What differences would one expect to see when changing mode between DCC+DCC and DCC on different types of probes? When should they be used respectively?
Ideally, the results should be the same. DCC measures the sphere according to where it believes it is located. This is fine if the probe assembly is as defined and not bent, etc. DCC+DCC samples there sphere to refine the location before it actually measures it for calibration. The latter takes a little longer of course.
