Seagate ST12450W, Product Manual

Page: 9 / 84

ST12450W/WD Product Manual, Rev. A vii
11.7 SCSI physical interface ............................................................................................. 53
11.7.1 Physical characteristics ................................................................................ 53
11.7.2 Connector requirements ............................................................................... 54
11.7.3 Electrical description ..................................................................................... 54
11.8 SCSI wide physical interface ..................................................................................... 59
12.0 Options .............................................................................................................................. 65
12.1 Front panel................................................................................................................ 65
12.2 Single-unit shipping pack .......................................................................................... 65
12.3 Drive termination ....................................................................................................... 65
12.4 Barracuda 2, 2HP Installation Guide ......................................................................... 65
13.0 Accessories ..................................................................................................................... 67
13.1 Adaptor accessory frame kit ..................................................................................... 67
Index .......................................................................................................................................... 69
Figures
Figure 1. Barracuda 2, 2HP disc drive ...................................................................................... 1
Figure 2. Barracuda 2, 2HP disc drive (exploded view) ............................................................ 5
Figure 3. OEM interruptible thermal calibration implementation ................................................ 12
Figure 4. Synchronized drive interconnect diagram .................................................................. 17
Figure 5. Synchronized reference signal characteristics ........................................................... 18
Figure 6. Air flow ....................................................................................................................... 23
Figure 7. GYHX temperature measurement locations .............................................................. 24
Figure 8. RYGX temperature measurement locations .............................................................. 25
Figure 9. Temperature measurement location .......................................................................... 25
Figure 10. Typical Barracuda 2, 2HP drive
+
12V current profile ................................................. 29
Figure 11. Mounting configuration dimensions ............................................................................ 33
Figure 12. Recommended mounting ........................................................................................... 34
Figure 13. Barracuda 2, 2HP drive physical interface ................................................................. 39
Figure 14. Barracuda drive ID and option select headers ........................................................... 40
Figure 15. SCSI reference index signal driver/receiver combination ........................................... 42
Figure 16. J5 configuration select header specification ............................................................... 43
Figure 17. Barracuda 2, 2HP physical interface .......................................................................... 53
Figure 18. Single-ended transmitters and receivers .................................................................... 55
Figure 19. Typical differential I//O line transmitter/receiver and terminators ................................ 57
Figure 20. Wide SCSI device connector ..................................................................................... 59