4 System
4.6 Alignments
The “Align 30 MHz to 3.6 GHz required” Error Condition appears when this
alignment has expired. You must now perform Align Now, 30 MHz to 3.6 GHz to
keep the receiver in warrantied operation.
Remote Command
:CALibration:RFPSelector:RADiated
:CALibration:RFPSelector:RADiated?
Example
:CAL:RFPS:RAD
Notes The query returns 0 if successful, or 1 if failed
When Align 30 MHz to 3.6 GHz is performed, alignment, bit 0 in the Status Operation register is set.
Completion, or termination, clears 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
:ABORt. Successful completion clears bit 2 in the Status Questionable Calibration Extended Needed
register and bit 1 in Status Questionable Calibration Extended Failure register
A failure encountered during alignment sets the Error Condition “30 MHz to 3.6 GHz Alignment
Failure” and sets both bit 2 in the Status Questionable Calibration Extended Needed register and bit 9
in Status Questionable Calibration register
Dependencies Does not appear in non-RF Preselector models, setting or querying the SCPI will generate an error
Couplings Initializes the time for the Last Align Radiated Now, Radiated Time
Records the temperature for the Last Align Radiated Now, Radiated Temperature
State Saved No
Status Bits/OPC
dependencies
May set Bit 8 or 9 in the Status Questionable Calibration register
May set Bit 2 in the Status Questionable Calibration Extended Needed register
May set Bit 1 in the Status Questionable Calibration Extended Failure register
Align Now, 20 Hz to 3.6 GHz
Immediately executes an alignment of the receiver subsystem. The receiver will stop
any measurement currently underway, perform an Align Now All, then perform the
RF Preselector alignment, and then restart the measurement from the beginning
(similar to pressing the Restart key).
The query (:CALibration:RFPSelector:FULL?) invokes the alignment of the RF
Preselector on both Conducted and Radiated Band and return a success or failure
value. Successful completion clears the “Align 20 Hz to 3.6 GHz required” Error
Condition, and clears bit 1 and bit 2 in the Status Questionable Calibration Extended
Needed register. The elapsed time counter begins for Last Align Now, Conducted
Time and Last Align Now Radiated Time and the temperature is captured for Last
Align Now, Conducted Temperature and Last Align Now, Radiated Temperature.
The alignment can be interrupted by pressing the Cancel (ESC) front-panel key or
remotely with Device Clear, followed by :ABORt. When this occurs, the Error
Condition “Align 20 Hz to 3.6 GHz required” is set, because new alignment data may
be employed for an individual subsystem, but not a cohesive set of data for all
subsystems.
Spectrum Analyzer Mode User's &Programmer's Reference 2172
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