Agilent Technologies X Series Manual page 167

Mode
Example
Initial S/W Revision
Align Now
Accesses alignment processes that are immediate action operations. They perform complete operations
and run until they are complete.
Key Path
Initial S/W Revision
All
Immediately executes an alignment of all subsystems. The instrument stops any measurement currently
underway, performs the alignment, then restarts the measurement from the beginning (similar to pressing
the key).
Restart
If an interfering user signal is present at the RF Input, the alignment is performed on all subsystems
except the RF. After completion, the Error Condition message "Align skipped: 50 MHz interference" or
"Align skipped: 4.8 GHz interference" is generated. In addition the Error Condition message "Align
Now, RF required" is generated, and bits 11 and 12 are set in the Status Questionable Calibration
register.
The query form of the remote commands (:CALibration[:ALL]? or *CAL?) invokes the alignment of all
subsystems and returns a success or failure value. An interfering user signal is not grounds for failure; if
the alignment was able to succeed on all portions but unable to align the RF because of an interfering
signal, the resultant will be the success value.
Successful completion of
clear bit 14 in the Status Questionable Calibration register. It will also begin the elapsed time counter for
Last Align Now, All Time, and capture the Last Align Now, All Temperature.
If the Align RF subsystem succeeded in aligning (no interfering signal present), the elapsed time counter
begins for Last Align Now, RF Time, and the temperature is captured for the Last Align Now, RF
Temperature. In addition the Error Conditions "Align skipped: 50 MHz interference" and "Align
skipped: 4.8 GHz interference" are cleared, the Error Condition "Align Now, RF required" is cleared,
and bits 11 and 12 are cleared in the Status Questionable Calibration register
, can be interrupted by pressing the Cancel (ESC) front-panel key or remotely with Device
Align Now All
Clear followed by the :ABORt SCPI command. When this occurs the Error Condition message "Align
Now, All required" is generated, and bit 14 is set in the Status Questionable Condition register. This is
because new alignment data may be employed for an individual subsystem, but not a cohesive set of data
for all subsystems.
In many cases, you might find it more convenient to change alignments to
, . When the Auto Align process transitions to
Align Now All
to update only the alignments that have expired, thus efficiently restoring the alignment process.
In models with the RF Preselector, such as the N9038A, the Align Now All alignment will immediately
execute an alignment of all subsystems in the Spectrum Analyzer and partial subsystems of the RF
All
:CAL:AUTO:ALER NONE
Prior to A.02.00
System, Alignments
Prior to A.02.00
Align Now , All will clear the "Align Now, All required" Error Condition, and
Normal , instead of executing
, the analyzer will immediately start
Normal
System Functions
System
167