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4 System

4.6 Alignments

:CALibration:INTernal:SOURce:NPENding (start an internal source calibration)

:STATus:OPERation:CONDition? (Check if the calibration is completed or not, If Bit 0 is

set, then the system is doing calibration. Repeat this query until the bit is cleared)

:STATus:QUEStionable:CALibration:EXTended:FAILure:CONDition? (Check

if Bit 14 is set or not. If this bit is set, that means there are some errors in previous internal source

calibration)

Dependencies Only appears in VXT models M9410A/11A

4.6.2.10 Align Receiver

Accesses receiver alignment processes that are immediate action operations. They

perform complete operations and run until they are complete.

NOTE

This alignment corrects slow-rate drift, which 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 >2

minutes to complete.

There is no alert available for the receiver alignment. Operators are responsible for

checking temperature shift since the last Align Now, Align Receiver, to determine

whether the receiver alignment needs to be executed.

Remote Command

:CALibration:INTernal:RECeiver[:ALL]

:CALibration:INTernal:RECeiver[:ALL]?

Example

:CAL:INT:REC

Notes The query initiates an Alignment and returns 0 if successful, or 1 if failed

Dependencies Only appears in VXT models M9410A/11A

Couplings Initializes the time for the Last Align Receiver Now, All Time

Records the temperature for the Last Align Receiver Now, All Temperature

4.6.2.11 Align Fast

Accesses fast alignment processes, which are immediate action operations and

perform complete operations, running until they are complete.

This aligns the subsystem that is most sensitive to temperature and time and

includes:

–

compensating the DC offset, gain imbalance and quadrature phase imbalance of

IQ Modulator and/or Demodulator

–

compensating the gain offset of RF path

Spectrum Analyzer Mode User's &Programmer's Reference 2120

Keysight x-series User Manual

Other manuals for Keysight x-series