
D.1 Single-System Installation of an DECarray
Figure D–3 VAX 4000 DSSI Connectors
slot #2 slot #1 slot #0
Mass Storage Area
Model 200
FRONT VIEW
slot #3 slot #2 slot #1 slot #0
Mass Storage Area
Operator/
Control Panel
Fan Tray
AC
on/off
H3604
J1
J2
J3
KFQSA
Q−Bus
Connector
Description
J1, J2
J3
KFQSA − J1
DSSI Bus 1 ports (external ISEs only)
DSSI Bus 0 port (internal/external ISEs)
DSSI IN/OUT port (external RF disk ISEs)
VAX4000_family.rags
AC Input
Ground
Stud
Model 200/300
BA4xx
KFQSA
Q−Bus
J1
J1
J1
Connector
Description
J1 DSSI Bus 0 port (internal/external ISEs)
KFQSA − J1 DSSI IN/OUT port (external RF disk ISEs)
BA2xx
c. Install the terminator or terminators (part number 12–31281–01) to
their correct position on the SF7x enclosures, TF857 magazine tape
ISEs, and system I/O panel.
Note that the positions are numbered on the cabinet frame side rails
on the front and the rear of the cabinet.
• If the array has an SF7x storage enclosure in position 1 ONLY then
install a terminator (12–31281–01) in the left DSSI connector of the
enclosure.
• If the array has an SF7x storage enclosure in position 1 and a
TF857 magazine tape ISE in positions 5 and 6, then install a
terminator (12–31281–01) in the bottom DSSI connector of the
TF857 magazine tape ISE in position 6.
Installing a DECarray with VAX 4000 Systems D–7
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