Filter
Top Products
Installing the A6828A Adapter
Specifying SCSI Parameters
Chapter 238
Using the Jumper for Controlling Auto Termination
The A6828A adapter has one set of pins that control enabling and
disabling of the auto termination feature. The pins—labeled A_TERM
—are at the end of the HBA that is opposite to the bulkhead connectors.
Figure 1-1 on page 20 shows where the pin set is located on the adapter.
The default setting of the pin set on the A6828A HBA is the open
position (the jumper is on only one pin of its pin set). This is the auto
termination enabled state. In this state, the A6828A automatically
senses whether a cable from a powered SCSI device is attached and
provides the proper termination (depending on whether a powered device
is present).
To disable auto termination on the adapter, change the jumper from the
default open position to the shorted position (the jumper is on both pins
of the pin set). This is the auto termination disabled state.
The following Figure 2-2 shows the two jumper positions.
Figure 2-2 Auto Termination Jumper Positions
1
An external terminator might be required on the adapter, depending
on the SCSI bus configuration. If you need an external terminator for
the A6828A, use SCSI LVD/SE terminator (HP product number
C2370A).
Table 2-4 Summary of A6828A Auto Termination Configurations
Jumper Position
Auto Termination
Feature
Termination
Applied on
Adapter
Open
(Auto termination enabled)
Shorted
(Auto termination disabled)