The DD11-DK and DD11-CK backplanes

The DD11-DK backplane

The DD11-CK backplane

The DD11-DK backplane is a generic 9 slot Unibus backplane:

The DD11-DK on the bench with the Unibone at the left and the UniProbe at the right. The tall card standing in the middle is an NPG and bus grant continuity board, with four G727A grant cards in front of it.

It has the following configuration:

	A	C
9	UNIBUS	SPC
8	Modified UNIBUS	SPC
7	Modified UNIBUS	SPC
6	Modified UNIBUS	SPC
5	Modified UNIBUS	SPC
4	Modified UNIBUS	SPC
3	Modified UNIBUS	SPC
2	Modified UNIBUS	SPC
1	UNIBUS	SPC

The power connectors are configured as follows:

P2 Connector: Amp 15 pin MATE-N-LOC

Pin	AWG	Color	Function	Slot Pins
1	14	red	+5V	AA2, BA2, CA2, DA2, EA2, FA2
2	18	grey	+15V	CU1
3	14	orange	+20V core	AU1, AV1, AV2
4	14	red	+5V	AA2, BA2
5
6
7
8	14	black	GND
9	14	black	GND
10
11
12	14	red	+5VB	BD1
13
14	18	brown	-5V core	BV2
15

P3 Connector: Amp 6 pin MATE-N-LOC

Pin	AWG	Color	Function	Slot Pins
1	14	black	GND
2	18	brown	LTC	CD1
3	18	violet	DCLO	BF2, CN1
4	18	yellow	ACLO	BF1
5
6

P4 Connector: Amp 15 pin MATE-N-LOC

Pin	AWG	Color	Function	Slot Pins
1	14	red	+5V	AA2, BA2, CA2, DA2, EA2, FA2
2
3	14	orange	+20V core	AU1, AV1, AV2
4	14	red	+5V	AA2, BA2, CA2, DA2, EA2, FA2
5
6	18	white	+15VB	AR1
7
8	14	black	GND
9	14	black	GND
10
11
12
13	18	blue	-15V	CB2, CC2, CD2, CE2, CF2
14
15	18	green	-15VB	AS1

Connecting +5V to this backplane can be done as follows, on P2:

P2 with the +5V feed on red and ground on black. Both 5V pins and both grounds are used, because a single pin will not carry the current.

Make sure this is P2; it should be written on the plug itself, if not take good note of the pin layout.

Connecting -15V (for the Delua controller) must be done on P4, as follows:

P4 with the pins that matter arrowed: two grounds at the top right and -15V at the bottom, which is what the DELUA needs.

The same connector with the clips on, ground black and -15V red, alongside the +5V pair already fitted on P2.

Modified UNIBUS

Modified UNIBUS

This backplane is a generic 4 slot backplane:

The DD11-CK, the four slot version of the same idea, with its power harness leaving at the right-hand end.

The slots are numbered 1 to 4, starting the closest to the edge of the table. Connectors A are to the right; F is to the left. It has the following configuration:

This backplane has two connectors for power:

The first of the CK's two power connectors, with pins 1 and 3 arrowed at the top and 4 below them.

and

The second connector, a six-way with three pins fitted along the bottom row.

Power connector pinout:

Pin	AWG	Color	Function	Slot Pins
1	14	red	+5V	AA2, BA2, CA2, DA2, EA2, FA2
2	18	grey	+15V	CU1
3		orange
4	14	red	+5V	AA2, BA2
5		white
6
7	14	black	GND
8	14	black	GND
9
10
11
12		red
13	18	blue	-15V	CB2, CC2, CD2, CE2, CF2
14		brown
15		green