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Document:	H720 psu&mount.box manual part-2
Order Number:	XX-0ABE1-B2
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Pages:	12
Original Filename:	H720%20psu&mount.box%20manual%20part-2.tif

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CHAPTER 3
MOUNTING BOX

3.1 SCOPE
The PDP-11 System is modular in concept and consists of a number of basic building blocks, known as system
units, that are housed in a mounting box. This section discusses only the basic PDP-11 Mounting Box. A

description of system units and cables is included in the PDP-11 Handbook, a discussion of interface hardware,

system units, cables, and mountin-g panels is covered in the Unibus Interface Manual; various methods of installing
mounting boxes and descriptions of various system configurations are presented in Chapter 4 of this manual.

3.2 DESCRIPTION
The basic mounting box (see Figure 3-1) is designed to house the system units that make up a PDP-11 System.
The box also includes a space for mounting the H720 System Power Supply. The mounting box contains four
fans for forced air cooling, an insulated top cover to prevent debris from falling into the wire-wrap pins (necessary
because the system units are mounted with the pins up and the modules down), and a foam-lined bottom cover

which is both a module retainer and minimizes module vibration. The bottom cover also serves as part of the air
plenum to ensure adequate cooling. The mounting box is fabricated from zinc-plated steel to resist corrosion; its

dimensions are given in drawing D-UA-11/20-0-0.

3.3 MODELS
There are four models of mounting boxes, each a variation of the box described above. The prime differences
among the four models are the type of front panel used and the mounting hardware.

The basic box is used to house the PDP-11 basic system and includes either a programmer’s console or controller
console as the front panel. The basic box may be supplied with either slides for rack-mounting or a table-top

Figure 3-1

Basic Mounting Box

decorative cabinet.

The extension box is used to house additional system components (expanded memory, interface modules, etc.)
Table 3-1

and includes a blank front panel rather than a console. It also may be supplied with either tilt-slides or a table-top

Mounting Box Models

cover.

The four mounting box models are listed in Table 3-1.

Model No.

Type of Box

Front Panel

Mounting Hardware

BA11-CS
BA11-CC

Basic

Console

Tilt-slides for rack mounting

Basic

Console

Table-top decorative cabinet

BA11-ES

Extension

Blank

Tilt-slides for rack mounting

BA11-EC

Extension

Blank

Table-top decorative cabinet

NOTE: Model number code indicates:

-CS

Type -~ \Type of
of Box

Mounting

CHAPTER 4
INSTALLATION

4.1 INTRODUCTION

Table 4-1
PDP-11 System Configurations

This chapter provides installation information and physical specifications for PDP-11 Systems. Because of the

Configuration Codes

number of possible system configurations, a brief description of all PDP-11 Models is included. Subsequent
paragraphs discuss requirements that must be considered for installation planning and the appropriate installation

Basic

OEM

procedures. The final portion of this chapter includes a series of data sheets that contain specifications and

System

drawings on major hardware components.

4.2 SYSTEM CONFIGURATIONS
Basic PDP-11 Systems are available in 18 different configurations. Configurations differ in mounting methods,

input power requirements, inclusion of a Teletype® , and support functions supplied. Six of these configurations

With

Without

Teletype

Mounting Method

Rack-mountable, with tilt-slides

Table-top model with cover

Rack-mounted in cabinet

represent standard systems, the remaining twelve represent systems designed for use by OEM’s. All 18 configur-

Power Codes

ations are briefly mentioned in Table 4-1; however, only the six standard configurations are described in detail in
Paragraph 4.5. The OEM configurations are physically identical to the standard, with the following exceptions:
a.
b.

Designation

(Power Supply Type)

Input Power Requirements

The Teletype and front panel logo are optional.

115V, 50/60 Hz

Support functions (i.e., one set of documentation per system, training courses, maintenance)

230V, 50/60 Hz

are not included.

NOTES:

1. Model codes are used as follows:
Configuration

In addition to the basic system, customers can order DEC options and peripherals. Figure 4-1 shows a standard

Code

DEC cabinet and indicates preferred position assignments. These assignments have been chosen considering ease

Computer

of control and cable lengths. Any PDP-11 equipment not shown on the drawing may be mounted as desired in

Model

the remainder of the cabinet or in other cabinets. Note that the top and bottom cabinet spaces are not used; the
top space is too high for easy access, and the bottom space does not allow the drawer to be tilted.

4.3 INSTALLATION PLANNING

/Power Supply Code

PDP-11/20-BA
2. Examples are:

PDP-11/20-BA is basic system with Teletype, table-top model, 115V version
PDP-11/20-HB

OEM

System,

without

Teletype,

rack-mountable,

230V version

This section provides electrical, physical, and environmental requirements that must be considered prior to
installation in order to ensure an efficient PDP-11 Computer installation.

®Teletype is the registered trademark of Teletype Corporation.
4-1

4.3.1

Space Requirements

A standard 15-ft, 3-conductor power cable with pigtails is provided on the rear of the PDP-11 System for con-

Access space must be provided at the installation site to accommodate the PDP-11 Sysfem and related peripherals.

nection to the power source. The Teletype unit plugs into the rear of the mounting box.

Space must be adequate to allow access to all doors and panels for maintenance.

All free-standing cabinets require an independent 230V receptacle to provide power for the cabinet fans.

The PDP-11 System is available in rack-mountable, table-top, or
cabinet-mounted configurations.

4.3.4 Cable Requirements

Dimensions for each configur-

ation, including drawings, are given in the data sheets in Paragraph

Whenever an extension mounting box is used, an external Unibus Cable (BC11) is the only signal connection re-

4.5.

quired between mounting boxes. This external Unibus cable may also be used to connect other peripherals to

If customer-supplied cabinets are to be used, the customer

should consult the supplier’s documents to ensure that sufficient

the PDP-11 System. The BC11 Cable Assembly may be purchased in various lengths but the maximum combined

space is allowed for the cabinets.

(internal and external) Unibus cable length is limited to 50 ft.

The minimum service clearance on all standard DEC computer

The length of the Teletype signal cable is such that it restricts the location of the Teletype to within eight ft of

cabinets is 8-3/4 in. at the front and 14-7/8 in. at the back.

the computer.

The Teletype dimensions and service area requirements are

PC11

also given in the appropriate data sheets in Paragraph 4.5 Because

4.4 INSTALLATION

READER/PUNCH

of the Teletype signal cable, the Teletype must be located within

This paragraph covers installation of only the basic PDP-11 System. A section on installation of peripherals and

eight ft of the computer.

PDP—11

options is not required, because of the modular and Unibus concepts of the system. To install a peripheral, for

BASIC MOUNTING BOX

example, it is necessary only to insert the system unit in the mounting box and connect a Unibus cable between

(INCLUDING CONTROL CONSOLE)

4.3.2 Environmental Requirements

the mounting box and peripheral. Details of interface hardware are included in the Unibus Interface Manual.

TABLE (OPTIONAL)

Ambient temperature at the installation site can vary between

50° F and 122° F (10° C and 50° C). To extend the life exoy

pectancy of the system, however, it is recommended that the

Installation of a PDP-11 System requires no special tools or equipment. A fork-lift truck (or other pallet-handling

ALWAYS RESERVED
EXTENSION

equipment) and normal hand tools should be available for receiving and installing the equipment.

MOUNTING BOX

The installation procedure is as follows:

temperature at the installation site be maintained between 70° F

and 85°F (20° C and 30° Q).

Step
1

All exposed surfaces of DEC cabinets and hardware have been

Remove the shipping straps with shears, remove the packing material, and remove
the cardboard crate to disassemble the wooden corner supports.

treated to prevent corrosion, but exposure of systems to ex-

treme humidity for long periods of time should be avoided.

The system operating environment should be within the
relative humidity range of 20% to 95% (non-condensing).

Procedure

Carefully place the PDP-11 Mounting Box (or cabinet, depending on type of
system) in the desired location.

Figure 4-1

PDP-11 Position Assignments

Open the Teletype carton and remove the packing material. Remove the back
cover from the stand. Remove and unwrap the copyholder, chad box, and

4.3.3 Power Requirements

power pack.

Remove the stand from the shipping carton.

Remove the Teletype

- console from the carton, holding it by means of the wooden pallet attached to

Systems with an A power code in the model designation (indicating an H720-A Power Supply) require a source of

the bottom. Snap the power pack in place at the top of the rear side of the

115V (£10%), 50/60 Hz (47 to 63 Hz), single-phase power capable of supplying at least 8A (6A for the computer,

Teletype stand.

2A for the Teletype). Power dissipation is 400W for the computer and 150W for the Teletype. If additional

mounting boxes and power supplies are added to the basic system, additional power receptac]es at the site are

required.

1375 female connector which mates with a male output plug on the power pack.)
Pass the 3-wire power cable and the 7-conductor signal cable (which is terminated

tion to the power source. The Teletype unit plugs into the rear of the PDP-11 Mounting Box and does not require

in a type WO76 cable connector module) through the opening at the lower left-

a separate receptacle.

hand corner of the Teletype stand, then replace the back cover of the stand by
means of the two mounting screws.

All free-standing cabinets require an independent 115V receptacle to provide power for the cabinet fans.
Systems with a B power code in the model designation (indicating an H720-B Power Supply) require a source of
230V (£10%), 50/60 Hz (47 to 63 Hz), single-phase power capable of supplying at least 5A (3A for the computer,
If additional mounting boxes and power supplies are added to the basic system, additional

power receptacles at the site are required.

4-2

(A 6-lead cable attached at

the console is connected to the power pack by means of a white plastic Molex

A standard 15-ft, 3-prong, U-ground, 15-A power cord is provided on the rear of the PDP-11 System for connec-

2A for the Teletype).

Remove the Teletype console from the pallet and mount it on the stand.

Connect the Teletype console to the power pack.

Dress the Teletype cable under the PDP-11 Cabinet and through the large opening
at the right rear of the mounting box (the Unibus also passes through this opening).

Connect the cable to the 8-pin connector on the KL11-A Teletype Control module.
(continued on next page)

Step

Procedure
Connect the 3-prong male connector of the Teletype power cable to either one of

the two 120V outlets at the rear of the mounting box.

Set the OFF/POWER/PANEL LOCK switch on the programmer’s console to the
POWER position.

Install a roll of printed paper into the Teletype Keyboard/Printer, and install a
tape in the punch as described in the PDP-11/20 System Manual.

Set the Teletype LINE/OFF/LOCAL switch to LINE. Press the punch ON
pushbutton. Strike several keys and note whether or not the printer and punch
operate. Check operation of the printer with the LINE/OFF/LOCAL switch set

to LOCAL. After completion of these checks, set the switch to OFF.
10

Set the OFF/POWER/PANEL LOCK switch on the programmer’s console to
OFF. This completes the installation of a standard PDP-11 System. Before using

the system, verify system operating capability by performing power supply checks
and running the complete set of diagnostic programs.

4.5 DATA SHEETS

The following data sheets contain information on the six basic PDP-11 System configurations, as well as major
hardware components such as mounting boxes, Teletypes, power supplies, etc.
Each data sheet is devoted to a single item and includes a brief description, list of components, specifications
(dimensions and power), and installation drawings.
Data sheets are provided for the following:
a.

Models AA & AB Rack-Mountable Systems
Models BA & BB Table-Top Systems

Models CA & CB Rack-Mounted (cabinet) Systems
LT33 Teletype

LT35 Teletype
H720 Power Supply
H960-CA Freestanding Base Cabinet

H952-HA Freestanding Programmer’s Table
BA11-EC Extension Mounting Box (Table-Top Model)

BA11-ES Extension Mounting Box (Rack-Mountable Model)

NOTE
The BA11-CS and BA11-CC basic mounting boxes are included in items a. and b. above, respectively.

4-3

DESCRIPTION

MODELS AA and AB
RACK-MOUNTABLE SYSTEMS

Systems designated as either Model AA or AB are mounted in a basic mounting box which includes tilt-and-lock
chassis slides for cabinet installation. The mounting box is designed to fit either DEC cabinets or customersupplied standard 19-inch RETMA cabinets. The only difference between the two models is the input power
requirements.

COMPONENTS
Both models consists of a basic BA11-CS Mounting Box and either an H720-A (115V) or H720-B (230V) Power

Supply. The mounting box is supplied with the appropriate power supply already installed.
10-172"

BA11-CS Mounting Box
Tilt-and-lock chassis slides

Cooling fans (four)
Filter

11/20 Programmer’s Console or 11/10 Controller Console

8-3/4"

H720 Power Supply

Power Supply (refer to power supply sheet for description of both A and B models)
15 ft of appropriate power cord with ground wire

SPECIFICATIONS

Size:

10-1/2 in. high, 19 in. wide, 23 in. deep

Weight:

90 Ibs. (approximate — includes processor, console, and 4K of memory)

Power:

H720-A — 120V + 10%, 47-63 Hz, 6A, single-phase

H720-B — 230V £ 10%, 47-63 Hz, 3A, single-phase
\—\/A

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Overall Dimensions

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Rear View of Mounting Hardware

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24.88 EXTENSION

Side View of Mounting Hardware
4-4

21,63 CHASSIS

1050 PP

DESCRIPTION

MODELS BA and BB

TABLE-TOP SYSTEMS

Systems designated as either Model BA or BB are mounted in a table-top mounting box which includes a
decorative, protective cover. The only difference between the two models is the input power requirements.

COMPONENTS
Both models consist of a BA11-CC Mounting Box and either an H720-A (115V) or H720-B (230V) Power Supply.
The appropriate power supply is furnished already installed in the mounting box.

BA11-CC Mounting Box
Protective cover

Cooling fans (four)

Filter

11/20 Programmer’s Console or 11/10 Controller Console

o 25-5/8" /-1

H720 Power Supply (See power supply sheet for description of both A and B models.)
15 ft of power cord with ground wire

SPECIFICATIONS

Size:

11 in. high, 20 in. wide, 23-5/8 in. deep

Weight:

100 Ibs. (approximate — includes processor, console, and 4K of memory)

Power:

H720-A — 120V * 10%, 47-63 Hz, 6A, single-phase

H720-B — 230V = 10%, 47-63 Hz, 3A, single-phase

8-3/4"

DESCRIPTION

MODELS CA and CB
RACK-MOUNTED (CABINET) SYSTEMS

Systems designated as either Model CA or CB are delivered to the customer already mounted in a DEC freestanding cabinet. In addition to the space occupied by the basic mounting box, the cabinet contains two addition-

al spaces for holding extension mounting boxes, basic mounting boxes, or other PDP-11 equipment. The only

difference between the two models is the input power requirements.

COMPONENTS

Both models consist of a BA11-CS Basic Mounting Box, an H960-CA Cabinet, and either an H720-A (115V) or
I

H720-B (230V) Power Supply. An optional freestanding programmer’s table may also be included.

BA11-CS Mounting Box

22"

Tilt-and-lock chassis slides

Cooling fans (four)

Filter

11/20 Programmer’s Console or 11/10 Controller Console

— ]

H720 Power Supply
EXTENSION

15 ft of appropriate power cord with ground wires

Power Supply (refer to power supply sheet for description of both A and B models)
BOX

H960-CA Freestanding Base Cabinet
Fan assembly (in top of cabinet)

RESERVED FOR

Power distribution panel

Front panel bezels (5§ maximum)
H952-HA Freestanding Programmer’s Table (optional)

PC—11

Extension feet

(HIGH-SPEED READER)

CONSOLE
AND

BASIC MOUNTING BOX
(INCLUDES CP, MEMORY,ETC)||
F
_d

/TABLE (OPTIONAL)

SPECIFICATIONS

Size:

Cabinet — 71-1/2 in. high, 22 in. wide, 39 in. deep
Table — 27 in. high, 19 in. wide, 20 in. extension from cabinet

Weight:

150 Ibs (approximate — cabinet only — does not include mounting box or optional table)

Power:

Either 115V, 60 Hz or 230V, 50 Hz power required for fan assembly

RESERVED
FOR
EXTENSION

MOUNTING BOX

l_ FLOOR LINE

RACKMOUNTED SYSTEM
11-0096

LT33 TELETYPE

DESCRIPTION

The LT33 Teletype Unit is one of the Teletypes that may be used with the PDP-11 System. This Teletype
functions as an input/output device for communication with the system. The Teletype unit plugs into the rear of
the PDP-11 System Mounting Box and therefore does not require a separate power receptacle.

MODEL TYPES

The LT33 Teletype is available in four models. The first letter of the model number indicates whether or not it
has a paper tape capability. The second letter of the model number indicates the required input voltage.

Model

Type

Power

Deécription

LT33-DC

33 ASR

115V, 60 Hz

Automatic send/receive unit. Includes keyboard and a

reader/punch for paper tapes.
LT33-DD

33 ASR

230V, 50 Hz

Same as above.

LT33-CC

33 KSR

115V, 60 Hz

Keyboard only. Does not include paper tape capability.

LT33-CD

33 KSR

230V, 50Hz

Same as above.

SPECIFICATIONS

Size:

34 in. high, 22 in. wide, 19 in. deep

Weight:

56 lbs

Power:

C Models — 115V £ 10%, 60 Hz £ 0.45 Hz

D Models — 230V + 10%, 50 Hz £ 0.75 Hz

Both Models — Line current drain of 2A power dissipation of 150W

LT 33
TELETYPE

UNIT

———————————

;

(MODEL CORD)

78"

NOTE:

MUST BE WITHIN 8 ft. OF PDP-11
SYSTEM DUE TO CABLE
RESTRICTION.
SERVICE
AREA

TOP VIEW
11-0095

4-7

DESCRIPTION

LT35 TELETYPE

The LT35 Teletype Unit is one of the Teletypes that may be used with the PDP-11 System. This Teletype
functions as an input/output device for communication with the system and is basically a heavy-duty version of
the LT33 Teletype. The unit plugs into the rear of the PDP-11 System Mounting Box and therefore does not
require a separate power receptacle.

MODEL TYPES

The LT35 Teletype is available in four models. The first letter of the model number indicates whether or not it
has a paper tape capability. The second letter of the model number indicates the required input voltage.

Model

Type

Power

Description

LT35-DC

35 ASR

115V, 60 Hz

Automatic send/receive uni‘t. Includes keyboard and a
reader/punch for paper tapes.

LT35-DD

35 ASR

230V, 50 Hz

Same as above.

LT35-CC

35 KSR

115V, 60 Hz

Keyboard only. Does not include paper tape capability.

LT35-CD

35 KSR

230V, 50 Hz

Same as above.

SPECIFICATIONS
Size:

40 in. high, 20 in. wide, 28 in. deep

Weight:

150 Ibs

Power:

C Models — 115V £ 10%, 60 Hz £ 0.45 Hz
D Models — 230V £ 10%, 50 Hz £ 0.75 Hz
Both Models — Line current drain of 2A power dissipation of 150W

|
TELETYPE

UNIT

(MODEL

78"

COR D)

|¢——— 20"————|

|
|

I
I

SERVICE
AREA

|
I

l
I

I
_J

TOP VIEW
11—-0094

H720 POWER SUPPLY

(A and B Version)

(E and F Version)

DESCRIPTION

INPUT VOLTAGE

The H720 Power Supply provides both regulated and unregulated ac and dc power for the PDP-11 System. This

Model E:

120 Vac, £ 10%; 47-63 Hz; 6A

supply furnishes all power required by components in either a basic or extension mounting box. The powér

Model F:

One of the following:

210 Vac, * 10%; 47-63 Hz; 3A

supply is furnished as part of the basic mounting box, but must be ordered as an additional item when using

225 Vac, £ 10%; 47-63 Hz; 3A

either the BA11-ES or BA11-EC Extension Mounting Box.

240 Vac, = 10%; 47-63 Hz; 3A
INPUT VOLTAGE

OUTPUT VOLTAGES (both models)

Model A:

120 Vac, + 10%; 47-63 Hz; 6A

Model B:

One of the following:
218 Vac, £ 10%; 47-63 Hz; 3A

225 Vac, + 10%; 47-63 Hz; 3A

Regulated:

Unregulated:

OUTPUT VOLTAGES (both models)
Regulated:

+5 Vdc, = 5%; 16A

PROTECTION CIRCUITS
Over-current:

-15V @ 12-16A; short-circuit current 25A at OV

Over-Voltage:

+5 Vdc limited to 6.3 Vdc

-15 Vdc, £ 3%; 10A
Unregulated:

-22 Vdc, £ 20%; 1A
+8V, full-wave rectified, unfiltered; 1.5A

PROTECTION CIRCUITS
Over-current:

Over-Voltage:

-15 Vdc limited to unregulated -22 Vdc
LOGIC SIGNALS
LTC:

Line frequency signal, sine wave clipped at +5V and ground

DC LO:

Low dc voltage signal, goes high before AC LO on power up;

+5V @ 18-22A; short-circuit current 30A at OV

-15V @ 12-16A; short-circuit current 25A at OV

-22 Vdc, £ 20%; 1A
+8V, full-wave rectified, unfiltered; 1.5A

233 Vac, £ 10%; 47-63 Hz; 3A

240 Vac, = 10%; 47-63 Hz; 3A

+5 Vdc, * 5%; 22A

-15 Vdc, + 3%; 10A

remains high 7 ms after AC LO drops during power down
AC LO:

Low ac voltage signal

+5 Vdc limited to 6.3 Vdc

-15 Vdc limited to unregulated -22 Vdc

AVAILABLE POWER

The basic PDP-11/20, consisting of the KA11, KY11-A, MM11-E, and KL11, allows the following power for

LOGIC SIGNALS

expansion:

LTC:

Line frequency signal, sine wave clipped at +5V and ground

DC LO:

Low dc voltage signal, goes high before AC LO on power up;

-15 Vdc, = 3%;

1.7A

remains high 7 ms after AC LO drops during power down

-22 Vdc, * 20%, unregulated;

0.8A

ACLO:

Low ac voltage signal

+5 Vdc, * 5%;

9.4A

DIMENSIONS

AVAILABLE POWER

Size:

8 in. high, 16-1/2 in. wide, 6 in. deep

The basic PDP-11/20, consisting of the KA11, KY11-A, MM11-E, and KL11, allows the following power for

Weight:

30 1bs

expansion:
+5 Vdc, * 5%;

3.4A

-15 Vdc, * 3%

1.7A

-22 Vdc, = 20%, unregulated;

0.8A

DIMENSIONS
Size:

8 in. high, 16-1/2 in. wide, 6 in. deep

Weight:

25 1bs

H960-CA

H952-HA

FREESTANDING BASE CABINET

DESCRIPTION

FREESTANDING PROGRAMMER’S TABLE

DESCRIPTION

This optional cabinet can be used to mount the BA11-CS Basic Mounting Box and a BA11-ES Extension Mount-

ing Box, in addition to other PDP-11 equipment. If desired, the cabinet can be used to house only additional

PDP-11 equipment. The cabinet contains six 10-1/2 in. high mounting spaces. If equipment is not mounted,
each space can be covered by a black plastic panel. Five of these panels are supplied with the cabinet.
A photograph and installation drawing of this cabinet is contained in the Model CA and CB Rack-Mounted

The H952-HA Freestanding Programmer’s Table is an option that can be ordered for use with the H960-CA Base
Cabinet. The table extends into the cabinet approximately one in. The surface plate is supported by its own

adjustable-height legs. It should be noted that the table cannot be used by itself; it must be used with the base
~cabinet. During installation planning, it is necessary to note that the table extends 20 in. from the front of the
cabinet, making the space needed for the cabinet 59 in. deep.

System data sheet.

SPECIFICATIONS
COMPONENTS

Size:

19 in. wide

H950-A Frame

21 in. deep (extends 20 in. from cabinet, 1 in. into cabinet)

H952-E Coasters
H952-F Levelers
H952-C Fan Assembly (located in top of cabinet)

H950-S Filter

H950-B Rear Door

H952-A End Panel (2)
H950-D Mounting Panel Doors

H952-B Stabilizer Feet
PDP-11 Logo

Blank Plastic Bezels (10-1/2 in., maximum of 5 supplied)

#7406782

Kick Plate

#7005909

Power Distribution Panel (ac and dc; mounted on upper left side of cabinet)

SPECIFICATIONS

4-10

27 in. high (above floor)

Size:

71-1/2 in. high, 22 in. wide, 39 in. deep (including stabilizer feet)

Weight:

150 1bs. (without any equipment mounted inside)

Power:

Either 115V, 60 Hz or 230V, 50 Hz power is required for the fan assembly

_
o

BA11-EC

BA11-ES

EXTENSION MOUNTING BOX

(TABLE-TOP MODEL)

DESCRIPTION

EXTENSION MOUNTING BOX

(RACK-MOUNTABLE MODEL)

DESCRIPTION

The Table-Top Extension Box provides mounting space for up to six additional system units which cannot be
contained in the basic mounting box.

‘_

The Rack-Mountable Extension Box provides mounting space for up to six additional system units which cannot
be contained in the basic mounting box.

COMPONENTS

Each BA11-EC Extension Mounting Box is supplied with the following:

Each BA11-ES Extension Mounting Box is supplied with the following:

Blank front panel

Protective cover
Cooling fans (4)

Blank front panel

Tilt-and-lock chassis slides
.

Filter
Unibus cable from basic mounting box (8 ft 6 in. long)

15 ft of power cord with ground wire (type of cord determined by type of H720 Power Supply selected)
SPECIFICATIONS

Cooling fans (4)

Filter
Unibus cable from basic mounting box (8 ft 6 in. long)

15 ft of power cord with ground wire (type of cord determined by type of H720 Power Supply selected)

SPECIFICATIONS

Size:

11 in. high, 20 in. wide, 24 in. deep

Size:

10-1/2 in. high, 19 in. wide, 23 in. deep

Power:

Input power requirements are dependent on the type of H720 Power Supply ordered for

Power:

Input power requirements are dependent on the type of H720 Power Supply ordered

the box.

for the box.

4-11