| Acronym | Meaning |
| RBDE | Radar Bright Display Equipment |
| EO | Earth Orbit |
| FIAR | Failure Investigation Action Report |
| FAX | Facsimile Transmission |
| DAC | Data Acquisition And Control |
| I-LOAD | Initial-load |
| CTP | Communications Timing Procedure |
| G&C | Guidance And Control |
| CSAM | Crinkled Single Aluminized Mylar |
| ELF | Extremely Low Frequency (1 Hz To 3 KHz) |