Use Case:  Set Tracking Additional Velocity

Description:  Send additional tracking velocity components

Role(s)/Actor(s): 
Primary: Operator,Maintenance
Secondary: Alt/Az axis, FAS, FSS

Priority: Major.

Performance: 1 second typ.

Frequency: Asynchronous, at any time.

Package Assignment:  Tracking.

Preconditions: 

• ATCS is ONLINE tracking

Basic Course: 

• Send command SETAV to set additional tracking velocity components (alpha/delta in arcsec/sec)
  Exception Course: Command failed
• ATCS sends additional tracking velocity components to tracking axes (Alt/Az,FAS,FSS)
  Exception Course: Command failed
• ATCS return OK reply

Exception Course: Command failed

• ATCS return ERROR reply

Postconditions: 

• Tracking axes use the additional velocity

Issues to be Determined or Resolved: 

Notes:

Last modified: Thu Jun 28 13:58:33 UTC 2001