Use Case:  Get FSS Aperture Field Diaphragm

Description:  Get the Field Stabilization Aperture Field Diaphragm aperture diameter.

Role(s)/Actor(s): 
Primary: Operator, Maintenance
Secondary: FSS

Priority: Major

Performance: TBD

Frequency: At any time

Package Assignment:  Field Stabilization Subsystem.

Preconditions: 

• FSS is ONLINE

Basic Course: 

• Send command GETAFD to get the FSS Aperture Field Diaphragm
  Exception Course: Command failed
• ATCS sends command to FSS sub-system

  Interface: STRAP

  Exception Course: Command failed
• ATCS returns OK reply

Exception Course: Command failed

• ATCS returns ERROR reply
  Postcondition: FSS Aperture Field Diaphragm not moved

Postconditions: 

Issues to be Determined or Resolved:  FSS Aperture Field Diaphragm diameter range

Notes:

Last modified: Thu Dec 20 15:34:53 UTC 2001