Keysight E6640A, Measurement Applications User & Programmer Reference

Page: 291 / 2870

6 System Functions
System
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
Mode All
Remote Command :CALibration:RF:NPENding
Example CAL:RF:NPEN
Notes :CALibration:RF:NPENding is the same as :CALibration:RF
including all conditions, status register bits, except that this scpi command does not BLOCK the scpi
session, so the user should use status register bits to query if the calibration is successfully
completed or not.
Typical usage is:
1):CALibration:RF:NPENding (Start a RF calibration)
2):STATus:OPERation:CONDition? (If bit 0 is set, then the system is doing calibration, the user
should do re-query until this bit is cleared )
3):STATus:QUEStionable:CALibration:CONDition? ( to check if there are any errors/failures in
previous calibration procedure)
Initial S/W Revision X.14.20
W-CDMA & HSPA Measurement Applications Reference 291