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6 System Functions
System
IF Alignment (Weekly use) (Remote Command Only)
Immediately executes an alignment of the IF subsystem which includes both the source and the analyzer in
the TRX module. The instrument stops any measurement currently underway, perform the alignment, and
then restart the measurement from the beginning (similar to pressing the Restart key). This alignment
corrects slow-rate which the drift does not impair specifications for time periods shorter than one week.
Thus, it is required to perform this alignment on a weekly basis to maintain specifications. This alignment
typically takes >4 minutes to complete.
A failure of IF will set the Error Condition “Align IF failed” and set bit 4 in the Status Questionable
Calibration register. A failure will not employ new IF alignment data.
Successful completion of IF will clear the Error Condition “Align IF failed” and clear bit 6 in the Status
Questionable Calibration register.
Align IF can be interrupted by pressing the Cancel (ESC) front-panel key or from remote with Device Clear
followed by the :ABORt SCPI command. When this occurs, no new IF alignment data will be employed.
The query form of the remote commands (:CALibration:IF?) will invoke the alignment of the IF subsystem
and return a success or failure value.
Note: In EXM, Source ARB play will be turned off and the source states will not be restored after IF
Alignment.
Mode
All
Remote Command
:CALibration:IF
:CALibration:IF?
Example
:CAL:IF
Notes
:CALibration:IF? returns 0 if successful
:CALibration:IF? returns 1 if failed
While Align Now, IF 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.
Preset
Not affected by Preset and Restore System Defaults Misc.
State Saved
No
Initial S/W Revision
E.14.00
Mode
All
Remote Command
:CALibration:IF:NPENding
Example
CAL:IF:NPEN
Notes
:CALibration:IF:NPENding is the same as :CALibration:IF
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
W-CDMA & HSPA Measurement Applications Reference
293
Summary of Contents for E6640A
Page 80: ...Table of Contents lxxx W CDMA HSPA Measurement Applications Reference ...
Page 188: ...3 Programming the Test Set Common Commands 188 W CDMA HSPA Measurement Applications Reference ...
Page 256: ...5 Mode Functions Mode Setup 256 W CDMA HSPA Measurement Applications Reference ...
Page 324: ...6 System Functions System 324 W CDMA HSPA Measurement Applications Reference ...
Page 369: ...8 Channel Power Measurement Auto Couple W CDMA HSPA Measurement Applications Reference 369 ...
Page 389: ...8 Channel Power Measurement Marker W CDMA HSPA Measurement Applications Reference 389 ...
Page 664: ...9 ACP Measurement Auto Couple 664 W CDMA HSPA Measurement Applications Reference ...
Page 669: ...9 ACP Measurement BW W CDMA HSPA Measurement Applications Reference 669 ...
Page 984: ...9 ACP Measurement View Display 984 W CDMA HSPA Measurement Applications Reference ...
Page 1001: ...10 Spectrum Emission Mask Measurement W CDMA HSPA Measurement Applications Reference 1001 ...
Page 1668: ...12 Code Domain Measurement Auto Couple 1668 W CDMA HSPA Measurement Applications Reference ...
Page 2354: ...14 QPSK EVM Measurement 2354 W CDMA HSPA Measurement Applications Reference ...
Page 2364: ...14 QPSK EVM Measurement Auto Couple 2364 W CDMA HSPA Measurement Applications Reference ...