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Eddy71ua
Joined: 23 Sep 2009 Posts: 55 Location: Ukraine
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Posted: Tue Jun 20, 2023 12:00 am |
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I agree, the number is very large. But modern radio communications operate on very high frequencies. Normal WiFi operates at 5,600,000,000 or so frequencies. And that doesn't fit into 32 bits...
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Ttelmah
Joined: 11 Mar 2010 Posts: 19358
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Posted: Tue Jun 20, 2023 12:09 am |
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Yes, but you then have to think of the real resolution. Normal crystals
only manage 10ppm. So taking a reading with more than 5 digits is
basically fallacious. Even a TCXO will normally only go to 1ppm. So 6
usable digits. A good OCXO can push you to 0.05PPM, so 7.5 usable
digits of resolution. It is fundamentally pointless to be handling and counting
more digits than actually mean anything. You appear to be trying to
achieve resolution beyond your actually accuracy. Needs thinking about.... |
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Eddy71ua
Joined: 23 Sep 2009 Posts: 55 Location: Ukraine
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Posted: Tue Jun 20, 2023 3:46 am |
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As a reference oscillator is used quality TCXO 10 MHz + calibration by GPS-receiver. |
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temtronic
Joined: 01 Jul 2010 Posts: 9168 Location: Greensville,Ontario
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Posted: Wed Jun 21, 2023 5:03 am |
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I'd still like a 'link' to the actual 'counter code'/ article / hardware. Most frequency counters I've seen/ made over the decades had 'ranges' based upon frequency of interest, so I'm curious as to how your 'counter code' actually samples a 5GHz signal down to the Hz. |
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Eddy71ua
Joined: 23 Sep 2009 Posts: 55 Location: Ukraine
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Posted: Thu Jun 22, 2023 3:16 am |
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I can't show you the code. But nothing revolutionary. The ADF4106 prescaler is used to work with the upper ranges. And of course mathematical processing of the accumulated results. |
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PrinceNai
Joined: 31 Oct 2016 Posts: 463 Location: Montenegro
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Posted: Thu Jun 22, 2023 3:54 am |
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I'm not that much interested in the code or hardware. I'd just like to see those five bytes and into what they need to translate. So input and the desired output. |
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Ttelmah
Joined: 11 Mar 2010 Posts: 19358
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temtronic
Joined: 01 Jul 2010 Posts: 9168 Location: Greensville,Ontario
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Posted: Thu Jun 22, 2023 6:15 am |
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hmmm, isn't this the exact thing that 'AI' everyone raves about is supposed to be able to do ???
I agree with the Prince, gotta SEE the input data to decide how best to convert to desired output. |
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Ttelmah
Joined: 11 Mar 2010 Posts: 19358
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Posted: Thu Jun 22, 2023 6:21 am |
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Yes, some real data about the layout of the bytes is really essential to
answering at all well.... |
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