HP A6829A User's Manual And Service Manual page 55

Table 2-4 Summary of A6829A Auto Termination Configurations
Using the Jumper for Controlling Auto Termination
The A6829A adapter has two sets of pins that control enabling and
disabling of the auto termination feature. The pins—labeled A_TERM
and B_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 sets are
located on the adapter. A_TERM controls the auto termination feature
for channel A, and B_TERM controls the feature for channel B.
The default setting of each pin set on the A6829A 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 A6829A 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.
Chapter 2
Jumper Position
1
An external terminator might be required on the adapter, depending
on the SCSI bus configuration. If you need an external terminator for
the A6829A, use SCSI LVD/SE terminator (HP product number
C2370A).
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Installing the A6829A Adapter
Specifying SCSI Parameters
Auto Termination
Feature
Termination
Applied on
Adapter
41