File $Source: /home/juda/www/hrc_flight/RCS/mcp_hv_off.html,v $
Version $Revision: 1.6 $
Last Update $Date: 1999/05/10 18:08:08 $
HRC CCB Status Approved

OP03 Procedures op03:

HRC Command Sequences

HRC MCP HV Off

Description:

This sequence is used to turn off both of the HRC MCP HV power supplies; both are turned off even though only one should be on. This sequence is used when switching between the HRC-I and HRC-S as the active detector. It turns off the HRC-S MCP HVPS, then the HRC-I MCP HVPS and then sets the HV level for the top and bottom plates to their minimum values.

Cautions/Restrictions:

None

Delta-Time Command Mnemonic Description Cmd Field Mnemonic Data Parameter Telemetry Verifier Expected Value Notes
00:00:01.000 2SPHVOF Spectroscopy MCP HVPS Off     2SPONST OFF sd0100
00:00:01.000 2IMHVOF Imaging MCP HVPS Off     2IMONST OFF sd0900
00:00:01.000 2SPTTHV Set spectroscopy top MCP HV step to 0 2SPTTHV2 0 2SPTPAST 0 sd0200
00:00:01.000 2SPTBHV Set spectroscopy bottom MCP HV step to 0 2SPTBHV2 0 2SPBPAST 0 sd0300
00:00:01.000 2IMTTHV Set imaging top MCP HV step to 0 2IMTTHV2 0 2IMTPAST 0 sd0a00
00:00:01.000 2IMTBHV Set imaging bottom MCP HV step to 0 2IMTBHV2 0 2IMBPAST 0 sd0b00

$Log: mcp_hv_off.html,v $

Revision 1.6 1999/05/10 18:08:08 jhc

corrected initial time delay to 1 sec

Revision 1.5 1998/05/18 15:51:38 juda

corrected telemetry verifier mnemonics for MCP HV Step commands (2IMTPST -> 2IMTPAST, 2IMBPST -> 2IMBPAST, 2SPTPST -> 2SPTPAST and 2SPBPST -> 2SPBPAST)

Revision 1.4 1998/05/13 20:01:11 juda

corrected delta time between "2SPHVOF" and "2IMHVOF" commands (was 0 sec should have been 1 sec)

Revision 1.3 1998/05/08 20:03:03 juda

Marked as "Approved"

Revision 1.2 1998/05/06 21:51:05 juda

Fixed page title and sequence name "HRC MCP HV Off"

Revision 1.1 1998/05/06 21:12:59 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