QB50 System Requirements Document

FIPEX on QB50 Date: 06.02.2013--- DRAFT---- Issue: 1.0.2ICD Page: 21 / 253.4 Example SU Command Sequence ScriptAn example of the user-readable ASCII command sequence script is shown below:OBC_SU_ON @19:00:00SU_HC @ 19:02SU_SP 0x06 0x10 0x10 @19:03SU_SP 0x06 0x11 0x0a @19:04SU_SP 0x06 0x11 0x23 @19:05SU_FULL @19:06SU_HK 32 @19:20OBC_SU_OFF @20:02OBC_SU_ENDTable 3-2 - SU Commanding Script ExampleNOTES:1) Commands prefixed by “OBC_” are attended for the OBC script handler to interpretand execute.2) Commands prefixed by “SU_” are to be sent to the Science Unit.3) The TIME field “@t” is NOT sent to the SU, but interpreted by the OBC as the time atwhich the script command is to be executed. When “@t” is set to “@NOW”, the OBCshall execute the command immediately.4) The RDY flag will be asserted in response to SU_HC, SU_FULL commands, and theOBC shall collect the SU data packet, time-stamp the packet, and store it to localmass-storage for download when required.The above ASCII script is parsed by the SCRIPT_ENCODER tool that shall produce theencoded BYTE packet of the script to be uplinked to the CubeSat.3.5 Data Handling and ControlTBDName:ILR-RFS_FPXQB50_ICD_1000