IFT Evolve 300 CX - Page 31

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C.A.T.Testing

Itispossible(andrecommended)totestthefunctionsandperformanceofC.A.T.before
actuallyflyingthehelicopter.ItiseasiesttotestintheLOmodeasyoucankeepthemotors
connectedtothecontrolunit(butbesuretouseextremecautionastherotorbladeswillspin

withanyleft‐hand/throttlestickinput!).HoweveryoucanalsotestintheHImodeAFTER
disconnectingthemotorsfromthecontrolunit,movingthecorrespondingswitchonthe
transmittertotheONpositionandraisingtheleft‐hand/throttlesticktoaboveapproximately
the1/3positionfor5seconds.

YoucantestthefunctionandperformanceofC.A.T.bykeepingyourselfandall
obstacles/objects‘clear’ofthesensors(holdingthehelicopterbythelandinggear/skids,
aboveyourheadandnearthecenteroftheroomisonewaytoaccomplishthis).Thenhold
youropenhand/palmoranothersimilarlysized
andrelativelyflat/solidobjectalignedinfront
of,paralleltoandapproximately16‐20inches(40–50centimeters)awayfromeachsensorto
seetheresponse(NOTE:Ifyouholdyourhandortheobjectcloserthanorfartherthan16–20
inchesawayyoumaynotseeaconsistentresponseduring
thistest).Andaslongasthe
sensorsareconnectedtotheC.A.T.moduleandfunctioningcorrectly,youshouldnotethe
followingresponsesduringthetest:

 WhenyouholdyourhandoranobjectinfrontoftheREARsensor(SEN1),theelevator
(left‐hand)servoshouldpushtheswashplateupward(forward/downelevatorcontrol
input).

 WhenyouholdyourhandoranobjectinfrontoftheLEFTsensor(SEN2),theaileron
(right‐hand)servoshouldpulltheswashplatedownward(rightaileroncontrolinput).

 WhenyouholdyourhandoranobjectinfrontoftheFRONTsensor(SEN3),the
elevator(left‐hand)servoshouldpulltheswashplatedownward(backward/up
elevatorcontrolinput).

 WhenyouholdyourhandoranobjectinfrontoftheRIGHTsensor(SEN4),theaileron
(right‐hand)servoshouldpushtheswashplateupward(leftaileroncontrolinput).

Ifthewrongservorespondsand/ortheservorespondsinadifferentdirectionthannoted
aboveyoushouldchecktoseeifthecorrespondingsensorisconnectedtothecorrect
channel/setofpinsontheC.A.T.module.Or,iftheservodoesnotrespondatallitmaybe
necessaryto
replacetheservoorsensor.

Youcanalsousethistestproceduretodetermineapproximatelyhowwellaparticular
obstacle/objectcanbedetected.Bykeepingyourselfandallotherobstacles/objectsclearof
thesensors,holdthehelicopterapproximately4feet(1.2meters)awayfromthe
obstacle/objectyou’dliketocheck/characterize.Positionthehelicoptersothe
obstacle/object
isalignedinfrontofandparalleltooneofthesensors.Then,slowlymovethe