| Acronym | Meaning |
 | EL | Entry Interface |
| BSR | Bite Status Register |
| VP | Vertical Polarization |
| DIS | Documentation Index System |
| PPM | EPacific Plate Motion Experiment |
| MUSAT | Canadian Government Satellite |
| HAL | Houston Aerospace Language |
| GSFC | Goddard Space Flight Center (Greenbelt |
| PDRSS | Payload Development And Retrieval System Simulator |
| DDT&E | Design |
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