Test Report DSC

FCC ID: GQ4-70T

Test Report

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FCCID_2201538

Date of Issue: February 24, 2014                Prepared For: TRW Automotive                      Test Report No.: 417124-667



                                   The University of Michigan Radiation Laboratory
                                                 3228 EECS Building
                                        Ann Arbor, Michigan 48109-2122 USA
                                                  Tel: (734) 483-4211
                                                 Fax: (734) 647-2106
                                               e-mail: liepa@umich.edu


                                                        Testing of

                              Electromagnetic Emissions
                                                            per
                                     USA: CFR Title 47, Part 15.231(e)
                                       Canada: IC RSS-210/GENe

                                                are herein reported for

                                        TRW Automotive
                                         231008, 231674
                                               Test Report No.: 417124-667
                                                    Copyright c 2014

                                                  Applicant/Provider:
                                                   TRW Automotive
                            24175 Research Drive, Farmington Hills Michigan 4835-2642 USA
                                  Phone: +1 (248) 699-4487, Fax: +1 (248) 699-4241
                                  Contact Person: Mark Baker; mark.baker@trw.com




                    Report by:                                 Report Date of Issue:   February 24, 2014
                                      Dr. Valdis V. Liepa

Results of testing completed on (or before) February 24, 2014 are as follows.
   Emissions: The transmitter intentional emissions COMPLY with the regulatory limit(s) by no less than 6.5 dB.
Transmit chain spurious harmonic emissions COMPLY by no less than 4.2 dB.




The University of Michigan Radiation Laboratory, 3228 EECS Building, Ann Arbor, Michigan 48109-2122 USA           Page 1 of 13


Date of Issue: February 24, 2014               Prepared For: TRW Automotive                                                               Test Report No.: 417124-667


Contents
1 Test Specifications, General Procedures, and Location                                                                                                                                   3
  1.1 Test Specification and General Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                                                       3
  1.2 Test Location and Equipment Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                                                                        4

2 Configuration and Identification of the Equipment Under Test                                                                                                                            5
  2.1 Description and Declarations . . . . . . . . . . . . . . . . . . . . .                              .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   5
      2.1.1 EUT Configuration . . . . . . . . . . . . . . . . . . . . . . .                               .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   5
      2.1.2 Modes of Operation . . . . . . . . . . . . . . . . . . . . . .                                .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   5
      2.1.3 Variants . . . . . . . . . . . . . . . . . . . . . . . . . . . . .                            .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   5
      2.1.4 Test Samples . . . . . . . . . . . . . . . . . . . . . . . . . .                              .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   6
      2.1.5 Functional Exerciser . . . . . . . . . . . . . . . . . . . . . .                              .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   6
      2.1.6 Modifications Made . . . . . . . . . . . . . . . . . . . . . .                                .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   6
      2.1.7 Production Intent . . . . . . . . . . . . . . . . . . . . . . .                               .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   6
      2.1.8 Declared Exemptions and Additional Product Notes . . . .                                      .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   6

3 Emissions                                                                                                                                                                                7
  3.1 General Test Procedures . . . . . . . . . . . . . . . . . .                 .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .    7
      3.1.1 Radiated Test Setup and Procedures . . . . . . .                      .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .    7
      3.1.2 Conducted Emissions Test Setup and Procedures                         .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .    9
      3.1.3 Power Supply Variation . . . . . . . . . . . . . .                    .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .    9
  3.2 Intentional Emissions . . . . . . . . . . . . . . . . . . . .               .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   10
      3.2.1 Fundamental Emission Pulsed Operation . . . .                         .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   10
      3.2.2 Fundamental Emission Bandwidth . . . . . . . .                        .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   11
      3.2.3 Fundamental Emission . . . . . . . . . . . . . . .                    .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   12
  3.3 Unintentional Emissions . . . . . . . . . . . . . . . . . .                 .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   13
      3.3.1 Transmit Chain Spurious Emissions . . . . . . .                       .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   13

List of Tables
   1     The University of Michigan Radiation Laboratory Equipment List.                                      .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .    4
   2     EUT Declarations. . . . . . . . . . . . . . . . . . . . . . . . . . . .                          .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .    6
   3     Pulsed Emission Characteristics (Duty Cycle). . . . . . . . . . . .                              .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   10
   4     Intentional Emission Bandwidth. . . . . . . . . . . . . . . . . . .                              .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   11
   5     Fundamental Radiated Emissions. . . . . . . . . . . . . . . . . . .                              .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   12
   6     Transmit Chain Spurious Emissions. . . . . . . . . . . . . . . . . .                             .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   13

List of Figures
   1     Photos of EUT. . . . . . . . . . . . . . . . . .     .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   . 5
   2     EUT Test Configuration Diagram. . . . . . . .        .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   . 6
   3     Radiated Emissions Diagram of the EUT. . . .         .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   . 7
   4     Radiated Emissions Test Setup Photograph(s).         .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   . 8
   5     Pulsed Emission Characteristics (Duty Cycle).        .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   . 10
   5     Pulsed Emission Characteristics (Duty Cycle).        .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   . 10
   6     Intentional Emission Bandwidth. . . . . . . .        .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   .   . 11




The University of Michigan Radiation Laboratory, 3228 EECS Building, Ann Arbor, Michigan 48109-2122 USA                                                                   Page 2 of 13


Date of Issue: February 24, 2014               Prepared For: TRW Automotive                       Test Report No.: 417124-667


1     Test Specifications, General Procedures, and Location
1.1    Test Specification and General Procedures
The ultimate goal of TRW Automotive is to demonstrate that the Equipment Under Test (EUT) complies with
the Rules and/or Directives below. Detailed in this report are the results of testing the TRW Automotive 231008,
231674 for compliance to:

 Country/Region                         Rules or Directive                    Referenced Section(s)

 United States                          Code of Federal Regulations           CFR Title 47, Part 15.231(e)
 Canada                                 Industry Canada                       IC RSS-210/GENe
    In association with the rules and directives outlined above, the following specifications and procedures are fol-
lowed herein.

                                       ”Methods of Measurement of Radio-Noise Emissions from Low-Voltage Electri-
      ANSI C63.4-2003
                                       cal and Electronic Equipment in the Range of 9 kHz to 40 GHz”


      Industry Canada                  ”The Measurement of Occupied Bandwidth”




The University of Michigan Radiation Laboratory, 3228 EECS Building, Ann Arbor, Michigan 48109-2122 USA           Page 3 of 13


Date of Issue: February 24, 2014               Prepared For: TRW Automotive                       Test Report No.: 417124-667


1.2    Test Location and Equipment Used
Test Location The EUT was fully tested by The University of Michigan Radiation Laboratory, 3228 EECS
Building, Ann Arbor, Michigan 48109-2122 USA. The Test Facility description and attenuation characteristics are
on file with the FCC Laboratory, Columbia, Maryland (FCC Reg. No: 91050) and with Industry Canada, Ottawa,
ON (File Ref. No: IC 2057A-1).

Test Equipment Pertinent test equipment used for measurements at this facility is listed in Table 1. The quality
system employed at The University of Michigan Radiation Laboratory has been established to ensure all equipment
has a clearly identifiable classification, calibration expiry date, and that all calibrations are traceable to the SI
through NIST, other recognized national laboratories, accepted fundamental or natural physical constants, ratio
type of calibration, or by comparison to consensus standards.

                      Table 1: The University of Michigan Radiation Laboratory Equipment List.

                   Test Instrument                                 Manufacturer/Model                       Q Number
      Spectrum Analyzer (9kHz-26GHz)                Hewlett-Packard 8593E, SN: 3412A01131                    HP8593E1
      Spectrum Analyzer (9kHz-6.5GHz)               Hewlett-Packard 8595E, SN: 3543A01546                    JDB8595E
      Power Meter                                   Hewlett-Packard, 432A                                    HP432A1
      Harmonic Mixer (26-40 GHz)                    Hewlett-Packard 11970A, SN: 3003A08327                  HP11970A1
      Harmonic Mixer (40-60 GHz)                    Hewlett-Packard 11970U, SN: 2332A00500                  HP11970U1
      Harmonic Mixer (75-110 GHz)                   Hewlett-Packard 11970W, SN: 2521A00179                  HP11970W1
      Harmonic Mixer (140-220 GHz)                  Pacific Millimeter Prod., GMA, SN: 26                   PMPGMA1
      S-Band Std. Gain Horn                         S/A, Model SGH-2.6                                        SBAND1
      C-Band Std. Gain Horn                         University of Michigan, NRL design                       CBAND1
      XN-Band Std. Gain Horn                        University of Michigan, NRL design                      XNBAND1
      X-Band Std. Gain Horn                         S/A, Model 12-8.2                                        XBAND1
      X-band horn (8.2- 12.4 GHz)                   Narda 640                                                XBAND2
      X-band horn (8.2- 12.4 GHz)                   Scientific Atlanta , 12-8.2, SN: 730                     XBAND3
      K-band horn (18-26.5 GHz)                     FXR, Inc., K638KF                                        KBAND1
      Ka-band horn (26.5-40 GHz)                    FXR, Inc., U638A                                        KABAND1
      U-band horn (40-60 GHz)                       Custom Microwave, HO19                                   UBAND1
      W-band horn(75-110 GHz)                       Custom Microwave, HO10                                   WBAND1
      G-band horn (140-220 GHz)                     Custom Microwave, HO5R                                   GBAND1
      Bicone Antenna (30-250 MHz)                   University of Michigan, RLBC-1                            LBBIC1
      Bicone Antenna (200-1000 MHz)                 University of Michigan, RLBC-2                            HBBIC1
      Dipole Antenna Set (30-1000 MHz)              University of Michigan, RLDP-1,-2,-3                      UMDIP1
      Dipole Antenna Set (30-1000 MHz)              EMCO 3121C, SN: 992 (Ref. Antennas)                       EMDIP1
      Active Rod Antenna (30 Hz-50 MHz)             EMCO 3301B, SN: 3223                                     EMROD1
      Active Loop Antenna (30 Hz-50 MHz)            EMCO 6502, SN:2855                                      EMLOOP1
      Ridge-horn Antenna (300-5000 MHz)             University of Michigan                                    UMRH1
      Amplifier (5-1000 MHz)                        Avantek, A11-1, A25-1S                                    AVAMP1
      Amplifier (5-4500 MHz)                        Avantek                                                   AVAMP2
      Amplifier (4.5-13 GHz)                        Avantek, AFT-12665                                        AVAMP3
      Amplifier (6-16 GHz)                          Trek                                                      TRAMP1
      Amplifier (16-26 GHz)                         Avantek                                                   AVAMP4
      LISN Box                                      University of Michigan                                   UMLISN1
      Signal Generator                              Hewlett-Packard 8657B                                      HPSG1




The University of Michigan Radiation Laboratory, 3228 EECS Building, Ann Arbor, Michigan 48109-2122 USA           Page 4 of 13


Date of Issue: February 24, 2014               Prepared For: TRW Automotive                       Test Report No.: 417124-667


2     Configuration and Identification of the Equipment Under Test
2.1     Description and Declarations
The equipment under test is an automotive Tire Pressure Measurement (TPM) transmitter. The EUT is approxi-
mately 5 x 6 x 1 cm (approx.) in dimension, and is depicted in Figure 1. It is powered by a 3 VDC Lithium cell
battery. In use, this device is permanently affixed inside the tire of a motor vehicle. Table 2 outlines provider declared
EUT specifications.




                                                Figure 1: Photos of EUT.

2.1.1    EUT Configuration
The EUT is configured for testing as depicted in Figure 2.

2.1.2    Modes of Operation
The DUT periodically transmits tire pressure data when in motion. The device is also capable of being automati-
cally/manually actuated via LF interrogation during servicing (LEARN mode).

2.1.3    Variants
There are two variants of the DUT. Part number 231008 employs a short 20 degree angled stem on the chassis,
231674 employs a longer 54 degree valve stem to use on a different style rim. Both variants are electrically identical.




The University of Michigan Radiation Laboratory, 3228 EECS Building, Ann Arbor, Michigan 48109-2122 USA           Page 5 of 13


Date of Issue: February 24, 2014                Prepared For: TRW Automotive                      Test Report No.: 417124-667


                                                Table 2: EUT Declarations.

 General Declarations
 Equipment Type:                   TPM Transmitter            Country of Origin:            USA
 Nominal Supply:                   3 VDC                      Oper. Temp Range:             Not Declared
 Frequency Range:                  433.92 MHz                 Antenna Dimension:            as pictured
 Antenna Type:                     metal loop                 Antenna Gain:                 -30 dBi (approx)
 Number of Channels:               1                          Channel Spacing:              Not Applicable
 Alignment Range:                  Not Declared               Type of Modulation:           ASK and FSK

 United States
 FCC ID Number:                    GQ4-70T                    Classification:               DSC

 Canada
                                                                                            Remote Control Device, Ve-
 IC Number:                        1470A-51T                  Classification:
                                                                                            hicular Device




                                                    EUT
                                                  TRW, Inc.
                                              TPMS Transmitter
                                       Type Designator: 231008, 231674



                                        Figure 2: EUT Test Configuration Diagram.


2.1.4    Test Samples
Five samples in total were provided. Two samples programmed for CW transmission (one of each stem length), one
normal operating sample capable of manually activated transmissions via LF interrogation and periodic transmission
when shaken, and two samples (one of each stem length) un-sealed for photographs.

2.1.5    Functional Exerciser
Normal operating EUT functionality was verified by observation of transmitted signal.

2.1.6    Modifications Made
There were no modifications made to the EUT by this laboratory.

2.1.7    Production Intent
The EUT appears to be a production ready sample.

2.1.8    Declared Exemptions and Additional Product Notes
The EUT is permanently installed in a transportation vehicle. As such, digital emissions are exempt from US and
Canadian digital emissions regulations (per FCC 15.103(a) and IC correspondence on ICES-003).
    The EUT also employs some modes of operation that alert the vehicle user of sudden changes in tire pressure
or temperature. Such alert modes fall under FCC 15.231(a)(4), and may operate during the pendency of the alarm
condition. A detailed list of all operating modes is included in the Description of Operation exhibit included in this
application.


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Date of Issue: February 24, 2014                  Prepared For: TRW Automotive                         Test Report No.: 417124-667


3     Emissions
3.1     General Test Procedures
3.1.1    Radiated Test Setup and Procedures
Radiated electromagnetic emissions from the EUT are first evaluated in our shielded fully anechoic chamber. Spec-
trum and modulation characteristics of all emissions are recorded, and emissions above 1 GHz are fully characterized.
The anechoic chamber contains a set-up similar to that of our outdoor 3-meter site, with a turntable and antenna
mast. Instrumentation, including spectrum analyzers and other test equipment as detailed in Section 1.2 are em-
ployed. After indoor pre-scans, emission measurements are made on our outdoor 3-meter Open Area Test Site
(OATS). If the EUT connects to auxiliary equipment and is table or floor standing, the configurations prescribed in
ANSI C63.4 / CISPR-22 are followed. Alternatively, a layout closest to normal use (as declared by the provider)
is employed if the resulting emissions appear to be worst-case in such a configuration. See Figure 3.             All


                         Long Interface Cables
                                               EUT Power                   Long Interface Cables
                               (to AUX)                                                          AUX Power
                                                                                 (to EUT)




                            Equipment Under Test                                        Auxiliary
                                   (EUT)
                                                           Short Interface Cables      Equipment
                                                                                         (AUX)




                                                 Radiated Emissions Table

                                    Figure 3: Radiated Emissions Diagram of the EUT.

intentionally radiating elements are placed on the test table lying flat, on their side, and on their end (3-axes) and
the resulting worst case emissions are recorded. For both horizontal and vertical polarizations, the test antenna is
raised and lowered from 1 to 4 m in height until a maximum emission level is detected. The EUT is then rotated
through 360o in azimuth until the highest emission is detected. The test antenna is then raised and lowered one last
time from 1 to 4 m and the worst case value is recorded. Photographs of the test setup employed are depicted in
Figure 4.
    If the EUT exhibits spurious emissions due to internal receiver circuitry, such emissions are measured with an
appropriate carrier signal applied. For devices with intentional emissions below 30 MHz, a shielded loop antenna
is used as the test antenna. It is placed at a 1 meter receive height and appropriate low frequency magnetic field
extrapolation to the regulatory limit distance is employed. Emissions between 30 MHz and 1 GHz are measured using
tuned dipoles and/or calibrated broadband antennas. Emissions above 1 GHz are characterized using standard gain
horn antennas or calibrated broadband ridge-horn antennas. Care is taken to ensure that test receiver resolution and
video bandwidths meet the regulatory requirements, and that the emission bandwidth of the EUT is not reduced.
    Where regulations allow for direct measurement of field strength, power values (dBm) measured on the test
receiver / analyzer are converted to dBµV/m at the regulatory distance, using
                                          Edist = 107 + PR + KA − KG + KE − CF
where PR is the power recorded on spectrum analyzer, in dBm, KA is the test antenna factor in dB/m, KG is the
combined pre-amplifier gain and cable loss in dB, KE is duty correction factor (when applicable) in dB, and CF is
a distance conversion (employed only if limits are specified at alternate distance) in dB. This field strength value is
then compared with the regulatory limit. If effective isotropic radiated power (EIRP) is compute, it is computed as
                                           EIRP (dBm) = E3m (dBµV /m) − 95.2.


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Date of Issue: February 24, 2014                 Prepared For: TRW Automotive                     Test Report No.: 417124-667


When presenting data at each frequency, the highest measured emission under all possible EUT orientations (3-axes)
is reported.




                                   Figure 4: Radiated Emissions Test Setup Photograph(s).




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Date of Issue: February 24, 2014               Prepared For: TRW Automotive                       Test Report No.: 417124-667


3.1.2    Conducted Emissions Test Setup and Procedures
Battery Power Conducted Spurious The EUT is not subject to measurement of power line conducted emissions
as it is powered solely by its internal battery.

3.1.3    Power Supply Variation
Tests at extreme supply voltages are made if required by the the procedures specified in the test standard, and results
of this testing are detailed in this report.
    In the case the EUT is designed for operation from a lead-acid battery power source, the extreme test voltages
are evaluated between 90% and 130% of the nominal battery voltage declared by the manufacturer. For float charge
applications using gel-cell type batteries, extreme test voltages are evaluated between 85% and 115% of the nominal
battery voltage declared. For all battery operated equipment, worst case intentional and spurious emissions are
re-checked employing a new (fully charged) battery.




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Date of Issue: February 24, 2014                  Prepared For: TRW Automotive                     Test Report No.: 417124-667


3.2     Intentional Emissions
3.2.1    Fundamental Emission Pulsed Operation
The details and results of testing the EUT for pulsed operation are summarized in Table 3. Plots showing the
measurements made to obtain these values are provided in Figure 5.

                                    Table 3: PulsedUM Duty Cycle
                                                    Emission     Computation
                                                             Characteristics (Duty Cycle).

 When the transmitter is activated by tire rotation or via encoded LF interrogation, it can, in the worst case,
 transmit one 10.5 ms FSK frame or one 22.0 ms ASK frame, or two 10.5 ms ASK frames within any
 given 100 ms window. Both ASK frames are Manchester encoded at a 50% duty. The resulting duty cycle is
 computed in the table below. In the Figure that follows, (a) shows the manually activated transmission, (b)
 shows the periodic transmission.

                                  Duty Cycle Computation                                                     TRW; FCC/IC
   1 KEFSK = 10.5 ms / 100 ms = 0.105 or -19.6 dB
   2 KEASK = (22.0 ms x 0.0525 / 0.1030) / 100 ms = 0.112 or -19.0 dB
                                                                                                Meas. U of Mich.; 2/07/2014




                               Figure 5(a): Pulsed Emission Characteristics (Duty Cycle).




                                   Figure 5(b): Pulsed Emission Characteristics (Duty Cycle).



The University of Michigan Radiation Laboratory, 3228 EECS Building, Ann Arbor, Michigan 48109-2122 USA           Page 10 of 13


Date of Issue: February 24, 2014               Prepared For: TRW Automotive                       Test Report No.: 417124-667


3.2.2    Fundamental Emission Bandwidth
Emission bandwidth (EBW) of the EUT is measured with the device placed in the test mode(s) with the shortest
available frame length and minimum frame spacing. Radiated emissions are recorded following the test procedures
listed in Section 1.1. The 20 dB EBW is measured as the max-held peak-detected signal when the IF bandwidth
is greater than or equal to 1% of the receiver span. For complex modulations other than ASK and FSK, the 99%
emission bandwidth per IC test procedures has a different result, and is also separately reported.The results of EBW
testing are summarized in Table 4. Plots showing measurements employed to obtain the emission bandwidth reported
are provided in Figure 6.
                                                   UM EBW Table
                                    Table 4: Intentional Emission Bandwidth.

   The emission bandwidth of the signal is shown in the following Figure. The allowed 99% bandwidth is 0.25% of 433.92
   MHz, or 1084.8 kHz.


                                   Measured Emission Bandwidth                                             TRW; FCC/IC
           EBW meas.
     #       (kHz)
     1       115.0
                                                                                              Meas. U of Mich.; 2/07/2014




                                      Figure 6: Intentional Emission Bandwidth.




The University of Michigan Radiation Laboratory, 3228 EECS Building, Ann Arbor, Michigan 48109-2122 USA          Page 11 of 13


Date of Issue: February 24, 2014                                      Prepared For: TRW Automotive                    Test Report No.: 417124-667


3.2.3    Fundamental Emission
Following the test procedures listed in Section 1.1, radiated emissions measurements are made on the EUT for both
Horizontal and Vertical polarized fields. Table 5 details the results of these measurements.

                                                              Table 5: Fundamental Radiated Emissions.

                 Fundamental Radiated Emission                                                                                 TRW; FCC/IC
           Freq. Ant. Ant.    Pr    Det. Ka Kg E3* E3lim Pass
     #     MHz Used Pol. dBm Used dB/m dB dBµV/m dBµV/m dB                                                             Comments
     1   231008 (SHORT STEM - 20 DEGREE)
     2    433.9    Dip  H -22.3 Pk 21.5 21.3 65.9   72.9 6.9 end
     3    433.9    Dip  V -23.5 Pk 21.5 21.3 64.7   72.9 8.1 side
     4   231674 (LONG STEM – 54 DEGREE)
     5    433.9    Dip  H -21.9 Pk 21.5 21.3 66.3   72.9 6.5 end
     6    433.9    Dip  V -23.6 Pk 21.5 21.3 64.6   72.9 8.2 side
     7
     8                                                      * Includes 19.0 dB Duty Cycle
     9
                                                                                                               Meas. U of Mich.; 2/07/2014



                                                          Fundamental Emission vs. Supply Voltage
                                            -21.0
             Relative Received Power (dB)




                                            -23.0
                                            -25.0
                                            -27.0
                                            -29.0
                                            -31.0
                                            -33.0
                                            -35.0
                                                    2.0       2.5           3.0                3.5       4.0             4.5
                                                                          Supply Voltage (V)




The University of Michigan Radiation Laboratory, 3228 EECS Building, Ann Arbor, Michigan 48109-2122 USA                              Page 12 of 13


Date of Issue: February 24, 2014               Prepared For: TRW Automotive                       Test Report No.: 417124-667


3.3     Unintentional Emissions
3.3.1    Transmit Chain Spurious Emissions
The results for the measurement of transmit chain spurious emissions at the nominal voltage and temperature are
provided in Table 6. Measurements are performed to 10 times the highest fundamental operating frequency.

                                     Table 6: Transmit Chain Spurious Emissions.

                Spurious Radiated Emissions                                                               TRW; FCC/IC
        Freq. Ant. Ant. Pr        Det. Ka Kg         E3*    E3lim                  Pass
    #   MHz Used Pol. dBm Used dB/m dB dBµV/m dBµV/m                                dB              Comments
    1 231008 (SHORT STEM - 20 DEGREE)
    2   867.8   Dip    H -63.3 Pk 27.8 17.9 34.7             47.7                  13.0   flat
    3   867.8   Dip    V -60.8 Pk 27.8 17.9 37.2             47.7                  10.5   end
    4  1301.8 Horn H -33.8 Pk 20.7 28.1 46.8                 54.0                   7.2   flat
    5  1735.7 Horn H -40.4 Pk 21.9 27.9 41.6                 54.0                  12.4   flat
    6  2169.6 Horn H -34.1 Pk 22.9 27.0 49.8                 54.0                   4.2   flat
    7  2603.5 Horn H -39.4 Pk 24.1 26.2 46.5                 54.0                   7.5   end
    8  3037.4 Horn H -61.3 Pk 25.5 25.0 27.2                 54.0                  26.8   end
    9  3471.4 Horn H -59.8 Pk 26.8 24.4 30.6                 54.0                  23.4   flat
   10 3905.3 Horn H -67.6 Pk 28.1 23.4 25.1                  54.0                  28.9   end
   11 4339.2 Horn H -73.0 Pk 29.5 21.0 23.5                  54.0                  30.5   flat
   12
   13 231674 (LONG STEM – 54 DEGREE)
   14   867.8   Dip    H -66.1 Pk 27.8 17.9 31.9             47.7                  15.8   flat
   15   867.8   Dip    V -63.0 Pk 27.8 17.9 35.0             47.7                  12.7   end
   16 1301.8 Horn H -33.5 Pk 20.7 28.1 47.1                  54.0                   6.9   end
   17 1735.7 Horn H -40.2 Pk 21.9 27.9 41.8                  54.0                  12.2   end
   18 2169.6 Horn H -34.7 Pk 22.9 27.0 49.2                  54.0                   4.8   end
   19 2603.5 Horn H -41.3 Pk 24.1 26.2 44.6                  54.0                   9.4   flat
   20 3037.4 Horn H -63.7 Pk 25.5 25.0 24.8                  54.0                  29.2   flat
   21 3471.4 Horn H -58.4 Pk 26.8 24.4 32.0                  54.0                  22.0   flat
   22 3905.3 Horn H -66.6 Pk 28.1 23.4 26.1                  54.0                  27.9   flat
   23 4339.2 Horn H -73.8 Pk 29.5 21.0 22.7                  54.0                  31.3   flat
   24
   25
   26
   27                        * Includes 19.0 dB Duty Cycle.
   28
                                                                                          Meas. U of Mich.; 2/07/2014




The University of Michigan Radiation Laboratory, 3228 EECS Building, Ann Arbor, Michigan 48109-2122 USA          Page 13 of 13



Document Created: 2014-02-24 15:00:48
Document Modified: 2014-02-24 15:00:48

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