PTAI

The Angle of the Analyzer/Kidney Aparatus

System Name: PTAI

Type: Virtual

Brief Description

This controls which analyzer is moved to the sample two theta position when A4 is moved. It can only be moved when in manual PTAI mode (command ManualPTAI).

Restrictions

Devices which cannot be moved simultaneously with this device:

Other Restrictions:

This cannot be moved if PTAI is in automatic mode

Interactions

Devices which affect this device:

Devices which are affected by this device:

Whenever PTAI is moved:

    A4's value is recalculated as the angle of the analyzer corresponding to the 
    new value of PTAI.
    
    If in UB Matrix mode HKL is recalculated, other wise HKL is assigned the value N/A.
    
    The values of DIFF and SPEC are updated so that they correspond to the number of 
    counts last observed on the channel specified by PTAI.  As an example, if PTAI
    were changed to 5, DIFF would take on the value of the number counts observed
    by DIFF05 during the last count.