MSI MS-9652 Bedienungsanleitung Seite 1

No.5-22, Ruei-Shu Valley, Ruei-Ping Tsuen Lin Kou Shiang, Taipei 244 Taiwan, R.O.C. TEL:+886-2-8601-3788 FAX:+886-2-8601-3789 Email:service@quiete

Report No： 088213R-ITCEP07V04 Page: 7 of 131 1. General Information 1.1. EUT Description Product Name Notebook Trade Name MSI Model No. MS-16

Report No： 088213R-ITCEP07V04 Page: 97 of 131 9.6. Test Result Product Notebook Test Item Radiated susceptibility Test Mode Mode 1 Date of Te

Report No： 088213R-ITCEP07V04 Page: 98 of 131 Product Notebook Test Item Radiated susceptibility Test Mode Mode 2 Date of Test 2008/08/27

Report No： 088213R-ITCEP07V04 Page: 99 of 131 9.7. Test Photograph Test Mode : Mode 1 Description : Radiated Susceptibility Test Setup Test Mode

Report No： 088213R-ITCEP07V04 Page: 100 of 131 10. Electrical Fast Transient/Burst 10.1. Test Specification According to Standard : IEC 61000-4-

Report No： 088213R-ITCEP07V04 Page: 101 of 131 10.4. Test Procedure The EUT is placed on a table that is 0.8 meter height. A ground reference pla

Report No： 088213R-ITCEP07V04 Page: 102 of 131 10.6. Test Result Product Notebook Test Item Electrical fast transient/burst Test Mode Mode 1

Report No： 088213R-ITCEP07V04 Page: 103 of 131 Product Notebook Test Item Electrical fast transient/burst Test Mode Mode 2 Date of Test 200

Report No： 088213R-ITCEP07V04 Page: 104 of 131 10.7. Test Photograph Test Mode : Mode 1 Description : EFT/B Test Setup Test Mode : Mode 1 Desc

Report No： 088213R-ITCEP07V04 Page: 105 of 131 Test Mode : Mode 2 Description : EFT/B Test Setup Test Mode : Mode 2 Description : EFT/B Test S

Report No： 088213R-ITCEP07V04 Page: 106 of 131 11. Surge 11.1. Test Specification According to Standard : IEC 61000-4-5 11.2. Test Setup 11

Report No： 088213R-ITCEP07V04 Page: 8 of 131 Keyparts List ITEM Vendor M/N P8400/2.26G QZNM/2.4G CPU INTEL T9400/2.53 N156B3-L02 (15.6") C

Report No： 088213R-ITCEP07V04 Page: 107 of 131 11.4. Test Procedure The EUT and its load are placed on a table that is 0.8 meter above a metal gr

Report No： 088213R-ITCEP07V04 Page: 108 of 131 11.6. Test Result Product Notebook Test Item Surge Test Mode Mode 1 Date of Test 2008/08/27

Report No： 088213R-ITCEP07V04 Page: 109 of 131 Product Notebook Test Item Surge Test Mode Mode 2 Date of Test 2008/08/27 Test Site No.6 Sh

Report No： 088213R-ITCEP07V04 Page: 110 of 131 11.7. Test Photograph Test Mode : Mode 1 Description : SURGE Test Setup Test Mode : Mode 2 De

Report No： 088213R-ITCEP07V04 Page: 111 of 131 12. Conducted Susceptibility 12.1. Test Specification According to Standard : IEC 61000-4-6 12.2

Report No： 088213R-ITCEP07V04 Page: 112 of 131 12.3. Limit Item Environmental Phenomena Units Test Specification Performance Criteria Signal Por

Report No： 088213R-ITCEP07V04 Page: 113 of 131 12.6. Test Result Product Notebook Test Item Conducted susceptibility Test Mode Mode 1 Date o

Report No： 088213R-ITCEP07V04 Page: 114 of 131 Product Notebook Test Item Conducted susceptibility Test Mode Mode 2 Date of Test 2008/08/27

Report No： 088213R-ITCEP07V04 Page: 115 of 131 12.7. Test Photograph Test Mode : Mode 1 Description : Conducted Susceptibility Test Setup Test

Report No： 088213R-ITCEP07V04 Page: 116 of 131 Test Mode : Mode 2 Description : Conducted Susceptibility Test Setup Test Mode : Mode 2 Descript

Report No： 088213R-ITCEP07V04 Page: 9 of 131 LI SHIN LSE0202C1990 Adapter DELTA ADP-90SB BB Sumida IN1408/T-LF Inverter SAMPO YIVNMS0018D11-B

Report No： 088213R-ITCEP07V04 Page: 117 of 131 13. Power Frequency Magnetic Field 13.1. Test Specification According to Standard : IEC 61000-4-8

Report No： 088213R-ITCEP07V04 Page: 118 of 131 13.6. Test Result Product Notebook Test Item Power frequency magnetic field Test Mode Mode 1

Report No： 088213R-ITCEP07V04 Page: 119 of 131 Product Notebook Test Item Power frequency magnetic field Test Mode Mode 2 Date of Test 2008

Report No： 088213R-ITCEP07V04 Page: 120 of 131 13.7. Test Photograph Test Mode : Mode 1 Description : Power Frequency Magnetic Field Test Setu

Report No： 088213R-ITCEP07V04 Page: 121 of 131 14. Voltage Dips and Interruption 14.1. Test Specification According to Standard : IEC 61000-4-11

Report No： 088213R-ITCEP07V04 Page: 122 of 131 14.4. Test Procedure The EUT and its load are placed on a table which is 0.8 meter above a metal g

Report No： 088213R-ITCEP07V04 Page: 123 of 131 14.6. Test Result Product Notebook Test Item Voltage dips and interruption Test Mode Mode 1 D

Report No： 088213R-ITCEP07V04 Page: 124 of 131 Product Notebook Test Item Voltage dips and interruption Test Mode Mode 2 Date of Test 2008/0

Report No： 088213R-ITCEP07V04 Page: 125 of 131 14.7. Test Photograph Test Mode : Mode 1 Description : Voltage Dips Test Setup Test Mode : Mo

Report No： 088213R-ITCEP07V04 Page: 126 of 131 15. Attachment  EUT Photograph (1) EUT Photo (2) EUT Photo

Report No： 088213R-ITCEP07V04 Page: 10 of 131 1.2. Mode of Operation QuieTek has verified the construction and function in typical operation. All

Report No： 088213R-ITCEP07V04 Page: 127 of 131 (3) EUT Photo (4) EUT Photo

Report No： 088213R-ITCEP07V04 Page: 128 of 131 (5) EUT Photo (6) EUT Photo

Report No： 088213R-ITCEP07V04 Page: 129 of 131 (7) EUT Photo (8) EUT Photo

Report No： 088213R-ITCEP07V04 Page: 130 of 131 (9) EUT Photo (10) EUT Photo

Report No： 088213R-ITCEP07V04 Page: 131 of 131 (11) EUT Photo (12) EUT Photo

Report No： 088213R-ITCEP07V04 Page: 11 of 131 ITEM MODE1 MODE2 CPU INTEL T9400 / 2.53GHz INTEL QZNM / 2.4GHz Display/Resolution LCD+CRT/1366*7

Report No： 088213R-ITCEP07V04 Page: 12 of 131 ITEM MODE5 MODE6 CPU INTEL QZNM/2.4GHz INTEL P8400/2.26GHz Display/Resolution LCD+CRT/1366*768/6

Report No： 088213R-ITCEP07V04 Page: 13 of 131 ITEM MODE9 MODE10 CPU INTEL P8400/2.26GHz INTEL T9400/2.53GHz Display/Resolution LCD+CRT/1366*768/

Report No： 088213R-ITCEP07V04 Page: 14 of 131 ITEM MODE13 MODE14 CPU INTEL T9400/2.53GHz INTEL QZNM/2.4GHz Display/Resolution LCD+CRT/1366*768/6

Report No： 088213R-ITCEP07V04 Page: 15 of 131 1.3. Tested System Details The types for all equipments, plus descriptions of all cables used in the

Report No： 088213R-ITCEP07V04 Page: 16 of 131 1.4. Configuration of Tested System Connection Diagram Signal Cable Type Signal cable Description

Test Report Product Name：Notebook Model No. ：MS-1674, EX620 Applicant ： MICRO-STAR INT’L Co., LTD. Address ： No. 69, Li-De St., Jun

Report No： 088213R-ITCEP07V04 Page: 17 of 131 1.5. EUT Exercise Software 1 Setup the EUT and simulators as shown on 1.4. 2 Turn on the power of

Report No： 088213R-ITCEP07V04 Page: 18 of 131 2. Technical Test 2.1. Summary of Test Result No deviations from the test standards Deviatio

Report No： 088213R-ITCEP07V04 Page: 19 of 131 2.2. List of Test Equipment Conducted Emission / SR1 Instrument Manufacturer Type No. Serial No

Report No： 088213R-ITCEP07V04 Page: 20 of 131 Electrostatic Discharge / SR3 Instrument Manufacturer Type No. Serial No Cal. Date ESD simulato

Report No： 088213R-ITCEP07V04 Page: 21 of 131 Voltage dips and interruption / SR6 Instrument Manufacturer Type No. Serial No Cal. Date EMC im

Report No： 088213R-ITCEP07V04 Page: 22 of 131 2.3. Measurement Uncertainty Conducted Emission The measurement uncertainty is evaluated as ± 2.26

Report No： 088213R-ITCEP07V04 Page: 23 of 131 Conducted susceptibility As what is concluded in the document from Note2 of clause 5.4.6.2 of ISO/IE

Report No： 088213R-ITCEP07V04 Page: 24 of 131 2.4. Test Environment Performed Item Items Required Actual Temperature (C) 15-35 25 Conducted

Report No： 088213R-ITCEP07V04 Page: 25 of 131 3. Conducted Emission (Main Terminals) 3.1. Test Specification According to EMC Standard : EN 5502

Report No： 088213R-ITCEP07V04 Page: 26 of 131 3.4. Test Procedure The EUT and simulators are connected to the main power through a line impedance

Declaration of Conformity The followin g product is herewith confirmed to comply with the requirement s set out in the Council Directive on the

Report No： 088213R-ITCEP07V04 Page: 27 of 131 3.6. Test Result Site : SR-1 Time : 2008/08/18 - 10:01 Limit : CISPR_B_00M_QP Margin : 10 EUT : No

Report No： 088213R-ITCEP07V04 Page: 28 of 131 Site : SR-1 Time : 2008/08/18 - 10:04 Limit : CISPR_B_00M_QP Margin : 0 EUT : Notebook Probe : EN

Report No： 088213R-ITCEP07V04 Page: 29 of 131 Site : SR-1 Time : 2008/08/18 - 10:04 Limit : CISPR_B_00M_AV Margin : 0 EUT : Notebook Probe : EN

Report No： 088213R-ITCEP07V04 Page: 30 of 131 Site : SR-1 Time : 2008/08/18 - 10:05 Limit : CISPR_B_00M_QP Margin : 10 EUT : Notebook Probe : E

Report No： 088213R-ITCEP07V04 Page: 31 of 131 Site : SR-1 Time : 2008/08/18 - 10:07 Limit : CISPR_B_00M_QP Margin : 0 EUT : Notebook Probe : EN

Report No： 088213R-ITCEP07V04 Page: 32 of 131 Site : SR-1 Time : 2008/08/18 - 10:07 Limit : CISPR_B_00M_AV Margin : 0 EUT : Notebook Probe : EN

Report No： 088213R-ITCEP07V04 Page: 33 of 131 Site : SR-1 Time : 2008/08/18 - 11:34 Limit : CISPR_B_00M_QP Margin : 10 EUT : Notebook Probe : E

Report No： 088213R-ITCEP07V04 Page: 34 of 131 Site : SR-1 Time : 2008/08/18 - 11:35 Limit : CISPR_B_00M_QP Margin : 0 EUT : Notebook Probe : EN

Report No： 088213R-ITCEP07V04 Page: 35 of 131 Site : SR-1 Time : 2008/08/18 - 11:35 Limit : CISPR_B_00M_AV Margin : 0 EUT : Notebook Probe : EN

Report No： 088213R-ITCEP07V04 Page: 36 of 131 Site : SR-1 Time : 2008/08/18 - 11:36 Limit : CISPR_B_00M_QP Margin : 10 EUT : Notebook Probe : E

QuieTek Corporation / No.5-22, Ruei-Shu Valley, Ruei-Ping Tsuen Lin Kou Shiang, Taipei 244 Taiwan, R.O.C. Tel: 886-2-8601-3788, Fax: 886-2-8601

Report No： 088213R-ITCEP07V04 Page: 37 of 131 Site : SR-1 Time : 2008/08/18 - 11:37 Limit : CISPR_B_00M_QP Margin : 0 EUT : Notebook Probe : EN

Report No： 088213R-ITCEP07V04 Page: 38 of 131 Site : SR-1 Time : 2008/08/18 - 11:37 Limit : CISPR_B_00M_AV Margin : 0 EUT : Notebook Probe : EN

Report No： 088213R-ITCEP07V04 Page: 39 of 131 3.7. Test Photograph Test Mode : Mode 1 Description : Front View of Conducted Test Test Mode

Report No： 088213R-ITCEP07V04 Page: 40 of 131 Test Mode : Mode 2 Description : Front View of Conducted Test Test Mode : Mode 2 Descriptio

Report No： 088213R-ITCEP07V04 Page: 41 of 131 4. Conducted Emissions (Telecommunication Ports) 4.1. Test Specification According to EMC Standard

Report No： 088213R-ITCEP07V04 Page: 42 of 131 4.4. Test Procedure Telecommunication Port: The mains voltage shall be supplied to the EUT via the L

Report No： 088213R-ITCEP07V04 Page: 43 of 131 4.6. Test Result Site : SR-1 Time : 2008/08/18 - 10:24 Limit : ISN_Voltage_B_00M_QP Margin : 10 EU

Report No： 088213R-ITCEP07V04 Page: 44 of 131 Site : SR-1 Time : 2008/08/18 - 10:25 Limit : ISN_Voltage_B_00M_QP Margin : 0 EUT : Notebook Prob

Report No： 088213R-ITCEP07V04 Page: 45 of 131 Site : SR-1 Time : 2008/08/18 - 10:25 Limit : ISN_Voltage_B_00M_AV Margin : 0 EUT : Notebook Prob

Report No： 088213R-ITCEP07V04 Page: 46 of 131 Site : SR-1 Time : 2008/08/18 - 10:11 Limit : ISN_Voltage_B_00M_QP Margin : 10 EUT : Notebook Pro

Report No： 088213R-ITCEP07V04 Page: 2 of 131 Test Report Certification Issued Date : 2008/08/27 Report No. : 088213R-

Report No： 088213R-ITCEP07V04 Page: 47 of 131 Site : SR-1 Time : 2008/08/18 - 10:13 Limit : ISN_Voltage_B_00M_QP Margin : 0 EUT : Notebook Prob

Report No： 088213R-ITCEP07V04 Page: 48 of 131 Site : SR-1 Time : 2008/08/18 - 10:13 Limit : ISN_Voltage_B_00M_AV Margin : 0 EUT : Notebook Prob

Report No： 088213R-ITCEP07V04 Page: 49 of 131 Site : SR-1 Time : 2008/08/18 - 10:15 Limit : ISN_Voltage_B_00M_QP Margin : 10 EUT : Notebook Pro

Report No： 088213R-ITCEP07V04 Page: 50 of 131 Site : SR-1 Time : 2008/08/18 - 10:16 Limit : ISN_Voltage_B_00M_QP Margin : 0 EUT : Notebook Prob

Report No： 088213R-ITCEP07V04 Page: 51 of 131 Site : SR-1 Time : 2008/08/18 - 10:16 Limit : ISN_Voltage_B_00M_AV Margin : 0 EUT : Notebook Prob

Report No： 088213R-ITCEP07V04 Page: 52 of 131 Site : SR-1 Time : 2008/08/18 - 10:18 Limit : ISN_Voltage_B_00M_QP Margin : 10 EUT : Notebook Pro

Report No： 088213R-ITCEP07V04 Page: 53 of 131 Site : SR-1 Time : 2008/08/18 - 10:20 Limit : ISN_Voltage_B_00M_QP Margin : 0 EUT : Notebook Prob

Report No： 088213R-ITCEP07V04 Page: 54 of 131 Site : SR-1 Time : 2008/08/18 - 10:20 Limit : ISN_Voltage_B_00M_AV Margin : 0 EUT : Notebook Prob

Report No： 088213R-ITCEP07V04 Page: 55 of 131 Site : SR-1 Time : 2008/08/18 - 11:48 Limit : ISN_Voltage_B_00M_QP Margin : 10 EUT : Notebook Pr

Report No： 088213R-ITCEP07V04 Page: 56 of 131 Site : SR-1 Time : 2008/08/18 - 11:49 Limit : ISN_Voltage_B_00M_QP Margin : 0 EUT : Notebook Prob

Report No： 088213R-ITCEP07V04 Page: 3 of 131 Laboratory Information We , QuieTek Corporation, are an independent EMC and safety consultancy that wa

Report No： 088213R-ITCEP07V04 Page: 57 of 131 Site : SR-1 Time : 2008/08/18 - 11:49 Limit : ISN_Voltage_B_00M_AV Margin : 0 EUT : Notebook Prob

Report No： 088213R-ITCEP07V04 Page: 58 of 131 Site : SR-1 Time : 2008/08/18 - 11:46 Limit : ISN_Voltage_B_00M_QP Margin : 10 EUT : Notebook Pro

Report No： 088213R-ITCEP07V04 Page: 59 of 131 Site : SR-1 Time : 2008/08/18 - 11:47 Limit : ISN_Voltage_B_00M_QP Margin : 0 EUT : Notebook Prob

Report No： 088213R-ITCEP07V04 Page: 60 of 131 Site : SR-1 Time : 2008/08/18 - 11:47 Limit : ISN_Voltage_B_00M_AV Margin : 0 EUT : Notebook Prob

Report No： 088213R-ITCEP07V04 Page: 61 of 131 Site : SR-1 Time : 2008/08/18 - 11:44 Limit : ISN_Voltage_B_00M_QP Margin : 10 EUT : Notebook Pro

Report No： 088213R-ITCEP07V04 Page: 62 of 131 Site : SR-1 Time : 2008/08/18 - 11:45 Limit : ISN_Voltage_B_00M_QP Margin : 0 EUT : Notebook Prob

Report No： 088213R-ITCEP07V04 Page: 63 of 131 Site : SR-1 Time : 2008/08/18 - 11:45 Limit : ISN_Voltage_B_00M_AV Margin : 0 EUT : Notebook Prob

Report No： 088213R-ITCEP07V04 Page: 64 of 131 Site : SR-1 Time : 2008/08/18 - 11:42 Limit : ISN_Voltage_B_00M_QP Margin : 10 EUT : Notebook Pro

Report No： 088213R-ITCEP07V04 Page: 65 of 131 Site : SR-1 Time : 2008/08/18 - 11:43 Limit : ISN_Voltage_B_00M_QP Margin : 0 EUT : Notebook Prob

Report No： 088213R-ITCEP07V04 Page: 66 of 131 Site : SR-1 Time : 2008/08/18 - 11:43 Limit : ISN_Voltage_B_00M_AV Margin : 0 EUT : Notebook Prob

Report No： 088213R-ITCEP07V04 Page: 4 of 131 TABLE OF CONTENTS Description Page 1.

Report No： 088213R-ITCEP07V04 Page: 67 of 131 4.7. Test Photograph Test Mode : Mode 1 Description : Front View of ISN Test Test Mode : Mo

Report No： 088213R-ITCEP07V04 Page: 68 of 131 Test Mode : Mode 2 Description : Front View of ISN Test Test Mode : Mode 2 Description :

Report No： 088213R-ITCEP07V04 Page: 69 of 131 5. Radiated Emission 5.1. Test Specification According to EMC Standard : EN 55022 5.2. Test Setu

Report No： 088213R-ITCEP07V04 Page: 70 of 131 5.4. Test Procedure The EUT and its simulators are placed on a turn table which is 0.8 meter above g

Report No： 088213R-ITCEP07V04 Page: 71 of 131 5.6. Test Result Site : OATS-3 Time : 2008/08/20 - 05:25 Limit : CISPR_B_10M_QP Margin : 6 EUT : N

Report No： 088213R-ITCEP07V04 Page: 72 of 131 Site : OATS-3 Time : 2008/08/20 - 05:18 Limit : CISPR_B_10M_QP Margin : 6 EUT : Notebook Probe :

Report No： 088213R-ITCEP07V04 Page: 73 of 131 Site : OATS-3 Time : 2008/08/20 - 05:59 Limit : CISPR_B_10M_QP Margin : 6 EUT : Notebook Probe :

Report No： 088213R-ITCEP07V04 Page: 74 of 131 Site : OATS-3 Time : 2008/08/20 - 05:52 Limit : CISPR_B_10M_QP Margin : 6 EUT : Notebook Probe :

Report No： 088213R-ITCEP07V04 Page: 75 of 131 5.7. Test Photograph Test Mode : Mode 1 Description : Front View of Radiated Test Test Mode

Report No： 088213R-ITCEP07V04 Page: 76 of 131 Test Mode : Mode 2 Description : Front View of Radiated Test Test Mode : Mode 2 Descriptio

Report No： 088213R-ITCEP07V04 Page: 5 of 131 6.1. Test Specification ...

Report No： 088213R-ITCEP07V04 Page: 77 of 131 6. Harmonic Current Emission 6.1. Test Specification According to EMC Standard : EN 61000-3-2 6.2

Report No： 088213R-ITCEP07V04 Page: 78 of 131 (b) Limits of Class B Harmonics Currents For Class B equipment, the harmonic of the input current s

Report No： 088213R-ITCEP07V04 Page: 79 of 131 6.4. Test Procedure The EUT is supplied in series with power analyzer from a power source having the

Report No： 088213R-ITCEP07V04 Page: 80 of 131 6.6. Test Result Product Notebook Test Item Power Harmonics Test Mode Mode 1 Date of Test 2008

Report No： 088213R-ITCEP07V04 Page: 81 of 131 Test Result: Pass Source qualification: Normal THC(A): 0.00 I-THD(%): 0.00 PO

Report No： 088213R-ITCEP07V04 Page: 82 of 131 Product Notebook Test Item Power Harmonics Test Mode Mode 2 Date of Test 2008/08/27 Test Site

Report No： 088213R-ITCEP07V04 Page: 83 of 131 Test Result: Pass Source qualification: Normal THC(A): 0.13 I-THD(%): 47.88 P

Report No： 088213R-ITCEP07V04 Page: 84 of 131 6.7. Test Photograph Test Mode : Mode 1 Description : Power Harmonics Test Setup Test Mode

Report No： 088213R-ITCEP07V04 Page: 85 of 131 7. Voltage Fluctuation and Flicker 7.1. Test Specification According to EMC Standard : EN 61000-3

Report No： 088213R-ITCEP07V04 Page: 86 of 131 c) 7 ％ for equipment which is: － attended whilst in use (for example: hair dryers, vacuum cleaners,

Report No： 088213R-ITCEP07V04 Page: 6 of 131 10.7. Test Photograph ...

Report No： 088213R-ITCEP07V04 Page: 87 of 131 7.6. Test Result Product Notebook Test Item Voltage Fluctuation and Flicker Test Mode Mode 1 Da

Report No： 088213R-ITCEP07V04 Page: 88 of 131 Product Notebook Test Item Voltage Fluctuation and Flicker Test Mode Mode 2 Date of Test 2008/

Report No： 088213R-ITCEP07V04 Page: 89 of 131 7.7. Test Photograph Test Mode : Mode 1 Description : Flicker Test Setup Test Mode : Mode 2

Report No： 088213R-ITCEP07V04 Page: 90 of 131 8. Electrostatic Discharge 8.1. Test Specification According to Standard : IEC 61000-4-2 8.2. Tes

Report No： 088213R-ITCEP07V04 Page: 91 of 131 8.4. Test Procedure Direct application of discharges to the EUT: Contact discharge was applied only

Report No： 088213R-ITCEP07V04 Page: 92 of 131 8.6. Test Result Product Notebook Test Item Electrostatic Discharge Test Mode Mode 1 Date of Te

Report No： 088213R-ITCEP07V04 Page: 93 of 131 Product Notebook Test Item Electrostatic Discharge Test Mode Mode 2 Date of Test 2008/08/27 T

Report No： 088213R-ITCEP07V04 Page: 94 of 131 8.7. Test Photograph Test Mode : Mode 1 Description : ESD Test Setup Test Mode : Mode 2 Descr

Report No： 088213R-ITCEP07V04 Page: 95 of 131 9. Radiated Susceptibility 9.1. Test Specification According to Standard : IEC 61000-4-3 9.2. Test

Report No： 088213R-ITCEP07V04 Page: 96 of 131 9.4. Test Procedure The EUT and load, which are placed on a table that is 0.8 meter above ground, ar