WORLDWIDE
ENGINEERING
STANDARDS
General Specification
Electrical/Electronic
GMW3091
General Specification for Vehicles, Electromagnetic Compatibility
© Copyright 2006 General Motors Corporation All Rights Reserved
July 2006
Originating Department: North American Engineering Standards
Page 1 of 16
1 Introduction
Note: In the event of a conflict between the text of
this specification and the documents cited herein,
the text of this specification takes precedence.
Note: Nothing in the specification supersedes
applicable laws and regulations unless a specific
exemption has been obtained.
1.1 Scope. This document applies to the
Electromagnetic Compatibility (EMC) of passenger
vehicles, light duty trucks, and medium duty trucks.
This document is one out of a series of three global
EMC documents that specify EMC test and
validation requirements. The complete series
consists of the following documents:
GMW3091, GMW3097 and GMW3103 (All three
documents of equal revision carry the same
release date).
Note: Earlier versions of GMW12559,
GMW12001V, GMW12001R, and GMW3094, have
been integrated into GMW3091 for ease of use.
1.2 Mission/Theme. This document specifies
requirements and test procedures for verification
for EMC. It refers to International EMC Standards
whenever possible but also describes internal test
procedures if necessary.
1.3 Classification. Not applicable.
2 References
Note: Only the latest approved standards are
applicable unless otherwise specified.
2.1 External Standards/Specifications.
95/54/EC IEC CISPR 25
2004/104/EC ISO 11451-1
ECE R 10.02 ISO 11451-2
ICES-002 ISO 11451-3
IEC 489-3 ISO 10605:2001
IEC CISPR 12
2.2 GM Standards/Specifications.
GMW3059 GMW3103
GMW3097
2.3 Additional References.
Automobile Type Approval Handbook for Japanese
Certification
3 Requirements
3.1 Test Equipment and Test Samples.
3.1.1 Test Equipment. The test facilities and
equipment shall be in good working order and shall
have a valid calibration label.
3.2 Performance Requirements. The DUT
(Device Under Test) shall pass both, the
component level tests according to GMW3097 and
the vehicle level tests according to GMW3091,
following the process according to GMW3103.
For all tests the more stringent requirement applies
at frequency breakpoints and overlaps.
All deviations that occur during immunity testing
shall be recorded.
Note: The Regulatory Requirement 95/54/EC
referenced in this document will be replaced by
2004/104/EC beginning 01 January 2006 and
mandatory as of 01 July 2006. Therefore, after this
date, all references in this publication shall change
accordingly.
3.3 Radiated Emissions, Vehicle Tests.
3.3.1 Radiated Emissions at 10 m.
3.3.1.1 Requirements. The field strength of the
broadband radiated emissions (broadband as
defined in 95/54/EC) produced by the vehicle shall
not exceed the limits of 95/54/EC (Regulatory
Requirement) when evaluated in accordance with
95/54/EC.
The field strength of the broadband radiated
emissions (broadband as defined in
IEC CISPR 12) produced by the vehicle shall not
exceed the limits of IEC CISPR 12 (10 m test).
Note: For broadband radiated emissions,
compliance with the limits of IEC CISPR 12 (10 m
test) assures compliance with the limits of
95/54/EC (10 m test) and with the limits of
ICES-002.
The field strength of the narrowband radiated
emissions (narrowband as defined in 95/54/EC)
produced by the vehicle shall not exceed the limits
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