Another great in-depth video. I'm in the market for a low-cost signal generator, and I appreciate your long-form approach, which allows you to impart to us non-paying viewers some of your hard-earned judgement and expertise. Please keep up your videos; I'm a subscriber and will keep watching them. If you've ever wondered why some viewers don't like your presentation style, it may be because: 1) they never learned how to read or write; 2) they have gnat-level attention spans; 3) they take Adderall, MDMA and other drugs; and/or 4) they are constantly fiddling with their "smart" phones, texting, "sexting", or playing video games, or all at the same time--their loss!
Thank you very much for the detailed review. I think that there are many more hidden possibilities of the generator. The microprogram in the generator can reveal all the possibilities of the generator, which are embedded in the main microcircuit of the generator. In practice, people use 2 - 3 functions. They do not know about other functions or they are not needed. For example, I bought such a generator for SWEEP mode. Then I found out that the VCO mode can also periodically change the oscillation frequency, which is needed to tune the oscillatory circuits and IF filters. I was pleased with your oscilloscope, it draws pictures well. On my oscilloscope (1102 series), two signals are not synchronizing. If on channel 1 the image is stable, then on channel 2 the sine wave runs across the screen. If it is motionless along the 2nd channel, then it runs along the 1st channel :). Thanks again for the detailed review.
Nice of you to show us an example of how to get the "MOD" to work correctly. I've bookmarked this and added it to my fav's so I can go over it and share it with my friends. Keep posting videos like this if you get the time, also maybe another video with the tittle keywords aimed at Modulation signals with the FY6900 might make it easier to find:) Have a nice day!
just learning electronics and every function makes me dive deeper into the uses. re the Trapezoid wave, what is it used for by professional engineers? thanks John
Hello Is possible generating 2 audio frequencys in the same chanel ? For example 100hz and 2400hz... For testing transmiter radios is great... 73 CT2GGX
It's a bit odd? that the slew rate adjust only affects the rising edge... but that ends up being a useful feature. I wonder if it's an accidental one. Thanks for the info. Cheers,
Hi Tom, Thank you very much for those two videos. In particular, this video made me appreciate my FY6900 a lot more. I haven't been very fond of it, but some special things are now evident. Indeed, it is a real pity about the lack of decent manuals. Are you going to prove the minimum requirements such as rise time, THD, and linearity? I've no way to test these, and knowing how accurate this (uncalibrated) instrument may be would help me with checking some other equipment. One question is very much still open: would you use an external 10mHz reference (GPS, Rubidium) to improve the frequency? I'm very much interested in any of your discussions on metrology. All the best, Mark
Thanks for the comments and questions. I think the next two videos may answer some of your questions about THD, etc. and I will post them as I finish the editing. As to external frequency standards, I definitely appreciate their usefulness in reducing the systematic error in measurement instruments, and would not do without the best standard I could afford in a professional metrology lab. However, in the teaching labs and hobby labs that are my primary focus these days I don't think they are as important, although they are still useful. For example, they synchronize the clocks in otherwise independent instruments. This can be both a blessing and a curse since a novice might think that two signals are correlated because of the common frequency source and assume that is always the case. It is a good idea to introduce new engineers to the pitfalls of uncorrelated sources and then to introduce them to the use of external standards to correlate their instruments. So I think it is best to have both worlds, a carefully calibrated lab and a slightly chaotic one since the contrast teaches multiple lessons.
@@tomtektest8042 excellent answer regarding the external reference. I am learning electronics now (independently), and the only reason I dove this deep into external references and syncing signals is because of the chaos you mention. The lack of automated sychronicity is what shot me down this rabbit hole. Rabbit hole meaning "path of learning all sorts of other things" haha. So usefull to learn things as you need to learn them to fix issues you have. It's like discovering things the natural way.
Another great in-depth video. I'm in the market for a low-cost signal generator, and I appreciate your long-form approach, which allows you to impart to us non-paying viewers some of your hard-earned judgement and expertise. Please keep up your videos; I'm a subscriber and will keep watching them.
If you've ever wondered why some viewers don't like your presentation style, it may be because: 1) they never learned how to read or write; 2) they have gnat-level attention spans; 3) they take Adderall, MDMA and other drugs; and/or 4) they are constantly fiddling with their "smart" phones, texting, "sexting", or playing video games, or all at the same time--their loss!
Thank you very much for the detailed review. I think that there are many more hidden possibilities of the generator. The microprogram in the generator can reveal all the possibilities of the generator, which are embedded in the main microcircuit of the generator. In practice, people use 2 - 3 functions. They do not know about other functions or they are not needed. For example, I bought such a generator for SWEEP mode. Then I found out that the VCO mode can also periodically change the oscillation frequency, which is needed to tune the oscillatory circuits and IF filters.
I was pleased with your oscilloscope, it draws pictures well. On my oscilloscope (1102 series), two signals are not synchronizing. If on channel 1 the image is stable, then on channel 2 the sine wave runs across the screen. If it is motionless along the 2nd channel, then it runs along the 1st channel :).
Thanks again for the detailed review.
I love finding "Easter Eggs" like this...thank you Tom :)
Nice of you to show us an example of how to get the "MOD" to work correctly. I've bookmarked this and added it to my fav's so I can go over it and share it with my friends. Keep posting videos like this if you get the time, also maybe another video with the tittle keywords aimed at Modulation signals with the FY6900 might make it easier to find:) Have a nice day!
Excellent. Thank you for letting us know.
I always thought that my cheapo FY6800 is a very good signal generator and you confirmed it.
thanks for your passion and precious brain
Very nice, thanks
just learning electronics and every function makes me dive deeper into the uses.
re the Trapezoid wave, what is it used for by professional engineers?
thanks
John
Hello
Is possible generating 2 audio frequencys in the same chanel ?
For example 100hz and 2400hz...
For testing transmiter radios is great...
73 CT2GGX
informazioni interessanti grazie
Hi , would the pulse generator be accurate enough to calibrate say a 25mhz analogue CRO?
great video.
Cheers
It's a bit odd? that the slew rate adjust only affects the rising edge... but that ends up being a useful feature. I wonder if it's an accidental one.
Thanks for the info.
Cheers,
You can actually control rise, fall and duty independently for the trapezoid wave by pressing on the "RISE" key several times.
Hi Tom,
Thank you very much for those two videos. In particular, this video made me appreciate my FY6900 a lot more. I haven't been very fond of it, but some special things are now evident.
Indeed, it is a real pity about the lack of decent manuals.
Are you going to prove the minimum requirements such as rise time, THD, and linearity? I've no way to test these, and knowing how accurate this (uncalibrated) instrument may be would help me with checking some other equipment.
One question is very much still open: would you use an external 10mHz reference (GPS, Rubidium) to improve the frequency?
I'm very much interested in any of your discussions on metrology.
All the best,
Mark
Thanks for the comments and questions. I think the next two videos may answer some of your questions about THD, etc. and I will post them as I finish the editing. As to external frequency standards, I definitely appreciate their usefulness in reducing the systematic error in measurement instruments, and would not do without the best standard I could afford in a professional metrology lab. However, in the teaching labs and hobby labs that are my primary focus these days I don't think they are as important, although they are still useful. For example, they synchronize the clocks in otherwise independent instruments. This can be both a blessing and a curse since a novice might think that two signals are correlated because of the common frequency source and assume that is always the case. It is a good idea to introduce new engineers to the pitfalls of uncorrelated sources and then to introduce them to the use of external standards to correlate their instruments. So I think it is best to have both worlds, a carefully calibrated lab and a slightly chaotic one since the contrast teaches multiple lessons.
@@tomtektest8042 Hi Tom,
Thank you kindly for your prompt and detailed response. I'm eagerly waiting for your next videos!
Cheers
Mark
@@tomtektest8042 excellent answer regarding the external reference. I am learning electronics now (independently), and the only reason I dove this deep into external references and syncing signals is because of the chaos you mention. The lack of automated sychronicity is what shot me down this rabbit hole. Rabbit hole meaning "path of learning all sorts of other things" haha. So usefull to learn things as you need to learn them to fix issues you have. It's like discovering things the natural way.
Can this generator be used as a freq counter?
Or Read The Fine Manual! 😂
via software
On Micsig scope.
with FY6900 at adj. pulse at 10k freq like the vid, im getting width reading on the Micsig STO-scope
10ns = 8.000ns
20ns = 20.00ns
30ns = 28.00ns
40ns = 40.00ns
50ns = 48.00ns
60ns = 60.00ns
70ns = 68.00ns
80ns = 80.00ns
90ns = 88.00ns
100ns = 100.00ns
110ns = 108.00
etc etc
1110ns = 1108ns
1120ns = 1120ns
on the unven numbers it keep being -2ns off.,. weird.