Use Case:  Set FAS Integration Time

Description:  Set the Integration Time for the FAS TCCD

Role(s)/Actor(s): 
Secondary: Operator/Maintenance
Secondary: FAS

Package Assignment:  Field Acquisition Subsystem.

Preconditions: 

• FAS is ONLINE

Basic Course: 

• Send command to set the Integration Time (UIT) for FAS
• ATCS Prepares FAS Setup to update UIT in the setup configuration for FAS
  Exception Course: Command failed
• ATCS Sends FAS setup configuration to FAS
  Alternate Course: FAS is idle
  Exception Course: Set UIT failed
• ATCS returns OK reply

Alternate Course: FAS is idle

• ATCS returns OK reply
  Postcondition: the setting may take effect on next activation if not overloaded

Exception Course: Command failed

• ATCS returns ERROR reply
  Postcondition: FAS UIT unchanged

Exception Course: Set UIT failed

• ATCS returns ERROR reply
  Postcondition: FAS UIT unchanged

Postconditions: 

• FAS DIT = UIT

Issues to be Determined or Resolved: 

Notes:The command may take effect with one image delay (see TCCD User Manual)

Last modified: Thu Jun 28 13:12:01 UTC 2001