QB50 System Requirements Document

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TITLE: QB50 m-NLP Science Unit Interface Control DocumentDoc. No. MSSL-QB50-ID-12001-DRAFT a5.3.5 OBC_SU_OFF (0xF0)This SCRIPT command is ONLY read & interpreted by the OBC to turn the OFF SU attime given by “@t”.5.3.6 OBC_SU_END (0xFF)This SCRIPT command is ONLY read & interpreted by the OBC to stop runningSCRIPT at time given by “@t”.5.3.7 SU_STDBY (0x02)This command is sent to the SU to put the SU into the STANDBY state at time given by“@t”.CMD_IDLEN= 0x02= 0x00 number of BYTES to followThe HV line is turned OFF when going to STDBY state5.3.8 SU_RSP (0x03)This command is sent to the SU to request the science response packet (after runningSU_FULL or SU_BURST command), when the RDY signal is asserted at time given by“@t”.CMD_IDLEN= 0x03= 0x00 number of BYTES to followResponse packet format is:RSP_IDLEN:Bn= 0x03= one BYTE value representing the number of 16-bit WORDS tofollow the LEN parameter= packet data in BYTESPage 15 of 27
TITLE: QB50 m-NLP Science Unit Interface Control DocumentDoc. No. MSSL-QB50-ID-12001-DRAFT a5.3.9 SU_DEPLOY (0x04)NOTE: The DEPLOYMENT command “SU_DEPLOY” can ONLY be run from IDLEstate, after the BIAS levels has been DISABLED – see SU_BIAS_EN & SU_BIAS_DIScommands for details.“SU_DEPLOY” command format is:CMD_IDLEN= 0x04= 0x02d_time = 1-BYTE : Boom deployment time (sec) (default 3 sec)n_boom = 1-BYTE : 0000_00, b1, b0 : b1 = 0, b0 = 0 (Boom 1)b1 = 0, b0 = 1 (Boom 2)b1 = 1, b0 = 0 (Boom 3)b1 = 1, b0 = 1 (Boom 4)The RDY flag shall be asserted when SU_CALM has finished, and the deployment datapacket with confirmation on boom number is read by the OBC using Response packet format is:RSP_IDLEN:Bn= 0x03= one BYTE value representing the number of 16-bit WORDS tofollow the LEN parameter= packet data in BYTESThe details of the BYTES in a deployment data packet structure are given in ND75.3.10 SU_CONT (0x08)This command runs a CONTINOUS measurement series to take low time resolutionelectron density measurements, with continuous spatial coverage.NOTE: The “SU_CONT” command can ONLY be run from IDLE state, after the BIASlevels has been ENABLED – see SU_BIAS_EN & SU_BIAS_DIS commands for details.“SU_CONT” command format is:TBDFor each CONTINOUS run, the measured continuous densities will be a part of theCONTINOUS data packet.Page 16 of 27
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QB50System Requirementsand Recommen
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Science Payload Interface Control D
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1. CubeSat System Requirements1.1 S
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Figure 3: 3U CubeSat extended volum
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possibility of using other team’s
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QB50-SYS-1.5.11. Every science pack
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3. Display which ground station is
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2.3 Spacecraft ContaminationQB50-SY
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4.1 MechanicalAs shown in Figure 5,
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Attachment A: INMS Interface Contro
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CHANGE RECORDIssue Date Sections ch
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5.9.4 OBC_SU_ON (0xFB) ............
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2 Normative and Informative documen
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CUBESAT side connector to attach to
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4.1.1 SWITCHED Power PinsThe +5, +3
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4.4 Power BudgetThe power budget is
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5.3 Command & Response Handling5.3.
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5.4 Command Packet Structure to Sci
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5.7 SU State Transition DiagramThe
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5.9.2 Script TIME Field - @tTime-ta
Page 47 and 48: 5.9.9 SU_STIM (0x04)This command wi
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Page 51 and 52: 5.9.14 SU_HK (0x09)The HOUSE_KEEPIN
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Page 55 and 56: 7 Attitude ControlThe CubeSat shall
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