Thought I'd share this video with you of the teardown of a Keithley DMM7510 7.5 digit bench multimeter.
While high end audio is surrounded by a lot of mysticiscm, this high end bench DMM's design clearly shows why you're paying almost $ 4,000 for this multimeter.
If you haven't got the time to watch the whole episode, worth watching is how Keithley derive a very low noise power supply from a SMPS supplied voltage (from approx. 49:45).
While high end audio is surrounded by a lot of mysticiscm, this high end bench DMM's design clearly shows why you're paying almost $ 4,000 for this multimeter.
If you haven't got the time to watch the whole episode, worth watching is how Keithley derive a very low noise power supply from a SMPS supplied voltage (from approx. 49:45).
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I thought that by clicking the link that I would see something which is yours regarding ownership and work.
EEVBlog it can receive page clicks even with out your help.
As he did by embracing those UNI-T garbage multimeter for several years, until to admit on camera that those are garbage and did that four years later.
According my book this is not a source of reliable information for professionals, and Dave never managed to influence this specific group of people.
Neither teardown is source of getting any valuable information as a buyer.
If you wish my money ... show me the strong points of an equipment, and how this will help me making money by using it in real applications.
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EEVBlog it can receive page clicks even with out your help.
As he did by embracing those UNI-T garbage multimeter for several years, until to admit on camera that those are garbage and did that four years later.
According my book this is not a source of reliable information for professionals, and Dave never managed to influence this specific group of people.
Neither teardown is source of getting any valuable information as a buyer.
If you wish my money ... show me the strong points of an equipment, and how this will help me making money by using it in real applications.
.
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Indeed, but that's not why I linked to that video. EEVblog is well-known enough to survive on its own, and I don't benefit in any way by providing the link.
The reason I linked to it is to show how painstakingly that Keithley bench DMM must have been designed. At work I test and calibrate a measuring instrument which costs about 4 to 5 times what that DMM costs and yet its design doesn't look nearly as sophisticated (mind you it's capabale of some very tight specs too).
But unlike many (most?) people, he will admit when he's been proven wrong. In fact, the videos are riddled with errors which he leaves in with comments added later to point out his mistake. Most of the time he will ask viewers to correct him or comment on his views when he's not sure, rather than treat something as fact and correct it quietly later.
Of course not, but apart from being entertaining, the videos do have technical credit.
Yes, but this is a teardown, not a review. Many devices get multiple episodes with separate themes (e.g. look at this post on diyAudio). BTW, I don't regard the links provided by the poster a means to promote the EEVblog, but rather to show what the Rigol scopes are capable of at that very low price level.
It may also seem that Dave is promoting the Rigol scope, but there were some serious problems with trigger jitter which he also made videos of asking Rigol out loud why they missed it and what they're going to do to correct it. Rigol's solution is also tested and he does question the way they adressed the problem. This might actually lead to some people steering clear of Rigol scopes...
I like his blog and especially the way he presents it. And you're already warned beforehand by the maker's slogan not to take it too seriously...
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The most lame Oscilloscope testing that he did in favor of RIGOL was to test 2013 made products with AM modulation so to give a thump up for their Intensity performance, instead to crash them down so to prove their performance by measuring pulsing power supply pulses.
Any way, every one is responsible for his own actions and even mistakes.
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