Re: $129 spectrum analyzer Re: [Open-graphics] PCIe know-how?

2007-03-10 Thread James Richard Tyrer
James Richard Tyrer wrote: There is no filter response shape to worry about. This has always been a serious issue with an analog spectrum analyzer. In theory, it should be a Gaussian distribution. This is not realizable because it would have to extent to infinity. But even taking a

Re: $129 spectrum analyzer Re: [Open-graphics] PCIe know-how?

2007-03-06 Thread Carlo Salinari
Dieter wrote: You can get a 2.4 GHz spectrum analyzer for $129. http://www.dunehaven.com/lcsa.html That's expensive :-). This one is just $99: http://www.smallnetbuilder.com/content/view/24766/96/ (nice detailed article). ciao, Carlo

Re: $129 spectrum analyzer Re: [Open-graphics] PCIe know-how?

2007-03-06 Thread James Richard Tyrer
Carlo Salinari wrote: Dieter wrote: You can get a 2.4 GHz spectrum analyzer for $129. http://www.dunehaven.com/lcsa.html That's expensive :-). This one is just $99: http://www.smallnetbuilder.com/content/view/24766/96/ (nice detailed article). Nice piece of hardware. But, like the

Re: $129 spectrum analyzer Re: [Open-graphics] PCIe know-how?

2007-03-06 Thread James Richard Tyrer
Dieter wrote: So the question is whether you can make a good PC card digital oscilloscope for $100.00. You need an oscillator, frequency divider, PLL, sample hold, and DAC as well as the PCIe interface. I seriously doubt that this is possible for $100.00 but it does depend on the maximum

$129 spectrum analyzer Re: [Open-graphics] PCIe know-how?

2007-03-05 Thread Dieter
So the question is whether you can make a good PC card digital oscilloscope for $100.00. You need an oscillator, frequency divider, PLL, sample hold, and DAC as well as the PCIe interface. I seriously doubt that this is possible for $100.00 but it does depend on the maximum input

Re: $129 spectrum analyzer Re: [Open-graphics] PCIe know-how?

2007-03-05 Thread Timothy Normand Miller
On 3/5/07, Dieter [EMAIL PROTECTED] wrote: You can get a 2.4 GHz spectrum analyzer for $129. http://www.dunehaven.com/lcsa.html If a 2.4 GHz spectrum analyzer can be sold for $129, why not a lower frequency unit? My instinct is to wonder what it's missing. I've found some great deals

Re: $129 spectrum analyzer Re: [Open-graphics] PCIe know-how?

2007-03-05 Thread James Richard Tyrer
Dieter wrote: So the question is whether you can make a good PC card digital oscilloscope for $100.00. You need an oscillator, frequency divider, PLL, sample hold, and DAC as well as the PCIe interface. I seriously doubt that this is possible for $100.00 but it does depend on the maximum

Re: $129 spectrum analyzer Re: [Open-graphics] PCIe know-how?

2007-03-05 Thread Russell Shaw
Dieter wrote: So the question is whether you can make a good PC card digital oscilloscope for $100.00. You need an oscillator, frequency divider, PLL, sample hold, and DAC as well as the PCIe interface. I seriously doubt that this is possible for $100.00 but it does depend on the maximum

Re: $129 spectrum analyzer Re: [Open-graphics] PCIe know-how?

2007-03-05 Thread Dieter
So the question is whether you can make a good PC card digital oscilloscope for $100.00. You need an oscillator, frequency divider, PLL, sample hold, and DAC as well as the PCIe interface. I seriously doubt that this is possible for $100.00 but it does depend on the maximum input