MP3Car.com - View Single Post - Testing Opus 150 via ATX

long.1 · 07-11-2007, 01:39 PM

Quote: Originally Posted by psyrex

Well, if the input is 10.5v to the opus, then it shuts down. The load removed, voltage goes up to 11.33, and (since "ignition" is still on) the opus restarts.

You should probably measure the amps going into the opus just to be safe. I had a similar problem where a bench supply I was using was supposed to give 11A on 12V, but as soon as I had even 3A on it, the rail drops to about 10v. Just try a different power supply.

Thanks for that psyrex - much appreciated.

Your explanation of the opus rebooting makes perfect sense - thanks. I was struggling to get my head around that one. I thought that my "smart" opus was acting "dumb", but as it turns out (in this testing scenario) it's too smart for its own good.

As you can probably tell, I'm new to the numerous functions of the multimeter. I'm doing some research into measuring amps, and have found a useful flash tutorial here. Now to convince myself that I know what I'm doing where the PC/PSU is concerned.

Lastly, I'll also see if I can dig up another PSU somewhere. Might be lucky. Thanks again.

Cheers,

Long.1

07-11-2007, 01:39 PM	#3
long.1 Constant Bitrate Join Date: Jul 2006 Location: Melbourne, Australia Posts: 132	Quote: Originally Posted by psyrex Well, if the input is 10.5v to the opus, then it shuts down. The load removed, voltage goes up to 11.33, and (since "ignition" is still on) the opus restarts. You should probably measure the amps going into the opus just to be safe. I had a similar problem where a bench supply I was using was supposed to give 11A on 12V, but as soon as I had even 3A on it, the rail drops to about 10v. Just try a different power supply. Thanks for that psyrex - much appreciated. Your explanation of the opus rebooting makes perfect sense - thanks. I was struggling to get my head around that one. I thought that my "smart" opus was acting "dumb", but as it turns out (in this testing scenario) it's too smart for its own good. As you can probably tell, I'm new to the numerous functions of the multimeter. I'm doing some research into measuring amps, and have found a useful flash tutorial here. Now to convince myself that I know what I'm doing where the PC/PSU is concerned. Lastly, I'll also see if I can dig up another PSU somewhere. Might be lucky. Thanks again. Cheers, Long.1 __________________ Worklog: 2006 Ford Territory Ghia (Melbourne, Australia) Mounting Components in Custom Carputer Box Attention Aussie's - Say G'day Here Last edited by long.1; 07-17-2007 at 01:22 PM.