The Modulation Selection Function enables your XP8
10
3 to 
transmit to a variety of JR receivers that are already
, or may soon 
be, in existence. Y
ou can select from either S-PCM or Z-PCM 
mode, depending on the Central Processing Unit within your 
receiver, or from PPM (Pulse Position Modulation—FM).  Refer to 
the receiver compatibility chart for the correct modulation.
 
Caution:
After making modulation changes, you must press
either the UP and DN, or the DN and SEL keys simultaneously to 
accept the new modulation type. If the Tx power switch is turned 
OFF
 
before this procedure, the modulation change will not be 
saved.
 
Receiver Compatibility Cha
e
 
Press the UP and DN keys or DN and
 
Select keys simultaneously to 
accept the new modutation type and 
to exit the S