en:acounter
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+ | Atomic counter is a frequency counter designed for an accurate frequency measurements. It has a PPS output from GPS used as a frequency normal ((GPS satellites have several atomic clocks onboard, hence the name ‘atomic’ counter)). Its construction is now implemented in two variants: | ||
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+ | * ACOUNTER01A - Produced using [[en: | ||
+ | * ACOUNTER02A - Produced using microcontroller [[en: | ||
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+ | Accuracy of both variants is determined by a used GPS and a quality of incoming signal. However, generally, each measurement needs to be averaged over a longer time period, because the time stamps only have a short-term accuracy in order of tenths of ns. Individual measurements can therefore have a relatively wide Gaussian scattering, which has to be eliminated by averaging. | ||
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+ | ===== ACOUNTER01A ===== | ||
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+ | {{ : | ||
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+ | This version work up to approximately 600 MHz. | ||
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+ | ==== Construction ==== | ||
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+ | Atomic counter contains following modules: | ||
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+ | * [[en: | ||
+ | * [[en: | ||
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+ | ===== ACOUNTER02A ===== | ||
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+ | {{ : | ||
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+ | Using [[en: | ||
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+ | ===== Related articles ===== | ||
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+ | * [[en: |
en/acounter.txt · Last modified: 2018/12/15 13:57 (external edit)