6

FCC ID: JVP7257C

Test Report

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FCCID_75342

FCC ID: JVP7257C                                                                    fi


                                     EMC
                              TEST REPORT

                            REPORT NO. : F$7050802B
                            MODEL NO.      :7257€C    _
                            DATE OF TEST : Aug. 28, 1998




                  PREPARED FOR : ACER PERIPHERALS, INC. _ _

                  ADDRESS : 157, SHAN—YING ROAD, KWEISHAN,
                              TAOYUAN333, TAIWAN, R.O.C._




    PREPARED BY:            ADVANCE DATA TECHNOLOGY CORPORATION _

    NV&[&A@@                 12F, NO.1, SEC.4, NAN—KING EAST RD.,
    Accredited Laboratory
                            TAIPEI, TAIWAN, R.O.C.


   This test report consists of 14 pages in total. It may be duplicated completely for
   legal use with the allowance of the applicant. It shall not be reproduced except in
   full, without the written approval of our laboratory. It should not be used by the
   client to claim product endorsement by NVLAP or any agency of the U.S.
   government. The test result in the report only applies to the tested sample.


FCC ID: JVP7257C                                                                                            &



                                      TABLE OF CONTENTS



1. CERTIFICATION ..0.00000 00e eeeemernernereeneeernereernerneernernrereserverseerereeereveerreververeerecneeernnee 3

2. GENERAL INFORMATION .:.22.0.020.00 00e emermerrmeneerrreerrerererereerererereerrneeerenrerrnererneenenenn n en4

    2.1      GENERAL DESCRIPTION OF EUT ...2...0 00000 e ie ererenerernrrnennen en en enneneneneneennnes4
    2.2      DESCRIPTION OF SUPPORT UNITS 1)..20..00.0 00e evenenenennnvenvrneeserver ns enc en rnnes 5
    2.3      TEST METHODOLOGY AND CONFIGURATION ................000000mcmmmsmmermreees 5

3. TEST INSTRUMENTS 100200000000 rerrrrvrrerrrernrrnrrerrnersernerrnernereennsereeerneerreneeereerernennnnennenene 6

    3.1      TEST INSTRUMENTS (EMISSION) 1: 0000000000eev e rrrrerenrrnrnnrs en nenennesernec ns n en renne 6
    3.2      LIMITS OF CONDUCTED AND RADIATED EMISSION ......... ... 7

4. TEST RESULTS              =(EMISSION) .....)0000 0000 mrnmmmmermmenserrrereeererrernnnnenneeennceinernnernes 8

    4.1      RADIO DISTURBANCE .............00000me en e renrrererrrerrsernerneennserneernnnerenreeneeeenennnnennes 8
    4.2      EUT OPERATION CONDITION.:1,,.00..00.000000aemavesrrsrrervrerrrrreenersernecrrrnrereenreen nc ns 8
    4.3      TEST DATA OF CONDUCTED EMISSION ............0..000nisvemvererrnreermeenmrennnernerenes 9
    4.4      TEST DATA OF RADIATED EMISSION .......0..000.00en mm nereereen 10

5.. PHOTOGRAPHS OF THE TEST CONFIGURATION WITH MINIMUM MARGIN ....12

6. ATTACHMENT I —TECHNICAL DESCRIPTION OF EUT ,............ncccmemeeemerene 14


FCC ID: JVP7257C                                                                             &


1.                           CERTIFICATION

                                                                Issue Date: Aug. 31, 1998
     Product           :     COLOR MONITOR
     Trade Name        :     ACER
     Model No.         :     7257C
     Applicant         :     ACER PERIPHERALS, INC.
     Standard          :     FCC Part 15, Subpart B, Class B
                             ANSI €63.4—1992
                             CISPR 22:1993+A1+A2



     We hereby certify that one sample of the designation has been tested in our facility
     on Aug. 28, 1998.     The test record, data evaluation and Equipment Under Test
     (EUT) configurations represent herein are true and accurate representation of the
     measurements of the sample‘s EMC characteristics under the conditions herein
     specified.


     The test results show that the EUT as described in this report is in compliance with
     the Class B limits of conducted and radiated emission of applicable standards.




     TESTED BY:               l&          J sas—      _ Date:         ?/3//7?
                                 ( John Liao )


     CHECKED BY:                1           FA.,      , DATE:        FL/s/           @p
                                ( Ariel Hsich )


     APPROVED BY:          %/4 gz\                    . DATE:          Ts1          P#
                                    ( Mike Su )


                                                                                    [L           o

     ADVANCE DATA TECHNOLOGY CORPORATION                                  Nv [&{—Dp
                                                                         Accredited Laboratory


FCC ID: JVP7257C



2.   GENERAL INFORMATION

2.1 GENERAL DESCRIPTION OF EUT


          Product                    :     COLOR MONITOR
          Model No.                  :     7257C
          Power Supply Type          :     Switching
          Power Cord                 :     Nonshielded (1.8m)
          Data Cable                 :     Shielded (1.5m)



     Note: This report is prepared for Class II Permissive Change.         The main
           changes are as follows:


            1) Remove the original ferrite core on the RGB wires.
            2) Added a ferrite core on the video cable inside the monitor. The
                   original ferrite core outside the monitor is removed.
            3)     The original six ground wires, which are connected from the metal
                   cover covering the CRT board to chassis, are deducted to three ground
                   wires.
            4)     Added a ferrite core on the safety ground wire with three turns.
            5)     Added a ferrite core on the wires connected between CRT board and
                   main board.
            6) A piece of Aluminum plate added on the solder side of mainboard is
                   enlarged.


           The EUT is a 15" color monitor with resolution up to 1280x1024.


           The EUT was pretested with two power cords, shielded and nonshielded.
           During pretest, the highest emission levels were found using nonshielded
           power cord and therefore this nonshielded power cord was used in the final
           test.


           For more detailed features description, please refer to ATTACHMENT 1 —
           TECHNICAL DESCRIPTION OF EUT and User‘s Manual.


FCCID: JVP7257C
                                                                                         B
2.2 DESCRIPTION OF SUPPORT UNITS


   The EUT has been tested as an independent unit together with other necessary
   accessories or support units. The following support units or accessories are used
   to form representative test configuration during the tests.


   No\    Product       Brand       Model No.         FCC ID           1/O Cable
         PERSONAL                  VL SERIES 4]B94VECTRA50
    1                     HP                                     Nonshielded Power (1.8 m)
         COMPUTER                       5/100            OT

    2    |KEYBOARD|   FORWARD      FDA—104GA|      F4ZDA—104G       Shiclded Signal (1.4 mm}

                                                                    Shielded Signal (2.2 m)
    3     PRINTER         HP           2225C+      DSI6XU2225
                                                                 Nonshielded Power (1.9m)

                                                                     Shielded Signal (1.9m)
    4     MODEM         ACEEX            1414      IFAXDMI1414
                                                                 Nonshielded Power (1.2m)

    5     MOUSE        DEXIN           A2P800A     NIYA2P800A        Shielded Signal (1.5m)
    6    VGA CARD      GORDIA          DSV3365    LUT—DSV3365              N/A




2.3 TEST METHODOLOGY AND CONFIGURATION


   Both conducted and radiated testing were performed according to the procedures in
   ANSI €63.4: 1992.     Radiated testing was performed at an antenna to EUT distance
   of 10 m on an open areatest site.


   Please refer to the photos of test configuration in Item 5.


FCC ID: JVP7257C                                                                                  @

3.   TEST INSTRUMENTS

3.1 TEST INSTRUMENTS (EMISSION)

     RADIATED EMISSION MEASUREMENT
      Description & Manufacturer             Model No.          Serial No.      Calibrated until
     HP Spectrum Analyzer                       8590L         3544400941         Dec. 14, 1998
     HP Pre—Amplifier                           8447D         2944A08312         Sept. 10, 1998
     R&S Receiver                              ESVS10          844591/010        Sept. 23, 1998
     SCHWARZBECK Tunable                     VHA 9103           E101051
     ‘Dipole Antenna                         usa aros           Etoress__|_      N* °*
     CHASE BILOG Antenna                     CBL6111A             1500           Sept. 12, 1998
     EMCO Turn Table                           1060—04            1196                N/A
     EMCO Tower                                  1051             1264                N/A
     Open Field Test Site                       Site 1          ADT—RO1          Sept. 5, 1998
     Note: 1. The measurement uncertainty is less than +/— 34B, which is calculated
                     as per NAMA‘s document NIS81.
                 2. The calibration interval of the above test instruments is 12 months.
                     And the calibrations are traceable to NML/ROC and NIST/USA.




     CONDUCTED EMISSION MEASUREMENT
     Description & Manufacturer|            Model No.       Serial No.        Calibrated Until
     ROHDE & SCHWARZ Test
             .                                ESH3         893495/006          July 15, 1999
     Receiver
     ROHDE & SCHWARZ
               .                              EZM          893787/013          July 16, 1999
     Spectrum Monitor
     ROHDE & SCHWARZ
        l2       l       .                  ESH3—Z5        839135/006          Tuly 14, 1999
     Artificial Mains Network
     EMCO—L.LS.N.                            3825/2         9204—1964          July 14, 1999
     Shielded Room                            Site 2        ADT—CO2                N/A

     Note: 1. The measurement uncertainty is less than +/— 2.64B, which is calculated as
                     per NAMA‘s document NIS81.
                 2. The calibration interval of the above test instruments is 12 months.
                     And the calibrations are traceable to NML/ROC and NIST/USA.


FCC ID: JVP7257C                                                                          fi



3.2 LIMITS OF CONDUCTED AND RADIATED EMISSION

   LIMIT OF RADIATED EMISSION OF CISPR 22

         FREQUENCY              Class A (at 10m)         |__Class B (at 10m)
            (MHz)                    dBuV/m                  dBuV/m
           30—    230                     40                     30
          230 — 1000                      47                     37


   LIMIT OF RADIATED EMISSION OF FCC PART 15, SUBPART B FOR
   FREQUENCY ABOVE 1000 MHz

         FREQUENCY                  Class A (at 10m)                  Class B (at 3m)
            (MHz)                  uV/m         dBuV/m             uV/m        dBuV/m
          Above 1000                300           49.5                500        54.0


   Note:(1) The lower limit shall apply at the transition frequencies.
         (2) Emission level (dBuV/m) = 20 log Emission level (uV/m).
         (3) All emanation from a class A/B digital device or system, including any network
             of conductors and apparatus connected thereto, shall not exceed the level of
             field strengths specified above.


   LIMIT OF CONDUCTED EMISSION OF CISPR 22


         FREQUENCY                   Class A (dBuV)                   Class B (dBuV)
             (MHz)              Quasi—peak      Average         Quasi—peak|    Average
          0.15 — 0.5                 79            66            66 — 56        56 — 46
          0.50 — 5.0                 73            60                 56          46
          5.0 — 30.0                 73            60                 60          50


   Note: (1) The lower limit shall apply at the transition frequencies.
         (2) The limit decreases linearly with the logarithm of the frequency in the range
             0.15 to 0.50 MHz
         (3) All emanation from a class A/B digital device or system, including any network
             of conductors and apparatus connected thereto, shall not exceed the level of
             field strengths specified above.


FCC ID: JIVP7257C



4.     TEST RESULTS                (EMISSION)

4.1 RADIO DISTURBANCE


       Frequency Range                  :     0.15 — 30 MHz (Conducted Emission)
                                              30 — 1000 MHz (Radiated Emission)
       Input Voltage                    :     120 Vac, 60 Hz
       Temperature                      :     33 CC
       Humidity                         :     50 %
       Atmospheric Pressure             :     995 mbar


            TEST RESULT                                     Remarks
                             Minimum passing margin of conducted emission: —4.3 dB at 27.210 MHz

                             Minimum passing margin of radiated emission: —3.0 dB at 36.25 MHz

       Note: The EUT was pretested under the following resolution & horizontal
             synchronization speed mode:

                 & 1280 x 1024 (64 kHz)
                 & 1024 x 768 (69 kHz)
                 & 640 x 480 (31.5 kHz)
                The worst emission levels were found under 1280x1024 (64 kHz) and therefore
                the test data of only this mode is recorded.




4.2 EUT OPERATION CONDITION

             Turn on the power of all equipment.
     No:




             PC runs a test program to enable all functions.
             PC reads and writes messages from FDD and HDD.
     o fe




             PC sends "H" messages to monitor (EUT) and monitor displays "H" patterns on
             screen.
             PC sends "H" messages to modem.
     tn




             PC sends "H" messages to printer, and the printer prints them on paper.
             Repeat steps 3—7.


FCC ID: JVP7257C



4.3 TEST DATA OF CONDUCTED EMISSION

   EUT: COLOR MONITOR                                   MODEL: 7257C

   MODE: 1280x1024 (64 kHz)

   6 dB Bandwidth: 10 kHz

   TEST PERSONNEL: Iafiy\ L?a&


  Freq.       L Level          N Level             Limit                    Margin [dB (uV))

 [MHz]        [dB (uV))       {dB (uv)]          {4B (uv)]                  L                  N
              QP    AV        QP       AV        QP       AV        QP          AV     QP          AV
  0.256    38.90      —      39.60       —      61.54    |51.54]    —22.6        —     —21.9        —
  0.512    43.20      —      42.50       —      56.00    |146.00}   —12.8        —     —13.5        —
  0.574    41.00        —    42.30       —      56.00    146.00|    —15.0        —     —13.7        —
  6.104    30.30        —    30.70       —      60.00    150.00|    —29.7        —     —29.3        —
18.160    39.80         —    39.40       —      60.00    |50.00]    —20.2        —     —20.6        —
 27.210    51.70   (45.70|   50.60    |45.30|   60.00    150.00}    —8.3        —4.3   —9.4        —4.7

   Remarks:    1. "*"; Undetectable
               2. Q.P. and AV. are abbreviations of quasi—peak and average individually.
               3. "—": The Quasi—peak reading value also meets average limit and
                  measurement with the average detector is unnecessary.
               4. The emission levels of other frequencies were very low against the limit.
               5. Margin value = Emission level — Limit value


ADT CO.             Shielded Room 2                                                           28.   Aug   98   10; 22

CISPR 22                 CLASS B
                                                                               Report No. J&7e5ogo gfl
EUT:                  MODEL: 7267C
Op Cond:              1280X1024 64kHz
                                                                               Page   17—
Test
Comment:
        Spec:         LISN : L
                      FULL SYSTEM                                                                                      |
                                                                               Tested by MA L;m '
Fast    Scan    Settings    (3 Ranges)
J aeccece~— Frequencies ————~——————I1| <—=——=~—~~— Receiver Settings ———~——~——~—— 1
  Start              Stop                       Step        IF    BW     Detector   M—Time   Atten Preamp      Ophge
 150k               450K                        3k               10k       PK         ims    10dBLN OFF        6008
 450k                 SM                        3k               10k       PK         ims     10dBLN OFF       600B
   5M                30M                        3k               10k       PK         ims    10dBLN OFF        600B




dBuy             © mer               27.20900MHz            §2.2 dBuy
110 —



100 |—          —           |—




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                                                                      PAGE 1


ADT CO.        Shielded Room 2                                                              28.    Aug   98   10: 09

CISPR 22              CLASS B
                                                                              Report No. }:370pofoz2 & ,
EUT:             MODEL: 7257C
Op    Cond:      1280X1024 64kHz
                                                                              Page (~2
Test Spec:
Comment:
                 LISN : N
                 FULL SYSTEM
                                                                              Tested by Joln roo |
                                                                                                                       |

Fast Scan Settings (3 Ranges
| <—mn—————~ Frequenties ——————~———— |] <<c—c——~—~— Receiver Settings —————~—————— I
     Start      Stop             Step           IF   BW          Detector         M—Time   Atten    Preamp OpAge
 150k          450k                                  10k                 PK         ims    10d4BLN OFF        600B
 450k            SM                                  10k                 PK         1ms    10dBLN    OFF      604B
   5M           3OM                                  10k                 PK         1ms    10dBLN    OFF      600B




dBuv                        §76.00   KHz        43.9 dBuVy
110




100




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                      ~—


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                                                           PAGE 1i


FCCID: JVP7257C                                                                     &

4.4 TEST DATA OF RADIATED EMISSION

   EUT: COLOR MONITOR                               MODEL: 7257€

   MODE: 1280x1024 (64 kHz)

   ANTENNA: CHASE BILOG CBL6111A                    POLARITY: Horizontal

   DETECTOR FUNCTION: Quasi—peak                    6 dB BANDWIDTH: 120 kHz

   FREQUENCY RANGE: 30—1000 MHz                     MEASURED DISTANCE: 10 M


   TEST PERSONNEL: wr\ L:w\


   Frequency   Correction    Reading     Emission         Limit            Margin
                  Factor      Data        Level
   (MHz)          (dB/m)     (dBuV)      (dBuV/m)        (dBuV/m)           (dB)
     36.25         17.7        2.8         20.50    00   30.0 _       _ —9.5

     39.46         16.5        0.6         17.1            30.0            —12.9

     45. 40        13.7        7.0         20.7            30.0             —9.3

     54.43          9.4        8.5         17.9            30.0            A12.1

    115.69         14.2        5.4         19.6            30.0            —10.4

    192.01         12.4        8.4         20.8            30.0             —9.2

    203. 34        12.9       14.0         26.9            30.0             —3.1

    229.09         15.4        8.5         23.9            30.0             —6.1

   REMARKS:        1. Emission level (dBuV/m) = Correction Factor (dB/m)
                                                +Meter Reading (dBuV).
                  2. Correction Factor (dB/m) = Ant. Factor (dB/m)+Cable loss (dB)
                  3. The other emission levels were very low against the limit.
                  4. Margin value=Emission level — Limit value


ECC ID: JIVP7257C



   TEST DATA OF RADIATED EMISSION

   EUT: COLOR MONITOR                                   MODEL: 7257€ _
   MODE: 1280x1024 (64 kHz)
   ANTENNA: CHASE BILOG CBL6111A                        POLARITY: Vertical

   DETECTOR FUNCTION: Quasi—peak                        6 dB BANDWIDTH: 120 kHz

   FREQUENCY RANGE: 30—1000 MHz                         MEASURED DISTANCE: 10 M


   TEST PERSONNEL: :L?%\ )—-?a&\

   Frequency   Correction      Reading       Emission         TLimit          Margin:
                    Factor       Data         Level
   (MHz)            (dB/m)      (dBuV)       (dBuV/m)       (dBuV/m)           (dB)

      36.25          16.5        10.5          27.0 _           30.0           —3.0
      39. 48         15.2          9.0         24 .2            30.0           —5.8

      45. 41         13.1        13.2          26.3             30.0           —3.7

      54,41           9.3        14.9          24 .2            30.0           —5.8

     108.00          13.2        12.8          26.0             30.0           —4.0

     186.13          13.0          5.5         18.5             30.0          —11.5

     229 .11         15.3          5.8         21.1             30.0           —8.9


    REMARKS:         1. Emission level (dBuV/m) = Correction Factor (dB/m}
                                                 +Meter Reading (dBuV).
                     2. Correction Factor (dB/m)}= Ant. Factor (dB/m)+Cable loss (dB)
                     3. The other emission levels were very low against the limit.
                     4. Margin value = Emission level — Limit value


FCC ID: JVP7257C



6.   ATTACHMENT [—TECHNICAL DESCRIPTION OF EUT

     SPECIFICATIONS:

     * Picture Tube            Size: 15", diagonal
                               Dot Pitch: 0.28mm
                               Surface: AR, AS coating


     * Bandwidth               80 MHz

     * Maximum Viewable Size   13.7" diagonal


     * Power Supply            Input voltage: 90—264 Vac, 47—63 Hz
                               Power Consumption: 75 watts (max.)


     * Max. Resolution         1280x1024


     * Horizontal Frequency    30—70 kHz


     * Vertical Frequency      50—120 Hz


     * Dimensions              376mm(W) x 373mm(H) x 385mm (D)


     * Operating Conditions    Temperature: 5C ~40°C
                               Humidity: 20% to 90%


     * Storage Conditions      Temperature: 0°C to 60 °C
                               Humidity: 10% to 90%


     * Weight                  12.5 kg.



Document Created: 2001-05-12 00:55:36
Document Modified: 2001-05-12 00:55:36

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