Protech ZOOM 425 ccpm Specifications download pdf (Page 180)

Table 30.4. Mode 4 stick assignments

Joystick Direction Usage

left stick u/d throttle + pitch

left stick l/r left/right cyclic

right stick u/d fore/aft cyclic

right stick l/r rudder

30.1.2. Inside the transmitter

30.1.2.1. Throttle stick

The "throttle stick axis" (left stick, vertical motion in mode 2) controls both the throttle and col-

lective pitch channels.

The stick position goes through the throttle curve to generate the throttle channel, and the

same stick position also goes through the pitch curve to generate the collective pitch channel.

Note that there are usually two or more flight modes, such as normal, idle-up1, idle-up2, etc

and each flight mode usually has a programmable throttle and pitch curve.

30.1.2.2. Rudder stick

The rudder stick goes through the rudder exponential curve to generate the rudder signal. The

rudder expo curve can be used to decrease or increase the tail movement near center stick.

30.1.2.3. Fore/aft and left/right cyclic stick

First, the values for both cyclic sticks go through the elevator and aileron exponential curves.

If an eCCPM swashplate mode is enabled, then the output of these curves goes into the

swashplate mixer, and the signals for the three swashplate servos are generated.

If an eCCPM swashplate mode is not enabled, then the output of the aileron and elevator ex-

ponential curves go directly to the fore/aft and left/right swashplate servo channels.

30.1.3. From the transmitter to the lower swashplate

There are three systems which are widely used to control the lower swashplate from the trans-

mitter:

• Mechanical mixing (also known as mCCPM)

• Electronic mixing (also known as eCCPM)

• non-CCPM

30.1.3.1. Mechanical mixing (mCCPM)

For mechanical mixing, there are three servos that control the lower swashplate indirectly

through a mechanical mixer.

Technical Appendix

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Protech ZOOM 425 ccpm Specifications Page 180