Specifications

EMC-CS-2009.1

February 11, 2010

15.2 Test Verification and Test setup

Testing shall be performed using the test setup shown in Figure 15-2. The test harness connecting the DUT to the Load

Simulator and modulated DC supply shall be <

2000 mm in length. All DUT power/power return circuits shall be connected

together at the modulated power supply.

Per previous versions of this requirement, a ground plane may be placed under the DUT and Load Simulator, but if used, the

DUT and wire harness shall be placed on an insulated support 50mm above the ground plane. Additionally, the negative

connection of the modulated DC supply and case of the Load Simulator shall be referenced to the ground plane

Figure 15-2: CI 210 Test Setup

1 2

Key

1. Signal Source 4. Oscilloscope

2. Modulated Power Supply ( DC coupled Audio Amplifier

with output impedance < 100 milliohms may be used)

5. DUT

3. Load Simulator 6. Passive High Impedance Probe (< 1Mohm, C< 10 pf)

15.3 Test Procedures

a) Without the DUT connected, adjust the DC voltage offset "U

" of the modulated power supply to 13.5 volts. Initially

set the AC voltage amplitude "U

" to zero volts (see Figure 15-2).

Connect and activate the DUT and verify it is functioning correctly. Verify that U

remains at 13.5 VDC. Adjust the

supply as required to achieve this voltage level.

At each test frequency increase U

as illustrated in Figure 15-3 to the corresponding stress level listed in Figure 15-1

while the DUT is operating. The dwell time shall be at least 2 seconds. A longer dwell time may be necessary if DUT

function response times are expected to be longer. This information shall be documented in the EMC test plan.

Monitor DUT function for any anomalies.

Repeat Steps a) through d) using the test frequency steps listed Table 15-1.

Repeat testing for all DUT operating modes listed in the EMC test plan.