Specifications

EMC-CS-2009.1

February 11, 2010

Figure 21-3: CI 280 Test setup ( Communication Bus Connection Requirements )

1 2

Key

1. DUT 4. Diagnositic Wiring (e.g. CAN) wiring shown

is twisted and same length as DUT harness.

Load Simulator 5. Other DUT circuits

Diagnositic Connector (e.g. OBDII)

21.3.1 Handling (Unpowered) Tests

Prior to testing, the DUT shall be configured as delineated in section 21.2.

Apply ±4 kV contact discharge (sequence #1) to all DUT connector pins (discharge sequence 2 and 3 are not applied).

Prior to commencement of testing verify that the DUT power return terminals are connected to the ground plane per

Section 21.2.1). If connector body is non-metallic and the connector pins are recessed, an extension contact (< 25

mm) shall be installed to facilitate testing of the individual pins.

If the connector body is metallic with recessed pins,

extension contacts shall not be installed.

Apply contact and air discharges according to the sequence shown in Table 21-1 on all exposed shafts, buttons,

switches, and/or surfaces (including along all air gaps that exist between buttons, faceplates, etc.) that are a result of

the design of the product. All discharge points shall be specified in the EMC test plan.

21.3.2 Powered Tests

All tests shall be performed while the DUT is in operation using the voltage levels and ESD network values listed in Table

21-2. Testing shall be limited to one DUT operating mode (specified in EMC test plan). Monitoring instrumentation and

methods to determine DUT performance during testing shall be documented in the test report. Monitoring of particular DUT

functions must not disturb its operation or couple in any of the ESD simulator discharge energy that the DUT would not

normally experience. Also, steps should be taken to preclude potential damage of monitoring equipment during testing.

Verify that the DUT is fully operational. If the DUT contains network functions (e.g. J1850, CAN, LIN), normal

expected network traffic shall be simulated to represent that typical in the vehicle application. Details regarding

specific network traffic messages, bus utilization etc, shall be documented in the EMC test plan.

Perform contact and air discharges per Table 21-2 (sequence 1 through 6) to each exposed shaft, button, switch

and/or surface of the DUT including air gaps that exist between buttons, faceplates, etc. that are a result of the

design of the product. All discharge points shall be documented in the EMC test plan. For each of the required

discharge voltages, three (3) discharges of positive and three (3) discharges of negative polarity shall be applied at

each of the specified discharge points.

If the DUT has surfaces located in the passenger compartment or trunk that may be touched, repeat step b) with

discharge sequence 7 only.