| Acronym | Meaning |
| CDI | Course Deviation Indicator |
| SCO | Subcarrier Oscillator |
| SL-SSS | Spacelab Subsystem(s) Segment |
| S/SYS | Subsystem |
| MAX | Maximum |
| SD | LStandard Distribution List |
| MDE | Mission Dependent Experiment |
| SOM | Standard Operating Manual |
| HV | High Voltage |
| TCE | Thermal Canister Experiment |