post your cute scopes and function generators here folks
bought this scope around five years ago back when i was still in high school, which is just about the time that i started messing around with electronics. it's got two input channels each with a max frequency resolution of 12 MHz, as well as a function generator that can output any wave under the sun (as long as that wave is 500 kHz or under)
(pictured: interface program displaying sin(x)/x wave output by the function generator back into ch1)
it's powered exclusively by a usb connection, and the actual interface is a windows program that interacts with the oscilloscope via usb. as a first scope it did me well and when i was working with clocks maxed out at 25 MHz it was more than enough, but now that i'm dealing with higher frequency signals it's essentially impossible to debug my circuits using this thing without dividing the signals, which is time consuming and sometimes doesn't provide me with any good information. definitely will still keep using the function generator tho, very useful for testing analog stuff
finally ended up buying a new scope, and upon initial testing i must say that i am beyond impressed with it so far. it's rated for up to 200 MHz and has a sampling rate of up to 1 GSamples/sec, it's got more functions than you can shake a stick at, and it's also got options for debugging common serial signals which i'll be using in the near future in some of my fpga projects. if you'd believe it, this thing only cost about 370 usd whereas i bought my previous scope for around 150 usd
pictured above and below is the scope analyzing a wave generated by a 25 MHz crystal oscillator as well as a split-screen fft showing its harmonics
(all you gotta do is put in a flash drive and press the print button to get this!)
got a good feeling this thing'll have me covered far into the future, i can't see any reason why my projects would get more complex than 200 MHz clock signals until i start doing some real arcane shit that'll probably get me sent to guantanamo
bought this scope around five years ago back when i was still in high school, which is just about the time that i started messing around with electronics. it's got two input channels each with a max frequency resolution of 12 MHz, as well as a function generator that can output any wave under the sun (as long as that wave is 500 kHz or under)
(pictured: interface program displaying sin(x)/x wave output by the function generator back into ch1)
it's powered exclusively by a usb connection, and the actual interface is a windows program that interacts with the oscilloscope via usb. as a first scope it did me well and when i was working with clocks maxed out at 25 MHz it was more than enough, but now that i'm dealing with higher frequency signals it's essentially impossible to debug my circuits using this thing without dividing the signals, which is time consuming and sometimes doesn't provide me with any good information. definitely will still keep using the function generator tho, very useful for testing analog stuff
finally ended up buying a new scope, and upon initial testing i must say that i am beyond impressed with it so far. it's rated for up to 200 MHz and has a sampling rate of up to 1 GSamples/sec, it's got more functions than you can shake a stick at, and it's also got options for debugging common serial signals which i'll be using in the near future in some of my fpga projects. if you'd believe it, this thing only cost about 370 usd whereas i bought my previous scope for around 150 usd
pictured above and below is the scope analyzing a wave generated by a 25 MHz crystal oscillator as well as a split-screen fft showing its harmonics
(all you gotta do is put in a flash drive and press the print button to get this!)
got a good feeling this thing'll have me covered far into the future, i can't see any reason why my projects would get more complex than 200 MHz clock signals until i start doing some real arcane shit that'll probably get me sent to guantanamo
Trusty Rigol scope next to my variable DC PSU. Got these used and have been some of the best purchase choices in my life. If only i'd known about the firmware trick that allows you to get full 100mhz out of the 50mhz Rigol scope, but oh well. I don't think i'll ever get any higher than 100mhz cause all of the dumbass rf transmitters ive fucked with all fall under ~30mhz anyway. The digital logic stuff I fuck with hasn't been any higher than 100mhz so far as well.
Disable ipv6 and become one with the ipv4 singularity
i've heard a lot of good things about the rigols, do you have any pictures of it running? i'd love to see that
im too lazy to find a flash drive, but heres it on the calibration prong
Disable ipv6 and become one with the ipv4 singularity
observed something strange when i was messing around with a telegraphing key earlier
the wire i'm grabbing is hooked to ch2 of the scope and seems to be outputting a roughly 60 Hz source, and the probe is grounded. the amplitude increases when i tighten the grip and lessens when i loosen the grip, additionally when i grabbed the shielded portion of the wire you could see the wave with a muted amplitude. there is no other source hooked to the scope
why is this happening?
the wire i'm grabbing is hooked to ch2 of the scope and seems to be outputting a roughly 60 Hz source, and the probe is grounded. the amplitude increases when i tighten the grip and lessens when i loosen the grip, additionally when i grabbed the shielded portion of the wire you could see the wave with a muted amplitude. there is no other source hooked to the scope
why is this happening?
oh lmao ive grabbed probe tips before on accident and theres always some sinusoidal waveform that appears. Its weird. I imagine it has something to do with the same effect that happens when you grab a radio antenna and the reception gets clearer. Might just be picking up the AC power near your walls through you, but I dunno
Disable ipv6 and become one with the ipv4 singularity
yeah induction via a wall supply seemed the most likely since it was clocking in at 60 Hz
i've definitely noticed that antenna thing before, especially up in northern wisconsin since i listen to the radio a lot up there. strange thing about that particular phenomenon though is that the signal getting clearer isn't directly tied to being near any other alternating current sources, since i'd often grab the radio antenna while laying in bed to adjust the signal and have that effect happen but at night i've got the mains generator off so there's nothing around that could be inducing other waveforms through my body
i wonder if there's a way to measure these body waves without needing a 120v60 source around to conduct the measurement, there's gotta be something else going on here
i've definitely noticed that antenna thing before, especially up in northern wisconsin since i listen to the radio a lot up there. strange thing about that particular phenomenon though is that the signal getting clearer isn't directly tied to being near any other alternating current sources, since i'd often grab the radio antenna while laying in bed to adjust the signal and have that effect happen but at night i've got the mains generator off so there's nothing around that could be inducing other waveforms through my body
i wonder if there's a way to measure these body waves without needing a 120v60 source around to conduct the measurement, there's gotta be something else going on here
My main scope! It's a bit old... but it works great! The only thing I'm missing is waveform storage, maybe it would be cool to add that to it myself...
The instructions are the last resort.