11
Spektrum DX3C • Radio Instruction Manual
EN
Switch
The Switch Screen lets you assign 5 available switches
to these special functions:
ST trim
Assigns a switch to adjust center or neutral so
steering tracks straight
TH trim
Assigns the throttle idle adjustment to switch. Ad-
just throttle neutral (idle) position for drag braking
or rolling idle for some models. Decreasing idle
can enable a drag brake. Increasing idle can keep
a model rolling until the brake is used.
Brake
Assigns brake trim to switch. Full brake is the
default. Braking power can be decreased using this
trim on some models.
Aux Lin
Assigns channel 3 (Auxiliary) to switch as linear
output (see servo illustration). This allows for
proportional adjustment of servo position. This is
particularly useful for fuel mixture control on gas
engines.
Aux 2P
Assigns channel 3 (Auxiliary) to switch as 2-posi
-
tion output (see servo illustration). This is useful
for forward and reverse transmissions and some
2-speed transmissions.
Aux 3P
Assigns channel 3 (Auxiliary) to switch as 3-posi
-
tion output (see servo illustration). This is useful
for forward, neutral and reverse transmissions and
some dig transmissions.
Note:
Reverse and Travel Screens adjust
the endpoints and direction of the Auxiliary
channel.
ST Rate
Assigns Steering rate to a switch so a driver can
make on-the-ly steering travel adjustments. Steer
-
ing rate limits the amount of travel of the steering
servo
TMR ROSS
Timer and ROSS* assigned to right and left sides of
a switch.
ROSS TMR
ROSS and Timer assigned to right and left sides of
a switch.
TMR
Timer start, pause, stop and reset assigned to a
switch
ROSS
Remote start assigned to a switch
ST MIX
Steering mix assigned to a switch
Inhibit
No function assigned to switch
* LOSI ROSS (Remote Onboard Starting System)
A
Switch letter (see transmitter illustration)
B
Box shows around selected text
C
Function assigned to the switch
Note:
Assignment of switches in other screens changes what is
shown in this screen.
Note:
The factory default switch assignments are shown here.
Reset of the transmitter returns switch assignments to these
functions.
Switch
A:Aux 3P
B:TH trim
C:ST trim
D:TMR ROSS
E:ST Rate
A
B
C
1
2
3
100
2
1
1
3P (3 position)
Lin (Linear)
2P (2 position)
Steering Rate
Steering (ST) rate lets you quickly make steering travel adjust
-
ments using a designated switch (program switch A, B, C, D or E
on the
Switch Screen
). Steering rate limits the amount of travel
of the steering servo. Decreasing the rate decreases sensitivity
of steering control. Some drivers decrease this rate when driving
on an oval race course to decrease the amount of steering travel
‘on the ly’. You can adjust the rate between 0–100%. Factory
default setting is 100%. The rate cannot be greater than 100%
and will never exceed the amount of steering travel set in the
Travel Screen.
Note:
Refer to your model’s manual for recommended rate
settings.
A
Steering rate
B
Screen title
ST Rate
100%
B
A
