Owner manual

18 SPEKTRUM DX2S USER GUIDE
EN
To select the telemetry sensor settings, rotate the Rolling
SelectorandplaceaboxaroundTele-SPEEDthenpress
the Rolling Selector. The surrounding box will flash.
Rotate the Rolling Selector to select the desired sensor
settingforadjustmentthenpresstheRollingSelector.
Use the Rolling Selector to select the sensor parameters
toadjust.
PresstheRollingSelectorandasurroundingboxwill
flash.
UsetheRollingSelectortoadjustthevalueandpressthe
Rolling Selector to select.
To return to the main screen press and hold the Rolling
Selector for more than three seconds.
Tele-SPEED
Zoom - The Zoom setting sets the maximum range or
boundary of the Speed unit.
Unit - Select rpm, mph, km/h display units
RollOut-TheRollOutfunctionisonlyvisiblewhenthe
unit is set to mph or km/h and is the internal calculator
that allows rpm data to be converted to mph or km/h.
WhentheRollOutvalueissetto1.0,thedefaultsetting
is true rpm of the shaft gear or flywheel that the rpm
sensor is hooked up to. In order to program the unit to
display speed in mph, a conversion factor is needed.
Following are two methods of determining the conversion
factor.
Method A
• Marktheclutchbellthatthesensorisreadingfrom
withasmallreferencemark.Amarkerworkswell.
• Setthecarnexttoarulerat0inch;thenrollthecar
forward by hand, counting each revolution of the
referencemark.Atexactly10revolutionsstopthe
car.
• Measuretheexactdistancethatthecartraveledin
ten revolutions and divide this distance by 10 (e.g.
12.0 inch divided by 10 = 1.20 inch).
• AdjusttheRollOutvalueuntil1.20appearsonthe
screen. Now all the rpm-related functions will be
displayed in mph or km/h.
Method B
For this method you either need to know the internal gear
ratio (normally provided in the vehicle’s manual) or be
able to calculate the ratio via the number of teeth on the
gears. It is also necessary to calculate the circumference
of(distancearound)thetire.Oncetheinternalratio
is known, and the circumference in inches has been
determined, simply divide the circumference by the
internal ratio and use this value as the conversion.
To calculate circumference—multiply 3.14 x the tire’s
diameter in inches.
To calculate internal gear ratio—divide the larger gear by
the smaller gear. With multiple gear transmissions, it is
necessary to multiply each of the larger to smaller gear
reduction ratios to arrive at the final ratio.
Note: The Telemetry screen displays the
maximum recorded speed from the point
that the receiver was turned on. To reset the
maximum recorded speed, it is necessary to
turn off the receiver, then back on.