DSM

From RC Helicopter Wiki

DSM and DSM2 are the Spektrum 2,4GHz microwave radio protocols.

Both are Direct Sequence Spread Spectrum (DSSS) technologies. When the receiver is bound to the transmitter, it learns the transmitter's unique identification code. When the transmitter is first switched on, it scans for two free channels and then broadcasts on both simultaneously. The receiver searches the channels for the two containing its transmitters identification code, and then receives data from just those two channels. If one channel is interrupted by interference, then the receiver will notice that the packet is corrupt and can continue working on one channel.

[edit] See also

• FASST.

[edit] External Links

• Spektrum "What is DSM" FAQ;
• Spektrum "What is the difference between DSM and DSM2" FAQ;
• Inside a DSM receiver.