Digital Equipment BA11-K User manual

BA11-K mounting box
manual

BA11.,.K mounting box
manual
EK-BAI1K-MM-002
digital equipment corporation 0 maynard. massachusetts

Copyright © 1975 by Digital Equipment Corporation
The material in this manual is for informational
purposes and is subject to change without notice.
Digital Equipment Corporation assumes no respon-
sibility for any errors which may appear in this
manual.
Printed
in U.S.A.
The following are trademarks of Digital Equipment
Corporation, Maynard, Massachusetts:
DEC
FLIP CHIP
DIGITAL
UNIBUS
PDP
FOCAL
COMPUTER LAB
1st Edition, September 1974
2nd Edition, February 1975

CHAPTER 1
1.1
1.2
1.2.1
1.2.2
1.3
1.3.1
1.3.2
1.3.3
CHAPTER 2
2.1
2.1.1
2.1.2
2.1.3
2.1.4
2.2
2.3
2.4
2.5
2.6
CHAPTER 3
3.1
3.2
3.2.1
3.2.2
3.2.3
3.2.4
3.2.5
3.2.6
3.3
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.4.5
3.4.6
3.4.7
CHAPIER4
4.1
4.2
4.2.l
4.2.2
CONTENTS
BAll-K CHARACTERISTICS AND SPECIFICATIONS
GENERAL ........... .
PHYSICAL CHARACTERISTICS
BAI1-K Characteristics
H765 Power System ....
ELECTRICAL SPECIFICATIONS
BAII-KE, BAII-KF Input Power Electrical Specifications
BA1l-K Output Power Specifications
Power Up, Power Down Characteristics ........ .
SYSTEM UNITS, OPTIONS, HARNESSES, AND INSTALLATION INFORMATION
GENERAL ............... .
Introduction to System Units
BAII-K System Unit Configuration
Unibus Pin Assignments
System Unit Installation ..... .
OPTION CONFIGURATIONS ..... .
COMPUTER OPTION AND MAIN POWER WIRE HARNESSES
POWER DISTRIBUTION WIRE
COLOR CODING
UNIBUS AND COMMUNICATION CABLE ROUTING .
CABINET AND SLIDE MOUNTING SPECIFICATIONS
H765 POWER SYSTEM
INTRODUCTION . . . . . . . . .
MECHANICAL DESCRIPTION
H744, H745, and H754 Regulators
5411086 Regulator ..... .
7010014 Transformer Assembly
7009811-1, -2 AC Input Box . .
1211714 Box Fan ...... .
5410864 Power Distribution Board
SYSTEM FUNCTIONAL DESCRIPTION
SYSTEM CIRCUIT DESCRIPTION
AC
Input Box .....
Transformer Assembly
5411086 Regulator
H744 +5 V Regulator
H745 -15 V Regulator
H754 +20, -5 V Regulator
Power Distribution Board
MAINTENANCE
MAINTENANCE EQUIPMENT
REQUIRED
PREVENTIVE MAINTENANCE
General ....
PhYSical Checks
iii
Page
1-1
1-1
1-1
1-2
1-4
1-4
1-6
1-7
2-1
2-1
2-3
2-4
2-4
2-6
2-10
· 2-10
2-11
· 2-12
3-1
3-1
3-1
3-1
3-1
3-1
3-1
3-1
3-2
3-2
3-2
3-2
3-7
3-9
3-12
· 3-12
· 3-14
4-1
4-2
4-2
4-2

4.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.4.1
4.3.4.2
4.3.4.3
4.3.4.4
4.4
4.4.1
4.4.2
4.4.3
4.4.4
4.4.5
4.4.6
4.4.7
4.4.8
CHAPTERS
5.1
5.2
5.3
5.4
5.4.1
5.4.2
5.5
5.6
Figure No.
1-1
1-2
1-3
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
3-1
3-2
CONTENTS (Cont)
MAINTENANCE PROCEDURE
........ .
H765 Power System Fault Isolation
... .
Voltage Regulator Checks and Adjustments
Voltage Regulator Troubleshooting
Regulator Bench Test Procedures (H744, H745, and H754)
Initial Tests
....... .
Output Short Circuit Tests . . . . . . . .
Testing a
"Dead" Regulator ...... .
Testing a Voltage Regulator After Repairs
H765 POWER SYSTEM SUBASSEMBLY REMOVAL PROCEDURE
Introduction ..................... .
H765 Power System Access Procedure (Figure 4-4)
H744, H745, and H754 Regulator Removal (Figure 4-5)
AC Input Box and 5411086 Regulator Removal
Fan Removal . . . . . . . . . . .
Transformer Assembly Removal .
Power Distribution Board Removal
Regulator Installation
UNPACKING AND INSTALLATION
INTRODUCTION ....... .
UNPACKING
....... .
INSTALLATION IN A CABINET
AC POWER SUPPLY CONNECTION
Connecting to 115 Vac or 230 Vac
Quality of AC Power Source .
REMOTE POWER CONTROL ...
INSTALLATION CERTIFICATION
ILLUSTRATIONS
Title
BA11-K Mounting Box
(Top Covers Removed)
BA11KPhysical Layout
....... .
Physical Layout of H765 Power Supply
Standard Unibus Connection
BBll Single System Unit ...... .
System Unit Configurations ..... .
BA11-K with Double System Unit (Wire Wrap Side)
Cable Routing ................. .
BA11-K and CPU Cabinet Mounting Specification
Accuride Slide Mounting Specification . .
Chassis-Trak Slide Mounting Specification
Power System Functional Block Diagram
Power System Detailed Diagram .....
iv
Page
4-2
4-2
4-5
4-5
4-6
4-6
4-6
4-6
4-7
4-8
4-8
4-8
· 4-10
· 4-11
4-12
· 4-13
· 4-16
· 4-16
5-1
5-1
5-1
5-1
5-1
5-1
5-3
5-3
Page
1-1
1-2
1-6
2-1
2-2
2-3
2-5
. 2-11
. 2-12
2-13
2-13
3-3
3-4

Figure No.
3-3
34
3-5
3-6
3-7
3-8
3-9
3-10
3-11
3-12
4-1
4-2
4-3
44
4-5
4-6
4-7
4-8
4-9
4-10
5-1
5-2
5-3
Table
No.
1-1
1-2
1-3
14
1-5
1-6
2-1
2-2
2-3
24
2-5
2-6
2-7
4-1
4-2
4-3
ILLUSTRATIONS (Cont)
115 V Power Configuration
230 V Power Configuration
Power Control Simplified Diagram
5411086 Block Diagram .....
5411086 Regulator Waveforms
Title
5411086 Power Up and Power Down
Voltage Regulator El, Simplified Diagram
H744 Regulator Waveforms
Power Distribution Board
H744 Connection Diagram
H765 Fault Isolation Flowchart
Regulator Adjustments . . . . .
Typical Voltage Regulator
Output Waveforms
H765 Power System Access (Maintenance POSition)
Regulator Removal
H765 Power System
Fan Removal .....
Transformer Assembly
Transformer Assembly Removal
Power Distribution Board
BAII-K Packaging ...
Connector SpeCifications
Power Control
.....
TABLES
Title
BAI1-K Physical and Environmental Characteristics
H765 Power SystemPhysical Characteristics . . ..
BAII-KE Input Power Electrical Specifications
BAII-KF Input Power Electrical Specifications
BAII-K Output Power Characteristics ..
Power Up and Power Down Characteristics
Unibus Pin Assignments
(By Pin Numbers)
SU Installation Requirements
System Unit Combinations . . . . .
PDP-II Family Models and Options
PDP-11 Family Options
Option Harnesses . . . . . . . . . .
Power Distribution
Wire Coding ..
Field Service Maintenance Equipment Required
Regulator Specifications
............ .
H744, H745, H754 Voltage Regulator Troubleshooting Chart .
v
Page
3-5
3-5
3-5
3-6
3-7
3-9
· 3-10
· 3-11
· 3-13
· 3-14
4-3
44
4-7
4-9
· 4-10
· 4-11
· 4-12
· 4-13
· 4-14
· 4-16
5-2
5-3
5-3
Page
1-3 .
1-3
1-4
1-5
1-6
1-7
2-4
2-4
2-6
2-7
2-8
· 2-10
· 2-10
4-1
44
4-5

This manual describes the general specifications, installa-
tion, theory of operation, and maintenance procedures that
apply to the BAll-K mounting box. The basic BAll-K
includes a 10-1/2 inch mounting chassis and power system
that
is similar to the 11/05-S and 11/35-S chassis and power
system. This manual
is also used for maintaining and
troubleshooting the PDP-ll/05-S and PDP-ll/35-S power
system. The manual is organized
as follows:
Chapter 1 describes the characteristics and specifications
of
the BAll-K.
INTRODUCTION.
Chapter 2 describes the system unit configurations, options,
and option guidelines applicable to the BAII-K.
Chapter 3 contains a mechanical description
of the BAII-K
and its contents, and describes the theory of operation.
Chapter 4 describes the BAII-K power system maintenance
procedures, . and the replacement procedures for failed
items.
Chapter 5 details unpacking and BAII-K installation.

7111-24
Figure 1-1 BAll-K Mounting Box (Top Covers Removed)

CHAPTER 1
BAII-K CHARACTERISTICS
AND SPECIFICATIONS
1.1 GENERAL
The BA11-K
is a 10-1/2 inch expander box which is
mounted in a standard 19-inch rack. It is designed to house
the Digital standard system
units that make up a PDP-11
expansion system. The expansion system (expander box)
can contain memory, peripheral controllers, devices, or
options compatible with the PDP-II family. The BA11-K
is
modular in design enabling a high degree of serviceability
with minimum downtime.
The BA11-K can accept a maximum
of five system units
proViding a great degree of flexibility in selecting a system
unit configuration (e.g., single and double system units may
be mixed).
1-1
There are two basic versions of the mounting box: the
BA11-KE for 115 Vac, and the
BAll-KF for 230 Vac.
These two variations are the result of two ac input boxes,
one for each line voltage. The two
ac input boxes can be
interchanged within the same BA11-K mounting box with
no other modifications.
1.2 PHYSICAL CHARACTERISTICS
1.2.1 BAll-K Characteristics
Figure 1-1 shows the BA11-K mounted in a rack. Basically
it
is composed of a main chassis and an H765 power
system. The BA11-KE and BA11-KF
are physically identi-
cal except for the ac input box in the H765. The BA11-KE
(115 Vac) contains a 7009811-1 ac input box; the
BA11-KF (230 Vac) contains a 7009811-2
ac input box.

J
Figure 1-2 is the top view of the physical layout of the
BAll-K. The mechanical and environmental specifications
are described in Table 1-1.
1.2.2 H765 Power System
The H765 power system
is self-contained in its own chassis.
It is secured to the main BA ll-K chassis with six screws.
Two are special-purpose screws which function
as hinges,
enabling the H765
to be swung away from the main chassis
during maintenance. The H765 power system contains
five
regulators, two fans, an ac input box, a transformer
assembly, and a power distribution board. Four
of the
regulators are self-contained
DEC standard modular types.
The fifth regulator
is a regulator board that is mounted in
the
ac input box. Paragraph 4.4 describes the removal
procedures for the H765 power system. Table 1-2 lists the
H765 Power System's physical characteristics.
MAIN CHASSIS
MODULE GUIDES
H765 POWER SYSTEM H765 POWER
SYSTEM
COVER
POP PANEL
MOUNTING
BRACKET
CABLE CLAMP
Top View -Main Chassis Cover Removed
Figure 1-2 BAII-K Physical Layout
1-2
7111-8

Table 1-1
BAII-K Physical and Environmental Characteristics
Item
Chassis size (with H765 power system and pop panel)
Chassis size (with H765 power system without console
panel and bezel)
Chassis size (without H765 power system, console
panel and bezel)
BAll-K expander box chassis weight (without system
units)
H765 power system size
Slide extension (three-section slide)
Slide weight capacity (BAII-K fully extended)
Three-stop slide
Fan air movement direction
Module slots
Operating temperature range at inlet to box
Operating humidity
Cooling efficiency for both fans at 90 Vac, 50 Hz
Description
10.44 in. high, 17.12 in. wide, 26.53 in. deep
10.44 in. high, 17.12
in. wide, 25 in. deep
10.44 in. high, 17.12 in. wide, 17.25 in. deep
87lb
10.38 in. high, 17.12 in. wide, 7.75 in. deep
27 in. maximum
150lb
Positions: Horizontal, 45 degrees, and 90 degrees
(front panel facing
up)
Horizontally toward rear of BAII-K
22 maximum (2 double system units and 1 single
system unit) using
DEC standard configuration
backplanes
410 F-
122° F
(50 C-50° C)
10 to 95% (no condensation)
Temperature
rise no greater than 180 F (100 C)
from inlet air temperature to exhaust air
Table 1-2
H765 Power System Physical Characteristics
Item
H765 power system contents
Fan size
Fan type
Fan capacity at 115 V, 50 Hz
Fan efficiency at
90 Vac, 50 Hz
7010014 transformer assembly weight
Description
H744 regulators (two) (+5 V)
H745 regulator (-IS V)
H754 regulator (+20 V, -5 V)
5411086 regulator (+15 V)*
7010014 transformer assembly
7009811-1 or -2 ac input box with 5410993
power control board
5410864 power distribution board
1211714 box fans (two)
6 in.
Ball bearing
260 cfm at 0 static pressure
60%
251b
'Early versions of the BAll-K may contain a 5409730-YA regulator in place of the 5411086 regulator.
1-3

1.3 ELECTRICAL SPECIFICATIONS
1.3.1
BAll-KE, BAll-KF Input Power Electrical Specifi-
cations
indicates that the input voltage is 115 Vac and that a
7009811-1 ac input box is installed in the H765 power
system. A BAll-KF expander box designation indicates
that the input voltage is 230 Vac and that a 7009811-2 ac
input box is installed in the H765 power system. Tables 1-3
and 1-4 contain the input power electrical specifications of
the BAll-KE and KF, respectively.
The BAl1-KE and KF are electrically identical except for
the
ac input box. A BAl1-KE expander box designation
Table
1-3
BAll-KE Input Power Electrical Specifications
Parameter
Input power
Inrush current
Input power
Input current
Circuit breaker rating
Power factor
Conducted Noise (noise on ac line)
Transients
CWNoise
RF field susceptibility
Power fail
Specification
90-132 Vac, 115 Vac nominal, 47--63 Hz, single phase
175 A peak for 10 ms max. at 115 V line voltage
1200 Wmaximum at 115 V nominal line voltage
12 A max at 115 Vac
20 A at 115 Vac
The ratio of input power to apparent power must be greater than
0.85
Single transient without loss of data: 300 V at 0.2 W sec max.
Single transient, survival: 1000 V at 2.5 W
sec max.
Average transient power survival: 0.5 Wmax.
10 KHz - 3
MHz: 3 V rms
3 MHz -500 MHz: 1 V rms
500 MHz -1000 MHz: 0.5 V rms
10 KHz -1000MHz: 1 VIM
H765 power system is capable of withstanding power interruptions
of any magnitude and duration without damage. Storage time of
power supply at low line and full load shall be 20 ms minimum.
Storage time is measured from the time the power outage occurs
until the time the regulator voltages listed in Table
1-5 drop below
their specified regulation limits.
1-4

Table 14
BAII-KF Input Power Electrical Specifications
Parameter
Input power
Imush current
Input power
Input current
Circuit breaker rating
Power factor
Conducted Noise (noise on ac line)
Transients
CWNoise
RF field susceptibility
Power fail
Specification
180 -264 Vac, 230 Vac nominal, 47-63 Hz, single phase
80 A peak for 10 ms max. at 230 Vac line voltage
1200 Wmaximum at 230 Vac nominal line voltage
6 A max
at 230 Vac
10 A at 230 Vac
The ratio of input power to apparent power shall be greater than
0.85
Single transient, without loss of data: 300 V at 0.2 W sec
Single transient, survival: 1000 V at 2.5 W sec max.
Average transient power survival: 0.5 Wmaximum
10KHz -3 MHz: 3 Vrms
3 MHz - 50 MHz: 1 V rms
500 MHz -1000 MHz: 0.5 V rms
10 KHz -1000 MHz: 1 VIM
H765 power system is capable of withstanding power interruptions
of any magnitude and duration without damage. Storage time of
power supply at lowline and full load shall be 20 ms minimum.
Storage time
is measured from the time the regulator voltages
listed in Table 1-5 drop below their specified regulation limits.
1-5

I
1.3.2 BAll-K Output Power Specifications
The BAll-K output power is detennined by the rating of
the regulators (Figure 1-3) listed in Table 1-5. Due to the
great degree of flexibility and options available, each
BAll-K configuration must be analyzed for total load
requirements. Once the current drain of the options is
Regulator
H745 (No. 1)
H744 (No.2)
H744 (No.3)
H754 (No.4)
5411086**
FRONT OF
MOUNTING
BOX
POWER DISTRIBUTION
BOARD
--~...!J.':"
REGU LATOR '*' 2
H744
REGULATOR '*' I
H745
AIR VENTS
TRANSFORMER
ASSEMBLY
AC INPUT BOX
control board and
5411086 regulator are
internol to the ac input box
11-2576
Figure 1-3 Physical Layout of H765 Power Supply
Table 1-5
BAII-K Output Power Characteristics
Voltage and Regulation Output Current Power Distribution Peak-to-Peak Ripple
(max) Board Jacks (max)
-15 Vdc ±750 mV 10 A 13, J5, 17, J9,
111 450mV
+5 Vdc ± 250mV 25 A J9,111
200mV
+5 Vdc ± 250mV
25 A 13, J5, 17
200mV
+20Vdc ± 1 V 8A
13, J5, 17, J9, 111 5%*
-5 Vdc ±250 mV lA-8At
5%*
+15 Vdc ± 1.5 V 4A
13, J5, 17, J9, 111
3%
AC La, DC La LTCL
-
J4,J6,J8,JI0,JI2
-
* At backplane. Typical ripple ±3%.
**Eaxly versions of the BA11-K may contain a 5409730-YA regulator in place of the 5411086 regulator.
tMaximum
-5 V current is dependent upon +20 V current. It is equal to 1 A plus the current of the +20 V supply, up to a total of 8 A.
1-6

totaled, it should be compared with the output currents
listed in Table 1-5. (See Tables 2-4 and 2-5 for a list of
some of the available options and their load requirements.)
When configuring the expansion system, care must be taken
to ensure that the options do not exceed the current
capabilities of the regulators.
1.3.3 Power Up, Power Down Characteristics
The BAII-K power up and power down characteristics are
determined by regulator 5411086. A complete deSCription
of this regulator, along with a timing diagram, is in Chapter
3. Table 1-6 lists the dynamic and static power up and
power down characteristics of regulator 5411086.
Table 1-6
Power Up and Power Down Characteristics
Parameter
Dynamic Performance (Figure 3-8)
BAII-K Power Down
BAll-K Power Up
Static Performance at fu1lload*
BAII-K Power Down
BAII-K Power Up
Specification
4 ms min from
ac Power Down to AC LO L asserted
5 ms min from AC LO L asserted to DC LO L asserted
1ms min from + 15 V to DC LO L negated
2 ms nominal from
DC LO L negated to AC LO L
negated
AC LO L drops to LOW: 83-88 Vac
DC LO L drops to LOW: 73-78 Vac
DC LO L goes to HIGH: 75-80 Vac
AC LO L goes to HIGH: 85-90 Vac
*Response to changing ac input (less than lO!V second).
1-7

I
CHAPTER 2
SYSTEM UNITS, OPTIONS, HARNESSES,
AND INSTALLATION INFORMATION
2.1 GENERAL
This chapter details the configuration and expansion
capabilities of the BAll-K mounting box. The configura-
tion and expansion information should not only
be used for
initial installation, but also used
as an ongoing aid when
adding or modifying system units. The following paragraphs
describe the items listed below:
DEC system units
BAII-K system unit configurations
System unit installation
Option configurations
Harness information
Cable routing
Cabinet mounting specifications
2.1.1 Introduction to System Units
The system unit is the basic mounting assembly for PDP-II
logic. Logic module and cable connectors plug into the
module side
of the system unit. The other side of the
system unit contains either backplane wiring or etched
board wiring which connects the pins together. A system
unit connects to another system via the Unibus. Four slots
of a system unit are reserved for Unibus connections. These
are slots A and B
of the first and last slots as shown in
Figure 2-1.
The following types
of system units are utilized in the
PDP-ll system.
Dedicated -Dedicated system units are prewired and
tested for specific functions such
as processor, memory, or
disk controller.
2-1
General Purpose -General purpose system units use a
standard backplane wiring which has been established for
the controllers of small peripherals, such
as printers, card
readers, and terminals. Each system unit has four small
peripheral controller (SPC) slots with wiring provided for
signal conditioning options. A variety of general purpose
interfaces, communications devices, and options are
avail-
able for use in. these SPC slots.
Blank -Unwired single system units are made available for
OEM use, enabling custom application.
UNIBUS OUT
OR
TERMINATOR-
432 I
c c
~
Z
III
CD A
c
~ ...
C/)r--
0 0
0
~ B
z
z z
C
0
E
F
UNIBUS
IN
4 SLOT BACKPLANE
(SINGLE SYSTEM UNIT)
MODULE SIDE
,,- 2758
Figure 2-1 Standard Unibus Connection

The BBII blank mounting panel (Figure 2-2) is a prewired
system
unit (SU) designed for general interfacing. It is
prewired only for the Unibus and power. The unit contains
three 288-pin blocks assembled end-to-end in a casting
which can be mounted in the va rious PDP-II assembly
units.
Bus and power connectors, described below, use only
6
of the module slots, leaving 18 slots available for
customer use.
The
BBII is wired to accept the Unibus in slots Al and B 1.
This connection can be made with an M920 Unibus
connector or a
BCIIA Unibus cable assembly. All bus
signals, including grant signals,
are wired directly to
4
3
2
1
4
3
2
1
A B c
A B C
UNIBUS CONN
POWER
RESERVED
UNIBUS CONN
corresponding pins in slots A4 and B4. From this point, the
Unibus can
be continued to the next unit by using an M920
or BCllA. If the BBII is the last unit on the bus, slot
A4-B4 accepts the M930 bus terminator module.
The bus grant signals are wired through the
BBIL The se
grant signal wires must be removed and replaced with wires
to and from the user's control circuits for the grant
le vels
used by the customer-supplied device.
Power for +5 V is distributed to all A2 pins; -15 V is
distributed
to all B2 pins except in slots AI, B 1, A4, and
B4; and ground is maintained through the frame and po wer
connector
on pins C2 and Tl of all slots.
o E F
D E F
11- 2741
Figure 2-2 BBII Single System Unit
2-2