Range Test; Advanced Range Testing - Spektrum DX18 Manuel D'utilisation

Set Up
In the first Sequencer screen, select 1 of the available 5
sequences. Select a switch to operate the sequence, such as
a 2-position switch (recommended). Numbered boxes show on
the screen for the available switch positions of the assigned
switch. Forward and Reverse cannot be assigned to the same
switch position. On a 3-position switch, two adjacent switch
positions must be assigned to one direction. Assign the third
switch position to the opposite direction.
Adjust timing as desired for the Forward and Reverse directions.
You can set the sequencer delay to Nor (no delay) or select a
delay between 0 and 30 seconds. Timing can be set indepen-
dently between Forward and Reverse as desired.
Assign long and short names for each function in a sequence
(A and B). For example, A might be named Gear, and B named
Gear Door. These names show on screens where space allows;
a long name may not appear due to space limitations.
The output type can be selected as either Step (S) (appearing
on the second screen as straight lines between points on the
graph) or Proportional (P) (appearing on the second screen as
curves between points on the graph). For S, the output will delay
until the sequencer reaches a 'kick point' where the output will
change then delay until the next 'kick point' is reached. For P,

Range Test

Always do a radio system range test before each flying session,
especially when flying a new model.
All Spektrum aircraft transmitters incorporate a range testing
system which, when activated, decreases output power for a
range test.
1. With the system powered on and the model restrained,
stand 30 paces (approximately 90 feet/28 meters) from the
model.
2. Face the model with the transmitter in your normal flying
position and put the transmitter into range test mode.
3. Operate the controls while holding the trainer/bind button.
You should keep full control of the model at 30 paces (90
feet/28 meters).
4. If the model does not respond correctly to controls, make
sure receiver antennas, receiver, servos and power supply
are operating correctly.
5. Release the trainer/bind button to return transmitter output
to full power.
6. Doing a range test while using a telemetry module will
display the flight log data on the transmitter screen.

Advanced Range Testing

For models containing large amounts of conductive material, use
a Flight Log for an advanced range test.
The advanced range test confirms that the receivers are operat-
ing correctly in their installed positions.
The Flight Log shows RF performance of each receiver. Two
people are required for doing the advanced range testing.
SPEKTRUM DX18 • TRANSMITTER INSTRUCTION MANUAL
the output of the sequencer is proportional between each kick
point. Movement is at the selected rate for a point then will
change to the next rate and direction when the next 'kick point'
is reached.
On the second Sequencer screen, adjust percentages of the
motion for each step (0-4). For example, if you desire retracts
to move quickly at the beginning of their extension and then
slow as they reach the end of the gear cycle, points 1, 2, and 3
could be moved toward the beginning of the sequencer motion
and further away from the end so that motion occurs early in
the sequence, with a delay to complete the final step in the
sequence.
Testing
When a sequence is assigned to a channel, the channel
responds as set up in the Sequencer function. Use respective
Monitor screens to see how control output responds to your
Sequencer settings.
1. Connect a Flight Log (SPM9540) to the main receiver's data
port and power on the system (transmitter and receiver).
2. Press the button on the Flight Log until the F- frame losses
are displayed.
3. Stand 30 paces (approximately 90 feet/28 meters) away
from the model, then face the model with the transmitter in
your normal flying position.
4. Put your transmitter into range test mode and decrease the
transmitter's power output.
5. Operate the transmitter controls while holding the trainer
switch. You should have full control of the model at 30
paces (90 feet/28 meters) from the model.
6. Have a helper move the model (nose up, nose down, nose
toward the transmitter, nose away from the transmitter—
similar to how the model will fly) while using the flight log to
see the effect of the aircraft's orientation on frame losses.
7. Do this range test for one minute, using the timer on the
transmitter. A successful advanced range test shows:
H- 0 holds; F- less than 10 frame losses;
A, B, R, L- Frame losses will typically be less than 100.
Compare relative frame losses. If a receiver has significantly
higher frame loss values (two to three times more), do the test
again. If the results are the same, move the receivers in the
model until results improve.
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