Compaq AA-RHGWC-TE - Manual (Page 71)

Figure 3–4: DS-DWZZH-05 Front View
Fair Disable
Host Port
SCSI ID
1
(13)
Host Port
SCSI ID
3
(15)
Controller
Port
SCSI ID
6 - 4
(6 - 0)
Busy
0
2
ZK-1447U-AI
Host Port
Host Port
SCSI ID
SCSI ID
(14)
Power
(12)
3.6.1.2.4 SCSI Bus Termination Power
Each host adapter connected to a DS-DWZZH-05 UltraSCSI hub port must
supply termination power (termpwr) to enable the termination resistors
on each end of the SCSI bus segment. If the host adapter is disconnected
from the hub, the port is disabled. Only the UltraSCSI bus segment losing
termination power is affected. The remainder of the SCSI bus operates
normally.
3.6.1.2.5 DS-DWZZH-05 Indicators
The DS-DWZZH-05 has two indicators on the front panel (see Figure 3–4).
The green LED indicates that power is applied to the hub. The yellow LED
indicates that the SCSI bus is busy.
3.6.1.3 Installing the DS-DWZZH-05 UltraSCSI Hub
To install the DS-DWZZH-05 UltraSCSI hub, follow these steps:
1. Remove the W1 jumper to enable wide addressing mode (see Figure 3–3).
Shared SCSI Bus Requirements and Configurations Using UltraSCSI Hardware 3–15