Agilent Technologies Signal Analyzer N9030a - Manual (Page 1385)

6 RLC Swept SA Measurement Front-Panel & SCPI Reference
Trace/Detector
Open/Short Guided Cal
On pressing the Open/Short Cal softkey in the Normalize menu, the Open Calibration Form is
displayed. The form shows a diagrammatic representation of how to connect the external source
to the spectrum analyzer to perform the calibration. When the Continue button is pressed, the
Open calibration sweep is taken and stored in internal memory, for use later in this cal process. If
the Cancel button is pressed, the Open/Short Cal is cancelled and the Normalize menu is returned.
On completion of the Open Calibration, the Short Calibration Form is displayed. This form shows
a diagrammatic representation of how to connect the external source to the spectrum analyzer to
perform the Short calibration. When the Continue button is pressed, the Short calibration sweep
is taken and stored in internal memory, for use later in this cal process. If the Cancel button is
pressed, the Open/Short Cal is cancelled and the Normalize menu is returned.
On completion of the Short Calibration, the Open and Short calibration measurements are
averaged (power). The picture with prompt is taken off the screen and a menu with “Done Cal”
and “Cancel” is displayed. When you press “Done Cal” the resulting trace is stored to Trace 3. If
the Cancel button is pressed, the Open/Short Cal is cancelled and the Normalize menu is returned.
The Open Short calibration is applied by taking the average of the Open and the Short trace. The
average is a linear average point-by-point. You can further configure averaging on the traces
(Open, Short, and final measurement). In this case, the value of the averaged Open and Short
trace are linear averaged (by performing a point-by-point average of the two traces). Both the
Open and the Short terminations should have approximately unity reflection. Taking the average
gives the best estimate of a perfect reflector for a scalar return loss measurement. You should
store the result in reference trace 3, for later application with the Normalize function.
Norm Ref Posn
Offsets the displayed trace without affecting the instrument gain or attenuation settings. This
allows the displayed trace to be moved without decreasing measurement accuracy. The normalized
reference position is indicated with a right arrow on the left side of the display and a left arrow
on the right side of the display, just inside the graticule. See picture below:
Remote Language Compatibility Measurement Application Reference 1385