Specifications

EMC-CS-2009.1

February 11, 2010

11.4.1 Test Verification and Test Setup

Verification of component performance shall be in accordance with the BCI (substitution method) per (ISO 11452-4) except

where delineated in this specification.

• The DUT shall be powered from an automotive battery (see paragraph 4.5.4 for requirements). The battery negative

terminal shall be connected to the ground plane. The battery may be located on, or under the test bench. The standard

test Setup shown in Annex G shall be used for the Load Simulator, battery and Artificial Networks.

• The test bench shall include a sufficiently large ground plane, such that the test harness lies in a straight line. Spacing

between the edge of the ground plane and the test harness, DUT, Load Simulator etc shall conform to ISO 11452-4.

• The distance between the test Setup and all other conductive structures (such as the walls of the shielded enclosure)

with the exception of the ground plane shall be ≥ 500 mm.

• In the frequency range from 1 MHz - 30 MHz all power return (i.e. ground) wires of the DUT wiring harness shall be

terminated directly to the ground plane (DBCI) as illustrated in Figure 11-2a. The length of the wiring shall be 200 ±

50 mm. No power return wiring shall be routed around the BCI injection probe. These requirements may be waived

if the power and power return wiring are twisted (must be specified in the product engineering specification) but must

be documented in the EMC test plan.

• In the frequency range 30 MHz.- 400 MHz all wires of the DUT wiring harness shall be routed inside of the injection

probe (CBCI) as illustrated in Figure 11-2b.

• If the DUT has multiple connectors, testing shall be repeated (1 – 400 MHz) with the injection probe placed around

the individual harness associated with each individual DUT connector. Circuits contained in each harness shall be

documented in the EMC test plan.

• The injection probe shall be insulated from the ground plane.

• An optional current monitoring probe may be used, but if used, it shall be placed 50 mm from the DUT. The monitor

probe shall be insulated from the ground plane.

11.4.2 Test Procedure

Use the calibrated injection probe method (substitution method) according to ISO 11452-4.

a) Use step frequencies listed in Table 11-2 and the modulation as specified in Figure 11-1.

b) In the frequency range from 1 to 30 MHz, testing shall be performed at two fixed injection probe positions (150 mm,

450 mm).

c) In the frequency range from 30 MHz to 400 MHz, testing shall be performed at two fixed injection probe positions

(450 mm, 750 mm).

d) If deviations are observed, the induced current shall be reduced until the DUT functions normally. Then the induced

current shall be increased until the deviation occurs. This level shall be reported as the deviation threshold.

e) Repeat testing for each harness connected to the DUT.

f) The DUT operating mode(s) exercised during testing shall conform to that delineated in the EMC test plan.

g) If a monitor probe is used during testing, it shall not be used to adjust the RF current delineated in Figure 11-1. The

measured values are used for information only and may be included in the test report.