Enhanced Response Optimization; Interpolation - Agilent Technologies FieldFox N9913A User Manual

Enhanced Response Cal - Forward OR Reverse (May require an option)
Faster measurements than Full 2-Port.
DUT: Non-Insertable or Insertable
S-parameters Corrected: S21 and S11 (Forward) OR S12 and S22 (Reverse)
Standards: OPEN, SHORT, LOAD on ONE port. Defined THRU between ports.
Sweeps in ONE direction.
NOTE Also select an Enhanced Response Optimization. Learn more on page 71.
TRL – Mechanical Cal ONLY.
Potentially better accuracy than Full 2-port. Corrects all S-parameters.
DUT: Non-Insertable or Insertable
Standards: Thru, Reflect, Line or variations of these. A TRL Cal Kit MUST be
selected to see this Cal Type.
Sweeps in BOTH directions.
Learn more about TRL Calibration in the Supplemental Online Help:
http://na.tm.agilent.com/fieldfox/help/FieldFox.htm.

Enhanced Response Optimization

When Enhanced Response Cal Type is selected, either for one calibration or for
CalReady, this setting optimizes the calibration based on the type of DUT being
measured. See also: CalReady Properties on page 72.
This setting does NOT survive Preset.
 Press Cal 5 then
 Then
 Then choose from:

Interpolation *

Highest measurement accuracy is achieved when the frequency range or
resolution settings remain the same during the measurement as when the
FieldFox was calibrated. If these settings change after performing a calibration,
the FieldFox will interpolate the calibration so that VERY accurate
measurements continue to be made.
Interpolated Calibrations are only slightly less accurate than a calibration
performed at the measurement settings. Learn more about the relative accuracy
of FieldFox calibrations on page 74.
Calibration for NA, CAT, and VVM Modes
More
Enh.Response
Non-Reciprocal
(default) An amplifier is a Non-Reciprocal device because it
o
has gain in the forward direction, and very high loss (isolation) in the
reverse direction. This choice provides the best correction for non-reciprocal
devices, and reasonable correction for reciprocal devices.
Reciprocal
A reciprocal DUT is a device in which the insertion loss through
o
the device is similar in both the forward (S21) and reverse (S12) directions.
A cable is a reciprocal device. This choice provides the best correction for
reciprocal devices. However, S11 measurements on non-reciprocal devices
will appear to have more return loss than the non-reciprocal choice.
71