You can only check the assignments using the 3-D 
digi-adjustor 4 3. The meaning of the displays is 
as follows: 
  0 = function cannot be transferred to the Pupil  
1 to 5 = channel used by Pupil transmitter  
   x R = Pupil signal reversed 
1.  Move one control at the Teacher transmitter
to one of the two end-points (Quick-Select) 
and then return it to centre (e.g. up-elevator). 
  The screen must show the code for the transmitter 
control you have moved. The channel number 0 or 
1 to 5 must flash. 
Example: throttle comes from channel 4 on the Pupil trans-
mitter, and is reversed. 
Functions which can be controlled by the Pupil: 
Code Fixed-wing Heli 
AI
Aileron Roll 
EL
Elevator Pitch-axis 
RU
Rudder Yaw 
TH
Throttle Collective pitch
SP
Spoiler Throttle Limiter
2. At the Pupil transmitter move the transmitter con-
trol to the same end-point, then return it to centre 
(including throttle and spoiler). 
3.  Repeat steps 1 and 2 until all the desired functions 
have been assigned. 
The assigning process can be concluded in two ways: 
a.  with a brief press r on the 3-D digi-adjustor; 
the ASSIGN menu re-appears. 
b.  with a long press ª on the 3-D digi-adjustor; 
this takes you to the INFO 1  display. The name of 
the selected model alternates with TEACHER. 
! Now check the direction of effect of all the 
model’s functions which are to be controlled 
by the Pupil. 
Changing the direction of effect or the assignment 
for the Pupil: 
a.  If you are no longer at the Assign menu: 
Move to the ASSIGN menu (see above) 
Open the menu with a brief press r on the 3-D 
digi-adjustor 
b.  Repeat steps 1 and 2 (see above). 
Erasing the assigned functions: 
a.  If you are no longer at the Assign menu: 
Move to the ASSIGN menu (see above) 
Open the menu with a brief press r on the 3-D 
digi-adjustor 
b.  Use the 3-D digi-adjustor (34) to select the con-
trol function; erase the assignment with a long 
press ª on the 3-D digi-adjustor (“0” appears next 
to the function). 
20.3.5.  Notes on Trainer mode operations 
! The TEACHER button must be held pressed in 
all the time the Pupil has control! 
! Check all the working systems before take-off! 
Check the direction and travel of all functions on 
the Teacher and
 Pupil transmitters. 
! Take care that nothing disturbs the concen-
tration and attention of the Pupil while he or 
she is flying the model! 
(spectators, other model pilots, ...)
21.  Accessories and spare parts 
Item Order No. 
Channel-Check PLUS, 35 MHz 
Channel-Check PLUS, 40 / 41 MHz 
 #  4 5174 
# 4 5175 
Transmitter aerial, 140 cm (standard)
 #  89 3001 
Stub aerial, 35 MHz 
Stub aerial, 40 / 41 MHz 
 #  7 5126 
# 7 5127 
Aerial ball-joint 
 #  7 5129 
Aluminium stick-tops 
 #  7 5304 
Tx. battery, 6 cells, NiMH, 1500 mAh 
 #  15 6001 
Transmitter case 
 #  76 3323 
Transmitter tray
 #  8 5306 
PROFI transmitter neckstrap 
 #  8 5646 
Padding for PROFI neckstrap 
 #  8 5641 
“Cross-over” transmitter support strap 
 #  8 5640 
Simulator interface lead, USB 
 #  8 5153 
Trainer lead (straight plug) 
Trainer lead (right-angled plug) (Î 20.) 
 #  8 5121 
# 8 5118 
For more information regarding accessories and re-
placement parts please refer to the current main cata-
logue or our Internet website: www.multiplex-rc.de. 
22.  Multi-function socket interfaces 
The multi-function socket of the COCKPIT SX has the 
following functions: 
•  Charging / discharging the transmitter battery  Î 8. 
•  Diagnosis mode  Î 22.1. 
•  PC socket for flight simulator  Î 22.2. 
22.1. Diagnosis mode 
A receiver can be controlled from the transmitter via 
cable, using what is known as diagnosis mode (direct 
servo control), without radiating an RF signal, e.g. if the 
channel is already in use by another modeller. Connect 
the transmitter (via the MULTIPLEX multi-function 
socket) to the receiver (via the charge socket on the 
switch harness # 8 5039 or # 8 5046) using the Diag-
nosis lead. Diagnosis mode is only possible with MUL-
TIPLEX receivers which feature a combined battery / 
diagnosis socket “B/D”. 
The connecting lead required is available from model 
shops under the Order No. # 8 5105.