Basic waveform math terms

[redwire]

Re: Basic waveform math terms

Most scopes just (for example) add the waveforms, but some can do math like shift one waveform (in time) and then add. I believe it's different terminology between vector and scalar math. A vector has magnitude and direction (angle).
You can't really add or divide 10V<40° with 5V<184°

I dislike the math feature because many scopes will clip and bungle the addition without telling you, if there's a DC offset and you move the trace.

[SteveNielsen]

Re: Basic waveform math terms

Sum, difference, product, quotient is how I was taught. Ratio makes some sense but I've always thought of ratio as an equation involving three values that can be expressed as either a product or a quotient. For example Ohm's Law.

[ben7]

Re: Basic waveform math terms

On some oscilloscopes, instead of Addition, Subtraction, Multiplication, and Division (or its symbols thereof), the following terms are used instead: Sum, Difference, Product, Ratio.
Would most with basic mathematics knowledge understand the terms Sum, Difference, Product, and Ratio?

Makes sense to an 18 year old

Well, the answer to an addition statement is called the "sum", the answer of a subtraction statement is called the "difference", and same applies to multiplication ("product"). The division being called ratio makes sense, because it looks like this: "20/5". The ratio of 20 to 5 is the same as 4:1. So there are four 5's in 20. (20 divided by 5 gives you 4 .... four 5's in 20)

addend+addend=sum
minuend-subtrahend=difference
factor*factor=product
dividend/divisior=quotient

(Note there are different words that are used sometimes, like "augend+addend=sum", or "multiplicand*multiplier=product")

I'll come to the conclusion that most people would know it. I know I learned those in school. At least, those who are actually using the 'scope - who presumably are more into engineering - are more likely to know math better.

-Ben

[japlytic]

On some oscilloscopes, instead of Addition, Subtraction, Multiplication, and Division (or its symbols thereof), the following terms are used instead: Sum, Difference, Product, Ratio.
Would most with basic mathematics knowledge understand the terms Sum, Difference, Product, and Ratio?