Specifications
EMC-CS-2009.1
© Copyright Ford Motor Company – All Rights Reserved     Page 53 of 121 
February 11, 2010 
14.0  Coupled Immunity: RI 150 
These requirements are related to component immunity from wire-to-wire coupling of unintended continuous disturbances.  
These disturbances originate from high current PWM sources and the vehicle’s charging and ignition system. These 
requirements are applicable to the following component categories: 
Electronic Modules: A, AS, AM, AX, AY
Electric Motors: EM
14.1  Requirements 
The device shall operate without deviation (Status I) when exposed to sinusoidal electromagnetic disturbances delineated in 
Figure 14-1. 
Figure  14-1: RI 150 Coupled Immunity Requirements 
0
1
2
3
4
5
6
7
1 10 100
kHz
I
P-P
 (ampers)
Frequency (kHz)  Stress Level ( I
P-P 
) 
1 – 10  6 
10 – 100 
⎟
⎠
⎞
⎜
⎝
⎛
−
10
log4.56
f
*
* f = frequency in kHz 










