| Acronym | Meaning |
| BRK | Brake |
| CS | Consumables Status |
| PIA | Preinstallation Acceptance |
| EPDU | Electrical Power Distribution Unit |
| VLBI | Very Long Baseline Interferometer |
| ND | NASA Document |
| DRIRU | Dry Rotor Inertial Reference Unit |
| DV | Differential Velocity |
| LSP | Least Significant Portion |
| SPHER | Spherical |