| Acronym | Meaning |
 | SPEE | Special Purpose End Effector |
| V/C | Velocity Counter |
| LR/LD | Line Receiver/Line Driver |
| EL | Engineering Instruction |
| SAA | Safety Assurance Analysis |
| SE&I | System Element |
| DAS | Documentation Accountability Sheet |
| SC | Scale |
| PRD | Procurement Regulation Directive |
| HEMI | Hemispherical (S-Band Antenna) |
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