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Re: [Discuss-gnuradio] pll_refout_cc - finding optimum alpha & beta ??

From: Matt Ettus
Subject: Re: [Discuss-gnuradio] pll_refout_cc - finding optimum alpha & beta ??
Date: Fri, 17 Mar 2006 10:48:24 -0800
User-agent: Thunderbird 1.5 (X11/20051201)

> It just seeemd strange to me that a very large number, d_freq, which is
> bounds limited to between d_min_freq and d_max_freq, is inside a
> function trying to limit it's output to between +PI and -PI.
> if(100e3 > M_PI)
>   return(100e3-M_TWOPI) 
> or 99993.7168...   error can get close to zero, but frequency will
> never be less than d_freq_min.

d_freq is not in Hz.  It needs to be in radians per sample, which should
always be less than PI.


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