On Sun, Dec 19, 2021 at 09:41 AM, Richard Groot wrote:
So (newbie here) I've seen some versions of nanoVNA that capture 1000 data
points rather than 101. What are the consequences of the larger number of
points?
Disadvantage
- with more points you get a slower sweep time.
Advantages -
- with more points the step size for a given frequency range is smaller so you get more plotting "definition". When measuring an antenna, for example, this will give a better estimate of the frequency with minimum SWR.
- also you can "zoom in" (without recalibrating) and get better results if you have more data points. For example if you have 401 calibrated points over frequency range "A" and then zoom in by a factor of four to frequency range "B" 100 of the points will be close to what you get if you calibrate and measure over frequency range "B" with a 100 point sweep. Three interpolated points will be also available.
Roger
Roger Need