Compaq AA-RHGWC-TE manual Cabling the Compaq 20/40 GB DLT Tape Drive

Figure 8–4: Compaq 20/40 GB DLT Tape Drive Rear Panel

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20/40 GB DLT Tape Drive

ZK-1603U-AI

8.3.2 Cabling the Compaq 20/40 GB DLT Tape Drive

The Compaq 20/40 GB DLT Tape Drive is connected to a single-ended segment of the shared SCSI bus. A DWZZB-AA signal converter is required to convert the differential shared SCSI bus to single-ended. Figure 8–5 shows a configuration with a Compaq 20/40 GB DLT Tape Drive on a shared SCSI bus.

To configure the shared SCSI bus for use with a Compaq 20/40 GB DLT Tape Drive, follow these steps:

1.You will need one DWZZB-AA for each shared SCSI bus with a Compaq 20/40 GB DLT Tape Drive.

Ensure that the DWZZB-AA jumpers W1 and W2 are installed to enable the single-ended termination.

Remove the termination from the differential end by removing the five 14-pin SIP resistors.

2.Attach an H885-AA trilink connector or BN21W-0B Y cable to the differential end of the DWZZB-AA.

3.Connect the single-ended end of the DWZZB-AA to the Compaq 20/40 GB DLT Tape Drive with cable part number 199629-002 or 189636-002 (1.8-meter cables).

4.Install terminator part number 341102-001 on the other tape drive SCSI connector.

5.Connect the trilink on the DWZZB-AA to another trilink or Y cable on the differential shared SCSI bus with a 328215-00X, BN21K, or BN21L cable. Keep the length of the differential segment below the

25-meter maximum length (cable part number 328215-004 is a 20-meter

Configuring a Shared SCSI Bus for Tape Drive Use 8–11