Better solution: add a 10MOhm resistor in parallel of it. I soldered mine on top of the in-plug. Plus this scope is missing the two diodes in the orginal 5012H layout. Adding the resistor and diodes will make the readings and signal more accurate.
@viocaia2 жыл бұрын
Thanks to let us know! Good idea!
@andreasl43202 жыл бұрын
@@viocaia you are welcome. My DSO120M was way more out of specs than yours. Some of the resistors in the resistor-capacitor network was either fake or at least could not be measured. So replaced them first with correct values. After adding the diodes and the 10M resistor I finally could also calibrate my probe correctly. There are still some glinches in displaying the signal in the 2V range, but only at lower frequencies like a few kHz. But at 1Mhz and up to about 8 MHz I´m getting now an absolute square wafeform. Then it turns slowly to sinus, though thats the limitiations of this scope. And it displays frequencies up to 115MHz more or less correctly. So at this stage not bad for a scope I paid 50 Euros. Using it more often than my desk bench for quick measurments.
@viocaia2 жыл бұрын
@@andreasl4320 I don't have mine anymore..but your advice is very welcome..I'm sure it will be useful for our friends ...thanks again!
@botronics2 жыл бұрын
Enjoyed your videos. Maybe you can put the resistor in the probe instead of the meter to avoid modification of the meter.
@viocaia2 жыл бұрын
Good idea..I'll try that
@viocaia3 жыл бұрын
Credits goes to Ovidius ! Thank you for sharing!
@viocaia3 жыл бұрын
!😀
@ovidiuovidius3 жыл бұрын
Îmi cer scuze domnule Viorel că nu am făcut o filmare profesionala... Mulțumesc mult pentru tot!
@viocaia3 жыл бұрын
E bine! E un canal de hobby! Cine are de inteles va intelege! Mersi si eu! It`s a hobby channel, so if there is something to learn, the˙˙knowers`` will take it!
@viocaia3 жыл бұрын
😀
@tinkerman95252 жыл бұрын
A good plan except for the reference meter. If you do something like this you use a fluke DMM. That is the only brand that I and profesionals trust.
@viocaia2 жыл бұрын
Right!
@xalalalala3 жыл бұрын
Hi Viorel, thanks for the video. Regarding that resistor in series... Can you share what resistor did you use and how did you install it? Thank you in advance 👍
@viocaia3 жыл бұрын
It turns like a bad solution, so I don't recommend it.It's ok for DC but turns the AC impracticable.
@xalalalala3 жыл бұрын
@@viocaia right that's exactly what o was thinking. But there must be a more efficient solution to this 🤔
@viocaia3 жыл бұрын
@@xalalalala maybe a future firmware, it's looking like some clever guys are working to an open source
@xalalalala3 жыл бұрын
@@viocaia that would be great yes. Do you have any links to that discussion so we can follow the development please?
And in addition, a better camera, lighting and hands.
@viocaia3 жыл бұрын
I'll do the best! Thanks!
@viocaia3 жыл бұрын
Those shacking videos are from a friend, unfamiliar with filming and stuffs like this, but a very capable engineer.
@friedmule54033 жыл бұрын
I think you seem to be very interesting and worth watching. You have chosen to put music under your review and all power to you for that, unfortunately, does that, in my opinion, destroy your video, and therefore have I only watched 1½ of your videos and chose to go to another channel for maybe less detailed info but without music:-) Please understand that I am not hating on you and I do not know if you can use my opinion at all, I can see you have something great, and good luck to you!! :-)
@viocaia3 жыл бұрын
Thanks! I'll be careful about that.I use a little background music to cover all the vocal artifacts like breathing or swallow..they are annoying , there is a reason for that, maybe it was to loud.
@friedmule54033 жыл бұрын
@@viocaia Thank you for your great reply! :-) Maybe I can be of some minor help, I have worked as, among other, sound technicians on a radio station. If you find you are making mouth-noise do you maybe have to increase the distance between you and the microphone. To compensate for that, can it be necessary to increase the recording level. :-)
@viocaia3 жыл бұрын
@@friedmule5403 I will, you know that sweet spot, to keep the lows in the voice but avoid plosives and esses, I don.t like to use noise gate or compression, the narative is fade anyway, but I.ll do a better wind shild to my mics..thanks for advice.😀
@friedmule54033 жыл бұрын
@@viocaia You are very welcome!! I have just subscribed by the way -) Do you know if your software is compressing the sound, I am just thinking if you could get rid of the low level or maybe insert a 100Hz filter?
@viocaia3 жыл бұрын
@@friedmule5403 Super thanks for subscribing! I'll do the best to keep it interesting.BTW I want to keep the lows in the mix, you know that radio voice like ...Now I've bought a really nice device , that will give a boost to everything! look here kzfaq.info/get/bejne/lch4q8-L2Jqdeo0.html
@7thSenpai3 жыл бұрын
Mine seems to measure pretty close in relations to my volt meter in peak voltages mode. Rather then the default peak to peak mode. If anyone can elaborate how volt meters should read it? VPP VP RMS?
@viocaia3 жыл бұрын
depends of the needs..for me , measuring the audio power amplifiers RMS is what I need, but working with SMPS you need Vpp, or at the end simply V in DC..of course for the money ..is doing the job..
@tinkerman95252 жыл бұрын
Does it have fft
@viocaia2 жыл бұрын
Not at all..just a simple , basic , educational oscilloscope
@joshaustin56132 жыл бұрын
I just came across your channel, good stuff. I know absolutely nothing about oscilloscopes, but I picked up this exact same model to use for setting amplifier gains in car audio. I could never get my probe to compensate correctly. I'm including a link to a short video, I was hoping maybe you had a little insight you could share. I'm only ever measuring 40 or 1000hz, and it seems to do fine, but I kind of feel like I bought this so I could be precise, if I can fix this, I'd like to. Thanks in advance! kzfaq.info/get/bejne/pMVdiZx_0pzOoYU.html
@viocaia2 жыл бұрын
I believe it's faulty..try another probe, or simply add a 10Mohm resistor in series and try calibrate on 10X..
@joshaustin56132 жыл бұрын
@@viocaia awesome, I'm going to hit up radio shack on Monday. If they don't keep probes in stock I'll grab a resistor. Thank you sir! I'll keep you updated how it goes!