Test Report

FCC ID: C5F7NFCMC523X

Test Report

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FCCID_28970

Test Report S/N: B.990312167.C5F FCC Class B Test Dates: March 16—17, 1999 Certification MEASUREMENT REPORT Scope — Measurement and determination of electromagnetic emissions (EME) of radio frequency devices including intentional and/or unintentional radiators for compliance with the technical rules and regulations of the Federal Communications Commission. Company Name: DAEWOO ELECTRONICS CO., LTD. Address: 541, 5—Ga, Namdaemoon—Ro Jung—Gu, Seoul, Korea Attention: Joon H. Lee, EMC Manager R&D Center Team 1, Monitor Business Division & FCCID:; C5F7ZNFCMC523X * Classification: FCC Class B Peripheral Device (JBP] * EUT Type: 15—inch Color Monitor + Trade Name(s): DAEWOO e« Model(s): 523X * Max. Resolution: 1024 x 7688 Non—interlaced @48kHz/60Hz) »— Frequency Range: H—SYNC: 30kHz ~ 54kHz (Autornatic) V—SYNC: 50Hz ~ 120Hz (Automatic) e« Cable(s): Shielded D—Sub (with two ferrites) e Power Cord: Unshielded e Rule Part(s): FCC Part 15 Subpart B e Test Procedure: ANSI €63.4 (1992) e Dates of Tests: March 16—17, 1999 e Place of Tests: PCTEST Lab, Columbia, MD U.S.A. & Test Report S/N: B.990312167.C5F nyvlas) Lab Code 100431—0 © 1999 PCTEST Lab 15" Color Monitor Model: 523X 1 DAEWOO FCC ID: CSF7NFCMCS23X

Test Report S/N: B.990312167.C5F FCC Class B Test Dates: March 16—17, 1999 Certification Introduction The measurement procedure described in American National Standard for Methods of Meas— urement of Radio—Noise Emissions from Low—Voltage Electrical and Electronic Equipment in the Range of IkHz to 40 GHz (ANSI €63.4—1992) was used in determining radiated and con— ducted emissions emanating from Daewoo Electronics Co., Ltd. 15" Color Monitor FCC ID: C5FZNFCMC5S23X. These measurement tests were conducted at PCTEST Engineering Laboratory facility in New Concept Business Park, Guilford Industrial Park, Columbia, Maryland. The site address is 6660—B Dobbin Road, Columbia, MD 21045. The test site is one of the highest points in the Columbia area with an elevation of 390 feet above mean sea level. The site coordinates are 39°11‘15" N latitude and 76°49‘38" W longitude. The facility is 1.5 miles North of the FCC laboratory, and the ambient signal and ambient signal strength are approximately equal to those of the FCC laboratory. The detailed description of the measurement facility was found to be in compliance with the requirements of § 2.948 according to ANSI C63.4 on October 19, 1992. ~ *"~Untv of Merylang 4 R " c.:,' UBMLEMNiq) Perrse BIA waAsHp.c i ,, d &€ 2o C Fig. 1. The map above shows the Columbia vicinity area. ¥ The map also shows PCTest Lab, FCC Lab and BWI airport. (Scale 1"=2miles) © 1999 PCTEST Lab 15" Color Monitor Model: 523X DAEWOO FCC ID: CSF7NFCMCS23X

Test Report S/N: B.990312167.C5F FCC Class B Test Dates: March 16—17, 1999 Certification Product Information Equipment Description: The Equipment Under Test (EUT) is the DAEWOO Electronics Co., Ltd. Model: 523X 15— inch Color Monitor FCC ID: CS5FZNFCMC523X. The EUT features an on—screen display, and is in compliance with Swedish MPR It and EPA Energy Star power saving requirements. Max. Resolution: 1024 x 768, Non—interlaced @48kHz/60Hz Frequency Range: H—Sync: 30kHz ~ 54kHz V—Sync: 50Hz ~ 120Hz Pixel Clock Rate: 65 MHz Picture Tube: 15—inch (Orion M36KXU110XX61) Flat square tube, Non—glare, Anti—static Dot Pitch: 0.28 mm Power Consumption: 75 W (maximum) Power Supply Input: 100—240VAC, 50/60Hz Power Cord: Unshielded Cable(s): Shielded D—Sub with two ferrites Port/Input Connector(s): (1) 15—Pin D—Sub type signal connector Dimensions (WxHxD): 366 x 343 x 392 mm Weight (net): 12.3 kg. (27.1 lbs) EMI suppression device(s) installed in production: * see schematics (Appendix B) EMI suppression device(s) added and/or modified during testing: * none © 1999 PCTEST Lab 15" Color Monitor Model: 523X 3 DAEWOO FCC ID: CSF7ZNFCMCS23X

Test Report S/N: B.990312167.C5F FCC Class B Test Dates: March 16—17, 1999 Certification Description of Tests Conducted Emissions The line—conducted facility is located inside a 16‘x20‘x10‘ shielded enclo— [ i sure. It is manufactured by Ray Proof Series 81 (Fig. 2). The shielding ef— " J i fectiveness of the shielded room is in accordance with MIL—Std—285 or NSA l___ Etm l \K 65—6. e———issocA im.ax1.Sm. wooden table 80 cm. high is placed 40cm. away from the ver— Fig. 2. Shielded Enclosure tical wall and 1.5m away from the side wall of the shielded room (Fig. 3). Line—Conducted Test Facility Sofar Electronics and EMCO Model 3725/2 (10kHz—30MHz) 50 /50 uH Line—Impedance Stabilization Networks (LISNs) are bonded to the shielded room (Flg. 4). The EUT is powered from the Solar LISN and the support equipment is powered from the EMCO LISN. Power to the LISNs are fil— tered by a high—current high—insertion loss Ray Proof power line filters (100dB 14kHz—10GHz). The purpose of the filter is to attenuate ambient sig— nal interference and this filter is also bonded to the shielded enclosure. All _ electrical cables are shielded by braided tinned copper zipper tubing with Fig. 3. Line—Conducted inner diameter of 1/2". If the EUT is a DC—powered device, power will be Emission Test Set—Up derived from the source power supply it normally will be powered from and this supply lines will be connected to the Solar LISN. LISN schematic dia— gram is shown in Figure 5. All interconnecting cables more than 1 meter were shortened by non—inductive bundling (serpentine fashion) to a 1—meter length. Sufficient time for the EUT, support equipment, and test equipment was allowed in order for them to warm up to their normal operating condi— tion. The RF output of the LISN was connected to the spectrum analyzer to determine the frequency producing the maximum EME from the EUT. The Fig. 4. Wooden Table & spectrum was scanned from 450 kHz to 30 MHz with 20 msec sweep time. Bonded LISNs The frequency producing the maximum level was reexamined using EMI/ Field Intensity Meter and Quasi—Peak adapter. The detector function was set to CISPR quasi—peak mode. The bandwidth of the receiver was set to 10 kHz. The EUT, support equipment, and interconnecting cables were ar— ranged and manipulated to maximize each EME emission. Each emission was maximized by: switching power lines; varying the mode of operation or resolution, clock or data exchange speed; scrolling H pattern to the EUT and/or support equipment, and powering the monitor from the floor mounted outlet box and the computer aux AC outlet, if applicable; which— Fig. 5. LISN Schematic ever determined the worst—case emission. Photographs of the worst—case Diagram emission can be seen in Appendix C. Each EME reported was calibrated us— ing the HP8640B signal generator. © 1999 PCTEST Lab 15" Color Monitor Model: 523X 4 DAEWOO FCC ID: CSF7NFCMCS23X

Test Report S/N: B.990312167.C5F FCC Class B Test Dates: March 16—17, 1999 Certification Radiated Emissions Preliminary measurements were made indoors at 1 meter using broadband antennas, broadband amplifier, and spectrum analyzer to determine the fre— quency producing the maximum EME. Appropriate precaution was taken to ensure that all EME from the EUT were maximized and investigated. The Fig. 6. 3—Meter Test Site system configuration, clock speed, mode of operation or video resolution, turntable azimuth with respect to the antenna were noted for each fre— "Tesr ; EQUIPMENT quency found. The spectrum was scanned from 30 to 200 MHz using bi— AREA _ conical antenna and 200 to 1000 MHz using log—spiral antenna. Above 1 GHz, linearly polarized double ridge horn antennas are used. Final measurements were made outdoors at 3—meter test range using | Roberts"" Dipole antennas or horn—antenna (see Figure 6). The test equip— _ ment was placed on a wooden and plastic bench situated on a 1.5 x 2 meter OUTDOOR 3 METER TEST S[TE 9 m _ area adjacent to the measurement area (see Figure 7). Sufficient time for the Fig. 7. Dimensions of EUT, support equipment, and test equipment was allowed in order for them Outdoor Test Site to warm up to their normal operating condition. Each frequency found dur— ing pre—scan measurements was re—examined and investigated using EMI/Field Intensity Meter and Quasi—Peak Adapter. The detector function was set to CISPR quasi—peak mode and the bandwidth of the receiver was set to 100 kHz or 1 MHz depending on the frequency or type of signal. The half—wave dipole antenna was tuned to the frequency found during pre— liminary radiated measurements. The EUT, support equipment and intercon— necting cables were re—configured to the set—up producing the maximum emission for the frequency and were placed on top of a 0.8—meter high non— Fig. 8. Turntable and System metallic 1 x 1.5 meter table (see Figure 8). The EUT, support equipment, Setup and interconnecting cables were re—arranged and manipulated to maximize each EME emission. The turntable containing the system was rotated; the an— tenna height was varied 1 to 4 meters and stopped at the azimuth or height producing the maximum emission. Each emission was maximized by: vary— ing the mode of operation or resolution; clock or data exchange speed; SITfs STH2% 287\ scrolling H pattern to the EUT and/or support equipment, and powering the monitor from the floor mounted outlet box and the computer aux AC outlet, if applicable; and changing the polarity of the antenna, whichever deter— an lc gn qon pan ant 100 70 1000 mined the worst—case emission. Photographs of the worst—case emission can FREDUENCY: (MHZ) be seen in Appendix C. Each EME reported was calibrated using the Fig. 9. Normalized Site HP8640B signal generator. The Theoretical Normalized Site Attenuation Attenuation Curves (H&V) Curves for both horizontal and vertical polarization are shown in Figure 9. © 1999 PCTEST Lab 15" Color Monitor Model: 523X 5 DAEWOO FCC ID: CSF7ZNFCMCS23X

Test Report S/N: B.990312167.C5F FCC Class B Test Dates: March 16—17, 1999 Certification Support Equipment Used 1. DAEWOO Monitor (EUT) FCC ID: C5F7ZNFCMCS523X S/N: Pre—production 1.8 m. unshielded AC power cord 1.5 m. shielded D—Sub cable with two ferrites 2. DAEWOO Desktop PC FCC ID: DTSCD520 S/N: 7069602967 1.8 m. unshielded AC power cord Number 9 PCI Video Card FCC DoC Model: Revolution 3D LG Electronics Int. CD—ROM FCC ID: BEJCRD—8160B S/N: 704ZB34235 3. HP ThinkJet Printer FCC 1D: BS46XU2225C S/N: 2522540719 1.8 m. unshielded AC power cord 1.0 m. shielded D—Sub cable (bundled) 4. LOGITECH Mouse FCC ID: DZL211029 S/N: LZA71523669 2.0 m. shielded cable 5. DAEWOO Keyboard FCC ID: ESX5R5BTC—5339R—O0 S/N: 90010021 1.6 m. shielded cable 6. EPSON Modem FCC ID: BKM552C202A S/N: 010289 1.8 m. unshielded DC power cord 1.2 m. shielded D—Sub cable Fig. 10. System Setup. (See "Appendix C — Test Photographs" for actual system setup.) © 1999 PCTEST Lab 15" Color Monitor Model: 523X 6 DAEWOO FCC ID: CSF7NFCMCS23X

Test Report S/N: B.990312167.C5F FCC Class B Test Dates: March 16—17, 1999 Certification Test Data Conducted Emissions sock (See Data under PLOTS — Next Pages) NOTES: 1. All video modes and resolutions were investigated and the worst—case emissions are reported. 2. The limit for Class B device is 250 V from 450kHz to 30MHz. 3. line A = Phase Line B = Neutral 4. Deviations to the Specifications: None * All readings are calibrated by HP8640B signal generator with accuracy traceable to the National Institute of Standards and Technology (formerly NBS). ** Measurements using CISPR quastpeak mode © 1999 PCTEST Lab 15" Color Monitor Model: 523X 7 DAEWOO FCC ID: CSF7NFCMCS23X

Test Report S/N: B.990312167.C5F FCC Class B Test Dates: March 16—17, 1999 Certification Test Data Radiated Emissions aociois Freq. Level* AFCL** L POL Height Azimuth FIS Margin*** (MHz) (dBm) (dB) (HAV) (m) (° angle) (uV/m) (dB) 48.3 — 77.8 2.8 H 2.9 20 39.8 — 8.0 120.2 — 79.0 11.5 V 2.2 90 94.4 — 4.0 365.8 — 88.2 22.7 l H 1.4 170 118.9 —4.5 382.1 — 89.2 23.2 [ V 1.4 180 112.2 —5.0 398.3 — 88.5 23.7 V 1.3 180 128.8 — 3.8 414.8 — 88.6 24.1 V 1.2 200 133.4 — 3.5 430.6 — 90.2 24.4 H 1.2 [ 260 \F 114.8 —4.8 447.9 — 92.4 24.9 V 1.2 180 94.4 — 6.5 }_‘659.6 — 95.6 i 29.4 H 11 200 109.7 — 5.2 Table 1. Radiated Measurements at 3—meters. 1024 x 768 Non—interlaced @ 48kHz/60Hz £ NoTEs: E 1. All video modes and resolutions were investigated and the _ worst—case emissions are reported. & 2. The radiated limits are shown on Figure 11. Above 1GHz & the limit is 5004. V/m. The EUT was tested up to 2 GHz and no i~ significant emission was found. _G 3o so 70 100 200 200 500 700 1000 & is FREQUENCY (MH=2> Fig. 11. Limits at 3 meters * All readings are calibrated by HP8640B signal generator with accuracy traceable to the National Institute of Standards and Technology (formerly NBS). ** AFCL = Antenna Factor (Roberts®" dipole) and Cable Loss (30 ft. RG58C/U). *** Measurements using CISPR quasipeak mode. Above 16Hz, peak detector function mode is used using a resolution bandwidth of 1MHz and a video bandwidth of 1MHz. The peak level complies with the averagelimit. Peak mode is used with linearly polarized ho antenna and low—loss microwave cable. © 1999 PCTEST Lab 15" Color Monitor Model: 523X 8 DAEWOO FCC ID: CSF7NFCMCS23X

Test Report S/N: B.990312167.C5F FCC Class B Test Dates: March 16—17, 1999 Certification Sample Calculations dB uV = 20 log 10 ( uV/m) dB uV =dBm + 107 EX. 1. @ 4.477 MHz Class B limit = 250 uV =47.96 dBuV Reading = —73.6 dBm (calibrated level) convert to dbuV =—73.6 + 107 = 33.4 dBuV 10 320 = 46.8 uV Margin = 33.4 — 47.96 =—14.56 18.6 dB below limit EX. 2. @ 235.8 MHz Class B limit = 200 uV/m = 46 dBuV/m Reading =—82.8 dBm (calibrated level) convert to dBuV/m =—82.8 + 107 = 24.2 dBuV/m Antenna factor + Cable Loss = 18.1 dB Total = 42.3 dBuV/m Margin = 42.3 — 46.0 =—3.7 3.7 dB below the limit © 1999 PCTEST Lab 15" Color Monitor Model: 523X DAEWOO FCC ID: CSF7NFCMCS23X

Test Report S/N: B.990312167.C5F FCC Class B Test Dates: March 16—17, 1999 Certification Accuracy of Measurement The measurement uncertainties stated were calculated in accordance with the requirements of NIST Technical Note 1297 and NIS 81 (1994). Contribution Probability Distribution Uncertainty (+/— dB) (Line Conducted) 9kHz—150MHz 150—30 MHz Receiver specification Rectangular 1.5 1.5 LISN coupling specification Rectangular 1.5 1.5 _ Cable and input attenuator calibration Normal (k=2) 0.3 0.5 Mismatch: Receiver VRC 14=0.03 LISN VRC ‘r=0.8 (9 kHz) 0.2 (30 MHz) U—Shaped 0.2 0.35 Uncertainty limits 20Log(1 +/—1 j I‘r) System repeatability Std. deviation 0.2 0.05 Repeatablifity of EUT — — Combined standard uncertainty Normal 1.26 1.30 Expanded uncertainty Normal (k=2) 2.5 2.6 Calculations for 150 kHz to 30 MHz: [’“”— 1.5+1.5 70.5 70.05 3 uc(y)= ZU?’ (y) =+/—\/——3+(—2)2+'—2*+O.352=+/—1. 298dB i1 U=2U(y)=#—2.6dB Contribution Probability Distribution Uncertainties (+/—dB) (Radiated Emissions} 3 m 10 m Ambient Signals — — Antenna factor Calibration Normal (k=2) +/— 1.0 +/— 1.0 Cable loss Calibration Normal (k=2) +/— 0.5 +/— 0.5 Receiver specification Rectangular +/— 1.5 +/—1.5 Antenna directivit Rectangular +0.5/—0 +0.5 Antenna factor variaton with height Rectangular +/— 2.0 +/— 0.5 [ Antenna phase centre variation Rectangular 0.0 +/— 0.2 Antenna factor frequency interpolation Rectangular +/— 0.25 +/— 0.25 Measurement distance variation Rectangular +/—0.6 +/— 0.4 Site imperfections Rectangutar +/— 2.0 +/— 2.0 Mismatch: Receiver VRC I‘1= 0.2 + 1.1 Antenna VRC I‘r = 0.67 (Bi) 0.3 (Lp) U—Shaped +/— 0.5 Uncertainty limits 20Log(1+/— T1 ‘R) —1.25 System repeatability Std. Deviation +/— 0.5 +/— 0.5 Repeatability of EUT — — Combined Standard uncertainty Normal +2.19/—2.21 +1.74/—1.72 Expanded uncertainty U Normal (k=2) +4.38 / —4.42 +3.48 / —3.44 Calculations for 3m biconical antenna. Coverage factor of k=2 will ensure that the level of confi— dence will be approximately 95%, therefore: U = 2ucly) = 2 x +/— 2.19 = +/—4.38 dB © 1999 PCTEST Lab 15" Color Monitor Model: 523X 10 DAEWOO FCC ID: CSF7NFCMCS23X

Test Report S/N: B.990312167.C5F FCC Class B Test Dates: March 16—17, 1999 Certification Test Equipment Type Model Cal. Due Date S/N Microwave Spectrum Analyzer HP8566B (100Hz—220H2z) 08/15/99 3638A08713 Microwave Spectrum Analyzer HP8566B (100HKz—22GHz) 04/17/99 2542411898 Spectrum Analyzer/Tracking Gen. HP8591A (100Hz—1.8GHz) 08/10/99 3144402458 Signal Generator_ HP8640B {500Hz—1GHz) 08/09/99 2232A19558 Signal Generator HPB640B (500Hz—1GHz) 08/09/99 1851409816 Signal Generator Rohde & Schwarz (0.1—1000MHz) 09/11/99 894215/012 Ailtech/Eaton Receiver NM37/57A—SL (30—1000MHz) 04/12/99 0792—03271 Ailtech/Eaton Receiver NM37/57A (30—1000MHz) 03/11/99 0805—03334 Ailtech/Eaton Receiver NM17/27A (0.1—32MH2z) 09/17/99 0608—03241 Quasi—Peak Adapter HPB5650A 08/15/99 2043400301 Ailtech/Eaton Adapter CCA—7 CISPR/ANSI! QP Adapter 03/11/00 0194—04082 RG58 Coax Test Cable No. 167 n/a Harmonic/Flicker Test System HP 6841A (IEC 555—2/3) 3531A00115 Broadband Amplifier (2) HPB447D 1145A00470, 193703348 Broadband Amplifier HPBA447F 2443003784 Transient Limiter HP11947A (9kHz—200MHz) 2820A00300 Horn Antenna EMCO Model 3115 (1—18GHz) 9704—5182 Horn Antenna EMCO Model 3115 (1—18GHz) 9205—3874 Horn Antenna EMCO Model 3116 {18—406Hz) 9203—2178 Biconical Antenna (4) Eaton 94455/Eaton 94455—1/Singer 94455—1/Compliance Design 1295, 1332, 0355 Log—Spiral Antenna (3) Ailtech/Eaton 93490—1 0608, 1103, 1104 Roberts Dipoles Compliance Design (1 set} Ailtech Dipoles DM—105A (1 set) 33448—111 EMCO LISN 3816/2 1079 EMCO LISN 3816/2 1077 EMCO LISN 3725/2 2009 Microwave Preamplifier 400B Gain HP83017A (0.5—26.5GHz) 3123400181 Microwave Cables MicroCoax (1.0—26.56GHz) Ailtech/Eaton Receiver NM37/57A—SL 0792—03271 Spectrum Analyzer HP8594A 3051400187 Spectrum Analyzer (2) HPB591A 3034A01395, 310802053 Modulation Analyzer HPB901A 2432403467 NTSC Pattern Generator Leader 408 0377433 Noise Figure Meter HP 8970B 3106A02189 Noise Figure Meter Ailtech 7510 TE31700 Noise Generator Ailtech 7010 1473 Microwave Survey Meter Holaday Model 1501 (2.450GHz) 80931 Gateway Thermometer Extech Instruments 421305 426966 Attenuator HP 8495A (0—70dB) DC—4GHz Bi—Directional Coux Coupler Narda 3020A (50—1000MHz) Shielded Screen Room RF Lindgren Model 26—2/2—0 6710 (PCT270) Shielded Semi—Anechoic Chamber Ray Proof Model S81 R2437 (PCT278) Enviromental Chamber Associated Systems Model 1025 (Temperature/Humidity) PCT285 * Calibration traceable to the National Institute of Standards and Technology (NIST}. © 1999 PCTEST Lab 15" Color Monitor Model: 523X 11 DAEWOO FCC ID: CSF7NFCMCS23X

Test Report S/N: B.990312167.C5F FCC Class B Test Dates: March 16—17, 1999 Certification Test Software Used 10 CLS:COLOR 7,0 20 FOR I = 1 TO 80 30 PRINT "H"; 40 NEXT I 50 FOR K= 1 TO 25 60 LPRINT "H"; 70 NEXT K 80 OPEN "COM1:1200,N,8,1,CS0,D50" FOR OUTPUT AS #1 90 PRINT#1,"*ATDT,0123456789" 100 CLOSE:GOTO 20 NOTE: This is a sample of the basic program used during the test. However, during test— ing a different software program may be used; whichever determines the worst— case condition. In addition, the program used also depends on the number and type of devices being tested. Actual program used is the EMI test program provided by DAEWOO. All video modes (1024x768, 800x600, 640x480 Non—interlaced) were investigated and tested in the Windows environment. © 1999 PCTEST Lab 15" Color Monitor Model: 523X 12 DAEWOO FCC ID: CSF7NFCMCS23X

Test Report S/N: B.990312167.C5F FCC Class B Test Dates: March 16—17, 1999 Certification Recommendation/Conclusion The data collected shows that the Daewoo Electronics Co., Ltd. Model: 523X 15—inch Color Monitor FCC ID: C5FZNFCMCS523X complies with §§ 15.107 and 15.109 of the FCC Rules. The highest emission observed with a minimum margin to the speci— fications was at 0.566 MHz for conducted emissions with a margin of 7.69 dB, and at 414.8 MHz for radiated emissions with a margin of 3.5 dB. © 1999 PCTEST Lab 15" Color Monitor Model: 523X 13 DAEWOO FCC ID: CSF7NFCMCS23X


Document Created: 1999-03-25 11:20:09
Document Modified: 1999-03-25 11:20:09
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