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Sweep time VS Accuracy

Question asked by bonanzaman on Dec 7, 2011
Latest reply on Dec 7, 2011 by Dr_joel
I'm curious about the effect of sweep time vs accuracy.
We are using a N5230C VNA testing low loss coax cables. Frequency range is .5-15.5 GHz. Number of points is 401.
The test cables each have 10.5dB of loss. The cable under test is likely to have 5dB of loss.
Currently we are using a sweep time of 10 seconds. What would be the effects if I shorten the sweep time to 5 or 3 seconds?
Would I be getting a degradation of accuracy and if so, would the s11 and s22 readings likely be higher or lower?