Connecting The Controller Card To Both Internal And External Drives - Texas Instruments PHP1240 Manual

Disk Memory System

Connecting the Controller Card to Both Internal and External Drives

1 . If your disk system includes both an internal disk drive (Model PHP 1250) and one or
more external drives (Model PHP 1850), first remove the termination pack from the
internal drive and install the internal drive and the Controller Card, following the
instructions in the preceding section.
2. Use the special cable included with the Controller Card to connect the external
drive(s) to your system. Connect one end of the cable to the connector tab that
extends from the back of the peripheral system, making sure that the pins on the
tab align with the holes on the connector cable.
3. Attach the adapter board included with the Controller Card to the other end of the
cable.
4. Each external drive has an attached cable with two connectors, one at the end of the
cable and one near the middle of the cable. Attach the end of the disk drive cable to
the adapter board on the Controller's cable.
5. If you are using two external drives, insert an adapter board into the connector in
the middle of the first disk drive's cable.
Connect the end of the second external drive's cable into the adapter board of the
6.
first external drive's cable. All but the last disk drive (if you are using more than one
drive) should have their termination packs removed. The drive farthest from the
controller should be the one that is not modified.
the adapter board in order to insert it. It goes in easily if you have it positioned
correctly.
The internal drive in the Peripheral Expansion System is considered DSK l . The first
external drive, the one connected directly to the Controller Card, is DSK2. The third
disk drive (farthest from the Controller) is DSK3. The labels provided with your drive(s)
can be used to identify each drive.
Note:
It may be necessary to rotate
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