|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
178.203.205.142
In Reply to: RE: Speaking of Linear Power Supplies.... posted by AbeCollins on December 16, 2014 at 20:05:41
The scope looks really nice in your living room. It's glow matches the PS Audio gear perfectly. ;)What did you pay for the scope? I saw offers between 200-400$.
No wonder you didn't get the probes. To get real good ones can get quite costly.Don't expect too much from the basic measurements you're gonna take. You'll find out about very evident flaws. And that's about it.
Those folks building serious audio gear are neither idiots, nor they're lacking high quality measurememt equipment (magnitudes better then yours or mine). They are just not able to nail the "actual" issues.
Most of them "hear" the issues too - they obviously wouldn't admit in public... ...unless they'd have a commercial solution for us.
The easy way out: "It's all common mode noise" (by Steve N.)The real challenge is to get the full picture over the entire usually very complex audio system. There are hundreds of parameters which are different from system to system from device to device. Yep. It'll take more then a 350Mhz scope to figure "it" all out.
Good luck with your new toy.
Edits: 12/17/14Follow Ups:
"You'll find out about very evident flaws. And that's about it."
I couldn't disagree more. Looking in the time domain is far more likely to reveal tricky problems than anything else remotely affordable. Yea, you need a fast stimulus but that's easy and cheap. Not to say that one SHOULDN'T measure amplitude and phase, it gives your data some Bode, as it were. But a scope is far and away the single most valuable general instrument there is for things electronic and with a cheap Fn generator and a little work will also give you both the real and imaginary parts of the transfer function.
NOW I'm not saying that using your soundcard and some software is going to do the trick. That's fine for in-band sweeps and FFT's but won't generally get you to causation. A fast scope (and the right skills) usually will.
Regards, Rick
Yes, I'm quite familiar with scopes and their limitations, not to mention the need for a good set of probes. I don't plan to 'figure it all out' but apparently fmak almost did just before his older Tek 465 350MHz scope went up in smoke. ;-)I paid just over $400 but it's not a beater, everything 100% functional, and I know where it came from including last service and NIST traceable calibration date.
Edits: 12/17/14
+1 for your post
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: