| Acronym | Meaning |
| DP | Double Pole |
| HETM | Hybrid Engineering Test Model |
| GAIN | Graphic Aids For Investigating Networks |
| PP | Planning Package |
| EMG | Electromyograph(gram) |
| STC | Standard Test Configuration |
| ELDV | Electrically Operated Depressurization Valve |
| LDEC | Lunar Docking Events Controller |
| SIMU | Simulated Inertial Measurement Unit |
| LCA | Load Controller Assembly |