Filter
Top Products
247
System Functions
System
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.
External Mixer
Immediately executes an alignment of the External Mixer that is plugged into the USB port. The
instrument stops any measurement currently underway, performs the alignment, then restarts the
measurement from the beginning (similar to pressing the Restart key). As this alignment calibrates the
LO power to the mixer, this is considered an LO alignment; and failure is classified as an LO alignment
failure.
The query form of the remote commands (:CALibration:EMIXer?) will invoke the alignment of the
Key Path: System, Alignments, Align Now
Mode: All
Remote Command: :CALibration:RF
:CALibration:RF?
Example: :CAL:RF
Notes: :CALibration:RF? returns 0 if successful
:CALibration:RF? returns 1 if failed (including interfering user signal)
While Align Now, 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 clears the Error Conditions “Align skipped: 50 MHz
interference” and “Align skipped: 4800 MHz interference” and the Error
Conditions “Align RF failed” and “Align Now, RF required”, and clears bits
3, 11, and 12 in the Status Questionable Calibration register.
A failure encountered during alignment will generate the Error Condition
message “Align RF failed” and set bit 3 in the Status Questionable Calibration
register.
An interfering user signal will result in bits 11 and 12 to be set in the Status
Questionable Calibration register to indicate Align Now, RF is required.
An interfering user supplied signal will result in the instrument requiring an
Align Now, RF with the interfering signal removed.
Couplings: Initializes the time for the Last Align Now, RF Time.
Records the temperature for the Last Align Now, RF Temperature.
Status Bits/OPC dependencies: Bits 11, 12, or 14 may be set in the Status Questionable Calibration register.
Initial S/W Revision: Prior to A.02.00