Difference between revisions of "BA11 mounting boxes"
(add BA11-B) |
(+BA11-P) |
||
| Line 13: | Line 13: | ||
* [[BA11-K mounting box|BA11-K]] - used to hold both [[Central Processing Unit|CPUs]] as well as [[device controller]]s for UNIBUS -11's | * [[BA11-K mounting box|BA11-K]] - used to hold both [[Central Processing Unit|CPUs]] as well as [[device controller]]s for UNIBUS -11's | ||
* [[BA11-L mounting box|BA11-L]] - ditto | * [[BA11-L mounting box|BA11-L]] - ditto | ||
| + | * [[BA11-P card cage|BA11-P]] - used to hold the [[PDP-11/60]] | ||
| − | The -F was a 21" box, and the -E and -L were 5-1/4"; the rest were all 10-1/2". All of them other than the earliest -C and -E models provided the standard [[DEC power distribution connectors]]; the 9-[[pin]] version in the -D, and the 6/15 version in the others. | + | The -F was a 21" box, and the -E and -L were 5-1/4"; the rest (other than the -P) were all 10-1/2". All of them other than the earliest -C and -E models provided the standard [[DEC power distribution connectors]]; the 9-[[pin]] version in the -D, and the 6/15 version in the others. |
There were also several boxes in the BA11 series which held [[DEC card form factor|quad]] [[QBUS]] backplanes: | There were also several boxes in the BA11 series which held [[DEC card form factor|quad]] [[QBUS]] backplanes: | ||
Revision as of 12:16, 11 January 2022
The BA11 is the name for a series of hex system unit backplane mounting boxes for the H960 series of 19"-wide racks produced by DEC. Although they were intended to principally be rack-mounted, many were available in table-top configuration as well.
The H960 racks provided 63" of vertical mounting space, divided into units of 10-1/2", which were further sub-dividable into a pair of 5-1/4" spaces. The BA11 mounting boxes were designed for these spaces.
They included:
- BA11-A - the terminal letter notwithstanding, a late unit, used for the PDP-11/44
- BA11-B - mentioned briefly in some early documentation; the details of what it was are still unclear
- BA11-C - the first, used in the PDP-11/20
- BA11-D - used for the PDP-11/05 and early PDP-11/40's
- BA11-E - expansion box, used with the early PDP-11s
- BA11-F - used in the larger UNIBUS -11's like the PDP-11/45
- BA11-K - used to hold both CPUs as well as device controllers for UNIBUS -11's
- BA11-L - ditto
- BA11-P - used to hold the PDP-11/60
The -F was a 21" box, and the -E and -L were 5-1/4"; the rest (other than the -P) were all 10-1/2". All of them other than the earliest -C and -E models provided the standard DEC power distribution connectors; the 9-pin version in the -D, and the 6/15 version in the others.
There were also several boxes in the BA11 series which held quad QBUS backplanes:
These were all 5-1/4" high.
