Specifications

ManualsBrandsPulse ManualsFitness Equipment260

EMC-CS-2009.1

February 11, 2010

11.0 RF Immunity: RI 112, RI 114, RI 115

Radiated immunity requirements cover the frequency range from 1 to 3100 MHz. Requirements are based on anticipated

“off-vehicle” and “on-vehicle” RF sources (e.g. amateur radio, cellular phones). These requirements are applicable to the

following component categories:

Electronic Modules: A, AS, AM, AX, AY, AW (excludes RI 112)

Electronic Motors: EM

RF immunity to hand portable transmitters (RI 115), applicability is limited to selected devices packaged inside the passenger

or luggage compartments. See section 11.5 for details.

11.1 Generic Requirements

Component functional performance shall meet the acceptance criteria delineated in Table 11-1. Due to the wide frequency

coverage, multiple test methods are needed for performance verification. Level 1 and Level 2 requirements are dependent on

those test methods.

Table 11-1: RF Immunity Acceptance Criteria

Functional Performance Status

Requirement

Level

Class A Class B Class C

1 I

(1)

I I

2 II

(1,2)

II I

1 For audio, video and RF functions, some degradation in performance (e.g. distortion) is permitted,

but shall be defined and quantified in the component/subsystem's engineering specification and EMC

Test Plan.

2 For audio components, volume level (measured at speaker terminals) shall not increase by more than

50%.

11.2 Generic Test Setup and Test Procedures

• The DUT wire harness shall be 1700 mm (+ 300/- 0 mm) long. The harness shall be routed 50 mm above the ground

plane (excludes RI 114 bands 6 and 7) on an insulated support (ε

≤ 1.4) over the entire length between the DUT and

the Load Simulator. The harness can also be used for CISPR 25 Radiated Emission testing.

• When performing testing per RI 112 and RI 114 (ALSE, Bands 4 and 5), the DUT shall be placed on an insulated

support 50 mm above the ground plane. However, if the outer case of the DUT is metal and, when installed in the

vehicle is electrically connected to the vehicle's sheet metal, the DUT shall be mounted and electrically connected to

the ground plane during the test in a manner representative of the vehicle application. This configuration is only

permitted if documented in the product engineering specification and is representative of the vehicle application. The

DUT grounding configuration shall be documented in the EMC test plan and test report.

• When performing testing per RI114, Reverberation or ALSE, (Bands 6 and 7), a braided copper ground strap

shall be used to connect the DUT case to the battery negative terminal. The strap shall be 1700 mm (+300/- 0

mm) with a width no greater than 13 mm. The strap shall be co-routed with the test harness. This method

shall also be used if the DUT power returns require local grounding.

• When performing testing per RI 112 and RI 114, forward power shall be used as reference parameter for stress level

characterization and during the actual test of the DUT. When performing testing per RI 115, net forward shall be used

as reference parameter.

• When using pulse modulations, either peak envelope power (PEP) sensors or a spectrum analyzer are required to

measure forward power however use of PEP sensors are preferred. If the spectrum analyzer is used, it shall be tuned

to each individual frequency using zero span setting with a measurement bandwidth greater than or equal to 3 MHz

(for both the resolution or IF bandwidth and the video bandwidth, if applicable). The same type of measurement

device shall be used during both calibration and test. Alternative methods are not permitted.