Thanks very much Lyle! I see (said the blind man).
So if you connected a meter to the hardware AGC you would normally see no voltage at typical received signal levels and that ADC might see increasing voltage all the way up to it's tolerance before the hardware AGC would jump in at with some hard value (like turning on RF ATTN) to protect the ADC. But none of this affects what the operator hears as AGC or sees on the S Meter, that's all calculated from the DSP. ? Or does the DSP use any info from whats going on in the analog stage to influence it's behavior and/or displayed indications. ------------------------------------ [Elecraft] K3 AGC Design Question Lyle Johnson kk7p at wavecable.com Fri Sep 21 23:34:19 EDT 2007 > Question please - is the hardware AGC preceeding the > DSP active only in excessive signal scenerios to keep > the DSP from becoming overloaded Delete the word "only" and change DSP to ADC you've got that part correctly understood :-) It is used to protect the IF Analog to Digital converter from over ranging under extreme signal conditions. > or can the hardware > AGC be activated at normal signal levels by the K3 > firmware to work in conjunction with the AGC algorithm > in the DSP stage? The DSP can intervene when appropriate. 73, Lyle KK7P _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
