Difference between revisions of "BA11 mounting boxes"
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* [[BA11 Mounting Box|BA11]] - the first, used in the [[PDP-11/20]] | * [[BA11 Mounting Box|BA11]] - the first, used in the [[PDP-11/20]] | ||
* [[BA11-A mounting box|BA11-A]] - the terminal letter notwithstanding, a late unit, used for the [[PDP-11/44]] | * [[BA11-A mounting box|BA11-A]] - the terminal letter notwithstanding, a late unit, used for the [[PDP-11/44]] | ||
| − | * [[BA11-D | + | * [[BA11-D Mounting Box|BA11-D]] - used for the [[PDP-11/05]] and early [[PDP-11/40]]'s |
| + | * [[BA11-E Mounting Box|BA11-E]] - used for the [[PDP-11/05]] | ||
* [[BA11-F Mounting Box|BA11-F]] - used in the larger [[UNIBUS]] -11's like the [[PDP-11/45]] | * [[BA11-F Mounting Box|BA11-F]] - used in the larger [[UNIBUS]] -11's like the [[PDP-11/45]] | ||
* [[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 | ||
| − | The -F was a 21" box, and the -L | + | The -F was a 21" box, and the -E and -L were 5-1/4"; the rest were all 10-1/2". |
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 15:47, 26 September 2018
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 - the first, used in the PDP-11/20
- BA11-A - the terminal letter notwithstanding, a late unit, used for the PDP-11/44
- BA11-D - used for the PDP-11/05 and early PDP-11/40's
- BA11-E - used for the PDP-11/05
- 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
The -F was a 21" box, and the -E and -L were 5-1/4"; the rest were all 10-1/2".
There were also several boxes in the BA11 series which held quad QBUS backplanes:
These were all 5-1/4" high.
