File $Source: /home/juda/www/hrc_flight/RCS/failsafe_disable.html,v $
Version $Revision: 1.2 $
Last Update $Date: 1999/07/07 14:14:47 $
HRC CCB Status Approved

OP03 Procedures op03:

HRC Command Sequences

Disable HRC Mechanism Failsafes

Description:

This sequence disables all of the HRC mechanism failsafes. High-level pulse commands to disable the master, cal source, +Y shutter, and -Y shutter relays are issued with 1 second delays.

Cautions/Restrictions:

None

Flow Diagram

Delta-Time Command Mnemonic Description Cmd Field Mnemonic Data Parameter Telemetry Verifier Expected Value Notes
00:00:01.000 2FSMRDI Disable Failsafe Master Relay     2FSMRST DISA hlp24
00:00:01.000 2FSCSDI Disable Failsafe Cal Source Relay     2FSCAST DISA hlp28
00:00:01.000 2FSPYDI Disable Failsafe +Y Shutter     2FSPYST DISA hlp66
00:00:01.000 2FSNYDI Disable Failsafe -Y Shutter     2FSNYST DISA hlp6a

$Log: failsafe_disable.html,v $

Revision 1.2 1999/07/07 14:14:47 juda

marked as Approved

Revision 1.1 1999/06/28 14:13:36 juda

Initial revision

Dr. Michael Juda
Harvard-Smithsonian Center for Astrophysics
60 Garden Street, Mail Stop 70
Cambridge, MA 02138, USA
Ph.: (617) 495-7062
Fax: (617) 495-7356
E-mail: mjuda@cfa.harvard.edu