| Acronym | Meaning |
| HVAC | Heating, Ventilating, Air-conditioning |
| GDA | Gimbal Drive Actuator/Assembly |
| SCAT | Space CommunicationandTracking |
| PRT | PulseRepetitionTime |
| MA | Master Alarm |
| MACH | Machine |
| PM | Phase Modulation |
| RTG | Radi0isotope Thermal Generation |
| EMN | Engineering Management Network |
| NTTF | Network Test And Training Facility |