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B-10 Appendix B

Operating This Jukebox on a SCSI Bus

The SCSI Bus and This Jukebox

It is very important that the 68-pin to 50-pin cable is properly configured to assure

that the eighteen truncated lines are properly terminated.

Cable Lengths

Observe SCSI cable maximum lengths;

- 3 meters (9.8 feet) for the single-ended bus (remember, this is a fast device)

- 25 meters (82 feet) for the differential bus.

Termination

• Refer to the documentation that comes with your particular adapter to see how to

apply termination.

• Use active terminators to reduce noise sensitivity.

• Never terminate the bus at any place except the physical ends. Terminating the

bus in the middle will probably cause the bus to become inoperable or operate in

a state that could cause data loss.

• If devices are on both sides of the host computer adapter (such as hard drives

internal to the host computer and a jukebox external to the host computer) make

sure that there is no termination on the host computer adapter. Termination must

be only on the device inside the computer that is farthest from the host adapter

and the physical device inside the computer, and the last physical device external

to the computer.

General

• Do not connect a single-ended bus to a differential bus. Damage can occur.

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HP 220mx Bedienungsanleitung Seite 98