Acoustic test report AU01+N01

Transcription

1 Customer Industriezeile inz Tel.: Fax: Acoustic test report AU01+N01 Favorit 5000 IM 04 Select The test result refer exclusively to the model tested. This report must not be copied without the written authorization by the lab. Registration number: DGA-P-224/95-03

2 Tel.: Fax: Accreditation: Registration number: DGA-P-224/95-03 Valid until Test aboratory: The technical accuracy is guaranteed through the quality management of the AU01+N01 2 / 17

3 Table of contents 1. Test regulation and standards Equipment under test Test specification Test result Summary AU01+N01 3 / 17

4 1. Test regulation and standards Referenced standards DIN EN ISO 7779: Measurement of airborne noise emitted by computer and business equipment. ISO 9296: 1988 RA-UZ 78: Declared noise emission values of computer and business equipment. Environmentally acceptable workstation computers. Including following tests Sound power level EN ISO 7779: 2001, Chapter 7 Sound pressure level EN ISO 7779: 2001, Chapter 8 Impulsive sound pressure levels and discrete tones EN ISO 7779: 2001, Annex D, E Methods for determination of sound power levels of equipment under essentially freefield conditions over a reflecting plane. Methods of measuring sound pressure levels at the operator and bystander position. Measurement of impulsive pressure levels and discrete tones at the operator position Noise emission values ISO 9296: 1988 Environmental symbol "Blauer Engel" RA-UZ 78: Requirements Environmental symbol "Blauer Engel" according to RA-UZ 78: Sound power level WAd for operating (ODD): Sound power level WAd for operating (HDD): Sound power level WAd for operation: (90% CPU workload): Sound power level WAd for operation: (idle mode) 52,0 db(a) 44,0 db(a) 48,0 db(a) 40,0 db(a) AU01+N01 4 / 17

5 2. Equipment under test Equipment description Product type: Model name: Favorit 5000 IM 04 Select Serial number: Manufacturer: Operational description of the EUT: ist of components Component Manufacturer Model No. Part No. Power supply FSP FSP350-60HHN Drives HDD Western Digital WD5000AAKX CD-Rom Sony/NEC AD-7260S FDD -- Boards Mainboard Gigabyte GA-Z68MA-D2H- B3 CPU Intel CPU Cooler EK RAM Graphic card Intel AN Realtek Audio Realtek Enclosure Case Fan -- HDD Fan -- 95Watt TDP EK x 4GB CPU integriert on board on board Serial No. Rev. Remark AU01+N01 5 / 17

6 Photo documentation EUT AU01+N01 6 / 17

7 3. Test specification Operating modes 1. Operating (ODD): 100% ODD oad Test Program: Burn in Test. 2. Operating (HDD): 100% Data read an veryfi Test Program: Burn In Test 3. Operating (System): 90% CPU workload Test Program : Burn in Test 4. Idle mode: Windows desktop Test Program: N/A Test setup For the measurement the EUT is placed on a test table according to DIN EN ISO 7779: , arrangement with 9 measurement points AU01+N01 7 / 17

8 Measurement points l 1 = 0,20 m EUT dimensions l 2 = 0,40 m l 3 = 0,37 m Measurement distance d = 1,0 m a = 1,10 m b = 1,20 m c = 1,37 m Measuring surface S = 17,88 m² Surface sound value 12,5 db Reference area S 0 = 1,0 m² Measurement point Coordinates x y z 1 1,10 m 0,00 m 0,69 m 2 0,00 m 1,20 m 0,69 m 3-1,10 m 0,00 m 0,69 m 4 0,00 m -1,20 m 0,69 m 5 1,10 m 1,20 m 1,37 m 6-1,10 m 1,20 m 1,37 m 7-1,10 m -1,20 m 1,37 m 8 1,10 m -1,20 m 1,37 m 9 0,00 m 0,00 m 1,37 m Formulas: a = 0.5 l 1 + d b = 0.5 l 2 +d c = l 3 + d S = 4(ab + bc + ca) Surface sound value = 10 lg S S 0 ; S 0 = 1m² AU01+N01 8 / 17

9 Measuring conditions Background noise level 14,0 db Room correction K 2 = 1,33 db Measurement uncertainty 3,0 db Absorption factor α = 0,5 ength 10,0 m Width 10,0 m Height 5,0 m Reference area A = 200,00 m² Climatic parameters Air temperature 23 C Relative humidity 43.8 % Barometric pressure 99,5 kpa Measuring method Measuring mode Test time Frequency range FAST 120 s 20Hz to 20 khz Frequency weighting A-weighting according to DIN EN Calibration method Acoustic calibrator Brüel & Kjaer Type 4231 Measurement uncertainty Calibrator 4231 (Brüel & Kjaer) Mediator 2250 (Brüel & Kjaer) Noisetable (EMV Testhaus) Measurement distance ± 0,2dB ± 0,3dB ± 0,5 db ± 0,1 db AU01+N01 9 / 17

10 ocation of measurement Description Manufacturer Inventory Nr. Anechoic chamber E00100 Measurement equipment Description Manufacturer Inventory Nr. Acoustic analyze 2250 Brüel & Kjaer N00110 Calibrator Brüel & Kjaer N AU01+N01 10 / 17

11 Photo documentation Test setup Test related measurement inaccuracies have to be taken into consideration when evaluating the test results. All used test instrument as well as the test accessories are calibrated at regular intervals AU01+N01 11 / 17

12 4. Summary of test results Noise emission values according to ISO 9296: 1988 Sound pressure level Operation mode 1: ODD Operation mode 2: HDD Operation mode 3: System Idle mode 21,8 db(a) 19,7 db(a) 18,5 db(a) 18,3 db(a) If the minimum distance to the background noise is less than 6 db, the value for standby is determined as the upper limit according to DIN EN 7779: Evaluated tests according to RA-UZ 78: , "Blauer Engel" Measured WAd imit WAd Passed Failed Operation mode 1: ODD 37,3 db(a) 52,0 db(a) X Operation mode 2: HDD 35,2 db(a) 44,0 db(a) X Operation mode 3: System 34,0 db(a) 48,0 db(a) X Idle mode 33,8 db(a) 40,0 db(a) X Wad = WAE + 3dB (Measurement uncertainty) The results are only applicable to the tested configuration AU01+N01 12 / 17

13 5. Test result Test 1: ODD, operating mode Measuring data Measurement point Sound pressure level pa 1 23,6 db(a) 2 24,4 db(a) 3 24,9 db(a) 4 24,1 db(a) 5 23,4 db(a) 6 23,9 db(a) 7 22,9 db(a) 8 22,8 db(a) 9 21,1 db(a) Average Sound pressure level ' p = 23,6 db Sound pressure level pf = 21,8 db Background noise correction K 1 = 0,50 db Surface sound pressure level S SP = 12,5 db Measurement uncertainty 3,0 db A-weighted sound power level WAE = 34,3 db(a) A-weighted sound power level WAd = 37,3 db(a) including production and measurement tolerances Formulas: p pf WAE 1 10lg N p pf S N i1 K K 1 SP ,1 pi Comments: AU01+N01 13 / 17

14 Test 2: HDD operating mode, random block read Measuring data Measurement point Sound pressure level pa 1 20,3 db(a) 2 22,9 db(a) 3 24,6 db(a) 4 23,0 db(a) 5 21,2 db(a) 6 20,5 db(a) 7 19,5 db(a) 8 19,9 db(a) 9 21,4 db(a) Average Sound pressure level ' p = 21,8 db Sound pressure level pf = 19,7 db Background noise correction K 1 = 0,79 db Surface sound pressure level S SP = 12,5 db Measurement uncertainty 3,0 db A-weighted sound power level WAE = 32,2 db(a) A-weighted sound power level WAd = 35,2 db(a) including production and measurement tolerances Formulas: p pf WAE 1 10lg N p pf S N i1 K K 1 SP ,1 pi Comments: AU01+N01 14 / 17

15 Test 3: System, operating mode Measuring data Measurement point Sound pressure level pa 1 20,2 db(a) 2 21,8 db(a) 3 22,1 db(a) 4 21,0 db(a) 5 20,6 db(a) 6 19,5 db(a) 7 20,0 db(a) 8 19,4 db(a) 9 21,5 db(a) Average Sound pressure level ' p = 20,8 db Sound pressure level pf = 18,5 db Background noise correction K 1 = 1,02 db Surface sound pressure level S SP = 12,5 db Measurement uncertainty 3,0 db A-weighted sound power level WAE = 31,0 db(a) A-weighted sound power level WAd = 34,0 db(a) including production and measurement tolerances Formulas: p pf WAE 1 10lg N p pf S N i1 K K 1 SP ,1 pi Comments: AU01+N01 15 / 17

16 Test 4: Idle mode Measuring data Measurement point Sound pressure level pa 1 21,1 db(a) 2 23,1 db(a) 3 21,4 db(a) 4 20,4 db(a) 5 19,6 db(a) 6 19,6 db(a) 7 19,2 db(a) 8 19,5 db(a) 9 21,1 db(a) Average Sound pressure level ' p = 20,7 db Sound pressure level pf = 18,3 db Background noise correction K 1 = 1,04 db Surface sound pressure level S SP = 12,5 db Measurement uncertainty 3,0 db A-weighted sound power level WAE = 30,8 db(a) A-weighted sound power level WAd = 33,8 db(a) including production and measurement tolerances Formulas: p pf WAE 1 10lg N p pf S N i1 K K 1 SP ,1 pi Comments: AU01+N01 16 / 17

17 6. Summary The regulations according to the mentioned standards are Kept The sound power levels WAd of the Equipment under Test are less than or equal to RA UZ 78: Not kept The sound power levels WAd of the Equipment under Test are higher than required by RA UZ 78: Straubing, August 11, 2011 Christian Kiermeier Test engineer Markus Biberger Technical executive AU01+N01 17 / 17