ETTC'2003 - SEE

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