| Acronym | Meaning |
![](file.png) | DDAS | Digital Data Acquisition System |
![](file.png) | DFRN | PRESSDifferential Pressure |
![](file.png) | PCC | Payload Control And Checkout |
![](file.png) | SD | Specification Document |
![](file.png) | HF | Hydrogen Fill |
![](file.png) | MLB | Multilayer Board |
![](file.png) | MOD | Mission Objectives Document |
![](file.png) | PGRWG | Payload Ground Requirements Working Group |
![](file.png) | ED | Explosive Device |
![](file.png) | FIFO | First In-First Out (High Speed Data Buffers) |