Keysight x-series User Reference Manual page 294

6 System Functions
System
With Auto Align set to Normal, the configuration of Alert is not relevant because the instrument's software
maintains the instrument in warranted operation.
Key Path
Mode
Remote Command
Example
Notes
Preset
State Saved
Status Bits/OPC
dependencies
Initial S/W Revision
Time & Temperature
With Auto Align Alert set to Time & Temperature the instrument will signal an alert when alignments expire
due to the combination of the passage of time and changes in temperature. The alert is the Error Condition
message "Align Now, All required". If this choice for Alert is selected, the absence of an alert means that
the analyzer alignment is sufficiently up-to-date to maintain warranted accuracy.
Key Path
Mode
Example
Readback Text
Status Bits/OPC
dependencies
Initial S/W Revision
24 hours
With Auto Align Alert set to 24 Hours the instrument will signal an alert after a time span of 24 hours since
the last successful full alignment (for example, Align Now, All or completion of a full Auto Align). You may
choose this selection in an environment where the temperature is stable on a daily basis at a small risk of
accuracy errors in excess of the warranted specifications. The alert is the Error Condition message "Align
Now, All required".
For front-panel operation , confirmation is required to transition into this setting of Alert. The confirmation
dialog is:
294
System, Alignments, Auto Align
All
:CALibration:AUTO:ALERt TTEMperature|DAY|WEEK|NONE
:CALibration:AUTO:ALERt?
:CAL:AUTO:ALER TTEM
The alert that alignment is needed is the setting of bit 14 in the Status Questionable Calibration
register.
This is unaffected by Preset but is set to TTEMperature on a "Restore System Defaults->Align".
No
The alert is the Error Condition message "Align Now, All required" and bit 14 is set in the Status
Questionable Calibration register.
Prior to A.02.00
System, Alignments, Auto Align, Alert
All
:CAL:AUTO:ALER TTEM
Time & Temp
Bit 14 is set in the Status Questionable Calibration register.
Prior to A.02.00
EMI Receiver Mode Reference