<div dir="ltr">Budu mit signal, ktery je rekneme od 99 do 101MHz, sirka pasma je tedy 2MHz. Ja rikam, ze muzu vzorkovat kmitoctem nizsim nez 202MHz (klasicka podminka). <br>Za podminek:<br>Fs musi byt vetsi nez 2MHz<br>Ozrcadlene periodicke spektrum se nesmi prekryvat.<br>
<br>PK<br><br><div class="gmail_quote">On Thu, Jul 31, 2008 at 4:57 PM, <span dir="ltr"><nesvacil@posys.eu></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div bgcolor="#ffffff">
<div><font face="Arial" size="2">Budto tomu nerozumi a nebo pisete nesmysl. Na
zacatku pisete, ze se da vzrokovat nizsim signalem, ale vzapeti uvadite, ze
"<font face="Times New Roman" size="3">Vzorkovaci kmitocet musi byt vetsi nez
sirka pasma</font>" neboli pisete, ze vysledny signal, ktery vzrokuji je VZDY
nizsi a to dle pravidla minimalne 1/2.</font></div>
<div><font face="Arial" size="2"></font> </div>
<div><font face="Arial" size="2">Jirka</font></div>
<blockquote style="border-left: 2px solid rgb(0, 0, 0); padding-right: 0px; padding-left: 5px; margin-left: 5px; margin-right: 0px;"><div class="Ih2E3d">
<div style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;">----- Original Message ----- </div>
<div style="background: rgb(228, 228, 228) none repeat scroll 0% 0%; -moz-background-clip: -moz-initial; -moz-background-origin: -moz-initial; -moz-background-inline-policy: -moz-initial; font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;">
<b>From:</b>
<a title="krepa76@gmail.com" href="mailto:krepa76@gmail.com" target="_blank">Pavel KREJCI</a>
</div>
<div style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;"><b>To:</b> <a title="hw-list@list.hw.cz" href="mailto:hw-list@list.hw.cz" target="_blank">HW-news</a> </div>
<div style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;"><b>Sent:</b> Thursday, July 31, 2008 2:13
PM</div>
<div style="font-family: arial; font-style: normal; font-variant: normal; font-weight: normal; font-size: 10pt; line-height: normal; font-size-adjust: none; font-stretch: normal;"><b>Subject:</b> Re: Sirka pasma digitalnich
osciloskopu</div>
<div><font face="Arial" size="2"></font><font face="Arial" size="2"></font><br></div>
</div><div><div></div><div class="Wj3C7c"><div dir="ltr">2008/7/31 <span dir="ltr"><<a href="mailto:nesvacil@posys.eu" target="_blank">nesvacil@posys.eu</a>></span><br>
<div class="gmail_quote">
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">Pokud
se ma neco digitalne zpracovat, tak na vstupu musi byt LPF. </blockquote>
<div><font face="Arial" size="2"></font><font face="Arial" size="2"></font><br>V
pripade pasmove omezeneho signalu muze byt pasmova propust a muze se
vzorkovat i mensim kmitoctem nez je aktualni kmitocet signalu (nosne) za
nasledujicich podminek:<br>Vzorkovaci kmitocet musi byt vetsi nez sirka
pasma<br>Obrazy spektra vznikle podvzorkovanim se nesmi
prekryvat.<br><br><br>Sice to neni pripad osciloskopu, ale ta prvni veta je
dost obecna na to, abych si rypnul :)<br><br>PK<br></div></div><br></div>
</div></div><p>
</p><hr><div class="Ih2E3d">
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