Test Report

FCC ID: WHR001

Test Report

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FCCID_1054308

Product Safety Engineering, Inc 12955 Bellamy Brothers Blvd. Dade City, FL 33525 352-588-2209 TEST REPORT 08F265B 07/21/08 Applicant: The Nielsen Company 501 Brooker Creek Blvd. Oldsmar, FL 34677 Product: Models - 1771, 1772, 1773 In Store Tracking System Test dates: 06/19/2008 - 06/25/2008 Receive Date: 06/19/2008 Prepared by: Steven E. Hoke - EMC Site Manager This report may only be reproduced in full without written permission from Product Safety Engineering, Inc. The Nielsen Company FCC ID: WHR001 Page 1 of 18

Table of Contents Page 2 Table of contents Page 3-4 Test procedures Page 5 Equipment Calibration Page 6-8 Minimum Bandwidth Test Data Page 9-11 Peak Power Spectral Density Test Data Page 12 Output Power Test Data Page 13 Radiated Spurious Emissions Test Data / Bandedge Page 14-17 AC Powerline Conducted Emissions Test Data Page 18 RF Exposure - Power Density Compliance Calculation Test Results Summary Test Requirement Measured Pass/Fail Minimum 6 dB Bandwidth > 500 kHz 1.6 MHz Pass Power Spectral Density < 8 dBm / 3 kHz -5.4 dBm Pass Output Power < 1 watt 0.0027 watts Pass Spurious Emissions =>20 dB down > 30 down Pass Powerline Conducted Limit Table 20.0 dB margin Pass RF Exposure 1.0 mW / cm2 0.00054 mW / cm2 Pass Bandedge =>20 dB down > 20 down Pass The Nielsen Company FCC ID: WHR001 Page 2 of 18

Test Procedures Product description: The system under test provides consumer data to a store operator regarding the movement of each shopping cart within the retail outlet. The received data is achieved with internal direct sequence spread spectrum transceivers operating in the 2.4 GHz frequency band. Powerline conducted interference: 15.207 (a) The AC powerline conducted emissions measurements were made in accordance with ANSI C64.3 2003. Power Output: 15.247 (b)(3) The peak output power was measured with the EUT set to low, medium and high transmit frequencies. The EUT was transmitting at its maximum output power. The measurements were made using the alternate field strength method described in FCC publication “Measurements of Digital Transmissions Systems Operating Under Section 15.247, issued March 23, 2005". If antenna conducted tests cannot be performed on this device, radiated tests to show compliance with the various conducted requirements of Section 15.247 are acceptable. As stated previously, a pre-amp must be used in making the following measurements. 1. Calculate the transmitter's peak power using the following equation: Where: E = the measured maximum field strength in V/m. Set the RBW > 6dB bandwidth of the emission or use a peak power meter. P = (E x d) squared / (30 x G) G = the numeric gain of the transmitting antenna over an isotropic radiator. d = the distance in meters from which the field strength was measured. P = the power in watts for which you are solving: . Power Spectral Density: 15.247 (e) The peak power spectral density measurements were measured with the EUT set to low, medium and high transmit frequencies. The data rate of the radio was varied to determine the level that produced the worst case. The measurements were made using the alternate field strength method described in FCC publication “Measurements of Digital Transmissions Systems Operating Under Section 15.247, issued March 23, 2005". The power spectral density was measured as follows: A. Tune the analyzer to the highest point of the maximized fundamental emission. Reset the analyzer to a RBW = 3 kHz, VBW > RBW, span = 300 kHz, sweep = B. From the peak level obtained in (A), derive the field strength, E, by applying the appropriate antenna factor, cable loss, pre-amp gain, etc. Using the equation listed in (1), calculate a power level for comparison to the + 8 dBm limit. Minimum Bandwidth: 15.247 (a)(2) The minimum 6 dB bandwidth shall be at least 500 kHz. The RBW was set to (100) kHz and the VBW was set to (300) kHz. The (6) dB down points were then measured. The Nielsen Company FCC ID: WHR001 Page 3 of 18

. Radiated Spurious Emissions: 15.247 (d) The radiated spurious emissions measurements were measured with the EUT set to low, medium and high transmit frequencies. The measurements were made using our open area test site. All emissions up to 25 Ghz were investigated and those falling into restricted bands were measured for compliance. Band Edge: The Spurious RF conducted emissions at the edges of the authorized band were measured with the EUT set to low and high transmit frequencies. The data rate of the radio was (250) kbps. The measurements were made using our open area test site. The channels closest to the band edges were selected. The spectrum was scanned across each band edge from 25 MHz below the band edge to 25 MHz above the band edge. The Nielsen Company FCC ID: WHR001 Page 4 of 18

TEST EQUIPMENT CALIBRATION INFORMATION Manufacturer Model Description Serial Number Cal Due Hewlett Packard 8566B Spectrum Analyzer 2421A00526 07/13/08 Hewlett Packard 85662A Display 2403A07352 07/13/08 Hewlett Packard 85650A Quasi-Peak Adapter 2043A00209 07/13/08 Hewlett Packard 8447D Preamp 0.1 - 1,000 MHz 2944A06832 12/18/08 Hewlett Packard 8568B Spectrum Analyzer 2407A03213 Hewlett Packard 85662A Display 2340A05806 Hewlett Packard 85650A Quasi-Peak Adapter 2043A00358 Hewlett Packard 8447D Preamp 0.1 - 1,000 MHz 2944A06901 Hewlett Packard 8447D Preamp 0.1 - 1,000 MHz 1937A03247 Hewlett Packard 8449B Preamp 1 - 26.5 GHz 3008A00320 08/09/08 Hewlett Packard 8648B Signal Generator 3443U00312 Hewlett Packard 8672A Signal Generator 2211A02426 Eaton 96005 Log Periodic Antenna 1099 Electro-Metrics LPA 30 Log Periodic Antenna 2280 Electro-Metrics BIA 30 Biconical Antenna 3852 Electro-Metrics BIA 25 Biconical Antenna 4283 Electro-Mechanics 3115 Double Ridge Guide Ant. 3810 01/16/10 Electro-Metrics ALR30M Magnetic Loop Antenna 824 Solar 8012 LISN 924840 Solar 8028 LISN 829012/809022 05/02/09 Solar 8028 LISN 903725/903726 Agilent E7402A Absorbing Clamp US39150137 Leader EMC-30 Function Generator 8060233 Electro-Metrics ALA-130/A EMI Receiver 191 06/01/09 Antenna Research 63-867 Loop Antenna 106 Radio Shack 63-867A Temp/Hygrometer N/A Radio Shack Temp/Hygrometer N/A The Nielsen Company FCC ID: WHR001 Page 5 of 18

Test: Minimum Bandwidth per 15.247(a)(2) Date: 06/25/08 Requirement: The (6) dB bandwidth must be at least (500) kHz RBW: (100) kHz VBW: (300) kHz Channel: 1 The Nielsen Company FCC ID: WHR001 Page 6 of 18

Test: Minimum Bandwidth per 15.247(a)(2) Date: 06/25/08 Requirement: The (6) dB bandwidth must be at least (500) kHz RBW: (100) kHz VBW: (300) kHz Channel: 6 The Nielsen Company FCC ID: WHR001 Page 7 of 18

Test: Minimum Bandwidth per 15.247(a)(2) Date: 06/25/08 Requirement: The (6) dB bandwidth must be at least (500) kHz RBW: (100) kHz VBW: (300) kHz Channel: 11 The Nielsen Company FCC ID: WHR001 Page 8 of 18

1 Test: Power Spectral Density per 15.247(e) Date: 06/25/08 Requirement: The peak power spectral density conducted from the antenna port of a direct sequence transmitter must not be greater than (+8) dBm in any (3) kHz band during any time interval of continuous transmission. RBW: (3) kHz VBW: (10) kHz Channel: 1 Peak Power Spectral Density = (82.5 dBuV = 89.2 dBuV/m) = 28,840 uV/m = 0.029 E/m P=(E*d)^2 / (30 *G) P = (0.029 *3)^2 / (30) P = 0.25 mW P = 0.25 mW = -6.02 dBm / 3 kHz The Nielsen Company FCC ID: WHR001 Page 9 of 18

Test: Power Spectral Density per 15.247(e) Date: 06/25/08 Requirement: The peak power spectral density conducted from the antenna port of a direct sequencr transmitter must not be greater than (+8) dBm in any (3) kHz band during any time interval of continuous transmission. RBW: (3) kHz VBW: (10) kHz Channel: 6 Peak Power Spectral Density = (81.4 dBuv + 2 dB cable loss - 107) = -23.6 dBm / 3 kHz Peak Power Spectral Density = (81.4 dBuV = 88.1 dBuV/m) = 25,409 uV/m = 0.025 E/m P=(E*d)^2 / (30 *G) P = (0.025 *3)^2 / (30) P = 0.19 mW P = 0.19 mW = -7.2 dBm / 3 kHz The Nielsen Company FCC ID: WHR001 Page 10 of 18

Test: Power Spectral Density per 15.247(e) Date: 06/25/08 Requirement: The peak power spectral density conducted from the antenna port of a direct sequencr transmitter must not be greater than (+8) dBm in any (3) kHz band during any time interval of continuous transmission. RBW: (3) kHz VBW: (10) kHz Channel: 11 Peak Power Spectral Density = (83.0 dBuV + 2 dB cable loss -107) = -22.0 dBm / 3 kHz Peak Power Spectral Density = (83.0 dBuV = 89.7 dBuV/m) = 30,550 uV/m = 0.031 E/m P=(E*d)^2 / (30 *G) P = (0.031 *3)^2 / (30) P = 0.29 mW P = 0.29 mW = -5.37 dBm / 3 kHz The Nielsen Company FCC ID: WHR001 Page 11 of 18

Test: Output Power per 15.247(b)(3) Date: 06/24/08 Requirement: The maximum peak output power must not exceed 1 watt. RBW: (1) MHz VBW: (3) MHz Channel: See Table Peak Output Power = (2.7) mW Channel Level ACF Cable Preamp Adj. E/m Watts dBuV Loss Gain Level mW dBuV/m 1 92.9 28.6 2.1 24.0 99.6 0.095 2.7 6 91.8 28.6 2.1 24.0 98.5 0.084 2.1 11 90.9 28.6 2.1 24.0 97.6 0.076 1.7 P=(E*D)^2 / (30 * G) P = watts E = volts per meter D = distance in meters G = transmit antenna numeric gain P=(0.095 * 3)^2 / (30 *1) P=(0.285)^2 / 30 P=(0.0812) / 30 P= 0.002708 watts The Nielsen Company FCC ID: WHR001 Page 12 of 18

Test: Radiated Spurious Emissions per 15.247(d) Date: 06/24/08 Requirement: In any 100 kHz bandwidth outside the authorized band, the maximum level of radio frequency power must be at least 20 dB down from the highest emissions level within the authorized band. RBW: (100) kHz VBW: (300) kHz Channel: 1, 6, & 11 Maximum Conducted Spurious Emissions = Greater than (30) dB down Test: Bandedge Emissions The Nielsen Company FCC ID: WHR001 Page 13 of 18

Test: AC powerline Conducted Emissions per15.207 Date: 10/19/2005 Requirement: If the EUT is connected to the AC power, it must meet the limits set forth from (150) kHz to (30) MHz. RBW: (9) kHz VBW: (10) kHz Channel: 1,6,11 (worst case shown below) Detector: Quasi-Peak Line Side: QP Margin = Greater than (20) dB throughout frequency range The Nielsen Company FCC ID: WHR001 Page 14 of 18

FCC ID: WHR001 Page 15 of 18

Test: AC powerline Conducted Emissions per15.207 Date: 06/25/08 Requirement: If the EUT is connected to the AC power, it must meet the limits set forth from (150) kHz to (30) MHz. RBW: (9) kHz VBW: (10) kHz Channel: 1,6,11 (worst case shown) Detector: Quasi-Peak Neutral Side: QP Margin is greater than (20) dB throughout frequency range The Nielsen Company FCC ID: WHR001 Page 16 of 18

FCC ID: WHR001 Page 17 of 18

RF Exposure - Power Density Compliance Calculation 15.247(I) - Systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy levels in excess of the Commission's guidelines. Compliance is based upon section CFR 47 section 1.1310, Table (1) Limits for Maximum Permissible Exposure (MPE), (b) Limits for General Population/Uncontrolled Exposure. The stated limit is (1.0) mW/cm2 and compliance was calculated using the following formula: S=(P G) / ( 4 B r2) Where: S = Power density in mW/cm2 P = Power in mW G = Numerical antenna gain r = Distance in cm Maximum output power = (2.7) mW Antenna gain (numeric) = 1.0 dB Distance = 20 cm S = (2.7 * 1.0) / (12.57 * 400) S= (2.7) / (5,028) S= (0.00054) mW / cm2 Limit = (1.0) mW / cm2 The Nielsen Company FCC ID: WHR001 Page 18 of 18


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Document Modified: 2009-01-08 10:57:53
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