Instrument Basics : Spectrum Analyzer - Workbench Wednesdays

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Spectrum analyzers display signals in the frequency domain. To use one, you only need to know about four controls: reference level, center frequency, and resolution bandwidth. In this episode, see how to use a spectrum analyzer and determine the transmitting frequency of a device: bit.ly/35i75Tu
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Опубликовано:

8 окт 2019

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Комментарии : 34

@mrmilo92 Год назад

This really helped me fill some gaps left over from my engineering degree (earned partially remotely during covid). The school couldn't afford to send us this equipment so we worked on simulations within SPICE and similar programs when covering the topic. Having had this demo as an introduction to that experience would have really helped! Thanks for the upload!

@AnthonyFrancisJones 2 года назад

Fantastic explanation! Very many thanks for making this video.

@UnexpectedMaker 4 года назад

Fantastic intro video! And what a beautiful SA!

@bald_engineer 4 года назад

Thanks man. Always like to see your name pop-up. Love the livestreams you do!

@benjaminrich9396 Год назад

10m 20s in: "And notice that the centre frequency is five five six point two two five ". When it actually says 566.225 i.e. "five SIX six point two two five". Nice to know even James makes 'verbal typos'. :) Though possibly not a random error. I think given the ubiquity of the 555 timer IC, anybody interested in electronics - especially those who have taught it - will have said/heard/written/read "FIVE FIVE FIVE" so many times that after saying a "five" out loud the brain just expects to say five again. :) Great video btw.

@bald_engineer Год назад

lol.

@OsoPolarClone 4 года назад

I am enjoying your Wednesday videos

@dineshrajap6202 2 года назад

Thanks for your video

@gheorghemoraru634 Год назад

GREAT JOB!!!

@ananozytrgx 4 года назад

Молодец 👍 Awesome 😎

@MatureFister 9 месяцев назад

i undestand, that youtube favors 15 min videos, but please element14, some longer in depth videos where the awesome hosts do go into detail, such as the modulation topics would have been amazing...maybe even just as an addendum or a blogpost?

@ElectricalEngineeringAcademy 2 года назад

A friend has got GwInstek GSP730. It does not come with any accessories, except the power cord. I have learnt that to start with we should get an FM antenna to view local FM Radio channel spectrum. My question is, can I use any FM antenna or have to purchase their dedicated antenna.

@matthewedmiston1372 2 года назад

depends on the interface you may have to change a connector

@ElectricalEngineeringAcademy 2 года назад

@@matthewedmiston1372 Thanks dear sir.

@BaldurNorddahl 2 года назад

to receive FM you can just put a piece of wire into the port. Carefully not to damage it of course. Also picks up other strong signals like wifi and cell phone signals.

@ElectricalEngineeringAcademy 2 года назад

@@BaldurNorddahl Thanks dear. Best Regards

@christopherj3367 4 года назад

it looks alot like SDR (software defined radio). wondering if sdr will work similar?, I'm currently trying to make a NFC aerial for a phone.

@NiHaoMike64 4 года назад

Yes, a RTL-SDR is a really cheap spectrum analyzer for 25MHz-1.7GHz or so. If audio band is more your interest, check out baudline.

@bald_engineer 4 года назад

There is some similarity, however, they do have some functional differences. I wrote up a longer explanation here: www.element14.com/community/docs/DOC-93509/l/workbench-wednesday-instrument-basics-spectrum-analyzer?ICID=workbench-wed-episodes#comment-237581

@edgeeffect 4 года назад

Yeah... I had very similar thoughts.

@CABohol 4 года назад

Nice

@frankreiserm.s.8039 3 года назад

Cool. Except for the sweep generator, this thing works just like an AM radio. Frank Reiser M.S.

@VJTI2 3 года назад

So it’s amplitude vs frequency. What makes the amplitude? I get how shouting is higher amplitude than whispering. But what are the energy differences here? Is it *amount* of data transmitted on that frequency? Examples? An analyzer run in silence still picks up peaks, like a GPS signal. What gives that amplitude if it’s not audible volume?

@drwombat 3 года назад

Just hazarding a guess here electromagnetic signals outside the human detectable audio range?

@matthewedmiston1372 2 года назад

voltage

@amirb715 2 года назад

that was not an explanation for that weird unsymmetrical shape when the RBW was 3MHz @8:18. That is a bug not a feature. I imagine a FW update should fix it. Even if the signal was not modulated it would still show the same weird shape.

@BrianThomas 2 года назад

Wow .. I love 💕 Love.. Love this sort of stuff. Where can I learn more about this sort of stuff? Does anyone have any suggestions? I really want to get into making projects and such.

@drwombat 3 года назад

Can you show the basic difference between sinusoidal and square (digital?) Waves? Or is it just implied that any sinusoidal wave appears in natural science and text book math versus digital waves (composed of overlapping sinusoidal waves) occur in the digital domain?