Installation Guide

10 Hardware Installation
Setting the SCSI ID
Depending upon your setup, operating system and number of SCSI devices on the bus, you may have to
change the SCSI address of the AIT-70D/100D. Each device on the bus must have its own unique address.
See Figure 6.
Note
The SCSI ID has been preset at the factory to 0.
Figure 6. Setting the SCSI ID
The SCSI ID switch is located on the rear of the AIT-70D/100D. Using a small pointed object, depress either
the + or the - button to select the proper ID.
4 Count each device's SCSI ID in sequence 0 to 15 on each SCSI bus to confirm that no two SCSI devices
have the same ID.
Note
The SCSI Host Adapter is normally set to SCSI ID 16, so this ID
is usually not available for a device.
Check the Terminating Resistor
SCSI buses require termination at each end for proper operation. A typical external subsystem installation
would be terminated at the SCSI host adapter and at the last device in the chain.
If an external device were being used with an internal device (on the same channel), the SCSI host adapter
would be in the middle of the bus rather than at the end. In this case, the termination would be at the internal
SCSI ID
switch
AIT-70D/100D
Rear Panel