| Acronym | Meaning |
| FCEI | Facility Contractor End Item |
| M | Mach |
| CMPR | Compare |
| HFX | High Frequency Transceiver |
| SEPS | Solar Electric Propulsion System |
| PM | PMAPerformance Monitor Annunciator |
| DISENG | Disengage |
| IPS | Infrared |
| UDS | Universal Documentation System |
| LSB | Least Significant Bit |