IBM DTCA-24090 Hard Drive Specifications - Page 36

5.5 Vibration and Shock All vibration and shock measurements in this section shall be for the disk drive without the mounting attachments for the systems. The input level shall be applied to the normal drive mounting points. 5.5.1 Operating Vibration The disk drive will operate without a hard error while being subjected to the following vibration levels. 5.5.1.1 Random Vibration The measurements are carried out with vibration test level 0.67G RMS (Root Mean Square) during 30 minutes of random vibration using the power spectrum density (PSD) as follows. Random vibration PSD profile Breakpoint 5 Hz 17 Hz 45 Hz 48 Hz 62 Hz 65 Hz 150 Hz 200 Hz 500 Hz 2.0 x E 5 1.1 x E 3 1.1 x E 3 8.0 x E 3 8.0 x E 3 1.0 x E 3 1.0 x E 3 5.0 x E 4 5.0 x E 4 g**2/Hz The specified levels are measured at the mounting points. 5.5.1.2 Swept Sine Vibration 1 G (Zero to peak), 5 to 500 to 5 Hz sine wave 2.0 oct/min sweep rate 5.5.2 Non-Operating Vibration 5.5.2.1 Random Vibration The test consists of a random vibration applied in each of three mutually perpendicular axes with the time duration of 15 minutes per axis. The PSD levels for the test simulates the shipping and relocation environment which is shown below. Figure 19. Random Vibration PSD Profile Breakpoints (Non-Operating) Hz Random Vibration PSD Profile Breakpoints (Non-Operating) Hz 2.5 5 40 500 G**2/Hz 0.001 0.03 0.018 0.018 Overall RMS level of vibration is 3.01G (RMS). 28 OEM Specifications of DTCA-2xxxx 2.5 inch H D D