Corrections - Agilent Technologies X Series Manual

Notes
Preset
Initial S/W Revision

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
be affected by changes made to the corrections table after the trace is put in
Key Path
Mode
Dependencies
Preset
Initial S/W Revision
Query Only
Returns the second parameter of the most recent
[:SENSe]:RECording:LENGth command. Possible values are
SEC|REC|POIN. If no second parameter was sent, then the return value is
SEC.
RECords
Prior to A.02.00
Input/Output, Corrections
SA, DVB-T/H, DTMB, SEQAN, TDSCDMA
This key will only appear if you have the proper option installed in your
instrument.
Amplitude correction may not be available in all modes; if a mode does not
support amplitude correction, the Corrections key should be blanked while in
that mode. If an application supports corrections but the current measurement
does not, then the key should be grayed out in that measurement
Corrections arrays are reset (deleted) by Restore Input/Output Defaults. They
survive shutdown and restarting of the analyzer application, which means they
will survive a power cycle.
A.02.00
Input/Output
View (Update Off) will not
View .
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