Pioneer DR-U16S Installation, Scsi Termination, When Termination Is Required, Disable Eject

INSTALLATION

SCSI TERMINATION

SCSI termination is a technique used to absorb line reflections at the beginning and end of a SCSI daisy chain that would otherwise interfere with legitimate SCSI signals and cause errors. To minimize interference with data transfer, SCSI termination is absolutely required for proper operation of your Drive.

WHEN TERMINATION IS REQUIRED

If you are installing the Drive as the only SCSI device or as the last SCSI device in the chain, termination must be enabled.

A built-in terminator switch is located on the rear panel. Function Switch #5 is used to enable or disable termination as described on page 14.

2048/512	TERMINATION (SHORT – OFF)
DISABLE EJECT		RESERVED
RESERVED			SCSI		ID
	2			1	0

Switch # 8 7 6 5 4 3 2 1

As you can see in the above illustrations, whether you have an ON/OFF Terminator Switch or a Termination Function Switch, your Drive has an ON/OFF termination option.

ON: The Terminator Switch must be open when the drive is:

♦the only SCSI device connected to an interface card; and/or

♦the last physical device in a daisy-chain.

OFF: The Terminator Switch must be short-circuited when the drive is:

♦connected in the middle of a SCSI chain.

SETTING FUNCTION SWITCHES

Function Switches, also known as Jumper Switches, control the operational functions of the CD-ROM Drive.

The jumper is ON when a short-circuit socket is inserted to short-circuit the upper and lower pin, and it is OFF in open condition.

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