Originally Posted by
DaveLeeNC
Just one more question for anyone. I spent about 15 minutes Googling through Ant+ information. It sounds to me like an Ant+ sensor in a typical bike scenario (speed, cadence, etc) is unidirectional (sensor cannot receive) and therefore it is always sending information. Power drain becomes manageable because Ant+ power levels are quite low and information is sent in very short bursts (zero output power most of the time regardless).
Is there something else going on here?
Thanks.
dave
As I said earlier, the sensor ony transmit (they don't recieve). There is nothing useful they can receive.
The sensors have two modes/states: a sleeping mode and an active mode. The sleeping mode transmits nothing. In the sleeping mode, the sensor checks for movement in a way that conserves power. It's possible that the active state is doing funky things to reduce power demands.
Keep in mind that the basic idea of ANT is that the sensors provide very basic data in a way that uses minimal power and that it's the head unit that does anything complicated.
I'm not sure what else you think could be going on.