Re: [time-nuts] OCXO PLL gains?

Hi Not a clue, my copy is 40 years old :) Bob > On Feb 8, 2019, at 9:19 AM, Adrian Godwin wrote: > > On Fri, Feb 1, 2019 at 8:09 PM Bob kb8tq wrote: > >> Gardner: >> >> https://www.amazon.com/Phaselock-Techniques-Floyd-M-Gardner/dp/0471430633 >>

Re: [time-nuts] OCXO PLL gains?

On Fri, Feb 1, 2019 at 8:09 PM Bob kb8tq wrote: > Gardner: > > https://www.amazon.com/Phaselock-Techniques-Floyd-M-Gardner/dp/0471430633 > > > > is an oldie but goodie in this area. > > The current (3rd) edition of this

Re: [time-nuts] OCXO PLL gains?

- Original Message - >> From: ew >> To: time-nuts@lists.febo.com >> Cc: j.koe...@bluewin.ch >> Sent: Sunday, February 03, 2019 5:26 AM >> Subject: Re: [time-nuts] OCXO PLL gains? >> >> There is a need for clean up loops across time-nuts appli

Re: [time-nuts] OCXO PLL gains?

f Of Richard (Rick) Karlquist Sent: Sunday, February 3, 2019 8:41 AM To: Magnus Danielson ; Discussion of precise time and frequency measurement Subject: Re: [time-nuts] OCXO PLL gains? On 2/2/2019 3:06 PM, Magnus Danielson wrote: >> We also used a double integrator >> on t

Re: [time-nuts] OCXO PLL gains?

Hi Rick, On 2019-02-02 17:49, Richard (Rick) Karlquist wrote: On 2/1/2019 3:22 PM, Magnus Danielson wrote: The Gardner book is the one book I recommend. Few books has core knowledge so well compressed. If one only gets one book, this would be the one I would recommend. Cheers, Magnus

Re: [time-nuts] OCXO PLL gains?

On 2/2/2019 3:06 PM, Magnus Danielson wrote:   We also used a double integrator on the 5071A cesium standard, but cesium loops are NOT PLL's. Indeed, double-integrator in FLL is a separate class of problems. Didn't know it had double-integrator. Cheers, Magnus The 5061 had an analog

Re: [time-nuts] OCXO PLL gains?

On 2/1/2019 3:22 PM, Magnus Danielson wrote: The Gardner book is the one book I recommend. Few books has core knowledge so well compressed. If one only gets one book, this would be the one I would recommend. Cheers, Magnus I'm glad someone mentioned this classic. 45 years ago, this was

Re: [time-nuts] OCXO PLL gains?

I learned a useful rule of thumb design procedure for 2nd degree PLLs some time ago (I'll speak in the context of using an inverting op-amp in the loop gain/filter stage): Step 1: Short the capacitor in the opamp's FB loop, then set the resistor so that the PLL has the desired loop bandwidth.

Re: [time-nuts] OCXO PLL gains?

Hej Anders, On 2019-02-01 19:11, Anders Wallin wrote: Hi all, is there are rule-of-thumb or simple paper/presentation of how to choose PLL-gains? I have a phase-detector that gives out a slope of roughly 1 V/rad, followed by an op-amp circuit with proportional, integral, and double-integral

Re: [time-nuts] OCXO PLL gains?

Hi I’m sure there is a closed form solution somewhere out there that includes noise. It is more common to do it with simulation by one method or another. You normally have a lot going on in a PLL. Simple answer is - less gain = less bandwidth. If what you have is too wide, cut it down.

Re: [time-nuts] OCXO PLL gains?

Hi Anders look that https://www.analog.com/media/ru/training-seminars/tutorials/MT-086.pdf 73 KJ6UHN Alex On 2/1/2019 10:11 AM, Anders Wallin wrote: Hi all, is there are rule-of-thumb or simple paper/presentation of how to choose PLL-gains? I have a phase-detector that gives out a slope

Re: [time-nuts] OCXO PLL gains?

On 2/1/19 10:11 AM, Anders Wallin wrote: Hi all, is there are rule-of-thumb or simple paper/presentation of how to choose PLL-gains? I have a phase-detector that gives out a slope of roughly 1 V/rad, followed by an op-amp circuit with proportional, integral, and double-integral gains summed

[time-nuts] OCXO PLL gains?

Hi all, is there are rule-of-thumb or simple paper/presentation of how to choose PLL-gains? I have a phase-detector that gives out a slope of roughly 1 V/rad, followed by an op-amp circuit with proportional, integral, and double-integral gains summed into one voltage [0, 3.3V] on the tune-pine of