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50MHz Frequency Meter Mk.2
#80
(04-25-2019, 08:37 AM)ronovar Wrote: Još jedino bi bilo dobro ako ima koji PIC majstor da preradi ASM kod za brzi kristal da dobijemo brze osvjezavanje displaya, jer 1sekunda za do 16MHz je previše sporo osvjezavanje, kad bi moglo da se stavi umjesto 4MHz stavi 16Mhz kristal dobili bi očitanje sa 1sekunde na 250mS što bi bilo odlično i jako brzo. Mozda ici na 20MHz koliko PIC podrzava maximalno ali treba vidjeti stabilnost MCU i PIC freq unutarnju djeli sa 4 tako da bi 20MHz/4 dobili 5MHz i time smanjili vremena ocitavanja za :

- sa 0.1sec (do 150Hz) na 20ms
- sa 1sec (do 16MHz)   na 200ms
- sa 10sec (od 16MHz pa do 50MHz) na 2sec

Vjerojatno bi trebalo onda i 1pF VC1 staviti malo veću vrijednost (4p7) da bi se sve to uklopilo i to bi bilo odličan DIY frequency meter, naravno ne ciljamo ovdje na laboratorijski profi frequency meter jer za njega treba puno više logike i brzih MCU (blue pille, red pille...) tako da htio bih samo ako moze ko PIC ASM prilagoditi brzem kristalu i to bi bilo to. Za FG i ostale uredjaje u DIY varijanti gdje za malo novaca se dobije pristojan uredjaj.

Nije to bas tako. 1s je vremenska baza frekvencmetra a ne osvezavanje displeja. Znaci, koliko impulsa stane u jednu sekundu, tolika je frekvencija ulaznog signala. Trebalo bi preraditi kod da se ima promenljiva vremenska baza i to najbolje da bude autorange. Ako je neko voljan da pise, samo neka izvoli. Onaj Danyk-ov autorange f-metar (koji sam testirao) ima bug na oko 1KHz gde verovatno prelazi sa merenja frekvencije na merenje periode.
Jos jedna napomena. Ponovo idete na finalizaciju PCB-a a da pre toga uredjaj nije testiran na protobordu. To se pokazalo kao losa praksa pa bi je t rebalo ubuduce izbegavati. Ja nemam ovaj ECL MC10116 da bih izvrsio testiranje. Ako neko ima viska neka mi posalje pa cu se poigrati.
Probleme upravo ocekujem u ulaznom delu (pojacavac/uoblicavac) koji je jedan od najvaznijih sklopova F-metra.
Novac je sredstvo a ne cilj.
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Messages In This Thread
50MHz Frequency Meter Mk.2 - by ronovar - 03-25-2019, 10:23 AM
RE: 50MHz Frequency Meter Mk.2 - by emiSAr - 03-25-2019, 03:20 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 03-25-2019, 03:27 PM
RE: 50MHz Frequency Meter Mk.2 - by branko tod - 03-25-2019, 07:37 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 03-25-2019, 07:44 PM
RE: 50MHz Frequency Meter Mk.2 - by MILANNN - 03-25-2019, 07:50 PM
RE: 50MHz Frequency Meter Mk.2 - by MILANNN - 03-25-2019, 07:59 PM
RE: 50MHz Frequency Meter Mk.2 - by MILANNN - 03-25-2019, 07:54 PM
RE: 50MHz Frequency Meter Mk.2 - by MILANNN - 03-25-2019, 07:56 PM
RE: 50MHz Frequency Meter Mk.2 - by MILANNN - 03-25-2019, 07:58 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 03-25-2019, 08:01 PM
RE: 50MHz Frequency Meter Mk.2 - by Braca - 03-25-2019, 08:10 PM
RE: 50MHz Frequency Meter Mk.2 - by branko tod - 03-25-2019, 09:34 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 03-25-2019, 10:10 PM
RE: 50MHz Frequency Meter Mk.2 - by Milan94 - 03-25-2019, 10:39 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 03-25-2019, 10:43 PM
RE: 50MHz Frequency Meter Mk.2 - by MILANNN - 03-25-2019, 11:12 PM
RE: 50MHz Frequency Meter Mk.2 - by MILANNN - 03-25-2019, 11:13 PM
RE: 50MHz Frequency Meter Mk.2 - by MILANNN - 03-25-2019, 11:15 PM
RE: 50MHz Frequency Meter Mk.2 - by Gosha - 03-25-2019, 11:19 PM
RE: 50MHz Frequency Meter Mk.2 - by MILANNN - 03-25-2019, 11:19 PM
RE: 50MHz Frequency Meter Mk.2 - by MILANNN - 03-25-2019, 11:21 PM
RE: 50MHz Frequency Meter Mk.2 - by MILANNN - 03-25-2019, 11:22 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 03-25-2019, 11:24 PM
RE: 50MHz Frequency Meter Mk.2 - by emiSAr - 03-25-2019, 11:32 PM
RE: 50MHz Frequency Meter Mk.2 - by Braca - 03-26-2019, 12:12 AM
RE: 50MHz Frequency Meter Mk.2 - by branko tod - 03-26-2019, 08:19 AM
RE: 50MHz Frequency Meter Mk.2 - by mikikg - 03-26-2019, 08:48 AM
RE: 50MHz Frequency Meter Mk.2 - by branko tod - 03-26-2019, 09:29 AM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 03-26-2019, 09:55 AM
RE: 50MHz Frequency Meter Mk.2 - by emiSAr - 03-26-2019, 12:23 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 03-26-2019, 08:51 PM
RE: 50MHz Frequency Meter Mk.2 - by PeceMK - 03-26-2019, 09:43 PM
RE: 50MHz Frequency Meter Mk.2 - by gorankg - 03-26-2019, 10:37 PM
RE: 50MHz Frequency Meter Mk.2 - by branko tod - 03-27-2019, 12:02 AM
RE: 50MHz Frequency Meter Mk.2 - by Gosha - 03-27-2019, 06:59 AM
RE: 50MHz Frequency Meter Mk.2 - by branko tod - 03-27-2019, 08:05 AM
RE: 50MHz Frequency Meter Mk.2 - by Gosha - 03-27-2019, 09:40 AM
RE: 50MHz Frequency Meter Mk.2 - by mikikg - 03-27-2019, 09:43 AM
RE: 50MHz Frequency Meter Mk.2 - by branko tod - 03-27-2019, 10:13 AM
RE: 50MHz Frequency Meter Mk.2 - by mikikg - 03-27-2019, 10:29 AM
RE: 50MHz Frequency Meter Mk.2 - by gorankg - 03-27-2019, 10:48 AM
RE: 50MHz Frequency Meter Mk.2 - by progster - 03-28-2019, 09:41 PM
RE: 50MHz Frequency Meter Mk.2 - by branko tod - 03-27-2019, 12:07 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 03-27-2019, 01:05 PM
RE: 50MHz Frequency Meter Mk.2 - by gorankg - 03-27-2019, 02:08 PM
RE: 50MHz Frequency Meter Mk.2 - by mikikg - 03-27-2019, 03:03 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 03-27-2019, 04:59 PM
RE: 50MHz Frequency Meter Mk.2 - by MILANNN - 03-27-2019, 09:36 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 03-28-2019, 02:43 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 03-28-2019, 08:09 PM
RE: 50MHz Frequency Meter Mk.2 - by branko tod - 03-29-2019, 12:13 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 03-29-2019, 12:20 PM
RE: 50MHz Frequency Meter Mk.2 - by branko tod - 03-29-2019, 08:38 PM
RE: 50MHz Frequency Meter Mk.2 - by gorso69 - 03-29-2019, 07:12 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 03-29-2019, 08:04 PM
RE: 50MHz Frequency Meter Mk.2 - by vojinilic - 03-29-2019, 10:31 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 03-29-2019, 11:08 PM
RE: 50MHz Frequency Meter Mk.2 - by branko tod - 03-30-2019, 08:49 AM
RE: 50MHz Frequency Meter Mk.2 - by gorankg - 03-30-2019, 10:14 AM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 04-23-2019, 09:04 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 04-24-2019, 10:05 PM
RE: 50MHz Frequency Meter Mk.2 - by me[R]a - 04-24-2019, 10:29 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 04-24-2019, 10:41 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 04-25-2019, 08:37 AM
RE: 50MHz Frequency Meter Mk.2 - by Gosha - 04-25-2019, 09:21 AM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 04-25-2019, 10:25 AM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 04-25-2019, 11:06 AM
RE: 50MHz Frequency Meter Mk.2 - by vojinilic - 04-25-2019, 06:03 PM
RE: 50MHz Frequency Meter Mk.2 - by ZASto - 04-25-2019, 06:33 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 04-25-2019, 07:13 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 05-28-2019, 10:12 PM
RE: 50MHz Frequency Meter Mk.2 - by Braca - 05-29-2019, 09:47 AM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 06-01-2019, 11:34 AM
RE: 50MHz Frequency Meter Mk.2 - by Khadgar2007 - 06-01-2019, 11:43 AM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 06-01-2019, 11:51 AM
RE: 50MHz Frequency Meter Mk.2 - by Khadgar2007 - 06-01-2019, 11:58 AM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 06-01-2019, 12:08 PM
RE: 50MHz Frequency Meter Mk.2 - by emiSAr - 06-01-2019, 03:20 PM
RE: 50MHz Frequency Meter Mk.2 - by Braca - 06-01-2019, 03:42 PM
RE: 50MHz Frequency Meter Mk.2 - by Gosha - 06-12-2019, 10:45 PM
RE: 50MHz Frequency Meter Mk.2 - by Braca - 06-13-2019, 08:52 AM
RE: 50MHz Frequency Meter Mk.2 - by Gosha - 06-13-2019, 09:48 AM
RE: 50MHz Frequency Meter Mk.2 - by gorankg - 06-13-2019, 09:32 AM
RE: 50MHz Frequency Meter Mk.2 - by Braca - 06-18-2019, 01:12 PM
RE: 50MHz Frequency Meter Mk.2 - by Khadgar2007 - 06-18-2019, 01:31 PM
RE: 50MHz Frequency Meter Mk.2 - by tomam - 06-18-2019, 02:07 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 06-18-2019, 02:32 PM
RE: 50MHz Frequency Meter Mk.2 - by Khadgar2007 - 06-18-2019, 07:46 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 06-18-2019, 09:50 PM
RE: 50MHz Frequency Meter Mk.2 - by Braca - 06-18-2019, 08:18 PM
RE: 50MHz Frequency Meter Mk.2 - by Khadgar2007 - 06-18-2019, 09:53 PM
RE: 50MHz Frequency Meter Mk.2 - by Braca - 06-19-2019, 10:42 AM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 06-19-2019, 11:02 AM
RE: 50MHz Frequency Meter Mk.2 - by Braca - 06-19-2019, 05:38 PM
RE: 50MHz Frequency Meter Mk.2 - by Khadgar2007 - 06-19-2019, 05:46 PM
RE: 50MHz Frequency Meter Mk.2 - by gorso69 - 06-22-2019, 12:46 PM
RE: 50MHz Frequency Meter Mk.2 - by Khadgar2007 - 06-22-2019, 01:12 PM
RE: 50MHz Frequency Meter Mk.2 - by Braca - 06-22-2019, 02:53 PM
RE: 50MHz Frequency Meter Mk.2 - by Khadgar2007 - 06-22-2019, 03:19 PM
RE: 50MHz Frequency Meter Mk.2 - by Braca - 06-22-2019, 04:01 PM
RE: 50MHz Frequency Meter Mk.2 - by Khadgar2007 - 06-22-2019, 04:09 PM
RE: 50MHz Frequency Meter Mk.2 - by Braca - 06-22-2019, 04:18 PM
RE: 50MHz Frequency Meter Mk.2 - by Braca - 07-09-2019, 11:15 AM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 07-24-2019, 10:06 PM
RE: 50MHz Frequency Meter Mk.2 - by emiSAr - 07-24-2019, 11:36 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 04-09-2020, 10:57 PM
RE: 50MHz Frequency Meter Mk.2 - by Khadgar2007 - 04-10-2020, 12:21 AM
RE: 50MHz Frequency Meter Mk.2 - by Braca - 04-10-2020, 08:06 AM
RE: 50MHz Frequency Meter Mk.2 - by branko tod - 04-10-2020, 09:45 AM
RE: 50MHz Frequency Meter Mk.2 - by emiSAr - 04-10-2020, 09:59 AM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 04-10-2020, 11:29 AM
RE: 50MHz Frequency Meter Mk.2 - by branko tod - 04-10-2020, 06:51 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 04-18-2020, 11:16 AM
50MHz Frequency Meter Mk.2 - by ronovar - 03-25-2019, 02:25 PM
RE: 50MHz Frequency Meter Mk.2 - by ronovar - 03-25-2019, 03:13 PM

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