Re: [time-nuts] quick and very dirty phase comparator

[EMAIL PROTECTED] wrote on 06/04/2008 08:05:16 PM: WB6BNQ wrote: Ulrich, One of things I noticed when playing with that DDS design tool is you can achieve the same output frequency using a different clock frequency, thus removing the spurs. THe trick is to look at clock

Re: [time-nuts] quick and very dirty phase comparator

Joseph M Gwinn wrote: [EMAIL PROTECTED] wrote on 06/04/2008 08:05:16 PM: WB6BNQ wrote: Ulrich, One of things I noticed when playing with that DDS design tool is you can achieve the same output frequency using a different clock frequency, thus removing the

Re: [time-nuts] quick and very dirty phase comparator

- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Bruce Griffiths Gesendet: Dienstag, 3. Juni 2008 01:29 An: Discussion of precise time and frequency measurement Betreff: Re: [time-nuts] quick and very dirty phase comparator Ulrich Bangert wrote: Kasper, I am impressed

Re: [time-nuts] quick and very dirty phase comparator

Ulrich Bangert wrote: Bruce, thank you for correcting me. Here I have clearly fooled myself. However your posting originated some new ideas: With the GCD becoming THAT low an analogue phase lock to a 10 MHz reference will not be easy. But if we stop to think about phase locked VCXOs we need

Re: [time-nuts] quick and very dirty phase comparator

Ulrich Bangert -Ursprungliche Nachricht- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Bruce Griffiths Gesendet: Mittwoch, 4. Juni 2008 10:44 An: Discussion of precise time and frequency measurement Betreff: Re: [time-nuts] quick and very dirty phase comparator

Re: [time-nuts] quick and very dirty phase comparator

Ulrich Bangert wrote: Bruce, Even a DDS followed by a PLL cleanup loop (10811 plus analog PD etc.) should work well although with a binary tuning word obtaining an exact 10.1MHz (or alternatively 9.9 MHz) output isnt possible. A DDS has some advantages over a synthesizer

Re: [time-nuts] quick and very dirty phase comparator

Griffiths Gesendet: Mittwoch, 4. Juni 2008 10:44 An: Discussion of precise time and frequency measurement Betreff: Re: [time-nuts] quick and very dirty phase comparator Ulrich Bangert wrote: Bruce, thank you for correcting me. Here I have clearly fooled myself. However your

Re: [time-nuts] quick and very dirty phase comparator

WB6BNQ wrote: Ulrich, One of things I noticed when playing with that DDS design tool is you can achieve the same output frequency using a different clock frequency, thus removing the spurs. THe trick is to look at clock frequencies that you can lock to your house reference for

Re: [time-nuts] quick and very dirty phase comparator

Since I am well familiar with the Analog Devices DDS circuits, this has been my very first idea. The most simple one for that purpose would be a AD9851 (180 MHz, 32 Bit, built in clock multiplier). But when I used the DDS design tool available on the AD web pages I received a big warning

Re: [time-nuts] quick and very dirty phase comparator

Betreff: Re: [time-nuts] quick and very dirty phase comparator Ulrich, One of things I noticed when playing with that DDS design tool is you can achieve the same output frequency using a different clock frequency, thus removing the spurs. THe trick is to look at clock frequencies

Re: [time-nuts] quick and very dirty phase comparator

PROTECTED] Im Auftrag von Kasper Pedersen Gesendet: Sonntag, 1. Juni 2008 16:07 An: Discussion of precise time and frequency measurement Betreff: [time-nuts] quick and very dirty phase comparator This is to poke my head in, and to share a simple multichannel phase comparator/monitor

Re: [time-nuts] quick and very dirty phase comparator

Ulrich Bangert wrote: Kasper, I am impressed a lot by the simplicity of your ideas. Added what Bruce has said to it I think the idea can even be improved by a) using a 12.288 MHz source for the micro. and b) using one (or two)external d-flip-flop(s) The GCD of 1000 Hz and 12288000

[time-nuts] quick and very dirty phase comparator

This is to poke my head in, and to share a simple multichannel phase comparator/monitor that turned out to be useful. I have a few homebuilt boxes that will do ~100ps timestamps, I have other uses for them, and tying them up with a single long term experiment is unacceptable. So I needed a phase

Re: [time-nuts] quick and very dirty phase comparator

Kasper Pedersen wrote: This is to poke my head in, and to share a simple multichannel phase comparator/monitor that turned out to be useful. I have a few homebuilt boxes that will do ~100ps timestamps, I have other uses for them, and tying them up with a single long term experiment is

Re: [time-nuts] quick and very dirty phase comparator

Kasper Pedersen wrote: This is to poke my head in, and to share a simple multichannel phase comparator/monitor that turned out to be useful. I have a few homebuilt boxes that will do ~100ps timestamps, I have other uses for them, and tying them up with a single long term experiment is

Re: [time-nuts] quick and very dirty phase comparator

Kasper Pedersen wrote: This is to poke my head in, and to share a simple multichannel phase comparator/monitor that turned out to be useful. I have a few homebuilt boxes that will do ~100ps timestamps, I have other uses for them, and tying them up with a single long term experiment is