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Si5351 VFO/BFO
#27
Vidim taj Amanero ima XMOS i par oscilatora:

[Image: attachment.php?aid=37456]

Hmm, to su nezgodne frekvencije, "opasne frekvencije" : ) vrlo specifične za DAC-ove, tu treba da ide fiksni oscilator sa što manjim faznim šumom bez PLL-a i to je generalno sve vrlo problematično i zahtevno i opet ne garantuje sinhronizovan rad sa ostatkom sistema ...

Jedino pismeno rešenje je upotrebiti WORD clock distribuirani sistem za sve Audio sprave u lancu, dakle postoji jedno mesto gde se generiše stabilna potrebna frekvencija i to se onda distribuira od sprave do sprave, sve ozbiljnije psrave imaju WORD clock ulaz i to je najbolje rešenje, sve je sinhronizovano, nisu potrebni bufferi i re-clocking koji se koriste zbog problema sa sinhronizacijom i generalno je tako sve na svom mestu.

U ozbiljnim metrološkim laboratorijama na primer postoji isto tako jedno centralno mesto gde se generiše super-mega-stabilna frekventna referenca preko Ceziumskih satova/oscilatora koji daju tačno 10MHz frekvenciju i to se posle preko BNC i koaksialnih kablova i distributivnih pojačavača razvlači po celoj zgradi i svaka kanceliraija ima pristup tom izvoru da koriste za razne sprave, sve imaju uglavnom 10MHz referentni ulaz i tako se to radi na propisan način.


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Messages In This Thread
Si5351 VFO/BFO - by mikikg - 03-26-2022, 12:01 PM
RE: Si5351 VFO/BFO - by mikikg - 03-26-2022, 12:36 PM
RE: Si5351 VFO/BFO - by ELFI - 03-26-2022, 01:03 PM
RE: Si5351 VFO/BFO - by mikikg - 03-26-2022, 01:24 PM
RE: Si5351 VFO/BFO - by mikikg - 03-26-2022, 01:50 PM
RE: Si5351 VFO/BFO - by progster - 03-26-2022, 02:30 PM
RE: Si5351 VFO/BFO - by mikikg - 03-26-2022, 02:45 PM
RE: Si5351 VFO/BFO - by mikikg - 03-26-2022, 03:29 PM
RE: Si5351 VFO/BFO - by Gosha - 03-26-2022, 04:45 PM
RE: Si5351 VFO/BFO - by mikikg - 03-26-2022, 09:42 PM
RE: Si5351 VFO/BFO - by mikikg - 03-26-2022, 11:03 PM
RE: Si5351 VFO/BFO - by mikikg - 03-26-2022, 11:35 PM
RE: Si5351 VFO/BFO - by dlalkovic - 03-27-2022, 08:27 AM
RE: Si5351 VFO/BFO - by Macola - 03-27-2022, 09:46 AM
RE: Si5351 VFO/BFO - by mikikg - 03-27-2022, 11:33 AM
RE: Si5351 VFO/BFO - by gorankg - 03-27-2022, 07:43 PM
RE: Si5351 VFO/BFO - by mikikg - 04-17-2022, 05:10 PM
RE: Si5351 VFO/BFO - by mikikg - 04-18-2022, 01:56 PM
RE: Si5351 VFO/BFO - by mikikg - 04-18-2022, 03:40 PM
RE: Si5351 VFO/BFO - by mikikg - 04-19-2022, 11:06 PM
RE: Si5351 VFO/BFO - by mikikg - 04-20-2022, 08:10 PM
RE: Si5351 VFO/BFO - by savan - 04-21-2022, 07:47 PM
RE: Si5351 VFO/BFO - by mikikg - 04-21-2022, 09:45 PM
RE: Si5351 VFO/BFO - by mikikg - 04-21-2022, 10:10 PM
RE: Si5351 VFO/BFO - by savan - 04-22-2022, 10:41 AM
RE: Si5351 VFO/BFO - by mikikg - 04-22-2022, 10:57 AM
RE: Si5351 VFO/BFO - by mikikg - 04-22-2022, 12:28 PM
RE: Si5351 VFO/BFO - by savan - 04-22-2022, 02:21 PM
RE: Si5351 VFO/BFO - by ddanijel - 04-22-2022, 05:04 PM
RE: Si5351 VFO/BFO - by savan - 04-22-2022, 06:33 PM
RE: Si5351 VFO/BFO - by gorankg - 04-22-2022, 06:44 PM
RE: Si5351 VFO/BFO - by savan - 04-22-2022, 07:00 PM
RE: Si5351 VFO/BFO - by mikikg - 04-22-2022, 07:27 PM
RE: Si5351 VFO/BFO - by savan - 04-22-2022, 07:55 PM
RE: Si5351 VFO/BFO - by mikikg - 04-22-2022, 08:17 PM
RE: Si5351 VFO/BFO - by savan - 04-22-2022, 09:23 PM
RE: Si5351 VFO/BFO - by mikikg - 04-22-2022, 10:16 PM
RE: Si5351 VFO/BFO - by mikikg - 04-22-2022, 11:07 PM
RE: Si5351 VFO/BFO - by savan - 04-23-2022, 07:23 AM
RE: Si5351 VFO/BFO - by mikikg - 04-23-2022, 11:22 AM
RE: Si5351 VFO/BFO - by savan - 04-23-2022, 12:46 PM
RE: Si5351 VFO/BFO - by mikikg - 04-23-2022, 02:33 PM
RE: Si5351 VFO/BFO - by savan - 04-23-2022, 02:46 PM
RE: Si5351 VFO/BFO - by mikikg - 04-23-2022, 03:28 PM
RE: Si5351 VFO/BFO - by mikikg - 04-23-2022, 03:57 PM
RE: Si5351 VFO/BFO - by savan - 04-23-2022, 04:24 PM
RE: Si5351 VFO/BFO - by mikikg - 04-23-2022, 04:49 PM
RE: Si5351 VFO/BFO - by savan - 04-23-2022, 05:33 PM
RE: Si5351 VFO/BFO - by mikikg - 04-23-2022, 05:44 PM
RE: Si5351 VFO/BFO - by mikikg - 04-24-2022, 01:00 AM
RE: Si5351 VFO/BFO - by savan - 04-24-2022, 08:55 AM
RE: Si5351 VFO/BFO - by mikikg - 04-24-2022, 10:07 AM

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