Rf Burst Amplitude Alignment - Keysight FieldFox B Series User Manual

SA (Spectrum Analyzer) Mode (Option 233–Mixed Analyzers)
SA Mode Settings
—
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.
If the Independent Source is enabled for your measurement, it will be borrowed
to perform the alignment. Again, the measurement results are not disturbed.
Learn about the Independent Source in
Generator " on page
The alignment process can be disabled. You may want to do this, for example,
if you are analyzing the amplitude stability of a signal.
How to make Burst Alignment settings
These settings do NOT survive a Preset or Mode Preset.
1. Press Cal 5 >
2. Then choose from the following:
Keysight N9938-90006 User's Guide
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
195.
184.
Individual Align
AMPTD?
"Independent Source/Tracking
Burst Alignment
>
is always
"Triggering" on
209