Fujitsu MHW2080BJ 用户手册

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页码 320
Device Overview 
 
1.5  Acoustic Noise 
Table 1.5 lists the acoustic noise specification. 
Table 1.5  Acoustic noise specification 
Item Specification 
•  Idle mode (DRIVE READY) 
Sound Power 
 
 
Sound Pressure (at 0.3m) 
 
2.0B [MHW2080BJ] 
2.5B [MHW2160BJ / MHW2120BJ] 
23dB [MHW2080BJ] 
29dB [MHW2160BJ / MHW2120BJ] 
 
Note: 
 
Measure the noise from the cover top surface. 
 
1.6  Shock and Vibration 
Table 1.6 lists the shock and vibration specification. 
Table 1.6  Shock and vibration specification 
Item Specification 
Vibration (Swept sine, 1/4 octave per minute) 
• Operating 
 
 
Non-operating 
 
5 to 500 Hz, 9.8m/s
2
 0-peak (1G 0-peak) 
(without non-recovered errors) 
 
5 to 500 Hz, 49m/s
2
 0-peak (5G 0-peak) 
(no damage) 
Shock (half-sine pulse) 
• Operating 
 
 
• Non-operating 
 
2940 m/s
2  
0-peak (300G 0-peak) 
2ms duration 
(without non-recovered errors) 
8820 m/s
2
 0-peak (900G 0-peak) 
1ms duration 
1176 m/s
2
 0-peak (120G 0-peak) 
11ms duration 
(no damage) 
 
1-10 
C141-E259