Specifications

EMC-CS-2009.1
© Copyright Ford Motor Company – All Rights Reserved Page 9 of 121
February 11, 2010
Disturbance. Any electrical transient or electromagnetic phenomenon that may affect the proper operation of an electrical or
electronic device (see stimulus).
DBCI. Differential Mode Bulk Current Injection.
DUT. Device(s) Under Test. Any electrical or electronic component, module, motor, filter, etc being tested.
DV. Design Verification (components not constructed from production tooling).
E/E. Electrical and/or Electronic.
EMC. Electromagnetic Compatibility
EMI. Electromagnetic Interference
Effect. A detectable change in DUT performance due to an applied stimulus.
EM. Electronically Controlled Motor.
ESA. Electronic Sub-Assembly
ESD. Electrostatic discharge.
ESD - Air Discharge. Test method whereby the electrode of the test generator is brought near the DUT and discharge is
accomplished through an arc to the DUT.
ESD - Contact Discharge. Test method whereby the electrode of the test generator is brought into contact with the DUT
and the discharge is triggered by the discharge switch located on the generator.
Fail-Safe Mode. A predictable operating mode intended to minimize adverse effects by restricting or shutting down
operation when a significant stimulus has made operation unreliable. Operation shall recover after the stimulus is removed
without permanent loss of function or corruption of stored data or diagnostic information.
FMC. Ford Motor Company including all affiliate brands
FMC D&R Group. The FMC engineering activity responsible for design or the component or subsystem
FMC EMC Department. The Ford Motor Company EMC department associated with a specific brand.
FPDS. Ford Product Development System
Function. The intended operation of an electrical or electronic module for a specific purpose. The module can provide
many different functions, which are, defined (functional group and acceptable performance) by the module specification.
Functional Importance Classifications: Defines the importance of E/E component/subsystem functions with respect to safe
vehicle operation.
• Class A: Any function that provides a convenience.
• Class B: Any function that enhances, but is not essential to the operation and/or control of the vehicle.
• Class C: Any function that controls or affects the essential operation of the vehicle or could confuse the driver or
other road users.
Function Performance Status. The performance of DUT functions, when subjected to a disturbance, is described by three
performance status levels:
• Status I: The function shall operate as designed (or meet specified limits) during and after exposure to a disturbance.
• Status II: The function may deviate from designed performance, to a specified level, during exposure to a disturbance
but shall not affect safe operation of the vehicle, safety of its occupants and does not adversely affect customer
satisfaction. The function may revert to a fail-safe mode of operation, but shall return to normal operation following
removal of the disturbance either automatically or in line with the function's fail-safe recovery strategy. No effect on
permanent or temporary memory is allowed. Status II performance, where applicable, is only permissible if the
deviation in performance does not affect other related functions requiring Status I performance.
• Status III: The function may deviate from designed performance during exposure to a disturbance but shall not affect
safe operation of the vehicle or safety of its occupants. Operator action may be required to return the function to
normal after the disturbance is removed (e.g. cycle ignition key, replace fuse). No effect on permanent type memory is
allowed. Status III performance, where applicable, is only permissible if the deviation in performance does not affect
other related functions requiring Status I performance.
• Status IV: The device shall not sustain damage, changes in I/O parametric values (resistance, capacitance, leakage
current etc.) or a permanent reduction in functionality.