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Tracing Filter/Oscillator Frequency Response Using Spectrum Analyzer and Signal Generator
Рет қаралды 20,058
Күн бұрынIn this video, I demonstrated using a spectrum analyzer and a signal generator to trace the frequency response and determine the resonant frequency of a filter or oscillator. This technique is useful when tracking generator is not available. The spectrum analyzer used here is an HP 8566B and the RF signal generator used is HP 8642B. www.kerrywong.com
@xxmrrickxx 11 ай бұрын
Very useful demonstration. Thanks for posting.
@DucatiMTS1200 4 жыл бұрын
Great to see some basic testing carried out. Very professional and well presented. This has been very helpful sir for my studies.
@PapasDino 8 жыл бұрын
Yep, a tracking generator makes life so much easier! Thanks for reminding us how to do it the "old fashioned" way! Happy Holidays Kerry!
@KerryWongBlog 8 жыл бұрын
+Dino Papas Thanks for commenting! Happy Holidays to you as well!
@ruhnet 5 жыл бұрын
Thanks for taking the time to make this video! Great stuff. It's nice to see some basic spectrum analyzer operations in action. Thanks again!
@KerryWongBlog 5 жыл бұрын
You are welcome Ruel!
@jonmullins8460 5 жыл бұрын
Thanks for this video. I have a Tektronix 2710 analyzer but it doesn't have a TG. Now I know how to work around that.
@davidgaleski5303 7 жыл бұрын
thank you for the help
@amikhimji 8 жыл бұрын
great video thanks
@taojiang719 8 жыл бұрын
Thank you sir
@josemiguez2375 3 жыл бұрын
When you check the quartz crystal in the second case, the resulting curve on the spectrum analyzer screen could be said to be the admittance curve, that is, the inverse of the impedance of that crystal. Please tell me if this conclusion is correct .thanks
@queuerious 4 жыл бұрын
Thanks Kerry for posting! Did you manually sweep the frequency generated by turning the signal generator frequency selector dial? I ask as it is never shown in the video how thr frequency is changed.
@KerryWongBlog 4 жыл бұрын
Yeah, for this one because I did not use a tracing generator the frequency was changed manually via the dial. If you search my video for tracking generator you will see that later I built a tracking generator for the 8566B.
@nikolazivkovic5341 8 жыл бұрын
What if you connect triggers of RF gen and SA together. Making RF Gen triggering SA and thus making t basicly a traging generator?
@vincei4252 7 жыл бұрын
Hi Kerry, have you given any thought into matching the input and output impedance's of the DUT so that you're not measuring other spurious effects caused by impedance mismatches between the generator and the SA input? I seem to recall that Alan, w2aew, uses a nominal value pad on the output side of the signal generator before the DUT for similar reasons.
@KerryWongBlog 7 жыл бұрын
I have not tried that, I will have to watch w2aew's video again :-)
@robert_redd1528 11 ай бұрын
when you said @4:44, you'll begin manual sweeping, i dont see your sweep time change at all? what exactly did you press becuase im trying to measure frequency reponse on an hp8591E model and i cant perform it how you do it
@KerryWongBlog 11 ай бұрын
The 8566B was in max hold mode, and the manual sweep is done from the frequency synthesizer (8642B).
@robert_redd1528 10 ай бұрын
what are your steps from the frequency synthesizer@@KerryWongBlog
@KerryWongBlog 10 ай бұрын
@@robert_redd1528 I think it was 1 MHz.
@robert_redd1528 10 ай бұрын
oh haha sorry i meant what did you press on your rf generator. im using an HP8647A rf signal generator. i dont know if im using it correcttly. im attempting to look at the frequnecy reponse with my HP8591E spectrum analyzer. people are saying i should use the tracking generator but mine is unequipped with one.@@KerryWongBlog