Connecting Two Expansion Boxes - DEC MicroVAX 3100 Owner's Manual

4.5 Connecting Two Expansion Boxes
You can add an additional expansion box at a later time and daisy-chain the
second box to the first. To daisy-chain (link two expansion boxes together
in series), perform the following steps:
1. Make sure the on/off switches on the system unit and all expansion
boxes are set to off (0).
2. Remove the 50-pin terminator on the first expansion box. Store the
terminator for future use.
3. Connect one end of the 50-pin to 50-pin connector cable to the second
expansion box.
NOTE:
If you have more than one of the same type of device attached
to your system, you must change the SCSI ID on the second device to
an open ID number on the SCSI bus. See Appendix B for additional
information.
4. Connect the other end of the 50-pin to 50-pin connector cable to an
available port on the first expansion box.
5. Attach a 50-pin terminator to the unused SCSI port on the second
expansion box.
6. Connect the power cord of the second expansion box to the expansion
power receptacle and plug the other end into an electrical outlet. Each
expansion box needs its own source of power.
Figure 4-7 shows how to daisy-chain two expansion boxes;
4-8
MicroVAX 3100 and VAXserver 3100 Owner's Manual