5.0 Example Scenarios

This section illustrates how some of the features of the instrument may be used in combination to perform various procedures. such as restarting the instrument after a power-off. The actual procedures used in-flight will probably be different, due to system requirements beyond that of the software, or due to experience developed as the system is used.

5.1 On-Orbit Checkout

The purpose of the on-orbit check-out is to verify that none of the hardware broke during launch and on-orbit insertion.

TBD - Talk to Bob and get a better picture of what should go here. Maybe variation of short-form, long-form?

  1. Pre-Power On check of passive analog telemetry and S/C conditions

  2. DPA Side-A Power On

  3. DPA Voltage, Current and Thermal Check

  4. Select BEP A

  5. Cold Boot BEP (prior to cold boot after DEA power-on. If a problem arose in commanding DEA after latter cold boot, ya might not know if it was the cold-boot, or the DEA interface which killed ya).

  6. Some form of Command Check (e.g. send a "no-op" software command and check that ya gets an echo).

  7. ROM Dump and Compare (does a good telemetry check)

  8. System Configuration Dump (verify temperature set-points prior to DEA power-on, etc.)

  9. FEP Power On Check

  10. DPA Voltage, Current, and Thermal Check

  11. FEP I-cache Read Check (more to test FEP aliveness than anything else)

  12. DEA Side-A Power On

  13. DPA/DEA Voltage, Current and Thermal Check

  14. Cold-Boot BEP (to load System Configuration Info into newly powered DEA board)

  15. Start interface board DEA Housekeeping

  16. Check DEA housekeeping info (including relay states)

  17. ...

James E. Francis
Last modified: Wed Jan 12 14:00:42 EST