23
XF631 MANUAL • CHAPTER 6: Functions (System Mode)
CHAPTER 6: Functions (System Mode) continued
1.   Press the Scroll and Increase buttons 
up simultaneously and hold.
2.   Turn on the transmitter to enter the 
System mode.
3.   Press the Scroll button until “MD1” appears 
on the screen.
4.   Press the Increase or Decrease buttons to 
select the correct letter/number for the first 
character (flashing).
5.   To adjust the remaining 2 characters, press the 
Channel button until the desired character to be
adjusted is flashing.
6.   Press the Scroll button to access the modulation
select function.
7.   To exit, press the Scroll and Increase buttons up
simultaneously.
Accessing the Model Name Entry Function
Press the Channel
button to select the
character to be
changed (flashing).
Press the Increase or
Decrease buttons to
select the desired
character (A-Z, 1-9, etc.).
Flashing Character  includes
character to be adjusted
CURRENT MODEL
NUMBER
I
ACI
In System Setup mode,
press the Scroll button
until “MD1” appears on 
the screen.
The XF631 allows a 3-character name to be input for
each of the 3 models available. The current model
will be displayed in the normal display. This feature
is useful to help identify different aircraft types or 
model setups.
MODEL NAME ENTRY
• 
System Mode
6.4
MDI
I