| Acronym | Meaning |
| IN | Inlet |
| SSC | Subsystem Sequence Controller |
| VSO | Very Stable Oscillator |
| SEUL | Support Equipment Utilization List |
| MCIU | Mission Control And Interface Unit |
| MMACS | Maintenance Management And Control System |
| T | Top |
| SLCL | ShoP/Lab Configuration Layout |
| PCR | Program Change Request |
| V&DA | Video And Data Acquisition |