Engineering Specification
ES-3U5T-1B257-AA
EMC Design Guide for Printed Circuit Boards
Frame 48 of 78
Rev. A
10/01/2002
Printed copies are uncontrolled
4.4. IC Emissions Reference Levels
The IC emissions acceptance levels proposed by Ford differ from those proposed by SAE
J1752/3** document, and are shown in Figure 41. These reference levels apply to
measurements over the frequency range of 150 KHz to 1000 MHz in units of dBµV.
-20
-10
0
10
20
30
40
50
60
0.1
1
10
100
1000
MHz
dBuV
Ref Level 4
Ref Level 3
Ref Level 2
Ref Level 1
Figure 41. IC Radiated Emissions Acceptance Levels
Note: Limits for the TEM Cell are derived from the Magnetic Dipole Moment Reference
Levels in SAE J1752/2 using the equation in J1752/3 Appendix D.
Summary :
-20 -10 0 10 20 30 40 50 60 0.1 1 10 100 1000 MHz dBuV Ref Level 4 Ref Level 3 Ref Level 2 Ref Level 1 Figure 41.
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