Multiplex Profi TX Operating Instructions Manual page 223

Seite 220
develops. The teacher transmitter carries out all the data processing. This
means that the student transmitter (depending on the type used) simply
needs to be switched to "Student" mode. No further configuration or
programming is required. All the teacher transmitter needs from the student
transmitter are the pure stick signals.
Trimming
Adjustment of the model aircraft to fly straight and level when you leave the
sticks exactly at centre.
Standard trim
Shifts the entire setting range of the stick in parallel up and down (by the trim
value). To allow this shift without limiting the control signal, the control signal
must be reduced by the maximum trim value possible. Thus, unlike centre
trim, the servo travel cannot be fully used.
Variometer
Device in the model aircraft that indicates the climbing and descending rate
through audible signals.
Appendix
PROFI TX