Return to KLUBNL.PL main page

rsgb_lf_group
[Top] [All Lists]

Re: Re: LF: GRABBER

To: rsgb_lf_group@blacksheep.org
Subject: Re: Re: LF: GRABBER
From: Andy Talbot <andy.g4jnt@gmail.com>
Date: Thu, 10 Mar 2011 16:42:49 +0000
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:in-reply-to:references:date :message-id:subject:from:to:content-type; bh=o6sdhdDl0Nuu7ZqzZrpkU/ed/S2jdCrcwI4M30O/Zos=; b=C/iEN7WqTr1lseHr7o60Fhoy9F9s/vkRzIydubemLZILXMNApFQWmR1kGSIm1IIfKC 8EF1Kwsmxt1UNKLadT+EQRs8iO7xTpYLe66ustqK8x3shTEC7nLwGlEiY14J+ymDjA3M M5OLk/So5KdFgqnl284+GwKRjxQppcrWoYyq0=
Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=hmPGg71W4pZ4I19R9CAydwjSyu0w7WCHfFHm1K2AGzLk8Uq2jxaZE88m0xZaJx9guP mt00ZvbSWZ0F6TKivSN6QSQAiDMRPCfNNa/BGwsGdPho+isQeRoKt6rbZ1RyEH6wwfgO Kl1zwrHZE4kL4FV3YmbD+MTKqHYfieLdzSRUc=
Domainkey-status: good (testing)
In-reply-to: <520894233e2f4e6e9b7934761a24682d@kabelmail.de>
References: <520894233e2f4e6e9b7934761a24682d@kabelmail.de>
Reply-to: rsgb_lf_group@blacksheep.org
Sender: owner-rsgb_lf_group@blacksheep.org
I think we have developed similar hardware with different processors:
 
What size A/D and sine lookup table do you use ?
 
Andy
G4JNT


 

no divider in use. the accurate sine wave is generated by the high speed microcontroller AT90S2313followed by a R matrixc and a  lowpass filter cutqrg 10kHz.

the phase is GPS sychronized. the time is locked to GPS 1pps.

negative: the resolution (step size) is 0,3mHz (32-bit). theoretically. really: 63xmHz. the eeprom doesnt take any notice of the last two signs of the HEX group. so it can generate near 8970,000Hz:  8970,022xHz or 8969,959xHz.

<Prev in Thread] Current Thread [Next in Thread>