ROBBE ARCUS SONIC RTF Operating Instructions Manual page 10

"Primary" and "expanded" control function setting
The transmitter offers the facility to adjust the sensitivity
of the stick movements. We recommend "softer" reduced
travels for beginners.
Open the transmitter battery compartment and insert the
eight fully-charged NiMH cells (check for correct polarity).
Switching sensitivity:
Switch the transmitter on.
Reduced control function:
Locate the toggle switch at top
right of the transmitter, and move it
down. The "Status indicator, Dual
Rate" disc is reduced to half.
Enlarged control function:
Locate the toggle switch at top
right of the transmitter, and move
it up. The "Status indicator, Dual
Rate" disc is shown in full.
10
Operating instructions - ARCUS SONIC RTF 2.4 GHz No. 2565
Converting the transmitter from "Mode 2" (throttle
left) to "Mode 1" (throttle right)
The transmitter is supplied set to Mode 2 as standard. If
you prefer Mode 1 and wish to convert the transmitter to
that mode, use this procedure:
The transmitter must be switched off.
Locate the central cover over the battery compartment in
the rear of the transmitter, and open it by pressing both
retaining clips together using two fingers. Lift the cover up
and off.
The toggle switches located under the cover are used to
select Mode 1 and Mode 2:
Toggle switch up = Mode 1
Toggle switch down = Mode 2
You can now close the battery cover and switch the trans-
mitter on. The screen displays the new setting.
Status indicator, mode select
Dual-Rate status indicator
(see left)