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3.3 Checking the Terminators
There should be two terminators in a SCSI chain. It is best to place the terminators at each
end of the SCSI chain. The GS-800 Calibrated Densitometer has a built-in active terminator
switch for you to turn on and off. Number 1 represents
active terminator
and number 2
represents
terminator power
. Turning both the
active terminator
and
terminator power
switch on by pressing them down will enable the built-in “active terminator” function.
The simplest configurations for using the Densitometer with a SCSI adapter card are as
follows:
Case 1:
Connect the Densitometer to an interface card that does not have another
SCSI device attached to it. e. g. Densitometer is the
only
SCSI device
connected to your computer.
In this situation, the card will have a built-in terminator. The card forms one end of the SCSI
chain, the Densitometer forms the other end. Turn
on
the
active terminator
and
terminator power
switch by pressing them down to enable the built-in “active terminator”
function.
Case 2
:
Connect the Densitometer to a SCSI card that has another SCSI device
attached to it.
In this case, turn
off
the
active terminator
on your Densitometer. If the SCSI device next
to Densitometer is the last SCSI device of the SCSI chain, please refer to the instruction
manual of this device to set its terminator on. If you experience unreliable SCSI operation
and suspect terminator problems, contact Bio-Rad Technical Service.
Case 3
:
Densitometer is the
last
SCSI device in the SCSI Chain
The setting of active terminator is the same with Case 1. Simply turning on the active
terminator of your Densitometer.
