1. The average power of the signal over a time interval is computed by:
ā¢ summing the sample powers in the interval
ā¢ dividing the sum by the number of samples
This process calculates Pulse Power, Average Power, and the average power between markers.
Since each sample represents the power ina finite time interval, the endpoints are handled separately to avoid spreading the interval by one-half pixel at each end of the interval as shown in Figure: Sampling Intervals. The interval in Figure: Sampling Intervals the average power is given by:
Pavg= 1/2 (P0+Pn)+1/((n-1)) (nā1)ā(n-1)Pn
Sampling Intervals
2. The processor calculates the delay between the two measurement channels. The time reference for each channel is established by the first signal crossing (starting from the left edge of the screen) which passes through the mesial level. The signal excursion must be at least 6 dB.
