ECHNICAL SPECIFICATIONS FOR THE NEW LIP ING NIT

Transcription

1 T E C - T C document title/ titre du document ECHNICAL SPECIFICATIONS FOR THE NEW LIP ING NIT prepared by/préparé par TEC-TCE/TEC-TCP reference/réference TEC-TC/SRU/R&C2005 issue/édition 2 revision/révision 0 date of issue/date d édition 12 Octobre 2005 status/état Document type/type de document Technical Note Distribution/distribution a

2 page ii of iv APPROVAL Title titre Technical specifications for the new LSS Slip Ring Unit issue issue revision revision 3 author auteur date date approved by approuvé by date date CHANGE LOG reason for change /raison du changement issue/issue revision/revision date/date Modification for second ITT October 2005 CHANGE RECORD Issue: ERROR! REFERENCE SOURCE NOT FOUND. Revision: 3 reason for change/raison du changement page(s)/page(s) paragraph(s)/paragraph(s)

3 page iii of iv T A B L E O F C O N T E N T S 1 INTRODUCTION APPLICABLE AND REFERENCE DOCUMENTS ACRONYMS FUNCTIONAL REQUIREMENTS The SRU shall be able to transport electrical power, electrical and optical (optional) data from and to the rotating part of the SB The SRU shall be able to operate in any orientation between horizontal position and vertical position (the SRU vertical axis is coincident with the SB vertical axis) The SRU shall be designed in modular parts The SRU shall be provided with lifting points The SRU shall be accessible for cooling air The SRU shall be able to deliver the full power continuously over all the channels The SRU shall be constituted by: The optional optical module shall be removable and be exchangeable with the Waveguide module MECHANICAL REQUIREMENTS Mechanical interface Rotation speed and operating lifetime Harness and connectors positions MODULARITY AND INTERCHANGE ABILITY The UHF transmission module shall be easily interchangeable and located towards the rotating end of the SRU The VHF transmission module shall be interchangeable and located next to the UHF module The shielded 10MHz transmission channels shall be incorporated over several 10MHz modules The low level transmission module shall consist of several modules The shielded 100kHz transmission channels shall be incorporated over several 100kHz modules ELECTRICAL REQUIREMENTS Low level channels Power 1A channels...6

4 page iv of iv 7.3 Power 5A channels Power 15A channels Shielded 100kHz channels Shielded 10MHz channel VHF channels UHF channels Optical channels (optional) Grounding line ENVIRONMENTAL REQUIREMENTS Transport Storage Operation Cooling air Cleanliness Lubrication PA AND SAFETY REQUIREMENTS PA and safety management QUALITY ASSURANCE SAFETY ASSURANCE SOFTWARE ASSURANCE TEST REQUIREMENTS...18

5 page 1 of 23 1 INTRODUCTION. ESA is operating a Test Centre at ESTEC Noordwijk (NL). It is the unique place in Europe which is geared to perform environmental tests on large spacecrafts at system level. The ESA s Large Space Simulator (LSS) which provides close simulation of in-orbit environmental conditions for the spacecraft thermal balance testing, is equipped with a Motion Simulator which provides orbit simulation with respect to the solar radiation. During the last 17 years of operation, it has been noticed that the needs of transmission from the satellite under test through the Motion Simulator Slip Ring Unit (SRU) have evolved. In addition, the technology of slip rings has improved. The objective is to design, to manufacture, to test and to install in the LSS a new SRU which will transport the signals and the power between the satellite rotating on the Motion Simulator (MS) to the static part of the space simulator and test cabinets. This SRU will consist of low level, high level, RF and optical channels. 2 APPLICABLE AND REFERENCE DOCUMENTS. AD 01 AD 02 AD 03 AD 04 AD 06 connections. AD 07 AD 08 E10603, SRU envelope drawing, E14109, SRU interface points, Waveguide module drawing. ESCC-Q-70-26A Crimping of high-reliability electrical connections. ESCC-Q-70-08A The manual soldering of high-reliability electrical ECSS-Q-70-01A Cleanliness and Contamination Control ESCC-Q-30-02A Failure modes, effect and criticality analysis. RD 01 Components. ESCC-Q-70-60A Electrical, Electronic and Electromechanical (EEE) 3 ACRONYMS. AWG American Wire Gauge CCW Counter Clockwise CW Clockwise DC Direct Current DPTS Data and Power Transmission System EMF Electro Motive Force ESA European Space Agency

6 page 2 of 23 ESTEC LSS MS NC SB SRU TBC VHF UHF European Space and Technology Centre Large Space Simulator Motion Simulator Not Connected Spin Box Slip Ring Unit To Be Confirmed Very High Frequency Ultra High Frequency 4 FUNCTIONAL REQUIREMENTS. 4.1 The SRU shall be able to transport electrical power, electrical and optical (optional) data from and to the rotating part of the SB. 4.2 The SRU shall be able to operate in any orientation between horizontal position and vertical position (the SRU vertical axis is coincident with the SB vertical axis). 4.3 The SRU shall be designed in modular parts. 4.4 The SRU shall be provided with lifting points. 4.5 The SRU shall be accessible for cooling air. 4.6 The SRU shall be able to deliver the full power continuously over all the channels. 4.7 The SRU shall be constituted by: Low level channels, 1A power channels, 5A power channels, 15A power channels,

7 page 3 of 23 Shielded 100kHz channels, Shielded 10MHz channels, VHF channel module, UHF channel module, A Waveguide module (Re-use of the existing, ESTEC provided), Optical channel module (Optional), A Grounding channel. 4.8 The optional optical module shall be removable and be exchangeable with the Waveguide module. 5 MECHANICAL REQUIREMENTS. 5.1 Mechanical interface. [5.1.1] The mechanical interface points shall be compatible with the existing SB shaft (AD 01, AD 02). [5.1.2] The SRU attachment shall be designed to allow misalignment between the SB axis and the SRU axis due to mounting tolerances, mechanical and thermal effects on SB and SRU. [5.1.3] The SRU shall have: - A flanged extension to the SB main shaft (AD 01) for the SRU rotary part interface, - A flanged support to the SB housing (AD 01) for the SRU static part interface. On this interface, the SRU shall have a retainer providing cable support. [5.1.4] Alignment aids, locking systems or key ways shall be implemented where parts need to be mounted in a defined orientation. [5.1.5] The SRU shall accommodate the mounting of the existing waveguide module (AD 03). [5.1.6] For handling and installation into the Spin Box, removable hoisting points shall be provided. A dedicated lifting device shall be provided if needed.

8 page 4 of Rotation speed and operating lifetime. [5.2.1] The torque required to start rotation over the whole speed range shall not exceed 40 Nm. [5.2.2] The rotation torque shall not increase by more than 20% within revolutions. [5.2.3] The SRU shall be operated to any rotation speed ranging from 0 rpm (rest) up to 10 rpm (max). [5.2.4] The nominal of revolutions between maintenance activities shall be greater than The contractor shall envisage a method to asses the need for maintenance (maintenance indicator). 5.3 Harness and connectors positions. [5.3.1] Each cable shall be individually clamped on both side of the SRU. [5.3.2] The SRU shall be equipped with cables and connectors to interface with the Data and Power Transmission System (DPTS). The connectors on the stationary side of the SRU must be connected to the plug plate, while the connectors on the rotary side of the SRU must be connected on the SB dome plug plate. [5.3.3] Proper identification by marking of lines and connectors shall be provided. [5.3.4] The length of electrical harness from SRU to end connector (excluding connector length) shall be 1200mm on fixed side and 500mm on the rotating side except VHF, UHF and optical channels to be mounted directly isolated on SRU body. 6 MODULARITY AND INTERCHANGE ABILITY. Modular design and standardisation of parts shall be applied wherever possible and meaningful with respect to economy of production, accessibility, maintenance and replacement costs and efforts. Individual blocks shall be less than 30% of the complete SRU. The Contractor shall aim for interchange ability as listed hereafter:

9 6.1 The UHF transmission module shall be easily interchangeable and located towards the rotating end of the SRU. page 5 of The VHF transmission module shall be interchangeable and located next to the UHF module. 6.3 The shielded 10MHz transmission channels shall be incorporated over several 10MHz modules. 6.4 The low level transmission module shall consist of several modules. 6.5 The shielded 100kHz transmission channels shall be incorporated over several 100kHz modules. 7 ELECTRICAL REQUIREMENTS. The contractor shall use Teflon isolated cables. Deviation from the baseline must be justified and accepted by ESTEC. 7.1 Low level channels. These channels are used for low level signals. [7.1.1] The total of channels shall be 144 (8 times 18 pairs) + 8 shields (296 lines) distributed over 8 connectors (Appendix A). [7.1.2.] The connectors shall be Cannon DCMA 37P-NMB, gold plated with shell DC and lock post (two per connector), contacts shall be according to ESCC 3401/008. [7.1.3.] The connector pin allocation shall be as of Appendix A. [7.1.4] The wire used shall be AWG 28 annealed silver-plated copper, formation stranded, twisted pair.

10 page 6 of 23 [7.1.5] A copper braid per connector shall cover 18 twisted pairs (one connector) as an overall screen. [7.1.6] An overall insulation and protection layer shall be installed around every connector screen (sleeve). [7.1.7] The maximum voltage shall be 50V DC. [7.1.8] The maximum continuous current shall be 200mA. [7.1.9] The wire resistance shall be < 1 ohm (both polarities). [7.1.10] The isolation between a connector contact and SRU ground (housing) shall be > 100Mohm at 100V DC (both polarities). [7.1.11] The isolation between connector shields and the SRU ground (housing) shall be >100Mohms at 100V DC (both polarities). [7.1.12] The voltage far end cross talk between lines within one connector shall be <-40dB (measured with the line terminated on Zo, 2 times Zo and 0.5 times Zo) at max frequency of 1MHz. [7.1.13] The voltage far end cross talk between lines of an adjacent connector shall be <- 60dB (measured with the line terminated on Zo, 2 times Zo and 0.5 times Zo) at max frequency of 1MHz. [7.1.14] The channel noise (2way) shall be < 40 microvolt/ma. [7.1.15] The generated emf at ambient temperature of 23 degc shall not exceed +/- 4 microvolt. [7.1.16] The emf difference generated between any 2 channels shall remain smaller than 10 microvolt for temperature changes up to 10degC per minute of SRU environment (Operating temperature range). 7.2 Power 1A channels. These channels are used for 1A power transmissions. [7.2.1] The total of channels shall be as a minimum 144 (8 times 18 pairs) + 8 shields (296 lines) distributed over 8 connectors. Target shall be 180 channels (10 times 18 pairs) + 10 shields (370 lines) distributed over 10 connectors.

11 page 7 of 23 [7.2.2] The connectors shall be Deutsch DS SY-059 with shell. [7.2.3] The connector pin allocation shall be as of Appendix A. [7.2.4] The wire used shall be AWG 20 annealed silver-plated copper, formation stranded, twisted pair. [7.2.5] A copper braid per connector shall cover 18 twisted pairs (one connector) as an overall screen. [7.2.6] An overall insulation and protection layer shall be installed around every connector screen (sleeve). [7.2.7] The maximum operating voltage shall be 200V DC. [7.2.8] The maximum continuous operating current shall be 1A. [7.2.9] No current derating shall apply for multiple channels operating under these maximum conditions. [7.2.10] The channel resistance (2 way) shall be < 0.3 ohm (both polarities). [7.2.11] The isolation between a connector contact and SRU ground (housing) shall be > 100Mohm at 300V (both polarities). [7.2.12] The isolation between connector shields and the SRU ground (housing) shall be > 100Mohms at 300V DC (both polarities). [7.2.13] The channel noise (2way) shall be < 20 microvolt/ma. 7.3 Power 5A channels. These channels are used for 5A power transmissions. [7.3.1] The total of channels shall be as a minimum 33 (3 times 11 pairs) + 3 single lines + 3 shields distributed over 3 connectors. Target shall be 55 channels (5 times 11 pairs) + 5 single lines + 5 shields (120 lines) distributed over 5 connectors (Appendix A). [7.3.2] The connectors shall be Deutsch DS SY-059 with shell. [7.3.3] The connector pin allocation shall be as of Appendix A.

12 page 8 of 23 [7.3.4] The wire used shall be AWG 16 annealed silver-plated copper, formation stranded, twisted pair. [7.3.5] A copper braid per connector shall cover 11 twisted pairs (one connector) as an overall screen. [7.3.6] An overall insulation and protection layer shall be installed around every connector screen (sleeve). [7.3.7] The maximum operating voltage shall be 200V DC. [7.3.8] The maximum continuous operating current shall be 5A. [7.3.9] No current derating shall apply for multiple channels operating under these maximum conditions. [7.3.10] The channel resistance (2 way) shall be < 0.15 ohm (both polarities). [7.3.11] The isolation between a connector contact and SRU ground (housing) shall be > 100Mohm at 300V (both polarities). [7.3.12] The isolation between connector shields and the SRU ground (housing) shall be > 100Mohms at 300V DC (both polarities). [7.3.13] The channel noise (2way) shall be < 20 microvolt/ma with an unbalance of max 20%. 7.4 Power 15A channels. These channels are used for 15A power transmissions. [7.4.1] The total of channels shall be as a minimum 32 (8 times 4 pairs) (64 lines) distributed over 8 connectors (appendix A) Target shall be 48 (8 times 6 pairs) (96 lines) distributed over 8 connectors (Appendix A). [7.4.2] The connectors shall be Deutsch DS S-059 with shell. [7.4.3] The connector pin allocation shall be as of Appendix A. [7.4.4] The wire used shall be AWG 12, annealed silver-plated copper, formation stranded, twisted pair. [7.4.5] An overall insulation and protection layer shall be installed around every connector screen (sleeve).

13 page 9 of 23 [7.4.6] The maximum operating voltage shall be 200V DC. [7.4.7] The maximum continuous operating current shall be 15A. [7.4.8] No derating shall apply for multiple channels operating under these maximum conditions. [7.4.9] The channel resistance (2 way) shall be < 0.06 ohm (both polarities). [7.4.10] The isolation between a connector contact and SRU ground (housing) shall be > 100Mohm at 300V (both polarities). [7.4.11] The isolation between connector shields and the SRU ground (housing) shall be > 100Mohms at 300V DC (both polarities). [7.4.12] The channel noise (2way) shall be < 20 microvolt/ma. 7.5 Shielded 100kHz channels. These channels are used for low level sensitive signal transmissions. [7.5.1] The total of channels shall be as a minimum 60 (5 times 12 pairs) + 10 shields (180 lines including shields) distributed over 5 connectors Appendix A) Target shall be 72 (6 times 12 pairs) + 12 shields (216 lines including shields) distributed over 6 connectors (Appendix A). [7.5.2] The connectors shall be Deutsch DS07-37-S-059 with shell. [7.5.3] The connector pin allocation shall be as of Appendix A. [7.5.4] The wire used shall be AWG 28 annealed silver-plated copper, formation stranded, shielded twisted pair. [7.5.5] Each twisted pair shall be individually shielded and the shield shall be passed through an individual slip ring. [7.5.6] Each twisted pair shall have an insulation and protection layer installed. [7.5.7] An overall insulation and protection layer shall be installed. [7.5.8] The maximum operating voltage shall be 100V DC. [7.5.9] The maximum operating current shall be 200mA.

14 page 10 of 23 [7.5.10] The channel resistance (2 way) shall be < 1 ohm (both polarities). [7.5.11] The isolation between channels and SRU ground (housing) shall be > 100Mohm at 200V (both polarities). [7.5.12] The isolation between the shields of the channels shall be > 100Mohm at 200V (both polarities). [7.5.13] The isolation between shields of the channels and SRU ground (housing) shall be >100Mohms at 200V DC (both polarities). [7.5.14] The channel noise (2way) shall be < 20 microvolt/ma. [7.5.15] The voltage far end cross talk between lines within one connector shall be <- 80dB (measured with the line terminated on Zo, 2 times Zo and 0.5 times Zo) at max frequency of 100kHz. [7.5.16] The insertion loss shall be > - 0.3dB over the frequency range DC-100kHz. 7.6 Shielded 10MHz channel. These channels are used for high frequency low level transmissions. [7.6.1] The total of channels shall be as a minimum 24 (60 lines including shields) distributed over 3 connectors (Appendix A), Target shall be 32 (4 times 8 pair) + 8 shields (96 lines including shields) distributed over 4 connectors (Appendix A). [7.6.2] The connectors shall be Deutsch DS 07-37SB with shell. [7.6.3] The connector pin allocation shall be as of Appendix A. [7.6.4] The wire used shall be FILECA F2703/16, 120 ohm shielded twisted pair or equivalent. [7.6.5] An overall insulation and protection layer shall be installed. [7.6.6] The maximum operating voltage shall be 50V DC. [7.6.7] The maximum operating current shall be 200mA. [7.6.8] The channel resistance (2 way) shall be < 2 ohm (both polarities). [7.6.9] The characteristic impedance of the channel shall be 120ohm balanced.

15 page 11 of 23 [7.6.10] The isolation between channels and SRU ground (housing) shall be > 100Mohm at 200V (both polarities). [7.6.11] The isolation between the shields of the channels shall be > 100Mohm at 200V (both polarities). [7.6.12] The isolation between shields of the channels and SRU ground (housing) shall be >100Mohms at 200V DC (both polarities). [7.6.13] The channel noise (2way) shall be < 20 microvolt/ma. [7.6.14] The voltage far end cross talk between lines within one connector shall be <- 60dB (measured with the line terminated on Zo, 2 times Zo and 0.5 times Zo) at max frequency of 10MHz. [7.6.15] The insertion loss shall be > - 0.3dB over the frequency range DC - 10MHz. 7.7 VHF channels. These channels are used for high frequency coaxial transmissions. [7.7.1] The total of channels shall be 8. [7.7.2] The connectors shall be BNC female type. [7.7.3] The cable used shall be 50ohm RG178 BU coaxial or equivalent. [7.7.4] The isolation between cable and SRU ground shall be > 100Mohm at 300V DC (both polarities). [7.7.5] The isolation between cable shield and SRU ground shall be > 100Mohm at 300V DC (both polarities). [7.7.6] The characteristic impedance of the channel shall be 50ohm. [7.7.7] The return loss shall be < - 13dB over the frequency range DC - 250MHz. [7.7.8] The insertion loss shall be > - 2dB over the frequency range DC - 250MHz. [7.7.9] Resistance for core shall be < 1ohm at DC. [7.7.10] Resistance for external conductor (screen) shall be < 0.2ohm at DC.

16 page 12 of 23 [7.7.11] Cross talk between channels terminated on 50ohm shall be < -50dB. (measured with the line terminated on Zo, 10 times Zo and 0.1 times Zo) at max frequency of 250MHz. [7.7.12] The maximum average operating power shall not exceed 10W. 7.8 UHF channels. These channels are used for microwave coaxial transmissions. [7.8.1] The total of channels shall be 2 as a minimum. Target shall be 8 channels. [7.8.2] The connectors shall be SMA female type. [7.8.3] The cable used shall be 50ohm UT 085 or UT141 coaxial or equivalent. [7.8.4] The isolation between cable and SRU ground shall be > 100Mohm at 300V DC (both polarities). [7.8.5] The isolation between cable shield and SRU ground shall be > 100Mohm at 300V DC (both polarities). [7.8.6] The characteristic impedance of the channel shall be 50ohm. [7.8.7] The cross talk between channels terminated on 50ohm shall be < -50dB. (measured with the line terminated on Zo, open circuit and short circuit) at max frequency of 18GHz. UHF 1: [7.8.8] The return loss shall be < - 13dB over the frequency range 1MHz - 18GHz. [7.8.9] The insertion loss shall be > - 1.5dB over the frequency range 1 MHZ - 18 GHz. [7.8.10] The maximum average operating power shall not exceed 20W. s UHF 2 8: [7.8.11] The return loss shall be < - 9dB over the frequency range 1MHz - 12GHz. [7.8.12] The insertion loss shall be > - 3dB over the frequency range 1MHz - 12 GHz. [7.8.13] The maximum average operating power shall not exceed 10W. 7.9 Optical channels (optional). These channels will be used for high-speed data transmissions.

17 page 13 of 23 [7.9.1] The total of channels shall be 4. [7.9.2] The fibre used shall be multimode 62.5/125 with protective jacket. [7.9.3] The insertion loss shall be > - 6dB at 850nm. [7.9.4] The variation of the insertion loss during rotation of the SRU shall be < 1.5dB at 850 nm. [7.9.5] The cross talk between channels shall be < -50dB. [7.9.6] The connectors shall be ST type. [7.9.7] This optical module shall be easily removable Grounding line This line is used for connecting the spacecraft under test to the facility clean earth. [7.10.1] There shall be one grounding line. [7.10.2] The maximum operating voltage shall be 50V DC. [7.10.3] The maximum operating current shall be 30A. [7.10.4] The line resistance shall be < 0.05 ohm (both polarities). [7.10.5] The isolation between the line and to SRU ground shall be > 100Mohm at 100V (both polarities). [7.10.6] The line noise shall be < 20 microvolt/ma. [7.10.7] On both ends the cable shall be terminated with ring terminal capable of accommodating a M10 screw. 8 ENVIRONMENTAL REQUIREMENTS. 8.1 Transport. [8.1.1] Protection for transport and handling shall be provided.

18 page 14 of 23 [8.1.2] The provided protection shall enable the handling by conventional commercial transport. 8.2 Storage. [8.2.1] Storage of the SRU shall be possible for long durations up to four years at atmospheric pressure in clean room environment class [8.2.2] Inactivity periods up to one year between operations have to be foreseen. It shall be possible to keep the SRU installed the Motion System during this period without degradation of the unit performance. 8.3 Operation. [8.3.1] The operating temperature shall remain between 15 to 70degC. It is however advisable to keep the operating temperature close to ambient. [8.3.2] Since the Spin Box internal temperature might change during operation, the SRU shall be thermally decoupled from the SB. [8.3.3] The contractor shall demonstrate that the operating temperature range is achievable under the condition specified in section 8.4. [8.3.4] Temperature measurement points shall be available for test purposes. 8.4 Cooling air. A cooling airflow at nominally 500l/min with a temperature 20 to 25 degc at atmospheric pressure will be supplied to the SRU. The RH of the cooling air will be in the range 30% to 50%. The cleanliness of the cooling air is according to Class Cleanliness. [8.5.1] The design and the materials used for the manufacturing of the SRU shall be compatible with a clean room environment class (ECSS-Q-70-01A). 8.6 Lubrication. [8.6.1] The design shall be so that no lubrication fluid shall be introduced in any part of the SRU.

19 page 15 of 23 9 PA AND SAFETY REQUIREMENTS. 9.1 PA and safety management. [9.1.1] The contractor shall define and document the responsibility, the authority and the interrelation of personnel who manage, perform and verify the work affecting PA & safety. [9.1.2] These personnel shall include a PA manager for the project who has the required authority to achieve an effective implementation of PA disciplines, including safety, as described in the PA & safety plan. [9.1.3] Organization links and resources shall permit that the PA manager has: Unimpeded access to higher management through the contractor s PA executive (or equivalent), as necessary to fulfil his duties, Access to contractor organizational groups and resources in the project, Direct access to his counterparts in the organization of ESA and of subcontractors. 9.2 QUALITY ASSURANCE. [9.2.1] QA requirements for Design. Contractor s PA manager shall participate in the design review to ensure that PA & Safety requirements are fulfilled. [9.2.2] Verification. [ ] The fulfillment of all applicable ESA requirements shall be verified. [ ] Requirements shall be verified by using one or more of the following methods: Analysis, Inspection, Test, Review of Design. [9.2.3] Design Compliance Matrix. The compliance of the design to all applicable ESA requirements shall be documented in a Design Compliance Matrix. The Design Compliance Matrix shall include for each requirement at least the following elements: Requirement identification as in ESA documents,

20 page 16 of 23 Requirement description, Evidence of how the design meets the requirement, Status of compliance (Compliant / Non-Compliant). [9.2.4] Verification Compliance Matrix. The verification of all applicable ESA requirements shall be documented in a Verification Matrix. The Verification Matrix shall include for each requirement at least the following elements: Requirement identification as in ESA documents, Requirement description, Methods of compliance used to verify the requirement (test, inspection, review of design, analysis), Level at which the verification is performed (for example: equipment level at Contractors premises, during sub-system integration at ESTEC, at sub-system level). When applicable, it shall be indicated if the verification of the requirement is foreseen at software configuration item level, Reference to the document in which the verification activity is planned (for example, acceptance tests plan, specific test procedure, etc.), Reference to the evidence of compliance (for example test reports, records of review, etc.), Status of compliance (Compliant / Non-Compliant). [9.2.5] Tests. The Contractor shall document all the tests performed in the Manufacturing and Inspection Plan. [9.2.6] Metrology and Calibration. [ ] The Contractor shall identify in the Manufacturing and Inspection Plan all the measurements and calibrations to be performed during the assembly and integration process, the accuracy required and shall select the appropriate equipment. [9.2.7] QA Requirements for Procurement. [ ] The Contractor shall control the procurement activity to ensure that all items and services procured conform to business agreement requirements. The control of procurement activity includes selection of procurement sources, control of purchase documents, surveillance of suppliers and control of incoming items. [ ] The Contractor shall document the control of the procurement activity in a procedure to be submitted to ESA for approval.

21 page 17 of 23 [9.2.8] Non-conformance reporting and control. [ ] The Contractor shall establish and maintain a non-conformance control system for the project that will be agreed with the Agency. [ ] The Contractor shall document the non-conformance control system in a procedure to be submitted to ESA for approval. [ ] The non-conformance control system shall include the following: the Contractor will notify all major non-conformances to ESA within 24 hours after their classification. [9.2.9] Reliability analysis: Failure Modes Effects and Criticality Analysis (FMECA) [ ] The Contractor shall perform and document a FMECA. All potential failure modes shall be identified and classified according to the severity of the consequences, in accordance with AD08. [ ] The analyses shall determine for every functional block or component at least the followings: The possible modes of failure, The eventual presence of single point failures, The requirements that are not achieved due to failure, The specific needs for maintenance. [ ] The reliability of the SRU shall also be demonstrated. [9.2.10] Maintainability, The maintainability shall be taken into consideration throughout the design by: Test, Analyses, Inspection and/or Review of design (mechanical, electrical, etc.) ensuring that the design complies with the maintainability quantitative requirements and other design criteria, Results of hazard analysis identifying hazards induced by maintenance activities and determination of safety procedures, precautions and protective devices to safeguard personnel and materials during maintenance actions. 9.3 SAFETY ASSURANCE. [9.3.1] Hazard analysis. The analysis shall identify any potentially hazardous items (e.g. chemical, toxicity, high voltage, etc.) and operations, including operations to be performed for maintenance, and shall address sensitivity to human error. Use shall be made of the results of the FMECA. All possible safety hazards shall be included in the operation manual.

22 page 18 of 23 [9.3.2] Safety regulations and standards. The SRU device shall be marked with CE Marking according to the European Machinery Directive and EMC compatibility (TBD). [9.3.3] For structural parts and lifting points, a safety factor of 2 shall apply against permanent deformation and 3 shall apply against breaking. 9.4 SOFTWARE ASSURANCE. [9.4.1] Purchased software. The purchased software and standard hardware shall be validated, by use or by application or by certification authorities. [9.4.2] The software media delivered to the customer shall be identified and marked with a unique identification code. 10 TEST REQUIREMENTS. [10.1] For electrical requirements, the measurement shall be performed at maximum and minimum rotations speeds, rotating CW and CCW. [10.2] Verification by test of the SRU thermal behaviour shall be performed at maximum operating current of all channels simultaneously. [10.3] VHF and UHF channels shall be tested in transmission using Time Domain Reflectometry and demonstrated to have characteristic impedance deviations < 15%.

23 page 19 of 23 APPENDIX A : CONNECTOR PIN ALLOCATION Appendix A1: Low level channels pin allocation. Connector Contact Shield Shield Shield Shield Shield Shield Shield Shield

24 page 20 of 23 Appendix A2: Power transmission 1A channels pin allocation. Connector (*) 10(*) Contact Shield Shield Shield Shield Shield Shield Shield Shield Shield Shield (*) Target only.

25 page 21 of 23 Appendix A3: Power transmission 5A channels pin allocation. Connector (*) 5(*) Contact Single line 1 Single line 2 Single line 3 Single line 4 Single line 5 24 Shield Shield Shield Shield Shield (*) Target only. Appendix A4: Power transmission 15A channels pin allocation. Connector Contact 1 2 (*) (*) (*) (Target only).

26 page 22 of 23 Appendix A5: Shielded transmission 100kHz channels pin allocation. Connector (*) Contact 1 NC NC NC NC NC NC shield 19 shield 31 shield 43 shield 55 shield 67 shield 9 8 shield 20 shield 32 shield 44 shield 56 shield 68 shield 10 2 shield 14 shield 26 shield 38 shield 50 shield 62 shield 11 9 shield 21 shield 33 shield 45 shield 57 shield 69 shield shield 22 shield 34 shield 46 shield 58 shield 70 shield shield 23 shield 35 shield 47 shield 59 shield 71 shield 14 3 shield 15 shield 27 shield 39 shield 51 shield 63 shield shield 24 shield 36 shield 48 shield 60 shield 72 shield 16 4 shield 16 shield 28 shield 40 shield 52 shield 64 shield 17 5 shield 17 shield 29 shield 41 shield 53 shield 65 shield 18 1 shield 13 shield 25 shield 37 shield 49 shield 61 shield 19 6 shield 18 shield 30 shield 42 shield 54 shield 66 shield (*) Target only.

27 page 23 of 23 Appendix A6: Shielded transmission 10MHz channels pin allocation. Connector (*) Contact 1 1 shield 9 shield 17 shield 25 shield shield 10 shield 18 shield 26 shield NC NC NC NC 8 NC NC NC NC 9 3 shield 11 shield 19 shield 27 shield 10 NC NC NC NC 11 4 shield 12 shield 20 shield 28 shield 12 NC NC NC NC 13 5 shield 13 shield 21 shield 29 shield 14 NC NC NC NC 15 6 shield 14 shield 22 shield 30 shield 16 NC NC NC NC 17 7 shield 15 shield 23 shield 31 shield 18 NC NC NC NC 19 8 shield 16 shield 24 shield 32 shield 20 NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC NC (*) Target only.