User manual

13SPEKTRUM DX20 • TRANSMITTER INSTRUCTION MANUAL
EN
Installation
Ingasandglowaircraft,installtheX-Plus8modulebywrappingit
in protective foam and fastening it in place using rubber bands or a
hook and loop strap. In electric airplanes or helicopters, you can use
thick double-sided foam tape to fasten the module in place.
WhenusinganX-Plusreceiverandmodule,itisrecommendedthat
theX-Plus8modulebemountedasneartothereceiveraspossible.
When using the jumper lead to power the module, mounting the
X-Plus8modulenearthereceiversystemwillminimizethecurrent
lossfromthereceiver.Servoextensionscanbeusedwitheach
servo, but we recommend using heavy 22 gauge wire with gold-
plated connectors.
ApowerjumperplugmustbeinstalledinoneoftheBATT/JMPR
ports of the module if the module is powered from the receiver
through the SRXL port.
Alwaysremovethepowerjumperwhenanauxiliarybatteryorauxil-
iarybatteriesareused.Whentheauxiliarybatteryoptionisused,the
X-Plus8modulecanbemountedasfarawayfromthereceiveras
needed to be near connected servos.
Power System Requirements
Inadequate power systems that do not provide the necessary mini-
mum voltage to the receiver during flight are the number one cause
of in-flight failures. Some of the power system components that
affect the ability to properly deliver adequate power include:
• Receiverbatterypack(numberofcells,capacity,celltype,state
ofcharge)
• The ESC’s capability to deliver current to the receiver in electric
aircraft
• The switch harness, battery leads, servo leads, regulators, etc.
TheX-Plus8modulehasaminimumoperationalvoltageof3.5
volts; it is highly recommended that the power system be tested per
the guidelines.
Recommended Power System Test Guidelines
Ifaquestionablepowersystemisbeingused(e.g.,asmallorold
battery, an ESC that may not have a BEC that will support high-
currentdraw,etc.),performthefollowingtestwithavoltmeter.
The Hangar 9
®
DigitalServo&RxCurrentMeter(HAN172)orthe
SpektrumFlightLog(SPM9540)workwellforthistest.
Plugthevoltmeterintoanopenchannelportinthereceiverand,with
thesystemon,loadthecontrolsurfaces(applypressurewithyour
hand)whilemonitoringthevoltageatthereceiver.Thevoltageshould
remain above 4.8 volts even when all servos are heavily loaded.
CAUTION: When charging Ni-MH batteries, make sure the
battery fully charges. Ni-MH batteries charged with peak
detectionfastchargershaveatendencytofalsepeak(i.e.notfully
charge),whichcouldleadtoacrash.
TheX-Plus™8moduleisdesignedtoallowexpansionofupto
8 servos for non-control surface functions such as bomb drops,
lights, winches, retractable landing gear, and many more. The
X-Plus8iscompatiblewithSpektrum™X-Plustransmittersand
receivers.TheX-Plus8moduleofferstheoptiontopowerthe
connectedservosviadualauxiliarybatteryportswithseparate
batteriesandswitchharnesses(soldseparately)independentof
thereceiver.TheX-Plus8modulecanalsobepoweredinclusive
of the receiver by using the included jumper through either of the
dualBATT/JMPRports.
Features:
• 8-channelexpansion
• Dual battery ports
• Included Jumper offers option of using receiver power
• Allowsnetuningof8servosonnon-criticalcontrols(bomb
drops,lights,winches,gear,etc.)
Applications
Scalemodelerswithcomplexaircraft,ships,orsurfaceapplica-
tionswillenjoytheeasyprogrammingandfunctionsoftheX-Plus
8moduleusingX-Pluscompatibletransmitter’sAirWare™
software. Modelers will be able to select 2 position,
3 position or potentiometer adjustment through their transmitter.
After selecting the specific switch or port, AirWare software will al-
lowtheindividualservoadjustmentofeachX-Pluschannel‘stravel
adjust, sub trim, reversing, and speed.
Specifications
Type:X-PlusModule
Channels: 8
Dimensions:0.91x1.61x0.79in
(23x41x20mm)
Weight:.42oz(11.9g)
VoltageRange:3.5to9.6V
Resolution:512
Compatibility:AllX-Plustransmittersandreceivers
X+1
X+5
X+6
X+2
X+3
X+4
X+7
X+8
BATT/JMPR
BATT/JMPR
SRXL
X+6 Servo
ToSRXLPort
AuxiliaryBattery
Pack
(optional)
Jumper
On/OffSwitchHarness(optional)
X+5Servo
X+4 Servo X+3 Servo X+2 Servo X+1 Servo
X+8 Servo X+9 Servo
X-PLUS™ MODULE
CAUTION:OnlyusetheincludedJumperswiththeX-Plus
8module.DonotuseBindPlugsfortheJumpers.