Thanks for the follow up information Volker.
Did you see the Spike manual section on Noise Figure? We have the equations we use for the measurement. We will be writing a white paper for this soon.
I agree that measuring the noise source once is the best first step for automation.
NF of the BB60C will vary slightly per device, but is roughly the DANL of the instrument + 174. You can find the DANL specs in the product manual.
