File $Source: /home/juda/www/hrc_flight/macros/RCS/scan_negy.html,v $

Version $Revision: 1.2 $

Last Update $Date: 1999/04/21 20:10:13 $

HRC CCB Status Approved

OP03 Procedures op03:

HRC Higher-Level Sequences

-Y Shutter Scan

Description:

This sequence is used to scan the -Y shutter across the aim-point on one of the HRC detectors. After verifying that the door is not in the way of the shutter travel, the -Y shutter is moved to an initial starting position, POS_START. Then, for a specified number of steps (NUM_STEPS), the shutter is moved STEP_SIZE motor steps toward the maximum limit switch. At each shutter position there is a pause of DWELL_TIME to collect data.

Cautions/Restrictions:

The HRC Door must be out of the way of the shutter travel, either the door must be closed or it must be fully open (see HRC-C-008). This is accomplished in the first sequence in the procedure.

Procedure

Move -Y Shutter to Requested Position (shutter_negy.html) [Parameters: POS_HIBYTE = POS_START(HI_BYTE), POS_LOBYTE = POS_START(LO_BYTE)]
Repeat the following 2 steps NUM_STEPS times
- Wait for data collection [DWELL_TIME]
- Step -Y Shutter Toward Maximum Travel (step_minusy_toward_max.html) [Parameters: POS_HIBYTE = STEP_SIZE(HI_BYTE), POS_LOBYTE = STEP_SIZE(LO_BYTE)]
Wait for data collection [DWELL_TIME]
Home -Y Shutter (home_negy.html)

$Log: scan_negy.html,v $

Revision 1.2 1999/04/21 20:10:13 juda

Added comment to constraint about door position being handled by the initial sequence. Removed the initial verification step.

Marked as Approved

Revision 1.1 1999/03/03 21:37:33 juda

Initial revision

Revision 1.1 1998/10/14 14:31:15 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

File	$Source: /home/juda/www/hrc_flight/macros/RCS/scan_negy.html,v $
Version	$Revision: 1.2 $
Last Update	$Date: 1999/04/21 20:10:13 $
HRC CCB Status	Approved