PSMC SOP Procedures

These are the new procedures. The links in the “Existing FOT Procedure” column and dates in the “Previous Update” column refer to the most recent versions of the FOT procedures. All approved flight procedures are listed here.

Sec Ver New SOT
Procedure		 Existing FOT
Procedure		 Previous
Update		 Description Download
TSV PS TeX PDF
4.3 2.1 dpaa_on SOP_61038 07/17/99 Turn on DPA A @ @ @ @
4.4 2.1 dpab_on SOP_61037 07/18/99 Turn on DPA B @ @ @ @
4.5 2.1 deaa_on SOP_61036 07/19/99 Turn on DEA A @ @ @ @
4.6 2.1 dpaa_off SOP_61035 07/19/99 Turn off DPA A @ @ @ @
4.7 2.1 dpab_off SOP_61034 07/19/99 Turn off DPA B @ @ @ @
4.8 2.1 deaa_off SOP_61033 07/19/99 Turn off DEA A @ @ @ @
4.29 1.0 deab_off
Turn off DEA B @ @ @ @
4.30 1.0 deab_on
Turn on DEA B @ @ @ @
5.9 2.2 switch_deaa_b
Switch from DEA A to DEA B @ @ @ @
5.15 1.0 switch_deab_a
Switch from DEA B to DEA A @ @ @ @

PSMC Anomaly Recovery Scenarios

DPA-A Anomaly
  1. Check that the anomaly isn't due to the failure of an A/D
    in the RCTU, or to noise in the PSMC serial digital flags.
  2. Run dpaa_on (SOP_61038). Repeat if it fails the first time.
  3. Exit if successful.
  4. If DPA-B off and/or disabled, run dpab_on (SOP_61037).
  5. Run switch_bepa_b (SWAP_BEPA_B).
  6. Notify mission planning that FEPs 0,1,2 may be unavailable.

DPA-B Anomaly
  1. Check that the anomaly isn't due to the failure of an A/D
    in the RCTU, or to noise in the PSMC serial digital flags.
  2. Run dpab_on (SOP_61037). Repeat if it fails the first time.
  3. If unsuccessful, notify mission planning that FEPs 3,4,5
    may be unavailable.

DEA-A Anomaly
  1. Check that the anomaly isn't due to the failure of an A/D
    in the RCTU, or to noise in the PSMC serial digital flags.
  2. Run the deaa_on (SOP_61036). Repeat if it fails the first time.
  3. If successful, run steps 5-7 of switch_deaa_b (SOP_?) to reboot
    the BEP and establish thermal control over the focal plane;
    then exit, continuing operations using DEA-A.
  4. Otherwise, run switch_deaa_b (SOP_?).
  5. Exit if successful, continuing operations using DEA-B.
  6. Assuming that switch_deaa_b failed in step 8.n, run steps
    1-4 and part “a” of step 8.n of switch_deab_a (SOP_?).
  7. Run switch_deaa_b (SOP_?), omitting step 8.n.
  8. Continue operations using DEA-B and notify mission
    planning that a pair of CCDs may be unavailable.

DEA-B Anomaly (after DEA-A Failure)
  1. Check that the anomaly isn't due to the failure of an A/D
    in the RCTU, or to noise in the PSMC serial digital flags.
  2. Run deab_on (SOP_?). Repeat if it fails the first time.
  3. If successful, run steps 5-7 of switch_deab_a (SOP_?) to reboot
    the BEP and establish thermal control over the focal plane;
    then exit, continuing operations using DEA-B.
  4. At this point, there may be nothing further to
    be done to restore power to the DEA, but keep trying!
  5. Run switch_deab_a (SOP_?).
  6. Exit if successful, continuing operations using DEA-A.
  7. Assuming that switch_deab_a failed in step 8.n, run steps
    1-4 and part “a” of step 8.n of switch_deaa_b (SOP_?).
  8. Run switch_deab_a (SOP_?), omitting step 8.n.
  9. Continue operations using DEA-A and notify mission
    planning that a pair of CCDs may be unavailable.