Payload Laptop Terminal (PLT) Overview

1. Instructor: Yuichi Ito Satoshi Kawaguchi (ito.yuichi@jamss.co.jp)(kgucci@jamss.co.jp) Notice : This technical data is furnished on the condition that it will be used by and disclosed to the receiving Cooperating agency and its contractors and sub contractors only for the purposes of fulfilling the cooperating agency’s responsibilities under the Space Station Intergovernmental Agreement (IGA) and Memorandum of Understanding (MOU). It shall not be used for any other purpose, nor disclosed or retransferred to any other entity or government without prior written permission of the Japan Aerospace Exploration Agency (JAXA). JEM PLT OV 21407 • Payload Laptop Terminal (PLT) • Overview

2. Objectives After this lesson trainee will be able to: • Purpose of PLT - Explain the purpose and operational concept of PLT. • PLT Interface and architecture - Identify the JEM C&DH component that communicates with PLT. - Identify the softwares installed in PLT. • Perform following tasks according to ODF without instructor’s assistance • - PLT activation/Deactivation - IPU bit rate change for VRU via PLT

3. Lesson Outline Page: 5 6 8 9 10 12 13 • Contents: • Purpose of PLT • PLT Interfaces • PLT Architecture • Key points • PLT operations for P/Ls control • Acronyms • Appendix

4. Intentionally Blank

5. Purpose of PLT Purpose of PLT - PLT is one of the onboard laptop computer (A31p) dedicated to JAXA payload operations. Operational Concept Ground Commanding as primary operation - Ground is responsible for commanding/monitoring JAXA Payloads. - However, there are the cases that ground can not operate the P/Ls. In these cases, crewmember might be requested to command/monitor JAXA Payloads as backup of ground. PLT will be used as a backup solution no alternative method for missions success

6. PLT Interfaces LAB JPM JEF C&C MDM Control Bus EXT-1, 2 PCS PCS JCP System Local Bus 2 PDH SLT Payload Bus 2 Payload Bus E Payload Bus 1A Payload Bus 3 JAXA Payload PLT JAXAPayload Payload Bus 1B JAXA Payload PLT JAXA Payload PLT can be connected to PDH via Payload Bus E or Payload Bus 3

7. Utility Outlet Panel (UOP) PLT Interfaces (Cont’d) As for the Ports for P/L Bus, 3 ports are used: - Payload Bus 3 (UOP b1 AD2 or UOP a2 FD4) or - Payload Bus E (UOP in US LAB). Saibo Rack (JPM1A2) Ryutai Rack (JPM1A3) Workstation rack (JPM1 F4) Aft Port Forward UOP for PL Bus E Starboard UOP a2 FD4 UOP b1 AD2 JPM UOP location for PLT US Lab UOP location for PLT PLT’s location after C/O

8. PLT Architecture PLT is set up with the software component for JAXA payload operations. PLT hardware(A31p) and operating system software (Red hat Linux) are the same as the ISS PCS and SLT. PLT Local Bus Interface Software (PLT LBIS) provides C&DH function. PLT Application Software (PLT ASW) provides unique displays for each payload operations. A31p PLT ASW PLT LBIS Red hat Linux

9. Key points during PLT Operations Emphasis : PLT is not planned to use for any critical operations.

10. PLT operational flow • PLT installation in JPM • (common to that of other laptop terminals (PCS, SLT, etc) ). PLT Installation • Power on PLT • Activate PLT LBIS & PLT ASW PLT activation Perform at hands-on training • Command/monitoring telemetry PLT operations for P/Ls control • Deactivate PLT ASW & PLT LBIS • Power off PLT PLT deactivation PLT stowing

11. Acronyms ASW BITCBCBEFC&C MDM C&DHDMSECLSSEPSFPEFGHFGMTICSIPU ISPRJCP JEF JEMJPM Application Software Built In TestClean BenchCell Biology Experiment FacilityCommand & Control Multiplexer/Demultiplexer Command & Data HandlingData Management SystemEnvironment Control and Life Support System Electrical Power SystemFluid Physics Experiment FacilityGradient Heating FurnaceGreenwich Mean TimeInter-orbit Communication SystemImage Processing Unit International Standard Payload RackJEM Control ProcessorJEM Exposed Facility Japanese Experiment ModuleJEM Pressurized Module Local Bus Interface Software Operations Data File Protein Crystallization Research FacilityPortable Computer System Payload Data Handling Unit Payload Laptop Terminal Payload Power Distribution BoxRemote Manipulator SystemSystem Laptop Terminal Solution Crystallization Observation Facility Space Environment Data Acquisition equipment - Attached Payload Thermal Control SystemUtility Outlet PanelVideo Record Unit LBIS ODF PCRFPCS PDH PLT PPDBRMSSLT SCOF SEDA-AP TCSUOPVRU

12. Appendix

13. ISPR Home Page Payload Status Indication Payload On and In Communication Payload On and Loss of Communication Payload Off and Loss of Communication PPDB In Communication PPDB Loss of Communication No PPDB power on/off status displayed.