Technical data

Remove the termination from the differential end by removing the five
14-pin differential terminator resistor SIPs.
3. Attach an H885-AA trilink connector to the DWZZA-VA 68-pin
high-density connector.
4. Install the DWZZA-VA in slot 0 of the BA350.
10.4.1.2 Preparing a BA356 Storage Shelf for Shared SCSI Usage
To prepare a BA356 storage shelf for shared SCSI bus usage, follow these
steps:
1. You need either a DWZZB-AA or DWZZB-VW signal converter.
The DWZZB-VW is more commonly used. Verify signal converter
termination as follows:
• Ensure that the DWZZB W1 and W2 jumpers are installed to enable
the single-ended termination at one end of the bus. The other end of
the BA356 single-ended SCSI bus is terminated on the personality
module.
• Remove the termination from the differential side of the DWZZB by
removing the five 14-pin differential terminator resistor SIPs. The
differential SCSI bus will be terminated external to the DWZZB.
2. Attach an H885-AA trilink connector to the DWZZB 68-pin high-density
connector.
3. Set the switches on the BA356 personality module as follows:
• If the BA356 is to house disks with SCSI IDs in the range of 0
through 6, set the BA356 personality module address switches
1 through 7 to off.
• If the BA356 is to house disks with SCSI IDs in the range of 8
through 14, set BA356 personality module address switches 1
through 3 to on and switches 4 through 7 to off.
If you are using a DWZZB-AA, do not replace the personality module
until you attach the cable in the next step.
4. If you are using a DWZZB-AA signal converter, use a BN21K-01
(1-meter; 3.3-foot) or BN21L-01 (1-meter; 3.3-foot) cable to connect the
single-ended side of the DWZZB-AA to the BA356 input connector, JA1,
on the personality module. Connector JA1 is on the left side of the
personality module as you face the front of the BA356, and is hidden
from normal view. This connection forms a single-ended bus segment
that is terminated by the DWZZB single-ended termination and the
BA356 termination on the personality module. The use of a 1-meter
(3.3-foot) cable keeps the single-ended SCSI bus (cable and BA356)
under the 3-meter (9.8-foot) limit to still allow high speed operation.
10–16 Configurations Using External Termination or Radial Connections to Non-UltraSCSI Devices