8
SPEKTRUM DX3R PRO USER GUIDE
EN
All Spektrum receivers have a minimum operational
voltage of 3.5 volts. If the voltage drops below 3.5
volts, the system will cease control until power is
regained.
reCommended Power sysTem
TesT guIdelInes
If you are using a questionable power system (e.g.
small or old battery, ESC that may not have a BEC that
will support the servo’s current draw), you should use
a voltmeter to perform the following test.
Plug the voltmeter into an open channel port in the
receiver. With the system on, load the servos (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 loaded. For
gas vehicles, tap and twist the receiver battery pack
while watching the voltmeter. Some battery packs
have poorly welded tabs that give only intermittent
power. Such a defect shows up during shock and
vibration, so this test verifies the battery construction
is good.
TyPICal range
Your system’s range can vary greatly due to your
installation and the environment. In most cases you
should be able to have full control of your vehicle to
the limits of sight. Typical telemetry range is 100–200
feet and will vary depending on the operating
environment. If range issues exist, you can optimize
your installation by extending the receiver’s antenna
as vertically as possible. Locating it as high in the
vehicle as practical and also route the antenna away
from any onboard electronics.
maIn sCreen
Racer X
01: Losi Eight
Int 1:47:30
Lap 0:17:50
S/R 75%
4.7
volts
Trim
St
Th
BR
-12
+0
+104
1
2
3
4
5
6
7
8
9
The information displayed on the screen is as follows.
1
: Timer A
5
: Brake Trim or Aux Position
2
: Timer B
6
: Steering Rate
3
: Steering Trim
7
: User Name
4
: Throttle Trim
8
: Model number and name
9
: Transmitter (Tx) voltage (flashes and alarm sounds when
low battery is reached)
While driving/racing you should have the main screen
or telemetry screen displayed.
To aCCess The maIn sCreen
Any time the transmitter is turned on the main screen
appears.
From the List screen, the first function at the top of
the List screen is Main. Using the roller, highlight the
Main function and press the roller to access the Main
screen.
Pressing and holding the rolling selector for
more than 3 seconds from any screen - returns
the display to the Main Screen.
Note
: When the battery voltage drops below
the preset value in the System function (preset
to 4.0 volts), an alarm sounds and the voltage
reading flashes.
