calculate period, and frequency from vertical sensitivity and sweep rate

[Brabdon73]

This is what our teacher gave us in the attached file if some one could help with proper calculations i have a TI-36X solar calculator and am just learning how to use it any help would be great

Thanks for your time

 

[edman222]

Why do you need a calculator for this? If you look at the display the answer is there... They say .5V/Div for vertical. Ok, so each box going up means .5V. It looks like two boxes are filled = 1V peak to peak. The frequency? Well "Frequency is the number of occurrences of a repeating event per unit time" So if each box horizontally is 2ms and it has 5 bars within the 2ms then you have 2ms/5 = 400us per bar, so by the definition of frequency, we can see that each wave is repeated every 4 ms = T period , and the frequency = 1/T = 250 Hz...

Hope this makes sense and i didn't do something silly

 

[Brabdon73]

just new to this trying to figure out the easyist way to do it sorry not a supper brain was steel fab. for 5 yrs and home automation for 10 but first time with the oscilloscopes and transformers got 4.0 first sem. had surgery and missed first 2 weeks of this sem.

I was told to take .5v x 2 x .707=1.414 this is mag.
2ms x 2= 4ms
then i get .25

 

[edman222]

no prob, hope it's right.... I don't think you need a calculator but I could be wrong.
You should see what others get for an answer too.. Good luck in your class.

 

[Brabdon73]

what is 400 us?? ultra sec.

 

[edman222]

no.. u is micro seconds, 10^-6
https://www.statman.info/conversions/number_scales.html

 

[Brabdon73]

you used the u but no tail sorry learned that 1st sem

 

[edman222]

lol no prob.. i did not think to format my 'u' next time i will write u (micro).. Thanks for letting me know

 

[crutschow]

lol no prob.. i did not think to format my 'u' next time i will write u (micro).. Thanks for letting me know

u is commonly used for "micro" when the proper symbol is not available. But if you click the "Go Advanced" tab at the bottom of your post it will come up with a list of symbols with the Greek µ (lower case Mu) symbol, among others.

 

[KeepItSimpleStupid]

1. NEVER write .25, ALWAYS write 0.25
2. 0.25 what? peaches
3. ALWAYS show units f=1/T = 1/2mS = 1/0.002s; This is not .25. Hint, it has units of Hertz or Hz.