Contents
What is reference phase?
A data object enters the reference phase when it has no potential to participate in other transactions that either create new data objects or cause updates to it but for which there continues to exist a reasonable expectation that the data will be used in queries.
What is the condition of periodic signal?
A periodic signal is one that repeats the sequence of values exactly after a fixed length of time, known as the period. In mathematical terms a signal x(t) is periodic if there is a number T such that for all t Equation 10.10 holds.
How is the phase of a signal related to its time?
In time and frequency metrology, the phase difference is usually stated in units of time, rather than in units of phase angle. The time interval for 1° of phase is inversely proportional to the frequency. If the frequency of a signal is given by f, then the time t deg (in seconds) corresponding to 1° of phase is tdeg = 1 / (360f) = T / 360.
The time interval for 1° of phase is inversely proportional to the frequency. If the frequency of a signal is given by f, then the time t deg (in seconds) corresponding to 1° of phase is tdeg = 1 / (360f) = T / 360. Therefore, a 1° phase shift on a 5 MHz signal corresponds to a time shift of 555 picoseconds.
Is the time interval for 1° of phase proportional to the frequency?
The time interval for 1° of phase is inversely proportional to the frequency. If the frequency of a signal is given by f, then the time t deg (in seconds) corresponding to 1° of phase is tdeg = 1 / (360f) = T / 360.
How to calculate the time shift of a 5 MHz signal?
If the frequency of a signal is given by f, then the time t deg (in seconds) corresponding to 1° of phase is tdeg = 1 / (360f) = T / 360. Therefore, a 1° phase shift on a 5 MHz signal corresponds to a time shift of 555 picoseconds.