User Manual

Appendix E – Receiver selection
To achieve the most accurate flight characteristics, the order of preference for Receiver selection is:
• Standard
• CPPM
• DSM Satellite
• SBus
The reason for the above is the interrupt processing that is required to process the receiver channel
output increases as you go down the list. Interrupts that occur during the software PWM loop that
generates the output pulses on M1 to M8 need to be kept as short as possible to minimise the jitter.
Standard receivers will cause the least jitter, SBus the most. It also causes jitter in the self level
calculation resulting in the KK2.1.X knowing exactly which way is “up”.
If you only have motors and don’t use Self Level, you probably won’t notice any issues with SBus.
If you have servos connected to M1-M6 you will notice some jitter with Satellites and SBus.