| Acronym | Meaning |
| VCO | Voltage Controlled Oscillator (Oscillation) |
| ED | Explosive Device |
| OOT | Out Of Tolerance |
| RIB | Recoverable Item Breakdown |
| ESTA | Electronic System Test Equipment |
| SWT | Sextant |
| PORCN | Production Oi-der Records Change Notice |
| RTG | Radioisotope Thermoelectric Generator |
| RMS | Root-Mean-Square |
| PMC | Payload Monitoring And Control |