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# System prepended metadata

title: CDH - Information needed for the Balloon Mission

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CDH - Information needed for the Balloon Mission
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**Subsystem:**


### Subsystem required Commands for Balloon Mission

Explanation of Table 1:
1. Function: Start with thinking of the functionality your subsystem needs to fulfill.
2. Cmd Name: Add the required command(s) to fulfill one single functionality. Write down the name of each.
3. Description: Briefly describe what the commands execute.
4. Timing: When shall the command be executed? Choose between the following possibilities.
    * directly = directly upon receiving the command
    * absolute = at a particular time (11:59 am)
    * delta = specific time duration after receiving the command (10min)
5. Parameter: Are further parameters needed to execute the command?
    **Maximum of 8 parameters (each parameter max. 64 bytes) per command!**
    Choose between:
    * yes
    * no
    * optional
6. AtG: Is any direct answer to ground required?
    * yes (if data is needed to execute the next command)
    * no (only send standard confirmation that the command has been executed)
7. Comment: Write down comments and specific information for CDH. For instance add the maximum acceptable delay of the command execution.

#### Table 1: Subsystem required Commands
| Function     | Cmd Name           | Description         | Timing     | Parameter | AtG | Comment |
| ------------ | ------------------ | ------------------- | ---------- | --------- | --- | ------- |
| *Detumbling* | *start detumbling* | *start to detumble* | *directly* | *yes*     |     |         |
|              | *end detumbling*   | *end detumbling*    | *directly* | *yes*     |     |         |


### Subsystem required Data for Balloon Mission

Explanation of Table 2:
1. Value: Name the required data/signal/telemetry.
2. Description: Describe what information the data contains with units.
3. Type: Define the data type (byte, int, float,...).
4. Size: Add the size of the data in byte.
5. Beacon: Shall the data be sent to ground once every 60 seconds? Choose between yes and no.
6. Logging: Shall the data be saved on a SD card? Choose between yes and no.

#### Table 2: Subsystem required Data
| Value    | Description                     | Type   | Size [byte] | Beacon | Logging |
| -------- | ------------------------------- | ------ | ----------- | ------ | ------- |
| *uptime* | *Time since the last reset [s]* | *byte* | *1*         | *yes*  | *yes*   |


