Mullard Space Science Laboratory

MULLARD SPACE SCIENCE LABORATORY UNIVERSITY COLLEGE LONDON Author: K Al Janabi

SOLAR-B EIS MODES

Document Number: MSSL/SLB-EIS/SP0013.01 14 June 2000

Distribution:

NRL G Doschek C Korendyke S Myers C Brown K Dere J Mariska

NAOJ H Hara T Watanabe

RAL J Lang B Kent BU C Castelli S Mahmoud

Mullard Space Science Laboratory J L Culhane A Smith A James L Harra . A McCalden C McFee R Chaudery P Thomas R Card W Oliver P Coker R Gowen K Al Janabi M Whillock SLB-EIS Project Office A Dibbens Orig

Author: Date:

Authorised By Date:

Distributed: Date: EIS MODES MSSL/SLB-EIS/SP013.01

CHANGE RECORD

ISSUE DATE PAGES COMMENTS CHANGED 01 14 June 2000 All new EIS MODES MSSL/SLB-EIS/SP013.01

Watchdog Boot Entry Bootstrap Operational modes

Emergency safe Bake-out Standby Engineering

Manual

Ground command Ground or Autonomous entry EIS MODES MSSL/SLB-EIS/SP013.01

Instrument Status vs Mode

ICU (+ MHC CAM Av. Power Pk. Power Notes M PSU) o d e Off OFF OFF OFF 0.0 0.0 Boot ON OFF OFF 14.2 14.2 Standby ON OFF OFF 14.2 14.2 Engineering ON ON OFF 44.1 44.1 1 Bake-out ON OFF OFF 44.2 44.2 Manual ON ON ON 44.1 66.7 Auto ON ON ON 44.1 66.7 Emergency ON OFF OFF 14.2 14.2

(1) In Engineering mode the MHC is ON. However the mechanism power is OFF. Requested by Alec McCalden. (2) Power consumption is supplied by Alec McCalden EIS MODES MSSL/SLB-EIS/SP013.01

EIS mode transition notes

1. The bootstrap operations are TBD.

2. Standby mode is the first mode entered upon power up reset or watchdog resets.

3. Standby mode is commanded into Manual mode (all subsystems are ON) prior to science (sequence interpreter) operations. This is the “normal” EIS operations route.

4. Manual to Auto (sequence run) operations can be performed following the selection of a sequence number, i.e.

i. From Manual mode, select a sequence number. ii. Go to Auto mode iii. This operational procedure is recommended by the J-side (engineering meeting on the 23rd May 2000 at MSSL).

5. CCD bake-out operations are performed from bake-out mode (minimum power consumption mode). Following bake-out mode invocation (reported in the status packet), the CCD heater power level can be commanded in accordance to the temperature required.

6. Engineering mode is a special mode. This mode is requested by AJM.

7. Emergency safe is a mode unconditionally invoked by ground command or autonomously by the on-board health monitor upon detecting voltages, currents or temperatures out of range.