| Acronym | Meaning |
 | IMPD | Impedance |
| RTC | Real-Time Command |
| CSAS | ComPuterized Status Accounting System |
| NFCS | NNFCSNuclear Forces Communications Satellite |
| SBA | Structure Borne Acoustic |
| CAM | R Camera |
| PGA | Power Generating Assembly |
| CDSC | Communications Distribution And Switching Center |
| SDR | Space Division Regulation |
| MM | Mass Memory |
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