Copyright ⌐ 1996, 1997 Tech Data Corporation

Configuration and Jumper Options

(Pin numbers refer to the Option Jumper Block)

• SCSI ID Selection
• Jumpers at ID0, ID1, and ID2 (pins 3/4, 5/6, and 7/8) select the SCSI address. Each SCSI device on one Host Adapter must have a unique address.

• Interface Termination
• Jumper installed at W4 (27/28) (Default) - The drive provides termination for the interface lines; onboard termination is electrically enabled.
• Jumper omitted at W4 (27/28) - The drive does not provide termination for the interface lines; onboard termination is electrically disabled.

• Terminator Power
• Jumper installed at W1 (Default) - The drive provides terminator power.
• Jumper installed at W2 - The host provides terminator power (via Interface Connector J1A).
• Jumper installed at W3 - The drive provides terminator power (via J1A) to the SCSI Bus.

• Spindle Control (SP0)
• Jumper installed at SP0, jumper omitted at SP1 - The spindle motor starts when SCSI ‘START UNIT’ command is received.
• Jumpers omitted at SP0 (Default) and at SP1 - The spindle motor starts at power-on.

  
  

• Spindle Delay (SP1)
• Jumper installed at SP1, jumper omitted at SP0 Spindle motor start-up is delayed, based on SCSI ID (12 seconds per SCSI ID).
• Jumpers omitted at SP1 (Default) and at SP0 - The spindle motor starts at power-on.

• Write Protect
• A jumper at WP (Pins 15 and 16) selects the write protect option.

  Jumper	The drive is write protected.
  No Jumper	The drive is not write protected. (Default)

• Parity
• A jumper at PTY (Pins 17 and 18) selects the bus parity check option.

  Jumper installed at PTY	- The drive neither generates nor detects parity.
  Jumper omitted at PTY (Default)	- The drive generates parity and has parity detection enabled.

• Remote LED
• Open-collector output - Used to drive a user-supplied LED to indicate the drive is active.

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