Rf Burst Amplitude Alignment - Keysight A Series User Manual

SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)
SA Mode Settings
1. Press Cal 5 >
2. Then choose from the following:
—
Amptd?
amplitude alignment is questionable. This is always true when OFF, and is
conditionally true in Auto or Hold when the most recent alignment is deemed
stale.

RF Burst Amplitude Alignment

RF Burst alignment calibrates the circuitry to provide accurate external RF
Burst triggering. Learn more about RF Burst triggering in
page
When enabled (by default) the FieldFox performs an alignment process using
the internal RF source. Although some sweeps are delayed, measurement
results are never disturbed.
220
Individual Align
— Auto (Default setting) Alignments are required and are performed
automatically, when necessary, at times when interrupting the RF
Output is deemed acceptable. The alignment process is performed
opportunistically when changes in settings require the
measurement to stop momentarily and a significant time elapsed
since the last alignment (predetermined in the factory) or the
internal instrument temperature has changed sensibly
(predetermined in the factory).
Some examples of the conditions when alignments occur are: This
could be a Center frequency change, or it could be as simple as
requesting a Single sweep. Also, unique alignments are required at
different FieldFox receiver frequency bands, so even if the
temperature hasn't changed, an alignment may be required when
one changes the Center frequency.
If a needed alignment cannot be performed, the user is notified
about questionable amplitude AMPTD?.
— OFF Alignments are not performed. The most recent alignment
result is cleared. Only factory corrections are applied to SA Receiver
measurements. Questionable amplitude
displayed.
— Hold The alignment process is stopped, but the last alignment
values are applied to subsequent sweeps.
Amptd Align Now An alignment is performed immediately, thus updating
(clearing) any questionable amplitude status. If the Mode was previously
Off, it is changed to Hold.
is annotated in the lower left corner of the FieldFox screen when
206.
> Amptd Alignment
AMPTD?
Keysight N9927-90020 User's Guide
is always
"Triggering" on