| Acronym | Meaning |
 | ETI | Elapsed Time Indicator |
| PIECP | Preliminary Impact Engineering Change Proposal |
| SRS | Software Requirements Specification |
| PD | Preliminary Design |
| GDSO | Ground Data Systems Officer |
| PR | Pair |
| PFS | Percent Full Scale |
| DOF | Direction Of Flight |
| NAM | National Association Of Manufacturers |
| GES | Goddard Experiment SuPport System |
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