Agilent Technologies Signal Analyzer N9030a - Manual (Page 624)

6 RLC Swept SA Measurement Front-Panel & SCPI Reference
Input/Output
Restore Input/Output Defaults
This selection causes the group of settings and data associated with the Input/Output key to be a
reset to their default values. In addition, when a Source is installed, licensed and selected,
Restore Input/Output defaults will initiate a Source Preset.
This level of Restore System Defaults does not affect any other system settings or mode settings
and does not cause a mode switch. All the features described in this section are reset using this
key, including Input Corrections and Data (described in the Corrections section).
Key Path Input/Output
Example :SYST:DEF INP presets all the Input/Output variables to their factory default values.
Notes Refer to the Utility Functions for information about Restore System Defaults and the complete
description of the :SYSTem:DEFault INPut: command.
Initial S/W Revision Prior to A.02.00
Corrections
This key accesses the Amplitude Corrections menu.
Amplitude Corrections arrays can be entered, sent over SCPI, or loaded from a file. They allow
you to correct the response of the analyzer for various use cases. The X-series supports four
separate Corrections arrays, each of which can contain up to 2000 points. They can be turned on
and off individually and any or all can be on at the same time.
Trace data is in absolute units and corrections data is in relative units, but we want to be able to
display trace data at the same time as corrections data. Therefore we establish a reference line to
be used while building or editing a Corrections table. 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.
In zero span, where the frequency is always the center frequency of the analyzer, we apply the
(interpolated) correction for the center frequency to all points in the trace. In the event where
there are two correction amplitudes at the center frequency, we apply the first one in the table.
Note that the corrections are applied as the data is taken; therefore, a trace in View (Update Off)
will not be affected by changes made to the corrections table after the trace is put in View.
624 Remote Language Compatibility Measurement Application Reference