| Acronym | Meaning |
| DO | Discrete Output |
| FSS | Fixed Service Structure |
| FT&C | Formal Training And Certification |
| EAT | Environmental Acceptance Test |
| ESOC | European Space Operations Center |
| OCC | Office Of Contract Compliance |
| DIH | Discrate Input High |
| SEA | Scanning Electrostatic Analysis |
| AIRS | Atmospheric Infrared Sounder |
| PHMC | Probe Heater Motor Controller |