Agilent Technologies X Series Manual page 170

System Functions
System
Notes
Couplings
Status Bits/OPC dependencies
Initial S/W Revision
RF
Immediately executes an alignment of the RF subsystem. The instrument stops any measurement
currently underway, performs the alignment, then restarts the measurement from the beginning (similar
to pressing the key).
Restart
This operation might be desirable if the alignments had been set to not include RF alignments, or if
previous RF alignments could not complete because of interference which has since been removed.
If an interfering user signal is present at the RF Input, the alignment will terminate and generate the Error
Condition message "Align skipped: 50 MHz interference" or "Align skipped: 4.8 GHz interference", and
Error Condition "Align Now, RF required". In addition, bits 11 and 12 will be set in the Status
Questionable Calibration register.
The query form of the remote commands (:CALibration:RF?) will invoke the alignment of the RF
subsystem and return a success or failure value. An interfering user signal is grounds for failure.
Successful completion of
Time, and capture the Last Align Now, RF Temperature.
, can be interrupted by pressing the Cancel (ESC) front-panel key or remotely with Device
Align Now RF
Clear followed by the :ABORt SCPI command. When this occurs, the Error Condition message "Align
Now, RF required" is generated, and bit 12 is set in the Status Questionable Condition register. None of
the new alignment data is used.
In models with the RF Preselector, such as the N9038A, the RF alignment will execute an alignment of
the RF subsystem of the Spectrum Analyzer, as well as the RF subsystem on RF Preselector path.
Key Path
Mode
Remote Command
170
:CALibration:NRF? returns 0 if successful
:CALibration:NRF? returns 1 if failed
While Align Now, All but RF is performing the alignment, bit 0 in the Status
Operation register is set. Completion, or termination, will clear bit 0 in the
Status Operation register.
This command is sequential; it must complete before further SCPI commands
are processed. Interrupting the alignment from remote is accomplished by
invoking Device Clear followed by the:ABORt command.
Successful completion will clear bit 14 in the Status Questionable Calibration
register and set bit 12 if invoked with "Align Now, All required".
Initializes the time for the Last Align Now, All Time.
Records the temperature for the Last Align Now, All Temperature.
Bits 12 or 14 may be set in the Status Questionable Calibration register.
Prior to A.02.00
, will begin the elapsed time counter for Last Align Now, RF
Align Now RF
System, Alignments, Align Now
All
:CALibration:RF
:CALibration:RF?