Technical data

85108L System Manual
Operation
Pulsed-RF Measurements Overview
3-23
Figure 3-18 S11 Smith Chart
Switching Between Frequency Domain and Pulse Profile Domain
The domain in which the measurement calibration was performed is not part of the cal set limited
instrument state. This means that, for example, a cal set created in the frequency domain could be
turned on for a pulse profile domain measurement with no message to the operator. Except for the
pulse profile calibration procedure in the frequency domain using Frequency List, a cal set should
only be used in the domain in which it was created. To switch between the frequency domain and
the pulse profile domain, press:
CAL, [CORRECTION OFF], DOMAIN, <select domain>, CAL, [CORRECTION ON], [CAL SET n]
This sequence makes certain that the cal set applies to the domain in which it was created. Another
method is to save a number of instrument states, each with the appropriate domain and cal set,
then recall the desired instrument state.
If a cal set created in the pulse profile domain is turned On while in the frequency domain, it is
treated as if the calibration were performed using step sweep with the minimum frequency span.
The pulse profile domain error coefficients are applied to different frequency points, resulting in
trace errors.
Also, if a cal set created in the frequency domain is turned On while in the pulse profile domain, the
frequency is set to the start frequency of the frequency domain cal set and the frequency domain
error coefficients are applied to each corresponding point in the pulse profile domain. This also
results in trace errors.