Jononomous
New Member
So the equation for calculating frequency is E/T = F ... E is the number of events (in this case binary pulses), T is the time in seconds, and F is the frequency in hertz. So my question is... using the formula above we get T = E/F.
With that said:
8pulses/200000hz = 40microseconds(us)
8pulses/4000hz = 2milliseconds(ms)
So to get the same rate using 4Mhz, I would have to do the following:
200/4 = 50x faster
So that means we have to convert .00004s to 50x slower via:
.00004/50 = 0.0000008s
So to have the same pulse rate at 200Mhz from 4Mhz, I have to move 50x faster...
Is my thinking correct?
Basically I want to achieve the same pulse rate using two different frequencies... so what would the time factor be to go from 4Mhz to 200Mhz?
Also, what would the disadvantage be to using a 4Mhz crystal to accomplish this rather than say a 25Mhz crystal? Any Disadvantages?
Trying to pin down really how binary signals are transmitted through analog... don't quite understand the circuitry behind it... do I place the MCU inline with the output line and just generate pulses?
Thanks guys!
Edit: Any now that I look at my MCU specs... The max pulse width is 2us so how on earth would I generate a 8.0x10^-7s pulse?
With that said:
8pulses/200000hz = 40microseconds(us)
8pulses/4000hz = 2milliseconds(ms)
So to get the same rate using 4Mhz, I would have to do the following:
200/4 = 50x faster
So that means we have to convert .00004s to 50x slower via:
.00004/50 = 0.0000008s
So to have the same pulse rate at 200Mhz from 4Mhz, I have to move 50x faster...
Is my thinking correct?
Basically I want to achieve the same pulse rate using two different frequencies... so what would the time factor be to go from 4Mhz to 200Mhz?
Also, what would the disadvantage be to using a 4Mhz crystal to accomplish this rather than say a 25Mhz crystal? Any Disadvantages?
Trying to pin down really how binary signals are transmitted through analog... don't quite understand the circuitry behind it... do I place the MCU inline with the output line and just generate pulses?
Thanks guys!
Edit: Any now that I look at my MCU specs... The max pulse width is 2us so how on earth would I generate a 8.0x10^-7s pulse?
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