BA11-K mounting box - Revision history

Jnc: New cat

2023-07-11T01:18:48Z

New cat

← Older revision		Revision as of 01:18, 11 July 2023
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	'''''Note:''''' The two types of slides use large pivot bolts/pins that ''appear'' to be identical, but they are '''not'''! The shoulder on the ones for the later kind of slides are not as deep as those on the earlier kind.		'''''Note:''''' The two types of slides use large pivot bolts/pins that ''appear'' to be identical, but they are '''not'''! The shoulder on the ones for the later kind of slides are not as deep as those on the earlier kind.

	[[Category: DEC ~~Hardware~~]]		[[Category: DEC Mounting Boxes]]

Jnc: Add slide info

2018-10-08T22:35:06Z

Add slide info

← Older revision		Revision as of 22:35, 8 October 2018
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	In the [[PDP-11/04]] and [[PDP-11/34]] (the models which used this mounting box to hold the CPU) the front panels were the [[KY11-LA Operator's Console]] and the [[KY11-LB Programmer's Console]] (the same for both CPU's).		In the [[PDP-11/04]] and [[PDP-11/34]] (the models which used this mounting box to hold the CPU) the front panels were the [[KY11-LA Operator's Console]] and the [[KY11-LB Programmer's Console]] (the same for both CPU's).

	The system units were mounted longitudinally, facing upward (unlike the [[BA11 mounting box]], where they had been facing down); they were generally mounted with the [[DEC edge connector contact identification\|A-row connectors]] at the back, next to the power distribution panel.		The system units were mounted longitudinally, facing upward (unlike the [[BA11 mounting box]], where they had been facing down); they were generally mounted with the [[DEC edge connector contact identification\|A-row connectors]] at the back, next to the power distribution panel.

			Cooling fans mounted on the front face of the [[power supply]] passed air both over the boards, and then through the power regulators.

			The BA11-K's dimensions were 10-1/2" high, 17-1/8" wide, and 17-1/4" deep without the power supply; with the H765 added, it was 26-1/2" deep, and weighed 87 lbs (without any backplanes or boards).

			The BA11-K was also used in custom configurations to hold systems such as the [[MJ11 memory system]] and [[MK11 memory system]], with a custom backplane and [[power harness]]. Technically, these boxes were not BA11-K's, but they share physical hardware, basic power system, etc with the BA11-K.

			==Power==

	The BA11-K came with the [[H765 Power System]], which was a separate unit, mounted transversely at the rear of the box; it contained up to four [[DEC standard modular regulators]]. The [[power harness]] from it ended in a power distribution panel containing standard [[DEC power distribution connectors]].		The BA11-K came with the [[H765 Power System]], which was a separate unit, mounted transversely at the rear of the box; it contained up to four [[DEC standard modular regulators]]. The [[power harness]] from it ended in a power distribution panel containing standard [[DEC power distribution connectors]].

	~~Cooling fans mounted~~ on the ~~front face~~ of the ~~H765 passed air both over~~ the ~~boards~~, and ~~then through~~ the ~~power regulators~~.		One the back it had a pair of connections to the standard DEC [[Remote Switching Control Bus]], so it could either turn other units off and on with a power switch on its front panel, or be remotely controlled from another box.

			==Mounting slides==

			[[Image:BA11-KOldSide.jpg\|200px\|thumb\|lright\|A BA11-K from the side, showing the older type mounting slide inner]]

			Like many other PDP-11 boxes, it was rack-mounted using multi-part slides. The 'inner' part of the slide is bolted to the box; the 'outer' is attached to the rack. The inner slides into the outer; a releasable latch prevents it being fully withdrawn accidentally. Many BA11-K units are now found with the inners still in place, but the outers have been discarded (often left with the rack they were mounted in).

			Older units had 'Chassis Trak' slides from General Devices, coated in a zinc-phosphate 'Pakerize' coating (show in the image to the right). If the inners are there, General Devices still makes another slide whose outers are compatible to those used with the BA11-D, and those are readily available (albeit fairly expensive). The General Devices 'Chassis Trak' part number for that is C-230-S-122 (22"); the -124 (24") is sometimes slightly cheaper, and can easily be modified to fit an H960 rack, by drilling two extra holes. The safety latch location does not match, but the hole in the outer for it can be modified to fit.

	~~The~~ BA11-K~~'s dimensions were 10~~-~~1/2" high~~, ~~17-1/8" wide~~, ~~and 17-1/4" deep without~~ the ~~power supply~~; ~~with~~ the ~~H765 added~~, ~~it was 26~~-~~1/2" deep~~, ~~and weighed 87 lbs (without any backplanes or boards)~~.		[[Image:BA11-KNewSide.jpg\|200px\|thumb\|left\|A BA11-K from the side, showing the newer type mounting slide inner]]

			Newer units had silvery zinc-plated slides (shown to the left), which used a smaller rotational controller; the manufacturer is unknown.

			If the outers are missing, the Chassis Trak slides above can be used; their inners do not have the rotational capability, but the mounting holes in the inners match the locations of pre-mounted swage nuts in the BA11-K's side sheets, so the inner can be simply bolted straight on. The slide will be in a different location, vertically, though.

	The ~~BA11-K was also used in custom configurations~~ to ~~hold systems such as the [[MJ11 memory system]] and [[MK11 memory system]]~~, ~~with a custom backplane and [[power harness]]. Technically, these boxes were~~ not ~~BA11-K~~'~~s, but they share physical hardware, basic power system, etc with~~ the ~~BA11-K~~.		'''''Note:''''' The two types of slides use large pivot bolts/pins that ''appear'' to be identical, but they are '''not'''! The shoulder on the ones for the later kind of slides are not as deep as those on the earlier kind.

	[[Category: DEC Hardware]]		[[Category: DEC Hardware]]

Jnc: Avoid redir after move

2018-09-26T21:42:29Z

Avoid redir after move

← Older revision		Revision as of 21:42, 26 September 2018
Line 9:		Line 9:
	The system units were mounted longitudinally, facing upward (unlike the [[BA11 mounting box]], where they had been facing down); they were generally mounted with the [[DEC edge connector contact identification\|A-row connectors]] at the back, next to the power distribution panel.		The system units were mounted longitudinally, facing upward (unlike the [[BA11 mounting box]], where they had been facing down); they were generally mounted with the [[DEC edge connector contact identification\|A-row connectors]] at the back, next to the power distribution panel.

	The BA11-K came with the [[H765 Power System]], which was a separate unit, mounted transversely at the rear of the box; it contained up to four [[DEC standard modular ~~regulator~~]]s. The [[power harness]] from it ended in a power distribution panel containing standard [[DEC power distribution connectors]].		The BA11-K came with the [[H765 Power System]], which was a separate unit, mounted transversely at the rear of the box; it contained up to four [[DEC standard modular regulators]]. The [[power harness]] from it ended in a power distribution panel containing standard [[DEC power distribution connectors]].

	Cooling fans mounted on the front face of the H765 passed air both over the boards, and then through the power regulators.		Cooling fans mounted on the front face of the H765 passed air both over the boards, and then through the power regulators.

Jnc: Link connector info

2018-09-20T22:09:14Z

Link connector info

← Older revision		Revision as of 22:09, 20 September 2018
Line 9:		Line 9:
	The system units were mounted longitudinally, facing upward (unlike the [[BA11 mounting box]], where they had been facing down); they were generally mounted with the [[DEC edge connector contact identification\|A-row connectors]] at the back, next to the power distribution panel.		The system units were mounted longitudinally, facing upward (unlike the [[BA11 mounting box]], where they had been facing down); they were generally mounted with the [[DEC edge connector contact identification\|A-row connectors]] at the back, next to the power distribution panel.

	The BA11-K came with the [[H765 Power System]], which was a separate unit, mounted transversely at the rear of the box; it contained up to four [[DEC standard modular regulator]]s. Cooling fans mounted on the front face of the H765 passed air both over the boards, and then through the power regulators.		The BA11-K came with the [[H765 Power System]], which was a separate unit, mounted transversely at the rear of the box; it contained up to four [[DEC standard modular regulator]]s. The [[power harness]] from it ended in a power distribution panel containing standard [[DEC power distribution connectors]].

			Cooling fans mounted on the front face of the H765 passed air both over the boards, and then through the power regulators.

	The BA11-K's dimensions were 10-1/2" high, 17-1/8" wide, and 17-1/4" deep without the power supply; with the H765 added, it was 26-1/2" deep, and weighed 87 lbs (without any backplanes or boards).		The BA11-K's dimensions were 10-1/2" high, 17-1/8" wide, and 17-1/4" deep without the power supply; with the H765 added, it was 26-1/2" deep, and weighed 87 lbs (without any backplanes or boards).

Jnc: Correct cat

2018-09-20T00:44:23Z

Correct cat

← Older revision		Revision as of 00:44, 20 September 2018
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	The BA11-K was also used in custom configurations to hold systems such as the [[MJ11 memory system]] and [[MK11 memory system]], with a custom backplane and [[power harness]]. Technically, these boxes were not BA11-K's, but they share physical hardware, basic power system, etc with the BA11-K.		The BA11-K was also used in custom configurations to hold systems such as the [[MJ11 memory system]] and [[MK11 memory system]], with a custom backplane and [[power harness]]. Technically, these boxes were not BA11-K's, but they share physical hardware, basic power system, etc with the BA11-K.

	[[Category: ~~PDP-11s~~]]		[[Category: DEC Hardware]]

Jnc: Mention use with other configs

2018-09-19T02:21:20Z

Mention use with other configs

← Older revision		Revision as of 02:21, 19 September 2018
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	The BA11-K's dimensions were 10-1/2" high, 17-1/8" wide, and 17-1/4" deep without the power supply; with the H765 added, it was 26-1/2" deep, and weighed 87 lbs (without any backplanes or boards).		The BA11-K's dimensions were 10-1/2" high, 17-1/8" wide, and 17-1/4" deep without the power supply; with the H765 added, it was 26-1/2" deep, and weighed 87 lbs (without any backplanes or boards).

			The BA11-K was also used in custom configurations to hold systems such as the [[MJ11 memory system]] and [[MK11 memory system]], with a custom backplane and [[power harness]]. Technically, these boxes were not BA11-K's, but they share physical hardware, basic power system, etc with the BA11-K.

			[[Category: PDP-11s]]

Jnc: Better link

2018-07-16T01:23:16Z

Better link

← Older revision		Revision as of 01:23, 16 July 2018
Line 7:		Line 7:
	In the [[PDP-11/04]] and [[PDP-11/34]] (the models which used this mounting box to hold the CPU) the front panels were the [[KY11-LA Operator's Console]] and the [[KY11-LB Programmer's Console]] (the same for both CPU's).		In the [[PDP-11/04]] and [[PDP-11/34]] (the models which used this mounting box to hold the CPU) the front panels were the [[KY11-LA Operator's Console]] and the [[KY11-LB Programmer's Console]] (the same for both CPU's).

	The system units were mounted longitudinally, facing upward (unlike the [[BA11 mounting box]], where they had been facing down); they were generally mounted with the [[DEC ~~card form factor~~\|A-row connectors]] at the back, next to the power distribution panel.		The system units were mounted longitudinally, facing upward (unlike the [[BA11 mounting box]], where they had been facing down); they were generally mounted with the [[DEC edge connector contact identification\|A-row connectors]] at the back, next to the power distribution panel.

	The BA11-K came with the [[H765 Power System]], which was a separate unit, mounted transversely at the rear of the box; it contained up to four [[DEC standard modular regulator]]s. Cooling fans mounted on the front face of the H765 passed air both over the boards, and then through the power regulators.		The BA11-K came with the [[H765 Power System]], which was a separate unit, mounted transversely at the rear of the box; it contained up to four [[DEC standard modular regulator]]s. Cooling fans mounted on the front face of the H765 passed air both over the boards, and then through the power regulators.

	The BA11-K's dimensions were 10-1/2" high, 17-1/8" wide, and 17-1/4" deep without the power supply; with the H765 added, it was 26-1/2" deep, and weighed 87 lbs (without any backplanes or boards).		The BA11-K's dimensions were 10-1/2" high, 17-1/8" wide, and 17-1/4" deep without the power supply; with the H765 added, it was 26-1/2" deep, and weighed 87 lbs (without any backplanes or boards).

Jnc: typos

2018-07-16T00:59:59Z

typos

← Older revision		Revision as of 00:59, 16 July 2018
Line 9:		Line 9:
	The system units were mounted longitudinally, facing upward (unlike the [[BA11 mounting box]], where they had been facing down); they were generally mounted with the [[DEC card form factor\|A-row connectors]] at the back, next to the power distribution panel.		The system units were mounted longitudinally, facing upward (unlike the [[BA11 mounting box]], where they had been facing down); they were generally mounted with the [[DEC card form factor\|A-row connectors]] at the back, next to the power distribution panel.

	The BA11-K came with the [[H765 Power System]]~~. It~~ was a separate unit, mounted transversely at the rear of the box~~. It~~ contained up to four [[DEC standard modular regulator]]s. Cooling fans mounted on the front face of the H765 passed air both over the boards, and then through the power ~~supplies~~.		The BA11-K came with the [[H765 Power System]], which was a separate unit, mounted transversely at the rear of the box; it contained up to four [[DEC standard modular regulator]]s. Cooling fans mounted on the front face of the H765 passed air both over the boards, and then through the power regulators.

	The BA11-K's dimensions were 10-1/2" high, 17-1/8" wide, and 17-1/4" deep without the power supply; with the H765 added, it was 26-1/2" deep, and weighed 87 lbs (without ~~and~~ backplanes or boards).		The BA11-K's dimensions were 10-1/2" high, 17-1/8" wide, and 17-1/4" deep without the power supply; with the H765 added, it was 26-1/2" deep, and weighed 87 lbs (without any backplanes or boards).

Jnc: Only one set of fans

2018-07-12T13:18:29Z

Only one set of fans

← Older revision		Revision as of 13:18, 12 July 2018
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	The '''BA11-K mounting box''' was for many years the standard [[DEC card form factor\|hex]] [[system unit]] [[backplane]] mounting box for the [[H960 rack\|H960]] series of 19"-wide racks produced by [[Digital Equipment Corporation\|DEC]], the [[BA11 mounting boxes]]. It could contain up to 5 standard size (4-slot) system units.		The '''BA11-K mounting box''' was for many years the standard [[DEC card form factor\|hex]] [[system unit]] [[backplane]] mounting box for the [[H960 rack\|H960]] series of 19"-wide racks produced by [[Digital Equipment Corporation\|DEC]], one of the [[BA11 mounting boxes]]. It could contain up to 5 standard size (4-slot) system units.

	The H960 racks provided 63" of vertical mounting space, divided into units of 10-1/2", which were further subdividable into a pair of 5-1/4" spaces. The 10-1/2" tall BA11-K mounting box was designed for these spaces.		The H960 racks provided 63" of vertical mounting space, divided into units of 10-1/2", which were further subdividable into a pair of 5-1/4" spaces. The 10-1/2" tall BA11-K mounting box was designed for these spaces.
Line 9:		Line 9:
	The system units were mounted longitudinally, facing upward (unlike the [[BA11 mounting box]], where they had been facing down); they were generally mounted with the [[DEC card form factor\|A-row connectors]] at the back, next to the power distribution panel.		The system units were mounted longitudinally, facing upward (unlike the [[BA11 mounting box]], where they had been facing down); they were generally mounted with the [[DEC card form factor\|A-row connectors]] at the back, next to the power distribution panel.

	The BA11-K came with the [[H765 Power ~~Supply~~]]. ~~The supply~~ was a separate unit, mounted transversely at the rear of the box. It contained up to four [[DEC standard modular regulator]]s. Cooling fans ~~were~~ mounted at the front of the ~~box;~~ the ~~air was~~ then ~~passed~~ through the power supplies ~~by fans mounted in the H765~~.		The BA11-K came with the [[H765 Power System]]. It was a separate unit, mounted transversely at the rear of the box. It contained up to four [[DEC standard modular regulator]]s. Cooling fans mounted on the front face of the H765 passed air both over the boards, and then through the power supplies.

	The BA11-K's dimensions were 10-1/2" high, 17-1/8" wide, and 17-1/4" deep without the power supply; with the H765 added, it was 26-1/2" deep, and weighed 87 lbs (without and backplanes or boards).		The BA11-K's dimensions were 10-1/2" high, 17-1/8" wide, and 17-1/4" deep without the power supply; with the H765 added, it was 26-1/2" deep, and weighed 87 lbs (without and backplanes or boards).

Jnc: Jnc moved page BA11-K to BA11-K mounting box: use canonical name

2017-10-30T11:22:08Z

Jnc moved page BA11-K to BA11-K mounting box: use canonical name

← Older revision		Revision as of 11:22, 30 October 2017
(No difference)