Dear sir :
Thanks for your reply.
There are still some problems:
1.If the receive signal is noise ,due to its low power ,it will go to state 2(low power)-> state2A(increase gain)
so it will finally amplify all the noise signal and adjust it to signal target level, is it correct?
2.Is there any way to avoid amplify noise?
3. Are LMT small overload and lowpower threshold used for buried signal?
3.In the normal case, how to set the initial gain before agc module start?
Thanks ~