to view the settings within the function. When a data change is actually required the ““DATA INPUT DATA INPUT”” lever will
be used to increase or decrease the value of the item displayed, thus making the change.
You can return to the “ home ” screen (where the model number and battery voltage is displayed) by pressing the MODE and
SELECT keys simultaneously and holding them down for one second.
Note: Note: The functions are listed and described in the order that they appear in the transmitter. Read all the way through the
programming instructions before setting up your model (if you won ’ t be using any of the mixing functions for a while you can
read those instructions when ready). Refer to the FLOW CHART on page 13 as well.
Note: Note: When the transmitter voltage reads 8.9 Volts 8.9 Volts you will still
have approximately ten minutes (or less) before losing operational
range, so this is the recommended absolute minimum absolute minimum voltage. If
the transmitter ever reaches 8.9 Volts, land as soon as safely
possible. A more reasonable margin of safety would be to quit flying
for the day (or recharge the batteries) when the transmitter battery. is
at 9.4 Volts.
SUGGESTED GUIDELINES SUGGESTED GUIDELINES
9.4 Volts - No more flying until recharge.
8.9 Volts - Land as soon as safely possible.
8.5 Volts - Emergency- Land immediately! Emergency- Land immediately!
““Battery Battery”” icon icon