Agilent Technologies PSA Series User And Programming Manual page 252

Instrument Functions: P - Z
System
• , the instrument behaves like the
On
it is needed. In addition, every 15 minutes passing or 1.5 degrees temperature change will cause
just the RF system gain to be aligned, to achieve the best absolute amplitude accuracy. For
either alignment, the instrument will stop any measurement currently in process, perform the
full alignment, then restart the measurement from the beginning (similar to pressing
any alignment FAILs or is ABORTed by the user (eg ESCape key), the instrument will wait 5
minutes before retrying the necessary alignment. This helps to avoid infinite recursive loops of
alignment behavior in the event of broken hardware. Also see
There are 2 very quick alignments, invisible to the user, that are done every few minutes
or when certain settings are changed. These still occur, even if AutoAlign is set to Off.
These alignments are the Current SysGain and Current IF Flatness methods which can
also be forced to occur by user under the Align Subsys menu.
Key Path:
System
Survives
State Saved:
Factory Preset: Not affected by
Factory
Default: On (Restored by
Remote Command:
:CALibration:AUTO OFF|ON|ALERt
:CALibration:AUTO?
Example:
CAL:AUTO ON
4.9.4.2 Align All Now
Immediately executes an alignment cycle of all the subsystems (
and
Align Current Sys Gain
perform the full alignment, then restart the measurement from the beginning (similar to
pressing the key). All other operations are stopped and the alignments will be
Restart
visible on the display.
Key Path:
System
Remote Command:
:CALibration[:ALL] Performs a full alignment.
The following three commands perform a full alignment and return a number indicating
the success of the alignment. A zero is returned if the alignment is successful. A one is
returned if any part of the alignment fails.
:CALibration[:ALL]?
*CAL?
*TST?
252
, but will automatically perform a full alignment when
Alert
,
Alignments
and power cycle, but not saved in Instrument State.
Preset
.
Preset
,
System Restore Sys Defaults
). The instrument will stop any measurement currently underway,
,
Alignments
"Align All Now" on page
.)
,
Align RF Align IF
). If
Restart
252.
, ,
Align ADC
Chapter 4