| Acronym | Meaning |
 | SCF | Sunnyvale Control Facility |
| BCE | Backup Control Electronics |
| HYDROGEN | ReHydrogen Relief |
| RTD | Resistance Temperature Device |
| MICIS | Material Information Control And Information System |
| MOPI | Max Rate Output Initiator |
| LEC | Lockheed Electronics Company |
| STSOPO | Off Ice (JSC) |
| ATCS | Active Thermal Control System |
| CPM | Cycles Per Minute |
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