User manual

41SPEKTRUM DX20 • TRANSMITTER INSTRUCTION MANUAL
EN
The Range Test function reduces the power output. This allows for
arangetesttoconrmtheRFlinkisoperatingcorrectly.Perform
a range check at the beginning of each flying session to confirm
system operation.
To Access the Range Test screen:
1. With the transmitter on and the main or telemetry screen
displayed, press the scroll wheel. The Function list displays.
2. Scroll to highlight Range Test, then press the scroll wheel to
access the Range Test function.
3. With the Range Test screen displayed, push and hold the
trainerbutton.ThescreendisplaysReducedPower.Inthis
mode the RF output is reduced allowing for an operational
range test of your system.
4. If you let go of the trainer button, the transmitter will go back
toFullPower.
IMPORTANT: Telemetry alarms are disabled during the
Range Test.
Range Testing the DX20
1. With the model restrained on the ground, stand 30 paces
(approx.90feet/28meters)awayfromthemodel.
2. Face the model with the transmitter in your normal flying
positionandplacethetransmitterintoRangeTestmode(see
above).Thenpushthetrainerbutton;thepoweroutputwillbe
reduced.
3. Operate the controls. You should have total control of your
model with the transmitter in Range Test mode.
4.Ifcontrolissuesoccur,contacttheappropriateHorizonProduct
Support office for assistance.
5.Ifperformingarangetestwhileatelemetrymoduleisactive,
the display will show flight log data.
The DX20 Timer function allows you to name and program a
countdowntimerorstopwatch(countuptimer)todisplayonthe
main screen. An alarm sounds when the programmed time is
reached. You can program the timer to start using the assigned
switch position or automatically when throttle is raised above a
programmed position. Two internal timers are available that show
run time for a specific model displays on the Main Screen. A total
system timer is also available.
Range Test
Timer
FUNCTION LIST
ProTrim
ProTrimallowstheRates,Expo,Mixes,andDifferential(Aileron,
V-Tail,Rudder,Tip-Aileron,andFlap)tobeadjustedbytheleftand/
or right trims during initial trimming flights.
To setup Left or Right ProTrim:
1. Scroll to CENTER, then press the scroll wheel to zero the value
ofthetriminit’scurrentposition.PressingCENTERwillcenter
the Trims and allow for further trimming even if the trims have
been moved to there end points.
2. Scroll to Adjust, then press the scroll wheel to select Rates,
Expo,MixesorDifferential.
3.IfRatesorExpoareselected,scrolltoAxistoselecttheaxis
thatProTrimmodies.TheLeft/RightandUp/Downdirections
can be made active or Inhibited.
BecauseProTrimisdesignedtonetunenaltrimsandnotasa
standardighttrim,itwillrevertbacktoINHafterthenextpower
cycle.
WhenProTrimisActive,movingoneofthetrimbuttonswillenable
aProTrimmenutoappearonthemainscreen.WhenProTrim
isdisplayed,pressthescrollwheeltogodirectlytotheProTrim
Menu.
IMPORTANT:ProTrimistobeusedforsmalladjustmentsinight,
not large changes.
IMPORTANT: ProTrimwillnotmoveavaluefrom+to-direction
for safety. Large adjustments should be made on the ground and
veriedcorrectonthegroundpriortoighttopreventun-expected
control response in the air.