Specifications

EMC-CS-2009.1
© Copyright Ford Motor Company – All Rights Reserved Page 81 of 121
February 11, 2010
Table 21-2: CI 280 ESD Requirements: Powered (all component surfaces)
Functional Performance
Status
Discharge
Sequence
Type of Discharge
Test Voltage
Level
Minimum
Number of
Discharges at
each polarity
Class A Class B Class C
1
Air discharge
C = 330 pF, R = 2k
± 4 kV
3
2
Contact discharge
C = 330 pF, R = 2k
± 4 kV
3
3
Air discharge
C = 330 pF, R = 2k
± 6 kV
3
I
4
Contact discharge
C = 330 pF, R = 2k
± 6 kV
3
5
Air discharge
C = 330 pF, R = 2k
± 8 kV
3
6
Contact discharge
C = 330 pF, R = 2k
± 8 kV
3
7
(1)
Air discharge
C = 330 pF, R = 2k
± 15 kV
3
8
(2 )
Air discharge
C = 150 pF, R = 2k
± 25 kV
3
II
1. This sequence is not applicable to device surfaces that are not accessible to touch during normal operation including the
diagnostic connector.
2. This sequence is applicable only to device surfaces that are directly accessible from outside the vehicle (e.g. keyless entry)
or interior surfaces without touching any portion of the vehicle. (e.g. door lock switches, head lamp switch, cluster).
21.2.1 Handling Tests
The standard test setup for handling tests is illustrated in Figure 21-1. The DUT shall be placed directly on a dissipative mat
and unpowered. When applying discharges to the DUT connector pins, All DUT power return terminals shall be connected
to the ground plane via a grounding strap or wire with a maximum length of 200 mm. If there are multiple power return
terminals which are not internally connected within the DUT, the logic return ground shall be connected to the ground plane
and the remaining power return terminals shall be subjected to ESD pulses similar to all other I/O pins. For those devices
which do not have a ground terminal (i.e. switches with internal LED’s that are low-side sensed and/or latched by a
controller, etc.), attach the low-side output (that would normally be connected to a controller I/O) to the ground plane.
21.2.2 Powered Tests
Figure 21-2 illustrates the standard Setup used when the DUT is powered and functioning. The DUT and any electronic
hardware in the Load Simulator shall be powered from an automotive battery (see paragraph 4.5.4 for requirements).
The DUT and its attached test harness shall be placed on a clean, dielectric support
(ε
r
≤ 1.4) support that is 50mm thick.
The insulator lies directly on the ground plan. The test harness connecting the DUT and Load Simulator shall be 1700 mm
(+300 / -0 mm) in length. The Load Simulator shall be connected directly to the ground plan. If the outer case of the DUT is
metal and can be grounded when installed in the vehicle, the DUT it shall be placed directly on the ground plane. If there is
uncertainly about how the DUT is installed in the vehicle, the DUT shall be tested in both configurations. The ground plane
shall be attached to the negative terminal of the battery and to test facility ground.
As an alternative, the battery may be
place on the floor of the facility.