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Section 3 Installation
3.1 About SCSI Devices
The Model GS-800 Calibrated Imaging Densitometer is a Small Computer System Interface
(SCSI) device. It communicates with your computer by using the SCSI-2 standard. The
SCSI communication standard allows you to connect more than one peripheral device to
the same port of your computer in chain fashion.
A unique SCSI ID number is assigned to each device in the SCSI chain enabling your
computer to identify the device with which it is communicating and the priority of each
device.
Warning:
If two SCSI devices have the same ID number, your system will not work
properly and you may damage your SCSI devices.
A SCSI chain requires an electronic component called a 'terminator' which absorbs old
signals traveling along the cables and keeps the path open for new signals. The chain
should never have more than two terminators, one at each end. It is important to
remember that using too many or too few terminators may damage your SCSI devices.
Some SCSI devices have built-in terminators and must therefore be placed at the beginning
or end of your SCSI chain.
Note
:
The Model GS-800 Calibrated Imaging Densitometer has a built-in terminator.
3.2 Changing the SCSI ID Number
Your Densitometer's SCSI ID setting is factory preset at #6. Check to see if this ID setting
is used by another device connected to your computer’s SCSI port.
If SCSI ID #6 is not used, you do not need to change your Densitometer’s SCSI ID number.
You can directly proceed to hardware connection and software installation. For
installation instructions, proceed to Section 3.4 if you are connecting to a Macintosh
computer or to Section 3.5 if you are connecting to a PC.
If you find however, that another connected device is already using SCSI ID #6, then you
must reset the SCSI ID on your Densitometer.
To reset the SCSI ID, do the following:
1.
Make sure the Densitometer power is off.
2.
Use a screwdriver to rotate the notch on the SCSI ID switch until an arrowhead
points to an unused number.
Note
: Do not use SCSI ID setting 7 through 9 on your Densitometer. They are for factory
use only.
