mfd = micro and not milli farads?

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There apparently are lots of other people who are concerned not just about proper grammar but also about the basic principle that a word or a sentence should have a single unambiguous meaning.

Consider this: "Turn off engines not required", clearly can have (at least) two quite different meanings.

To avoid (costly) misunderstandings the aerospace industry already in the 80-ies defined Simplified Technical English (STE) for their documentation.
This has been turned into an official standard ASD-STE100 as Simplified Technical English for aerospace and defence.

I understand that this would be total horror for your average audio reviewer for whom the use of ambiguous and long-winding narratives is his daily bread and butter.😉
But in a tech forum where you want to clearly communicate ideas or critiques hopefully words and sentences should have only a single meaning. Saves us all lots of time and bandwidth.

jan
 
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It's all about communicating efficiently and effectively.
I have a reference on SI usage, "Spelling, Capitalization, and Symbols"
*Prefixes are never used alone, and no space or hyphen is used in attaching a prefix to a unit.
*Unit and prefix names are not capitalized unless they begin a sentence. (Exception: Celsius is always capitalized.)
*An abbreviation for a unit derived from a proper name is capitalized.
*When using characters from the Greek alphabet, it is preferable to use a typed symbol. If not available, the word, and words of a derived unit of which it is part, should be spelled out. A lowercase "u" must not be used as a symbol for the prefix micro.
Seeing this forum as an informal and international gathering, I put more weight on effective and efficient rather than any formal rules.
 
The proper way is to include a space between the number and the unit, though I admit I rarely write that way.
I don't believe there should be a space between V and rms. And whether Vrms or VRMS is more correct... I really don't know, but I would guess the former. A subscript is probably most correct.
 
I write 36mVac or 45mVrms or 50Vdc. V is capitalised since it's after Volta. All else are lower case.
Only multipliers above 1000 use capitals.
I always use multipliers/dividers in 1000s

I always omit spaces between values and units, even when referring to a post, eg. post112
 
I differentiate between ac and rms voltages.
If I am referring to a sinewave then I always use ac since it is a single frequency and the ratio of heating power to peak voltage is defined.

I only use rms where the signal is mixed frequency AND some of the signal is not sinewave.
Yes, I know that square waves and triangle waves are very extended bandwidth groups of sinewaves, but eventually that bandwidth must be limited.
I rarely measure test waves that requires a "true rms" reading since my test signals tend to be a small group of sinewaves within the measuring bandwidth of my instrument.

As a result I almost always write xyzVac
 
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