Collaboration Case:  Retrieve and Check Error Vector

Description:  Retrieve and Check Error Vector as evaluated by the FAS or FSS sensor subsystems. This action is synchronized on the acquisition cycles of the sensor. The Error Vector is fetched and checked against limits and validity. On validation, the error vector is forwarded to the corresponding subsystem.

Performance:  some milli-seconds

Frequency:  Any time

Package Assignment:  Auto Guiding.

Preconditions: 

• ATCS is ONLINE TRACKING and GUIDING
• AG or FS active

Basic Course: 

• New error vector is available
• Validate error vector
  Exception Course: Invalid Error Vector
• Forward Error Vector to Guiding Loop

Exception Course: Invalid Error Vector

• Forward No Error Vector to Guiding Loop

Postconditions: 

• Error Vector is processed and available to the Guiding Loop

Issues to be Determined or Resolved: 

Notes: See AG/FS on UTs, see also ccdipCV and related.

Last modified: Thu Jun 28 13:05:25 UTC 2001