16
Sub-Trim (Function Mode)
The Sub Trim function of the XR-2 is an electronic trimming
feature that allows the neutral position of the servo on either
the steering or throttle channel to be moved, while allowing
the electronic trim lever for that channel to remain in the cen-
ter position. This feature is very useful as it allows the servo
arm/wheel position to be moved to help with control linkage
installation, eliminating the need to make mechanical linkage
adjustments.
Although the Sub-Trim function is a very useful feature, it is
suggested that only small amounts of sub-trim be used so
that no unwanted, non-equal servo travel is created. It’s sug-
gested that less than 30 points of sub-trim be used during
adjustment. If more than 30 points of sub-trim are required,
it’s suggested that a mechanical linkage adjustment be per-
formed.
Accessing the Sub-Trim Function
To access the Sub-Trim function, follow the steps below:
1. Turn on the transmitter power switch.
2. Press the MODE key to enter the Function Mode.
3. Press the MODE key until SB-TRIM appears in small
letters to the left of the screen.
4. Press the CHANNEL key to select the channel to be
adjusted (ST= Steering, TH= Throttle).
5. Press the INCREASE or DECREASE keys until the proper
servo position is achieved.
6. Press the Mode key to access the Servo Reversing
function.
7. To exit the Function Mode, either turn off the transmitter
power switch or press the MODE and CHANNEL keys at
the same time.
MODE
ENTER
CHANNEL
INCREASE
CLEAR
+–
DECREASE
st
0
SB-TRM
Indicates current
channel
ST = Steering
TH = Throttle
Indicates current
value
Press the CHANNEL
key to select the
desired channel to be
adjusted
ST = Steering
TH = Throttle
Press the INCREASE or DECREASE keys to
achieve the desired sub-trim value
JR XR-2 7/15/99 8:35 AM Page 16
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