Agilent Technologies Signal Analyzer N9030a - Manual (Page 1272)

6 RLC Swept SA Measurement Front-Panel & SCPI Reference
System
: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”.
Couplings Initializes the time for the Last Align Now, All Time.
Records the temperature for the Last Align Now, All Temperature.
Status Bits/OPC
dependencies Bits 12 or 14 may be set in the Status Questionable Calibration register.
Initial S/W Revision Prior to A.02.00
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 Restart key).
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 Align Now, RF will begin the elapsed time counter for Last Align Now, RF
Time, and capture the Last Align Now, RF Temperature.
Align Now, RF can be interrupted by pressing the Cancel (ESC) front-panel key or remotely with
Device 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.
1272 Remote Language Compatibility Measurement Application Reference