Use Case:  Send FAS Setup

Description:  Send the FAS configuration setup to the Field Acquisition CCD

Role(s)/Actor(s): 
Secondary: FAS

Priority: Critical

Performance: 1 second

Frequency: At any time

Package Assignment:  Field Acquisition Subsystem.

Preconditions: 

• ATCS is ONLINE
• FAS setup is available

Basic Course: 

• Send command to send the setup to FAS
• ATCS sends the setup to FAS
  
  • Subflow:for next FAS activation
  • Subflow:for immediate update
  Exception Course: Command failed
  
• ATCS returns OK reply

Subflow:  for next FAS activation

• Update the next setup
  Postcondition:FAS setup is available for next FAS activation

Subflow:  for immediate update

• Update the active setup for the following supported parameters
  • Integration time
  • Reference point for centroid calculation
  Postcondition:parameters are updated immediately

Exception Course: Command failed

• ATCS returns ERROR reply

Postconditions: 

• FAS setup is available for next FAS activation
• Some setup parameters are updated immediately

Issues to be Determined or Resolved: 

Notes:

Last modified: Thu Jun 28 13:12:00 UTC 2001