Seagate Momentus XT / Laptop SSHD Momentus XT Product Manual - Page 20

*During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to operational levels. Test for Prominent Discrete Tones (PDTs) Seagate follows the ECMA-74 standards for measurement and identification of PDTs. An exception to this process is the use of the absolute threshold of hearing. Seagate uses the lower limit for the threshold curve* to discern tone audibility and to compensate for the inaudible components of sound prior to computation of tone ratios according to Annex D of the ECMA-74 standards. *Defined as the median curve given by ISO 389-7 (Tf curve) minus 10dB at all frequencies. 2.12 Electromagnetic immunity When properly installed in a representative host system, the drive operates without errors or degradation in performance when subjected to the radio frequency (RF) environments defined in the following table: Table 6: Radio frequency environments Test Electrostatic discharge Radiated RF immunity Electrical fast transient Surge immunity Conducted RF immunity Power Frequency H-field immunity Voltage dips, interrupts Description Performance level Contact, HCP, VCP: ± 4 kV; Air: ± 8 kV B 80 to 1,000 MHz, 3 V/m, A 80% AM with 1 kHz sine 900 MHz, 3 V/m, 50% pulse modulation @ 200 Hz ± 1 kV on AC mains, ± 0.5 kV on external I/O B ± 1 kV differential, ± 2 kV common, AC mains B 150 kHz to 80 MHz, 3 Vrms, 80% AM with 1 kHz A sine 1 A/m, 50Hz/60Hz, 3 axes A Reference standard EN 61000-4-2: 95 EN 61000-4-3: 96 ENV 50204: 95 EN 61000-4-4: 95 EN 61000-4-5: 95 EN 61000-4-6: 97 EN 61000-4-8: 97 30% Reduction for 25 cycles >95% Reduction for 250 cycles >95%, 0.5 cycles C EN 61000-4-11: 94 C B 2.13 Reliability Measurement type Nonrecoverable read errors Annualized Failure Rate (AFR) Load/Unload (U/UL) 25°C, 50% relative humidity 32°C, 80% relative humidity 5°C, 80% relative humidity 5°C, 10% relative humidity 55°C, 16% relative humidity Warranty Specification 1 per 1014 bits read, max. 0.5% 600,000 software-controlled power on/off cycles 50,000 hard power on/off cycles 600,000 software-controlled power on/off cycles 50,000 hard power on/off cycles To determine the warranty for a specific drive, use a web browser to access the following web page: support.seagate.com/customer/warranty_validation.jsp You will be asked to provide the drive serial number, model number (or part number) and country of purchase. After submitting this information, the system will display the warranty information for your drive 14 Momentus XT Product Manual, Rev. B