Seagate ST12400N - Page 7

Product Manual - Hawk 2 Family SCSI-2 (Volume 1), Rev. B vii
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Table of contents
7.0 Physical/electrical specifications .............................................................................................. 21
7.1 AC power requirements ................................................................................................... 21
7.2 DC power requirements ................................................................................................... 21
7.2.1 Conducted noise immunity ................................................................................ 22
7.2.2 Power sequencing ............................................................................................. 22
7.2.3 12 V - current profile .......................................................................................... 22
7.3 Heat/power dissipation..................................................................................................... 23
7.4 Environmental limits......................................................................................................... 23
7.4.1 Temperature ...................................................................................................... 24
7.4.2 Relative humidity ............................................................................................... 26
7.4.3 Effective altitude (sea level ref).......................................................................... 26
7.4.4 Shock and vibration ........................................................................................... 26
7.4.5 Air cleanliness ................................................................................................... 28
7.5 Electromagnetic compatibility........................................................................................... 28
7.5.1 Electromagnetic susceptibility ........................................................................... 28
7.6 Mechanical specifications ................................................................................................ 29
7.6.1 Drive orientation ................................................................................................ 31
7.6.2 Cooling .............................................................................................................. 31
7.6.3 Drive mounting .................................................................................................. 31
8.0 Media characteristics ................................................................................................................. 32
8.1 Media description............................................................................................................. 32
9.0 Defect and error management ................................................................................................... 33
9.1 Drive internal defects/errors ............................................................................................. 33
9.2 SCSI systems error considerations.................................................................................. 33
10.0 Option/configuration headers.................................................................................................... 34
10.1 Drive ID/option select header........................................................................................... 34
10.2 Synchronized spindles interface ...................................................................................... 37
10.2.1 electrical description .......................................................................................... 37
10.3 Grounding ........................................................................................................................ 38
11.0 Interface requirement ................................................................................................................. 39
11.1 General description.......................................................................................................... 39
11.2 SCSI interface messages supported................................................................................ 39
11.3 SCSI interface commands supported .............................................................................. 40
11.3.1 Inquiry data ....................................................................................................... 42
11.3.2 Mode sense data............................................................................................... 43
11.4 SCSI bus conditions and miscellaneous features supported............................................ 48
11.5 Synchronous data transfer ............................................................................................... 49
11.5.1 Synchronous data transfer periods supported ................................................... 49
11.5.2 REQ/ACK offset ................................................................................................ 49
11.6 Physical interface............................................................................................................. 49
11.6.1 DC cable and connector .................................................................................... 51
11.6.2 Physical characteristics ..................................................................................... 51
11.6.3 Connector requirements .................................................................................... 53
11.6.4 Electrical description ......................................................................................... 60
11.7 Disc drive timing .............................................................................................................. 65