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Lock range is the input frequency range of the PLL over which out frequency changes in step with input frequency, where as capture range is the frequency range over which oput starts to responds to input frequency change.

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What is the difference between capture range and lock range in Phase lock loop devicee inj?

Lock Range of a PLL is the range of frequencies centered at free running frequency of VCO, around which the PLL can remain in locked state. Capture Range of a PLL is the range of frequencies centered at free running frequency of VCO, around which the PLL can acquire lock-in from an unlocked state. The relation is Capture Range<=Lock Range


Why is the capture range less than the phase locked range?

Once the PLL is in lock, what is the input (or VCO) frequency range for which it can keep itself locked is the lock range. When the PLL is initially not in lock, what frequency range can make the PLL lock is the capture range. Lock range is the parameter you should be interested in if you are looking for it's tracking behavior. But in CP PLLs, both the lock and capture ranges are the same.., limited only by the VCO's tuning range.In modern PLLs capture range and lock range are the same. But by definition these are different and this relaxed usage in journals and books leads to these confusions.Capture range and pull-in range are the same. Both refer to the ability of the system to acquire lock (from an unlocked state) to a frequency. Here the VCO is running at some arbitrary frequency and the disturbance required at the input to make it respond to the input disturbances thereafter is quantified as capture range.While the VCO is responding to the input disturbance (in-lock), the amount of disturbance at the input that will cause the VCO to shun the input and run freely is quantified as lock range.Always lock range is equal to or greater than the capture range.Definitions from the webLock range is defined as the band of frequencies centered on the VCO's natural frequency over which a PLL can maintain frequency lock with an external input signal.Capture range is defined as the band of frequencies centered around the VCO natural frequency where the PLL can initially establish or acquire frequency lock with an external input signal from an unlocked condition.


The ability of an FM receiver to lock onto the strongest signal is called?

capture effect


What is meant by lock range in pll?

freq range over which PLL can track input variation


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Can the king capture the queen in a game of chess?

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What is meant by lock range in phase locked loop circuits?

If we can state it in simple terms, let's do that. A phase locked loop (PLL) will lock on a signal and "hold" it if it can. The local oscillator, a voltage controlled oscillator (VCO), will be "tuned" to the signal and will "stay with it" to "optimize reception" of the signal. It will lock on that signal and change with it slightly as it changes. That's the value of a PLL: it can stay with a signal even if the frequency of the signal shifts slightly. But can the PLL "see" the signal? And what else might it see? A PLL is generally set up to look for a signal in a given range of frequencies. If you have a PLL tuner in your FM radio receiver (and who doesn't anymore?), when you tune up, say, 101.1 MHz on your dial, do you want the receiver looking for a signal on 101.1 MHz or right around there, or will you settle for a 101.3 MHz signal? See the problem? You want 101.1 MHz, and you don't want the darn machine to "slide" over to 101.3 MHz if there isn't a 101.1 MHz signal out there. Or, if it's a weak signal, you don't want to be dragged "off station" by your PLL. You just want your PLL to look where you tell it to look. Where do you tell it to look? In what is called a capture range. The capture range is the range of frequencies over which the PLL will grab and lock a signal.Apologies for taking so long to get to the point. Links? You got 'em. Look below.


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