| Acronym | Meaning |
| TWD | Twisted Double Shielded |
| MTEM | Maintenance Test Equipment Module |
| LOV | Loss Of Visibility |
| SPA | Signal Processor Assembly |
| IDCA | Inverter Distribution And Control Assembly |
| VIDD | Vertical Interval Data Detector |
| CDT | Compressed DataTape |
| CRP | Configuration Requirements Processing |
| T-0 | Takeoff |
| PD&RS | Payload Deployment And Retrieval Subsystem |