Use Case:  Get FSS Filter Wheel

Description:  Get the currently set Field Stabilization filter wheel.
STRAP uses it for its optimization process.

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

Priority: Major

Performance: TBD

Frequency: At any time

Package Assignment:  Field Stabilization Subsystem.

Preconditions: 

• FSS is ONLINE

Basic Course: 

• Send command GETNDF <n> to get the currently set FSS filter wheel position
  Exception Course: Command failed
  
• ATCS sends command to FSS sub-system

  Interface:  IfFssFilterWheel.Motor

  Exception Course: Command failed
• ATCS returns OK reply

Exception Course: Command failed

• ATCS returns ERROR reply
  Postcondition: FSS Filter wheel not moved

Postconditions: 

Issues to be Determined or Resolved: 

Notes:

Last modified: Tue Jul 10 13:23:50 UTC 2001