Spectrum analyzers display the amplitude of an input signal versus frequency. Typically the frequency extends along the X-axis and the amplitude extends up the Y-axis of the display. They are used to measure the spectrum of an unknown signal within the frequency range of the particular analyzer ...
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80 views
Disabling the camera auto white balance
I've decided to use standard web-camera as a simple spectrograph, being inspired by this website (and this one too).
The device actually works, as you may see on the image:
But you may see on the ...
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1answer
62 views
Building a cheap and stable microwave network analyser or oscillator (2-5GHz)
I am interested in measuring the changing dielectric constant of a liquid as it undergoes a process. My background research of scientific articles shows that the 2-5GHz range provides the best ...
2
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2answers
81 views
Does it make sense to plot the angle in an signal spectrum analyzer?
I've built a toy oscilloscope with an Arduino, acquiring the samples with the ADC and plotting the spectrum on my computer. The spectrum is the output of the FFT algorithm. You can see a video here of ...
2
votes
2answers
137 views
FCC verification and analyzer choice
I am in the design stage of a control surface that controls a remote audio DSP through ethernet. My plan is to target FCC 15 class A. The processor is a pic32 running at 80mhz.
First question, what ...
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2answers
75 views
Spectrum Analyzer: Resolution Bandwidth vs Acquisition Time
Why a smaller resolution bandwidth (RBW) in a swept tuned spectrum analyzer RBW requires longer acquisition time?
4
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2answers
569 views
Oscilloscope with FFT or a Spectrum Analyzer?
Could someone explain to me please which aplications demand one and the other and why? As far as I read it's all about the 'db', is it true? And why?
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1answer
57 views
Input impedance of a GenRad 2512 Spectrum Analyzer [closed]
Does anyone know the input impedance on the General Radio Model 2512 Spectrum Analyzer?
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2answers
113 views
Generic Active Probes
I need an active probe for use with a spectrum analyzer and oscilloscope. My scope has contacts around the BNC connector for powering a compatible probe. The spectrum analyzer is a different story. ...
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2answers
216 views
how to use a spectrum analyzer?
This is a new topic to me so it would be great if someone could give me a few pointers. I have an amplifier that I would like to get the frequency response for and a spectrum analyser with Probes A, ...
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1answer
110 views
Do comercial spectrum analyzers show a single-sided spectrum?
If I use a Bessell function to compute sidelobe power - do I need to double this power to get the power I will read on the specan?
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3answers
697 views
Designing a Audio Spectrum Analyzer
I want to design a simple LED audio spectrum analyzer kinda like this.
Which method would be less expensive to do:
Use many filters for each frequency band, depending on how much bands and LEDS I ...
4
votes
2answers
157 views
What's a good spectrum analyzer to learn with?
I'm trying to learn more about building RF circuits and I want to buy a spectrum analyzer. I've looked around on ebay, and a lot of them are really expensive. I'm a student, so I don't have a lot of ...
3
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2answers
301 views
What's the cheapest way to do basic EMI testing?
I need to test that my project will not interfere with radios in the 27 - 72 MHz band.
I can't afford a spectrum analyser. Nor can I afford to buy all tx/rx pairs in between 27 and 72 MHz (27, 35, ...
