Specifications

EMC-CS-2009.1
© Copyright Ford Motor Company – All Rights Reserved Page 110 of 121
February 11, 2010
Configuration 3
DUT power circuit "A" shares same circuit as inductive load when SW2 is closed. The DUT and inductive load are
switched via ignition switch or ignition relay. Transient pulses A1, A2 and E will be present at "A" if SW2 remains
closed and IGN SW opens. Transient pulse C will be present at "A" if IGN SW remains closed and SW2 opens or
bounces. Pulse C and G (load dump) will be present at "A" when IGN SW is closed.
Pulse Application
+
_
SW2
L
W2
BATT
IGN SW
L
W1
L
W1
, L
W2
<< L
R
L
Inductive
Load
DUTDUT
A
Z
3
Z
3
Z
2
Z
2
Z
1
Z
1
Apply transient pulses A1, A2-1,
A2-2
, C-1, C-2, E, G1, G2 to
DUT power connection "A"
Configuration 4
DUT power circuit "A" is directly connected to battery. DUT also has an input or secondary power circuit "B" that
is connected to ignition switched circuits. Transient pulse C will be present at "A" if SW2 is closed and IGN SW
opens or bounces. Transient pulses A1, A2 and E will be present at "B" if SW2 is closed and IGN SW opens. Pulse
C will be present at "B" if IGN SW is closed and SW2 opens or bounces. Pulse C and G (load dump) will be
present at "A" and "B" when IGN SW is closed.
Pulse Application
+
_
SW2
L
W2
BATT
IGN SW
L
W1
L
W1
, L
W2
<< L
R
L
Inductive
Load
Z
3
Z
3
Z
2
Z
2
Z
1
Z
1
DUTDUT
A
B
Apply transient pulses A1, A2-1,
A2-2
, C-1, C2 and E to "B"
Apply transient pulse C-1, C-2,
G1 or G2 to "A" and "B"
simultaneously.