TESS Command and Telemetry Simulator (CTSIM
Contents
1. AC Alternating Current or Attitude Control depending on context APID Application Identification CCSDS The Consultative Committee for Space Data Systems CTSIM Command and Telemetry Simulator DHU Data Handling Unit ECI Earth Centered Inertial frame ECEF Earth Centered Earth Fixed frame EDU Engineering Development Unit EGSE Electrical Electronic Ground Support Equipment ESD Electro Static Discharge EICD Electrical Interface Control Document FSW Flight Software HDS Hybrid Dynamic Simulator ICD Interface Control Document ITAR International Traffic in Arms Regulations ITF Instrument Transfer Frame KVM Keyboard Video Mouse LVLH Local Vertical Local Horizontal frame MAESTRO Mission Adaptable Environment for Spacecraft Test and Real time Operations MAU Master Avionics Unit MIT Massachusetts Institute of Technology PPM Pulses Per Million PPS Pulse Per Second SDP Software Development Plan SIMICS PC Based emulation of the Rad750 Single Board Computer Includes ability to embed other models and simulations TESS Transiting Exoplanet Survey Satellite TCP IP Transmission Control Protocol Internet Protocol TVAC Thermal Vacuum testing UART Universal Asynchronous Receiver Transmitter UDP IP User Datagram Protocol Internet Protocol UPS Uninterruptible Power Supply VAC Volts AC Page 6 MKI 37 14020 Rev A 2 APPLICABLE DOCUMENTS 2 1 ORBITAL SCIENCES CORPORATION AND MIT DOCUMENTS2. DN TESS SYS 003 TESS Observatory States and Subsystem Modes TESS Spacecraft to Instrument Electrical Interface SE Control Document EICD TBD DHU FSW Users Manual 6150 GD4900 TESS FSW User s Manual 6150 SRS4910 TESS Flight Software FSW Subsystem Specification 2 2 OTHER DOCUMENTS CCSDS 203 0 B 1 Telecommand Part 3 Data Management Service CCSDS 102 0 B 4 Packet Telemetry Page 7 MKI 37 14020 Rev A 3 REQUIREMENTS 3 1 SIMULATION SYSTEM The CTSIM shall simulate a flight like command and telemetry interface to the MAESTRO EGSE via serial interface or Ethernet The CTSIM shall provide flight like electrical interfaces to the DHU that comply with the spacecraft to instrument EICD 6150232000R0 Only digital communication timing and command telemetry signals will be supported Power and analog interfaces will not be supported The CTSIM shall provide the capability to generate errors in timing commanding and communication to the DHU including Bad APIDs Length Checksum errors Framing errors Dropped packets Bad Secondary Header Function Code Bad CCSDS Secondary Header Checksum Turn on off 1PPS signal Arbitrarily adjust the phase of the 1PPS with respect to time at the tone message samo ao oD The CTSIM shall include flight software that provides flight like to the extent possible command telemetry and data flow for the required software tasks The CTSIM will
3. Interface Specifications 3 2 1 3 1 Physical Layer The CTSIM physical interface shall be compliant to the EICD Sections 4 3 Protocol and Framing and 4 4 1 Physical Layer 3 2 1 3 2 Simulator to Instrument Telecommand Packets The CTSIM Instrument Telecommand packets shall be compliant to the EICD Section 4 4 2 3 2 1 3 3 Simulator to Instrument Telemetry Packets The CTSIM Spacecraft Telemetry packets shall be compliant to the EICD Section 4 4 3 3 2 1 3 4 Instrument to Simulator Telemetry Packets The CTSIM shall be able to receive and process Instrument Telemetry packets in compliance with the EICD Section 4 5 3 2 1 4 DHU Interface Connector Specifications The CTSIM to DHU Interface Harness will be provided along with the CTSIM rack The harness shall mate with the DHU using the same interface connector types and pinouts as defined in the EICD 3 2 2 SPACECRAFT SIMULATOR SOFTWARE 3 2 2 1 Supported Tasks The CTSIM shall provide flight like command and data handling capability to the Instrument 3 2 2 2 Special Software Functions The CTSIM may be able to provide capabilities to inject faults into the Instrument interface This capability will be defined after some further discussion 3 2 2 3 Supported Modes The CTSIM shall support the TESS operating states and modes as defined in DN TESS SYS 003 as they pertain to commanding the DHU and receiving processing telemetry Only limited support for ACS operating modes will be provide
4. be a rack mounted workstation PC running Windows 7 64 bit Orbital Sciences shall provide an interface cable between the CTSIM rack and the DHU such that it provides flight like connectors for mating with the DHU The TESS Command and Telemetry database shall be maintained in the Orbital Sciences Corporation Composer system and released under Orbital s ISO Configuration Management process MAESTRO and the Command amp Telemetry database will be resident on a Linux Workstation mini or micro tower running Red Hat Enterprise Linux This workstation will be mounted inside the CTSIM rack A rack mounted keyboard video monitor KVM switch will be installed in the CTSIM rack for control of the CTSIM and MAESTRO EGSE Page 8 MKI 37 14020 Rev A 3 2 SYSTEM INTERFACES AND FUNCTIONS Orbital Provided MIT Provided Discrete I O 4 CMD 4 TLM 115 2 kbps CMD 115 2 kbps TLM 10 100 1000 Ethernet Switch MAESTRO Database Ethernet CTSIM Block Diagram Figure 3 1 CTSIM Block Diagram 3 2 1 SPACECRAFT SIMULATOR INTERFACES The CTSIM shall include the following interfaces 1 TCP IP or UDP IP socket for command and telemetry 2 TCP IP or UDP IP socket for Hybrid Dynamic Simulator HDS Page 9 MKI 37 14020 Rev A 1 Pulse Per Second over RS 422 One full duplex 115 2 kilobaud RS 422 level serial interface Four digital command output signals Four digital telemetry input signals AC Power POS Rew 3 2 1 1 CTSIM Interf
5. M ists ces seas See Re eee ie i Ae ee el ees 8 3 2 System Interfaces and FUNCTIONS see 9 3 2 1 Spacecraft Simulator Interfaces sse eee eee eee 9 3 2 2 Spacecraft Simulator SoTWware eee ee 11 3 2 3 Spacecraft Simulator Enclosure eee 12 3 2 4 Spacecraft Simulator Environment ccccccccceccecceeeceeeceeeceeeeeeeeeeeeeeeeeeeeeeeeees 12 4 Quality amp Security acess seis heed annaia sene aegecene aan cuca deny ccenbedeieons KERNE EES dake 13 4 1 Nameplate and Marking eeerrnnnnnnnnonovnnnonennnnanonnonenenennrnannnennenennenennnnnnnnenennnnenennnnanennene 13 42 ESDumaaaqddertatbususaeteteaesuderevmusrd veken 13 4 3 Safe to mate Information eee 13 4 4 ITAR and Orbital Proprietary sss esse 13 4 5 Transport ereteken paineinen cdavevecscecens baste KEA LA aia AA a Ma EAE AAEE aaka Ka An Ena PEREA Ea AESA 13 User s Manual and Training eee eee 14 Software and C amp T Database Deliveries eee 15 NOTES 16 G TED TER SN aber 16 8 Appendix A misvisende deddgg nrk edt Desde eh canttaeedducesteecanececuat dead arab genn ub dade 17 8 1 Command and Telemetry Simulator Setup Configuration and Maintenance 17 9 Append X S ania aber sen ed 18 9 1 Parts Listi aai haan tee oe ad lacie ee eet eee 18 Page 3 MKI 37 14020 Rev A TABLE OF FIGURES Figure 3 1 CTSIM Block Dinan sas sse eee eee 9 Figure 3 2 Male DB9 Connector Pinout Connector Face View eee eee eee 10 Figure 3 3 CTSIM Rack Gontiguration sicci
6. MKI 37 14020 Rev A TESS Command and Telemetry Simulator CTSIM Performance Specification 37 14020 RevA formerly Orbital 6150 PF7201 Prepared by Orbital Sciences Corporation and adopted by MIT Kavli Institute for Astrophysics and Space Research APPROVED BY Zahra Khan TESS Deputy Systems Engineer APPROVED BY Bob Goeke TESS DHU Technical Lead APPROVED BY Kris Clark TESS Systems Engineer APPROVED BY Tony Smith TESS Instrument Program Manager RELEASED BY Demitrios Athens TESS Configuration Management Administrator MKI 37 14020 Rev A REVISION HISTORY REV A DATE REASON FOR CHANGE CHANGE P Initial Release Submittal to MIT for completion and release MKI Document Release ECO 37 157 6 Nov 2014 SECTION s AFFECTED All All Page 2 MKI 37 14020 Rev A TABLE OF CONTENTS Table ot FIQures 2 N Aird inne LA ard dk TEA 4 List Of Tables itn he alcatel we a Se nia Aa A eS 4 1 Introduetion inva isnende erte tat a Eei ea e oa ataa Eaa AEEA engene 5 1 1 SCOpa a en ee T 5 1 2 Acronyms and Abbreviations ccccccccccecceeeeeeeeeeeeeeeeeeeeeeeeeeeeeesaeaaaeaeneeeeeeeesaeaenneeenees 6 2 Applicable Documents rnrnnnnnnnnnnnnannnnnnonavnnnnnennnnnnnnnnnnnonernrnanannnnenennennnennnnnnenennnnenennnnanenee 7 2 1 Orbital Sciences Corporation and MIT Documents 7 2 2 Other Documents TTT 7 3 REGUIFGMONUSS TTT 8 3 1 Simulation SYStE
7. ace Connector Specifications 3 2 1 1 1 RS 422 1PPS Serial Interface Connector The RS 422 1PPS Serial Interface Connector shall be a DB9 Male connector as shown in Figure 3 2 G amp GG S Figure 3 2 Male DB9 Connector Pinout Connector Face View 3 2 1 1 2 Command Telemetry Interface Connector amp MIT EGSE Connector The Command Telemetry Interface Connector shall be a DB9 Male connector as shown in Figure 3 2 3 2 1 2 Interface Electrical Specifications 3 2 1 2 1 Time Synchronization Pulse The CTSIM shall provide a 1PPS signal to the Instrument that is compliant with the EICD Section 4 6 A and 4 6 B 3 2 1 2 2 Discrete Digital Command Telemetry The CTSIM shall provide four discrete 5V CMOS single ended output signals for commanding to the DHU The CTSIM shall provide four discrete 5V CMOS single ended input signals with pull up resistors to 5V for DHU telemetry 3 2 1 2 3 Power Requirements The CTSIM shall be powered by AC in the range of 100 240 VAC at 50 Hz or 60 Hz The CTSIM shall draw no more than 1900W worst case in any configuration AC Input Description Range Voltage amp Frequency 100 240 VAC 50 60 Hz Power 1900 W Table 3 1 AC Input Specifications Page 10 MKI 37 14020 Rev A The CTSIM shall include an uninterruptable power supply UPS capable of providing maximum power for a minimum of 6 minutes 3 2 1 3 CTSIM Command and Data Handling
8. d initially The CTSIM should support the ability to tell the DHU that the ACS subsystem is operating in the various modes that are defined to facilitate DHU testing 3 2 2 4 Command List IBD MAESTRO Commands sufficient to command the delivered tasks will be provided 3 2 2 5 Telemetry List IBD MAESTRO Telemetry sufficient to view the status of delivered tasks will be provided Page 11 MKI 37 14020 Rev A 3 2 3 SPACECRAFT SIMULATOR ENCLOSURE The CTSIM will be configured in a single ruggedized 19 inch rack system The rack configuration will be approximately as shown in Figure 3 3 J1 1PPS J2 SERIAL CMD TLM Dell R7610 Workstation 10U UPS OPTIONAL Figure 3 3 CTSIM Rack Configuration 3 2 4 SPACECRAFT SIMULATOR ENVIRONMENTS The CTSIM will be designed to survive the thermal environments specified in Table 3 2 Temperature Description Range Operating 10 to 32 C 50 to 90 F Non operating 20 to 55 C 29 to 131 F Relative Humidity 30 to 80 non condensing Table 3 2 CTSIM Thermal Environment Specifications Page 12 MKI 37 14020 Rev A 4 QUALITY amp SECURITY 4 1 NAMEPLATE AND MARKING TBD 4 2 ESD The front and back of the rack inside and outside shall be marked with ESD stickers indicating that the rack contains ESD sensitive electronics 4 3 SAFE TO MATE INFORMATION CTSIM safe to mate procedures shall be included in the setup and configuratio
9. n documentation delivered with the CTSIM hardware 4 4 ITAR AND ORBITAL PROPRIETARY The information contained on the hard drive of the CTSIM shall be considered ITAR Tech Data The information on the hard drive of the CTSIM shall be considered Orbital Proprietary The hard drive of the CTSIM shall be encrypted The encryption password for the hard drive should be a combination of the program name the date of the programs phase B start YYYYMMDD and one of the following characters l e g TESS20130801 4 5 TRANSPORT The top of the rack shall have a sticker or placard with the ESD and environmental requirements clearly marked Page 13 MKI 37 14020 Rev A 5 USER S MANUAL AND TRAINING A CTSIM User s Manual shall be developed and delivered with the CTSIM hardware CTSIM training shall be developed CTSIM training shall include the following topics 1 System overview 2 Theory of operation 3 EGSE interfaces a MAESTRO interfaces b Differences to flight MAESTRO configuration 4 Hardware a Description of components b Software task implementation and interfaces 5 Software a Description of simulations b Software task implementation and interfaces 6 Hardware setup a Unpacking b Setup and configuration c Maintenance 7 Problem Reporting a Software b Hardware Page 14 MKI 37 14020 Rev A 6 SOFTWARE AND C amp T DATABASE DELIVERIES Orbital CTSIM Software will be configuration managed and formall
10. s Mania eee 12 LIST OF TABLES Table 3 3 AC Input Specifications esse eee ee ee eee 10 Table 3 4 CTSIM Thermal Environment Specifications cccccccccceccececeeeeeeeeeeeeeeeeeeteeeeeeens 12 Table 7 1 TBDTBR Listussadqsuasdm ark Aa ermine ee ld eas 16 Page 4 MKI 37 14020 Rev A 1 INTRODUCTION 1 1 SCOPE This CTSIM performance specification establishes the baseline set of requirements needed to verify the ICD for the TESS Spacecraft to Instrument EICD and ground interfaces The focus of the CTSIM implementation is to verify timing command and telemetry interfaces and protocols In addition the CTSIM provides the user with an incremental set of flight like to the extent possible flight software FSW functions and tasks The CTSIM implementation will provide the necessary interface and safe to mate procedures that will allow interface with flight hardware The CTSIM is not intended to function as an electrical simulator No effort has been made to provide or simulate power switch characteristics or thermal sensing This document may in some cases duplicate specific software or interface requirements but effort has been made to avoid where possible Requirements that are duplicated in this document are in place to assure that specific software and hardware capabilities are available to support the simulation Page 5 MKI 37 14020 Rev A 1 2 ACRONYMS AND ABBREVIATIONS
11. y released using processes compliant to the TESS SDP Orbital will deliver executable binary images with the CTSIM hardware and electronically if future releases are required The TESS Command and Telemetry MAESTRO Database for the CTSIM Software will be configuration managed and formally released by Orbital Page 15 MKI 37 14020 Rev A 7 NOTES 7 1 TBD TBRLIST Section Text 3 2 2 4 TBD MAESTRO Commands sufficient to command the delivered tasks will be provided 3 2 2 5 TBD MAESTRO Telemetry sufficient to view the status of delivered tasks will be provided 4 1 Nameplate and Marking Table 7 1 TBD TBR List Page 16 MKI 37 14020 Rev A 8 APPENDIX A 8 1 COMMAND AND TELEMETRY SIMULATOR SETUP CONFIGURATION AND MAINTENANCE This section to be developed in a subsequent release Page 17 MKI 37 14020 Rev A 9 APPENDIX B 9 1 PARTS LIST Item Item Description ae Dell Precision R7610 2U Rack Workstation Xeon E5 2600 Windows 7 64 bit Pro 64GB RAM 1 Dell Precision R7610 RAID 140 6 PEX45232485 APortPCleSerialCombocad o 8 lHardCase 1SK8 R912U20 SKB Roto Shock RackCases12U20 S 9 SMT3000RM2U APC Smart UPS RM SMT3000RM2U 2700W 3000VA 2U 120V LCD UPS System __ Cyberpower CPS 1215RMS Rackmount PDU Power Surge Strip 12 Outlet 15A 1800VA 1800 10 Power Strip Joules 11 2U 16x DB9 Panel 16 Port DB9 2U Rack Mount Panel WRP 09 16 Page 18
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