ETTC'2003 - SEE
ETTC'2003 - SEE ETTC'2003 - SEE
UNIT Unit EMC documents : - grounding & bonding diagrams - frequency plan - Interface control document - EMC test plan - EMC test procedure - EMC test report EMC tests at unit level Launchers user’s handbook S/C EMC test requirements Design rules implementation Validation S/C EMC Specification EMC Control Plan 2 System requirements EMC Assessments : SYSTEM - Grounding and bonding diagrams - Conducted analysis : power bus model, crosscoupling analysis, signal interface analysis - Radiated analysis : self-compatibility and RF compatibility w.r.t launchers - ESD analysis - Harness shielding need analysis - Magnetic analysis Problems identification : - Analysis of specification waivers/deviations at unit level - Solution implementation at System level : shielding… - EMC/ESD design rules implementation Validation EMC tests at System level : Test plan, test procedure, test report
EMC CONTROL ACTIVITY The EMC control activity is shared in two main domains which are detailed in the following paragraphs : design engineering and tests. Control of design rules implementation The control of the application of the design rules is exercised at unit level by an active participation of the EMC engineer to the unit design reviews: examination of the interface circuits, mechanical construction, connector implementation, zero Volt diagrams... At system level this activity consists in participation to the mechanical design for grounding aspects, definition of shielding when necessary, harness routing and implementation, approval of the outer materials... Analyses & Modelling The analyses allow to demonstrate the good behaviour of the satellite prior to the system tests in the case of radiated mode and conducted mode analyses, in order to implement as early as possible the recovery actions, if necessary. The main analyses are : • Assessment of the satellite electromagnetic environment and the associated safety margins : In conducted mode : electrical model of the power bus in conjunction with electrical power supply engineer, cross-coupling analysis, signal interface analysis In radiated mode : launcher compatibility analysis, self-compatibility analysis (at internal and external units level) • Magnetic analysis • Definition of the satellite grounding and bonding diagrams • Analysis of the EMC waivers/deviations • Shielding need analysis • ESD (Surface charging analysis) analysis Tests At system level, the activity consists in defining the tests that are performed, and in co-ordination with AIT and Project teams, the definition of the configuration that are tested and the criteria of success for the susceptibility tests. The EMC tests are performed according to the test documentation : plan, procedure and report. 3
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- Page 336 and 337: Diagramme de l’UCTM Voies analogi
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UNIT<br />
Unit EMC documents :<br />
- grounding & bonding diagrams<br />
- frequency plan<br />
- Interface control document<br />
- EMC test plan<br />
- EMC test procedure<br />
- EMC test report<br />
EMC tests at unit level<br />
Launchers user’s handbook S/C EMC test requirements<br />
Design rules implementation<br />
Validation<br />
S/C EMC Specification<br />
EMC Control Plan<br />
2<br />
System requirements<br />
EMC Assessments :<br />
SYSTEM<br />
- Grounding and bonding diagrams<br />
- Conducted analysis : power bus model, crosscoupling<br />
analysis, signal interface analysis<br />
- Radiated analysis : self-compatibility and RF<br />
compatibility w.r.t launchers<br />
- ESD analysis<br />
- Harness shielding need analysis<br />
- Magnetic analysis<br />
Problems identification :<br />
- Analysis of specification waivers/deviations at unit level<br />
- Solution implementation at System level : shielding…<br />
- EMC/ESD design rules implementation<br />
Validation<br />
EMC tests at System level :<br />
Test plan, test procedure, test report
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