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Chapter 6: Radio-Controlled Systems and Telemetr y             143



























                             Figure 6.16  The AR8000 50% throttle channel output.


                                I also captured the waveforms at the throttle 50% setting, which was set using the
                             marked midpoint of the throttle control. Figure 6.16 shows a pulse width of 1.50 ms and
                             22-ms period.
                                The corresponding power pulses for the 50% setting are shown in Figure 6.17. Notice
                             that it is considerably noisier than the 100% power waveform. I am not sure why this is the
                             case, but it may be due in part to a longer cycle time of 800 microseconds (µsec) versus
                             700 µsec for the 100% power setting.




























                             Figure 6.17  ESC motor waveform at 50% power.
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