Hitachi Deskstar 7K250, Технические характеристики

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6.3.2 Power supply current (typical)........................................................29
6.3.3 Power supply generated ripple at drive power connector...............31
6.4 Reliability.................................................................................................32
6.4.1 Data integrity ..................................................................................32
6.4.2 Cable noise interference..................................................................32
6.4.3 Start/stop cycles ..............................................................................32
6.4.4 Preventive maintenance ..................................................................32
6.4.5 Data reliability ................................................................................32
6.4.6 Required power-off sequence .........................................................32
6.5 Mechanical specifications........................................................................33
6.5.1 Physical dimensions and weight .....................................................33
6.5.2 Mounting hole locations .................................................................34
6.5.3 Connector locations ........................................................................35
6.5.4 Drive mounting ...............................................................................35
6.5.5 Heads unload and actuator lock ......................................................35
6.6 Vibration and shock .................................................................................36
6.6.1 Operating vibration .........................................................................36
6.6.2 Nonoperating vibration ...................................................................36
6.6.3 Operating shock ..............................................................................37
6.6.4 Nonoperating shock ........................................................................37
6.6.5 Nonoperating rotational shock........................................................38
6.7 Acoustics..................................................................................................39
6.8 Identification labels..................................................................................39
6.9 Safety .......................................................................................................40
6.9.1 UL and CSA approval.....................................................................40
6.9.2 German safety mark........................................................................40
6.9.3 Flammability ...................................................................................40
6.9.4 Safe handling ..................................................................................40
6.9.5 Environment....................................................................................40
6.9.6 Secondary circuit protection ...........................................................40
6.10 Electromagnetic compatibility ...............................................................41
6.10.1 CE mark ........................................................................................41
6.10.2 C-TICK mark ................................................................................41
6.10.3 BSMI mark ...................................................................................41
6.11 Packaging...............................................................................................41
7.0 Electrical interface specification.......................................................................43
7.1 Connector location ...................................................................................43
7.1.1 DC power connector .......................................................................43
7.1.2 AT signal connector........................................................................43
7.2 Signal definitions .....................................................................................44
7.3 Signal descriptions ...................................................................................45
7.4 Interface logic signal levels .....................................................................48
7.5 Reset timings............................................................................................48
7.6 PIO timings ..............................................................................................49
7.6.1 Write DRQ interval time.................................................................49