Need tips on how to use Oscilloscope - diyAudio
Go Back   Home > Forums > Design & Build > Equipment & Tools

Equipment & Tools From test equipment to hand tools

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 29th May 2004, 12:52 AM   #1
diyAudio Member
 
vdi_nenna's Avatar
 
Join Date: Oct 2000
Location: PA, USA
Blog Entries: 1
Send a message via Yahoo to vdi_nenna
Question Need tips on how to use Oscilloscope

Can any one give me some tips on how to use 20Mhz dual-ch scope?

If you can give basic settings on how to trace a signal through a circuit for troubleshooting, that would be a great help!

Maybe we can start a Wiki for beginners??

Thanks!

Vince
  Reply With Quote
Old 29th May 2004, 03:13 AM   #2
diyAudio Member
 
Brian Donaldson's Avatar
 
Join Date: Jan 2003
Location: Texas, Love it or leave it
What brand did you get? How about a pic. What do you want to see?

I often like to use the xy and hook one channel to input and one to output. A perfect amp will give a perfectly straight sharp diagonal line. When pushed to clip, the line will bend to horizontal.(with X hooked to input). Any phase errors will make the patern circular.

When using in any other mode, you need to learn how to adjust and use the trigger settings. If you take measurements with channel 1 and have trigger sense set for channel 2, you won't be able to make anything stand still. Also read up and understand when to use AC or DC coupling. If you want to see PSU ripple, use AC with a high sensitivity etc.

Just play around with it. watch some of your favorite songs at different time bases. You'll be surprised how big transients in music (not tennie pop commercial Britany Spears compressed to hell stuff) are in relation to the average level.

The probe impeadance is high enough, poke it around and follow a signal through the stages of an amp while playing a tone or music. Just play around a little and get familiar.
  Reply With Quote
Old 29th May 2004, 04:16 AM   #3
diyAudio Member
 
zagisrule!'s Avatar
 
Join Date: Apr 2004
Location: Edgewood, NM
You just need to play with it!

Watch music, look at power ripple, etc. You will soon be able to troubleshoot things you could never do before.

When you can see the waveforms, you can tell what the circuit is doing/"thinking" rather than just seeing that it does not work anymore. You can see where signals start and stop, or are temporarily interupted by faulty or loose parts, etc.

Here is a picture of an audio waveform from my portable CD player...I was just playing around like you should Can you tell it is metal?





-Matt
Attached Images
File Type: jpg audio scope.jpg (78.0 KB, 103 views)
  Reply With Quote
Old 29th May 2004, 04:18 AM   #4
diyAudio Member
 
zagisrule!'s Avatar
 
Join Date: Apr 2004
Location: Edgewood, NM
There are applications other than audio too...

I am designing a 3-phase brushless, sensorless motor controller as well for my R/C airplanes. Without being able to see these waveforms, I could do NOTHING!









-Matt
Attached Images
File Type: jpg a and b channel motor waveforms.jpg (73.4 KB, 98 views)
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
LM 3886 Tips... -_nando-_ Chip Amps 39 10th January 2006 06:27 PM
Tips for Hakko 936-12 Dido Tubes / Valves 7 20th December 2005 01:55 PM
Anyone have tips for DIY caps? JoeBob Parts 6 30th January 2003 02:22 AM
Tips for Dayton 2 way? anticowboyism Multi-Way 3 18th October 2002 01:20 PM


New To Site? Need Help?

All times are GMT. The time now is 06:32 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2