User manual MAXTOR CFP4207 REV A 10-1995

[. . . ] CFP4207 Series Intelligent Disk Drive Product Manual October 1995 Pre-Release Revision A 3081 Zanker Road San Jose, CA 95134-2128 (408) 456-4500 FCC Notice This equipment generates and uses radio frequency energy and, if not installed and used properly; that is, in strict accordance with the manufacturer's instructions, may cause interference to radio and television reception. It has been type tested and found to comply with the limits for a Class B computing device in accordance with the specifications in Part 15 of FCC Rules, which are designed to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio or television reception, which can be determined by turning the equipment on and off, you are encouraged to try to correct the interference by one or more of the following measures: · · · Reorient the receiving antenna. [. . . ] Figure 4-4 shows the location of the terminator resistors. Figure 4-4 Terminator Resistor Locations Remove to Disable TERMPWR Input/Output SCSI Terminators. Remove in all but the last drive in the chain J1 J2 E8 F1 J3 SS LED J7 J4 J5 2107_4_4 TERMPWR Fuse NOTE: The TERMPWR output of the drive is protected by a 1. 5 Ampere fuse. If external terminators are being powered from the drive and SCSI bus problems are suspected, verify that the fuse is still operational using a meter. Technical Reference Manual Page 35 Chapter 4 Installing the Drive Cabling the Drive - CFP4207S Connect the SCSI interface cable and the spindle synchronization cable (when needed) as shown in Figure 4-5. Figure 4-5 Connecting the cabling J1 J2 E8 50-pin SCSI Interface F1 Spindle Synchronization Connection J3 SS LED J7 Key LED Connection J4 Pin 1 (typically indicated by a colored stripe on the cable LED J6 Pin 1 4-pin Power Connector OE6, LED Connection 2107_4_5 SCSI Bus Cable The cable and mating connector required to connect the drive to the SCSI bus are described in Chapter 5. In addition, the cable should meet the following guidelines, particularly with FAST SCSI-2 systems: · · · · · · Do not route the data cable next to the drive PCB or any other high frequency or large current switching signals. Improper drive operation can result from improper cable routing. Cable stubs should not exceed 0. 1 meter (4 inches). There should be 0. 3 meters (12 inches) of cable between drives. The total cable length should not exceed 6 meters (20 feet) and may have to be reduced if a mixture of round and flat cable are used. Do not tightly bundle excess flat cable against each other since this promotes cross coupling of signals on the cable. Use spacers to maintain a minimum of 0. 050 inches (1. 27mm) gap between cable runs. Do not clamp the cable tightly against a metal chassis since this will degrade the signal. Use spacers or a non-flammable insulation material to maintain a gap between the chassis and the cable. Spindle Synchronization The spindle rotation of up to 35 drives may be synchronized together by daisy chaining pin 1 to pin 1 and pin 2 to pin 2 on connector J3. Spindle Synchronization is enabled by setting the appropriate bits in the RPL field of Mode Select page 04. Refer to the Eleventh Generation Disk Drive SCSI-2 Interface Manual for a description of the command implementation. The synchronization tolerance is 1%. Page 36 Filepro CFP4207 Series Installing the Drive Chapter 4 Attaching Power to the Drive - CFP4207S The drive has a 4-pin DC power connector, J4 mounted on the PCB. The recommended mating connector is AMP part number 1-480424-0 utilizing AMP pins, part number 350078-4 or equivalent. Connect the DC Power cable to the drive as shown in Figure 4-5. Attaching a Remote LED - CFP2107S J3, pin 3 or J6 pin 10 A remote LED can be attached using a 0. 1 inch center, 2-pin connector to pins 3 and 4 of J3. The anode of the LED should be connected to pin 3 and the cathode to pin 4. An external LED can optionally be attached using a 2mm center connector on J6, pins 9 and 10 (location OE6). The anode of the LED should be connected to pin 10 and the cathode to pin 9. The external LED is connected in parallel to the on board LED and is powered through a 200 ohm current limiting resistor to the +5 volt power. J3, pin 4 or J6, pin 9 Mounting the Drive - CFP4207S The drive is designed to be used in applications where the unit may experience shock and vibrations at greater levels than larger and heavier disk drives will tolerate. The design features which allow greater shock tolerance are the use of rugged heads and media, a dedicated landing zone, closed loop servo positioning and specially designed motor and actuator assemblies. [. . . ] Track Skew Factor: Defines the number of physical sectors between the last logical block of one track, and the first logical block on the next sequential track of the same cylinder. Cylinder Skew Factor: Specifies the number of physical sectors between the last logical block of one cylinder and the first logical block on the next sequential cylinder. SSEC (Soft Sector Format): Set to zero to indicate the drive does not support a soft sector format. HSEC (Hard Sector Format): Set to one to indicate the drive supports a hard sector format. [. . . ]