memphis 1000d - Page 2 - diyAudio
Go Back   Home > Forums > General Interest > Car Audio

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 28th August 2011, 01:52 AM   #11
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Does it remain on the display or does it go beyond the top of the display?
  Reply With Quote
Old 28th August 2011, 02:30 AM   #12
timwebb is offline timwebb  United States
diyAudio Member
 
Join Date: Jan 2010
Location: memphis tn
it goes to the top and stay at the top
  Reply With Quote
Old 28th August 2011, 02:54 AM   #13
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Is it still visible at the top of the display?
  Reply With Quote
Old 28th August 2011, 02:59 AM   #14
timwebb is offline timwebb  United States
diyAudio Member
 
Join Date: Jan 2010
Location: memphis tn
on its off the screen. if i adjust my probe then it only goes right at the top
  Reply With Quote
Old 28th August 2011, 03:17 AM   #15
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
There seems to be something very wrong with the scope or the way you're using it. This needs to be addressed before we can use any scope images.

Go to the oscilloscope page of the site, find the 'best initial settings' and set your scope as described there. After reading the text, read the questions under the text and make sure that you can answer all of them.

Set the scope to 0.5v/div and touch the probe to the B+ terminal of your power supply. The trace should disappear beyond the top of the display. Set it to 5v/div. The trace should deflect ~2.5 divisions. Confirm that that's what you see. If not, VERY specifically explain what you see.
  Reply With Quote
Old 28th August 2011, 05:08 AM   #16
timwebb is offline timwebb  United States
diyAudio Member
 
Join Date: Jan 2010
Location: memphis tn
ok its functioning the way it should now. at 0.5div the trace leaves the top of the screen.
at 5div it goes up 2.5div. my probe is the 1x-10x probe. wish i would learned this stuff when i was in school.
  Reply With Quote
Old 28th August 2011, 07:10 AM   #17
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Now that you have the scope working properly, with no input signal, check the signal on the gates for the audio FETs.

Set the timebase to 5us
Set the vertical amp to 5v/div
Set the coupling to AC (one of the few instances where you'll set it to AC coupling)

Do all of the gates have a square wave?
  Reply With Quote
Old 28th August 2011, 03:12 PM   #18
timwebb is offline timwebb  United States
diyAudio Member
 
Join Date: Jan 2010
Location: memphis tn
yes all the gates have a perfect square wave now.
  Reply With Quote
Old 28th August 2011, 10:15 PM   #19
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Is it still going into protect mode (or repeatedly alternating between green and red)?
  Reply With Quote
Old 28th August 2011, 10:32 PM   #20
timwebb is offline timwebb  United States
diyAudio Member
 
Join Date: Jan 2010
Location: memphis tn
both lights just stay on. the relay will engage.and produce rail voltage.
  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
1000D Memphis Amp ? Hoppy72450 Car Audio 9 23rd April 2011 05:07 PM
another memphis 1000d timwebb Car Audio 3 11th April 2011 04:14 AM
Memphis 1000D transformer. tgdrums1990 Car Audio 4 16th June 2010 04:32 PM
power supply issues memphise 1000d jf8620 Car Audio 1 10th May 2006 11:05 PM
Memphis 1000D Transistor Blowing jf8620 Car Audio 46 12th March 2006 11:49 PM


New To Site? Need Help?

All times are GMT. The time now is 08:11 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