Agilent Technologies X Series Manual page 448

Input/Output
Initial S/W Revision
Edit
Invokes the integrated editing facility for this correction set.
When entering the menu, the editor window turns on, the selected correction is turned
Corrections is set to On
trace is displayed. The actual, interpolated correction trace is shown in green for the selected correction.
Note that since the actual interpolated correction is shown, the correction trace may have some curvature
to it. This trace represents only the correction currently being edited, rather than the total, accumulated
amplitude correction for all amplitude corrections which are currently on, although the total,
accumulated correction for all corrections which are turned on is still applied to the data traces.
Because corrections data is always in dB, but the Y-axis of the analyzer is in absolute units, it is
necessary to establish a reference line for display of the Corrections data. The reference line is halfway
up the display and represents 0 dB of correction. It is labeled "0 dB CORREC". It is drawn in blue.
Corrections data is always in dB. Whatever dB value appears in the correction table represents the
correction to be applied to that trace at that frequency. So if a table entry shows 30 dB that means we
ADD 30 dB to each trace to correct it before displaying it. By definition all points are connected. If a gap
is desired for corrections data, enter 0 dB.
Note that a well-designed Corrections array should start at 0 dB and end at 0 dB. This is because
whatever the high end point is will be extended to the top frequency of the instrument, and whatever the
low end point is will be extended down to 0 Hz. So for a Corrections array to have no effect outside its
range, you should start and end the array at 0 dB.
The table editor will only operate properly if the analyzer is sweeping, because its
NOTE
updates are tied to the sweep system. Thus, you should not try to use the editor in
single sweep, and it will be sluggish during compute-intensive operations like
narrow-span FFT sweeps.
When exiting the edit menu (by using the
editor window turns off and the Ampcor trace is no longer displayed; however,
remains , any correction that was on while in the editor remains on, and the amplitude scale returns to
On
its previous setting.
Corrections arrays are not affected by a Preset, because they are in the Input/Output system. They also
survive shutdown and restarting of the analyzer application, which means they will survive a power
cycle.
Key Path
Initial S/W Revision
Navigate
Lets you move through the table to edit the desired point.
Key Path
448
A.02.00
, the amplitude scale is set to
Return
Input/Output, Corrections
A.02.00
Input/Output, Corrections, Edit
Log , and the Amplitude Correction ("Ampcor")
key or by pressing an instrument front-panel key), the
,
On Apply
Apply Corrections