| Acronym | Meaning |
| M-M-L-S | Model-Modes-Loads-Stresses |
| N/D | Need Date |
| LPTTL | Low Power Transistor-Transistor Logic |
| SFP | Single Failure Point |
| HGA | High Gain Antenna |
| STC | Systems Test Complex |
| SCB | Simulation Control And Training SYstem |
| NORDSAT | Scandinavian Countries Broadcast Satellite |
| DDPS | Digital Data Processing System |
| OBS | Operational Bioinstrumentation System |