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System Requirements
1. FloripaSat total stored chemical energy will not exceed 100 Watt-Hours.
Compliance with CDS 3.1.4
2. In the actuated state, the FloripaSat Kill Switches shall electrically disconnect the
power system from the powered functions, this includes while it is integrated in the P-POD.
Compliance with CDS 3.3.1, 3.3.3
3. FloripaSat shall include a RBF pin.
Compliance with CDS 3.3.7
4. All diagnostics and battery charging within the P-POD shall be done while the deployment switch is depressed.
Compliance with CDS 3.3.6.1
5. FloripaSat kill switch toggles from the actuated state and back, the transmission and deployable timers shall reset to t = 0.
Compliance with CDS 3.3.5
6. FloripaSat will have one RF inhibit and RF power output of no greater than 1.5W.
Compliance with CDS 3.3.9.1
7. FloripaSat outside static magnetic field must not be higher than 0.5 Gauss of the natural Earth Magnetic Field
Compliance with CDS 3.1.10
8. EPS system shall provide a steady voltage for the other modules of the satellite, except joinville payload. The voltage variation must follow item 8 of EPS requirement.
Team definition
9. Main communication channel (OBDH and EPS) must have at least a 60 kbps data rate and a maximum error of 1 in 100 transmissions.
Team definition
10. Data channel (OBDH uC and TT&C uC) must have at least a 45 kbps data rate and a maximum error of 1 in 100 transmissions.
Team definition
11. Redundancy channel between TT&C and EPS must have at least a 4.8 kbps data rate and a maximum error of 1 in 100 transmissions.
In Case OBDH communication fails, there is an alternative channel between EPS and TT&C.
12. Antenna deployment buses must be dedicated.
To reduce the possibility of failure
13. Antenna deployment buses must have at least a 90 kbps data rate and a maximum error of 1 in 100 transmissions.
Team definition
14. All microcontrollers of the core modules shall have a debug bus with at least a 4.8 kbps data rate and a maximum error of 1 in 100 transmissions.
Team definition
15. FloripaSat must transmit relevant data through Beacon. Data is defined in the TMR 19 requirement.
Team definition
16. FloripaSat must store data of the mission, in a non-volatile memory, of the last 1 day.
Team definition
17. FloripaSat must be able to downlink a specific type of data. The specificity of the data is defined at item 16 of OBDH Requirements.
Team definition
18. FloripaSat must have at least the following telecommands: ping, shutdown and telemetry downlink.
Team definition
19. Deployment of all four antennas will be handled by both, TT&C and OBDH, microcontrollers.
To add redundancy in the antenna deployment
20. During shutdown mode, FloripaSat must not transmit any RF signal for 24 hours. Team definition
21. On first boot after launch, FloripaSat must wait 45 +- 1 minutes to deploy its antennas.
Team definition
22. During Normal mode FloripaSat must behave according the energy level. The corresponding behavior is defined here.
Team definition