| Acronym | Meaning |
 | ECAS | Experiment Computer Application Software |
| PM | PMADPerformance Monitor Annunciation Driver |
| NO | Normally Open |
| ST | Star Tracker |
| ETR | Eastern Test Range (ESME Preferred) |
| CMS-2 | Cambridge Monitoring System (IBM Computer Program) |
| AGOSS | Automated Ground Operations Scheduling System |
| ERV | Expiratory Reserve Volume |
| HSU | Helium Service Unit |
| SF | Signaling Frequency |
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