Digital Equipment PDT 11/150 User manual

mD~DDmD USER GUIDE

PDT-11/150
USER GUIDE
EK-PT150-UG-003
digital equipment corporation • marlboro, massachusetts

1st Edition, February 1979
2nd Edition, April 1979
3rd Printing (Rev), March 1980
Copyright © 1979, 1980 by Digital Equipment Corporation
All Rights Reserved
The material in this manual is for informational pur-
poses and is subject to change without notice.
Digital Equipment Corporation assumes no responsi-
bility for any errors which may appear in this manual.
Printed in U.S.A.
This document was set on DIGITAL's DECset-8000 computerized
typesetting system.
The following are trademarks of Digital Equipment
Corporation, Maynard, Massachusetts:
DIGITAL
DEC
PDP
DECUS
UNIBUS
DECLAB
DECsystem-l0
DECSYSTEM-20
DIBOL
EduSystem
VAX
VMS
MASSBUS
OMNIBUS
OS/8
RSTS
RSX
lAS
MINC-ll

CHAPTER I
1.1
1.1.1
1.1.2
1.1.3
1.2
1.3
CHAPTER 2
2.1
2.2
2.2.1
2.2.2
2.2.2.1
2.2.2.2
2.3
CHAPTER 3
3.1
3.1.1
3.1.2
3.1.3
3.2
3.2.1
3.3
3.3.1
3.3.2
3.3.3
3.3.4
3.3.4.1
3.3.4.2
3.3.5
3.3.6
CHAPTER 4
4.1
4.1.1
4.1.2
4.1.3
4.2
4.3
CONTENTS
Page
INTRODUCTION
GENERAL DESCRIPTION ............................................................................. 1-1
System Configurations and Options ........................................................... 1-2
PDT-II /150 Equipment Specifications....................................................... 1-4
Media Specifications .................................................................................. 1-5
REFERENCE DOCUMENTS ................................................r •••••••••••••••••••••••• 1-6
SUPPLIES AND ACCESSORIES .................................................................... 1-7
UNPACKING/INSTALLATION
UNPACKING AND INSPECTION ................................................................. 2-1
SITE PREPARATION AND CONNECTIONS ...............................................2-3
ac Power Requirements ............................;...................................... ~ ..........2-3
Serial Line
Cable Connectors .....................................................................2-3
EIA Connector Pin Assignments ., ......................................................2-6
Serial
Line Cable Length ....................................................................2-8
SERIAL LINE DATA CHARACTERISTICS ..................................................2-8
OPERATING PROCEDURES
SWITCHES AND INDICATORS ....................................................................3-1
Front Panel Indicators ...............................................................................3-1
Rear Panel Switches and Components ........................................................3-2
Function Control Switch ............................................................................3-2
DISK HANDLING AND STORAGE ..............................................................3-3
Insertion and Removal of a Disk ................................................................3-4
TEST PROCEDURES ......................................................................................3-6
Preliminary Set-Up ....................................................................................3-6
Optional Loopback Connector ...................................................................3-6
Self-Test
Procedures ...................................................................................3-7
Loading the System Exerciser Program .......................................................3-9
Exerciser
Compatability Test............................................................3-13
Copying the System Exerciser Disk ...................................................3-13
Loading a System Program ....................................................................... 3-14
Changing a System Program .....................................................................3-15
OPTION INSTALLATION
RAM MODULE OPTION ................................................................................ 4-1
RAM Module Removal .............................................................................4-1
Bootstrap ROM Installation .. ,...................................................................4-5
RAM Module Installation ..........................................................................4-7
FLOPPY DISK DRIVE ASSEMBLIES ............................................................4-8
EIA-LEVEL CONVERTER (CLUSTER OPTION) ....................................... 4-14
iii

CHAPTER 5
5.1
5.2
5.2.1
5.2.2
5.2.3
5.2.4
5.2.5
5.2.6
5.3
5.3.1
5.3.2
5.3.3
5.3.4
5.3.5
5.4
5.4.1
5.4.2
5.4.2.1
5.4.2.2
5.4.2.3
5.4.2.4
5.4.3
5.4.4
5.4.4.1
5.4.4.2
5.4.4.3
5.4.4.4
5.4.5
5.4.5.1
5.4.5.2
5.4.5.3
5.4.5.4
5.4.5.5
5.4.6
5.4.6.1
5.4.6.2
5.5
5.6
5.6.1
5.6.2
5.6.3
5.7
5.8
CONTENTS (Cont)
Page
PROGRAMMING INFORMATION
SYSTEM CHARACTERISTICS ...................................................................... 5-1
PERIPHERAL DEVICE COMMUNICATION ............................................... 5-2
Console Device " ...................................................... '" ............................... 5-3
Communications Modem ........................................................................... 5-3
Line
Printer Terminal ................................................................................. 5-3
Cluster Option Terminals ............................................. '" '" '" ..................... 5-3
Power Up and Manual Reset Conditions .................................................... 5-3
Programmed Reset Instruction (Initialize).................................................. 5-4
DEVICE AND INTERRUPT VECTOR ADDRESS ASSIGNMENTS ........... 5-4
USART Parameter Control Register Address ............................................. 5-4
Standard Terminal Addresses..................................................................... 5-6
Optional (Cluster) Terminal Addresses....................................................... 5-7
Disk Drive Addresses ................................................................................. 5-8
Line
Time Clock Addresses ......,..................,....................................., .. ,..... 5-9
STANDARD TERMINAL REGISTER FORMATS ....................................... 5-9
USART Parameter Register....................................................................... 5-9
Console Device Interface...........................................................................5-11
Receiver
Control/Status Register (RCSR) .........................................5-12
Receiver
Data Buffer (RBUF) ...........................................................5-12
Transmitter Control/Status Register (XCSR) ....,...............................5-13
Transmitter Data Buffer (XBUF) ......................................................5-13
Comm unications Interface (Modem) ......................................................... 5-14
Asynchronous Modem Interface ...............................................................5-15
Asychronous Receiver Control/Status Register (RCSR) ...................5-15
Asynchronous Receiver Data Buffer (RBUF) ...................................5-17
Asychronous Transmitter Control/Status Register (XCSR) ..............5-18
Asychronous Transmitter Data Buffer (XBUF) .................................5-19
Synchronous Modem Interface................................. '" '" ......,....................5-19
Parameter Control Register (PARCSR) ............................................5-20
Synchronous Receiver Control/Status Register (RXCSR) .................5-22
Synchronous Receiver Data Buffer (RXDBUF) ................................5-24
Synchronous Transmit Control and Status Register (TXCSR) ...........5-25
Synchronous Transmit Data Buffer (TXDBUF) .................................5-27
Printer Terminal Interface...........................1 ••••••••••••••••••••••••••••••••••••••••••••• 5-27
Printer Control/Status Register (LPCSR) ......................................... ;>-28
Printer Data Buffer (LPDSR) ............................................................5-28
OPTIONAL TERMINAL REG ISTER WORD FORMATS ...........................5-28
DISK DRIVE REGIStER FORMATS ...........................................................5-28
Drive Control/Status Register (RXCS) .....................................................5-30
Disk Controller Data Buffer Register (RXDB) ..........................................5-32
Disk Controller Track and Sector Register(RXSA) .........................,......... 5-34
LINE TIME CLOCK (LTC) .............................................................................5-34
FUNCTION CONTROL SWITCH SELECTIONS ........................................ 5-36
iv

Figure No.
I-I
1-2
2-1
2-2
2-3
3-1
3-2
3-3
3-4
4-1
4-2
4-3
4-4
4-5
4-6
4-7
4-8
4-9
4-10
4-11
4-12
5-1
5-2
5-3
5-4
5-5
5-6
5-7
5-8
5-9
5-10
5-11
FIGURES
Title
Page
Typical PDT-II /150 Flexible Disk Operating System ........................................ 1-2
PDT-I 1/150 Model Designations ...................................................................... 1-3
PDT-II/ 150 Unpacking Procedure Diagram .................'................................... 2-2
PDT-II /150 Single and Dual Disk Unit Dimensions .........................................2-4
Rear Panel Components and Connector Pin Assignments .................................2-6
Front Panel Indicators ...................................................................................... 3-1
Flexible Disk .....................................................................................................3-4
Loading the Disk into the Drive ........................................................................3-5
Loopback Connector Installation ...................................................................... 3-7
Top Cover and TIM Assembly Removal and Replacement. ...............................4-2
TIM Assembly Connections .................,............................................................4-3
TIM Group, Assembly and Disassembly ........................................................... 4-4
RAM Module, PROM Installation ...................................................................4-6
Disk Drive 1 Enclosure Mounting ..................................................................... 4-9
Rear Panel Removal, Disk Drive 0 Enclosure ................................................. .4-10
Ground Leads and ac Cable Routing ...............................................................4-11
Disk Drive I Assembly, Cable Routing ...........................................................4-13
Cluster EIA Converter Module Mounting .......................................................4-14
Cluster EIA Converter, Cable Routing ............................................................4-15
Cluster EIA Module, USART Installation ......................................................4-16
Intelligence Module, WI Jumper Lead Location .............................................4-18
PDT-II /150 Program Development System. ................................................... 5-2
PDT-I 1/150 Control and Address Register, Buffer Assignment ...................... 5-5
USART Parameter Control Register UPCSR Format. .................................... 5-9
Console Terminal Interface Register Formats ................................................. 5-12
Comm unication Interface, Asynchronous/Synchronous Select .......................5-14
Asynchronous Communications Interface Register Formats ...........................5-15
Synchronous Communications Interface Register Format. .............................. 5-20
Synchronous Communications Parameter Control Register Format. ...............5-21
Printer Terminal Interface, Register Formats ..................................................5-27
Disk Drive Interface, Register Formats ...........................................................5-29
Line Time Clock (TCSR) Format. ...................................................................5-35
v

Table No.
1-1
1-2
1-3
1-4
2-1
2-2
2-3
2-4
2-5
3-1
3-2
3-3
3-4
5-1
5-2
5-3
5-4
5-5
5-6
5-7
5-8
5-9
5-10
5-1 1
5-12
5-13
5-14
5-15
5-16
5-17
5-18
5-19
5-20
5-21
5-22
5-23
5-24
TABLES
Title Page
PDT-I 1/150 Options ........................................................................................1-3
PDT-I 1/150 Specifications ...............................................................................1-4
Flexible Disk Specifications .......................
'" ....................................................1-6
PDT-II/150 Related Publications .....................................................................1-6
ac Power Requirements .....................................................................................2-5
Rear Panel, Device Connector Assignments ......................................................2-5
Available Device
Cable Assemblies ........ '" ........................................................2-5
Standard EIA Connector Signals................................................................. '" ...2-7
Cluster Option EIA Connector Signals..............................................................2-8
Front Panel Indicators ......................................................................................3-2
Rear Panel Switches and Fuse ...........................................................................3-2
Function Control Switch Positions ....................................................................3-3
Device Map
Options (DEVM).......................................................................... 3-11
Standard Device and Vector Addresses .............................................................5-6
Optional (Cluster) Terminals, Device and Vector Addresses ..............................5-7
Disk Drive, Device and Vector Addresses..........................................................5-8
Line
Time Clock, Device and Vector Address ....................................................5-9
USART Parameter Register, Bit Descriptions .................................................5-10
. Console Interface, Receiver Register Bit Descriptions .....................................5-12
Console Interface, Transmitter Register Bit Descriptions ................................5-13
Asynchronous Communications, RCSR Bit Descriptions ................................5-16
Asynchronous Communications, RBUF Bit Descriptions ...............................5-17
Asynchronous Communications, XCSR Bit Descriptions ................................5-18
Asynchronous Communications, XBUF Bit Descriptions ...............................5-19
Parameter Control Register PARCSR, Bit Descriptions ..................................5-21
Synchronous Communications, RXCSR Bit Descriptions ...............................5-22
Synchronous Communications RXDBUF Bit Descriptions .............................5-24
Synchronous Communications, TXCSR Bit Descriptions ...............................5-25
Synchronous Communications TXCBUF Bit Descriptions .............................5-27
Printer Interface PCSR Bit Descriptions ..........................................................5-28
Printer Interface PDBUF Bit Descriptions ......................................................5-28
Disk Controller RXCS Bit Descriptions ..........................................................5-30
Disk Controller RXDB Bit Descriptions .........................................................5-33
Disk
Controller RXES Bit Descriptions ..........................................................5-33
Disk
Controller RXSA Bit Descriptions ..........................................................5-34
Line
Time Clock Control/Status Register (TCSR) ..........................................5-35
Function Control Switch Pack Selections ........................................................5-35
vi

CHAPTER 1
INTRODUCTION
This guide contains the information required to unpack, inspect, install and verify the proper oper-
ation of the Programmable Data Terminal PDT-II/ISO. Also included is programming information
necessary to develop the application software. The PDT-II/ISO is a user-programmable disk storage
system available as either a single flexible (floppy) disk drive unit or dual flexible disk drive unit. Input
to and output from the system is through serial line terminals (consoles, printers, etc.) which conform
to EIA standard RS-232C.
Chapter 1 provides a general introduction to the PDT-II/ISO operating system and includes the speci-
fications for
the single and dual disk drive units. Also included is a list of the supporting publications.
Chapter 2 contains detailed procedures for unpacking the PDT-II/ISO, inspecting the unit and related
contents, and connecting the unit to ac power and associated terminals.
Chapter 3 defines the switches and indicators and provides detailed procedures to verify the proper
operation of the PDT-II/ISO.
Chapter 4 includes installation information required to incorporate the various options available into
an existing PDT-II/ISO unit.
Chapter 5 provides programming information and considerations for the development of application
software.
1.1 GENERAL DESCRIPTION
Figure 1-1 is a typical operating system configuration which includes the maximum number of termi-
nals.
Three serial devices connect to the standard EIA-Ievel converter, and three serial terminals con-
nect to the cluster EIA-Ievel converter (optional).
The standard EIA-level converter allows full or half duplex operation with a console terminal, printer
terminal or communications device (modem). The cluster converter expands the capability of the unit
to include three additional serial line terminals; however, only one console, one line printer, and one
modem device are allowable for each system.
The data transfer rates to and from the devices and terminals are dependent on the applications
program or operating system and the number and types of peripheral units connected to the PDT-
11/150. Refer to Paragraph 5.2 for detailed data transfer rate information.
The PDT-II/ISO is controlled by a DIGITAL LSI-II microprocessor and application programs can
be developed on PDP-II/V03 systems or equivalent using RT-IIV3 (or later versions) operating sys-
tems available for the LSI-II microprocessor.
1-1

PDT-11/150
SI NG LE/DUAL
DISK
PROGRAMMABLE
DATA
TERMINAL
EIA
STANDARD
CONVERTER
EIA
CLUSTER J2
CONVERTER
CONSOLE
TERMINAL
(EIA)
50-9.6K BAUD
PRINTER
TERMINAL
(EIA)
50-9.6K BAUD
MODEM
BELL 103/113
203/212
I
I
I
I
HALF/FULL DUPLEX
----------------TELEPHONE
TERMINAL
NO 1
(EIA)
50-2.4K BAUD
TERMINAL
N02
(EIA)
50-2.4K BAUD
TERMINAL
N03
(EIA)
50-2.4K BAUD
LINE I
MR-3574
Figure 1-1 Typical PDT-ll/150 Flexible Disk Operating System
1.1.1 System Configurations and Options
Figure 1-2 lists the model designations assigned to each of the PDT-ll/150 units. The units are avail-
able with a single disk drive or dual disk drive. They operatewith either 120 V /60 Hz input ac power or
several voltage ranges for the 50 Hz power.
Table
1-1 lists and describes the options associated with the PDT-ll/150. The RXTOI-AA or -AC
option is always included with a dual disk drive unit. '
1-2

PDT-11/15 x-xx
,...--------,T II
__ --~A----~,(~----~A-----~,(~------------~A~------------
CONSOLE RAM MEMORY AC CLUSTER DISK
DRIVE
TERMINAL
OPTION (BYTES)
POWER INPUT
EIA OPTION OPTION
O=NONE
A=MST11-AB (16K) A=120 V160 HZ NONE
} NONE
1=VT100-AA C=120
V/60 HZ DFT11-AB
2=LA120-AA, -BA B=MST11-AC (32K)
B=
* 150 HZ NONE
3=LA34-DA D= *
150 HZ DFT11-AB
4=LS120-HE C=MST11-AD (60K) E=120
V/60 HZ NONE }
RXT01:AA
5=LA36-HE H=120
V/60 HZ DFT11-AB
F= *
150 HZ NONE } RXT01-AC
J= *
150 HZ DFT11-AB
Option No.
RXTOI-AA
RXTOI-AC
* AVAILABLE IN THE FOLLOWING VOLTAGE
RATINGS:
90-120 VAC, 100-132 VAC,
180-240 VAC, 200-264 VAC
EXAMPLE: IPDT-11/151-BHIINCLUDES THE FOLLOWING
• VT100-AA CONSOLE
TERMINAL
• MSTll-AC OPTION (32K BYTES OF RAM)
• 120 V/60 HZ AC POWER INPUT
• DFT11-AB OPTION (THREE
EIA TERMINAL INTERFACES)
• RXT01-AA OPTION (SECOND DISK DRIVE)
Figure 1-2 PDT-II/ISO Model Designations
Table 1-1 PDT-II/ISO Options
Description
60 Hz disk drive assembly includes enclosure and front bezel
50 Hz disk drive assembly includes enclosure and front panel
MA-2330
DFTII-AA * . Standard EIA converter module (includes cable and USARTs)
DFTll-AB
Cluster EIA converter module (includes cable and USARTs)
MSTII-AB t RAM module/16K bytes
MSTll-AC tRAM module/32K bytes
MSTII-ADt RAM module/60K bytes
(The MSTll modules include diagnostic ROM with bootstrap loader.)
KDTII-AA * Intelligence module with ROM program
DL TIl * Peripheral module with USARTs for standard EIA terminals
RXT 11 * Disk controller module with ROM program
*Included with all PDT-llj150 models.
tThese options are factory installable only.
1-3

1.1.2 PDT-II /150 Equipment Specifications
Table 1-2 describes the mechanical, environmental and electrical characteristics of the PDT-II/ISO
units.
Characteristic
Mechanical
Overall Dimensions
Single Disk
Unit
Dual Disk Unit
Weight
Unpackaged
Packaged
Environmental
Tern
perature
Operating
Maximum gradient
Nonoperating
Humidity
Operating
Nonoperating
System Reliability
Table 1-2
PDT-II/ISO Specifications
Description
51.0 cm (20.08 in) length X 33.02 cm (13.0 in) width X 20.9 cm
(8.23 in) height
51.0 cm (20.08 in) length X 33.02 cm (13.0 in) width X 34.8 cm
(13.42 in) height
Single disk unit:
33. lb
Dual disk unit: 46 lb
Single disk unit: 40 lb
Dual disk unit: 55 lb
150 C to 32
0 C (590
to 900 F) ambient (Temperature is derated
1.80 C/IOOO m or 10 F /1000 ft for altitude.)
11 0 C/hr (200 F /hr)
-35
0 C
to +60
0 C
(-30
0 F
to 1400 F)
Maximum wet bulb: 250 C (770 F)
Minimum dew point: 20 C (360 F)
Relative humidity: 20% to 80%
5% to 95% relative humidity (noncondensing)
Disk Life: 3 million revolutions
per track with head loaded. The
head contacts 5 tracks when loaded.
Seek
error rate:
Soft read
error rate:
Hard read error rate:
1 in 106 seeks
1 in 109 bits read
1 in 10
12
bits read
NOTE
The above error rates only apply to media that is properly cared
for. Seek error and soft read errors are usually attributable to
random effects
in the head/media interface, such as electrical
noise, dirt, or dust. Both
are defined as "soft" errors ifthe error is
recoverable
in ten additional tries or less. "Hard" errors cannot be
recovered. Seek error retries should be preceded by an initialize
or
restore command.
1-4

Table 1-2 PDT-II/ISO Specifications(Cont)
Characteristic
Drive Performance
Data transfer rate
disk to RAM module
Track-to-track-move
Head settle time
Rotational speed
Description
NOTE
To ensure the integrity of the information stored on the disk, the
disks should not be in the disk drives when the ac power is initially
applied to the unit. The disks should be removed from the disk
drives before the ac power is removed from the unit.
32 Ils/16-bit word (nominal)
10 ms/track max
20 ms max
360 r/min ± 2.5%; 166 ms/rev nominal
Recording surfaces per disk
Tracks per disk
Sectors
per track
Recording technique
Bit density
Track density
Average- access*
ac Power Requirements
115 V /60 Hz Input
90-130 V /50 Hz Input
180-264 V /50 Hz
Device Signals
* Seek
77 (0-76) or (0-1148)
26 (1-26) or (1-328)
Double frequency
3200 bits/in at inner track
48 tracks/in
488 ms
Single disk drive: 2.5 A
Dual disk drive: 3.0 A
Single disk drive: 2.5 A
Dual disk drive: 3.0 A
Single disk drive: 1.5 A
Dual disk drive: 2.0 A
All device signals
are serial line and compatible with EIA stand-
ard RS-232-C. (Refer to Tables 2-4 and 2-5 for 'signal require-
ments.)
Settle Rotate
(77 tks/2) X 10 ms + 20 ms + (166 rns/2)
Total
488 ms
1.1.3 Media Specifications
Table 1-3 describes the physical and electrical characteristics of the flexible disk media used with the
PDT-l 1/150.
1-5

Specifications
Description
Dimensions
Disk
Jacket
Recording
Format
Operating
Tern perature / Humidity
Storage
Ternpera
ture
Relative Humidity
Magnetic field
Table 1-3 Flexible Disk Specifications
Description
Mylar based, oxide-coated disk
19.8 cm (7.8 in) diameter
20.26 cm (7.94 in) square
Single-side, industry-compatible according to IBM 3740 floppy
disk format, 77
data/address tracks
Media
temperature must be within PDT-II/ISO operating tem-
perature and humidity range before u~e
-34
0 C
(-30° F) to 52° C (125° F)
10% to 80% (noncondensing)
Exposure
to magnetic field strength of 50 oersteds or greater
may result in loss of data.
1.2 REFERENCE DOCUMENTS
Table 1-4 lists the related publications that are available for the PDT-II/ISO system. These pub-
lications provide detailed operator and maintenance information.
Document No.
EK-PTISO-IN
EK-PTISO-JI
EK-PTISO-TM
Table 1-4
PDT-II/ISO Related Publications
Title
PDT-II/ISO Installation Guide
PDT-ll/ISO Mini Maintenance Hardware
Guide
PDT-II/ISO Technical Manual
*Purchase orders for publications should be forwarded to:
Digital
Equipment Corporation
Accessories and Supplies Group
Cotton Road
Nashua, New Hampshire 03060
Medium*
Printed
Printed
Printed/
Microfiche
Contact your local sales office or call toll-free 800-258-1710 from 8:30 a.m. to 5:00 p.m. eastern standard time (U.S. customers
only). New Hampshire, Alaska, and Hawaii customers should dial (603)-884-6660. Terms and conditions include net 30 days
and F.O.B. DIGITAL plant. Freight charges will be prepaid by DIGITAL and added to the invoice. Minimum order is
$35.00. Minimum does not apply when full payment is submitted with an order. Checks and money orders should be made
out to Digital Equipment Corporation.
1-6

1.3 SUPPLIES AND ACCESSORIES
DIGITAL's Direct Sales Catalog includes a complete line of computer and terminal supplies and
accessories specifically designed for use with DIGITAL systems. These products enable reliable and
efficient operation of your equipment. These products include:
• Preformatted flexible disks
• Power and terminal cables
• Printer and video terminals
• Storage cabinets and tables
A copy
of the catalog may be obtained by calling toll free:
800-258-1710 (8:30 am 5:00 pm EST)
603-884-6660 (New Hampshire, Alaska,
and Hawaii)
1-7

CHAPTER 2
UNPA CKING jINSTALLA TION
The PDT-II/ISO programmable data terminal is a free-standing, self-enclosed unit that can be placed
on a desk or table. The console device, modem, printer, and terminals which operate with the unit are
attached by cables to the rear panel. The devices can be located adjacent to the unit or at a remote
location.
The PDT-II/ISO units are packaged in reinforced cartons and protected by side cushions and a pro-
tective cover. The PDT-II / 150 Installation Guide, EK-PTISO-IN, is included with the unit. All remain-
ing publications, when ordered, are supplied in a separate container.
This chapter provides the information necessary to unpack PDT-II/ISO and supporting documents;
and to inspect the contents and connect the units with the associated devices.
2.1
UNPACKING AND INSPECTION
Figure 2-1 shows the method used to unpack a dual drive unit. The single drive unit is packaged in a
similar
manner.
1. Remove the unpacking procedure diagram attached to the outside of the PDT-II/ISO con-
tainer.
2. Remove the PDT-II/ISO unit according to the procedures on the diagram.
CAUTION
Do not lift the unit by grasping the front door han-
dles
of the disk drive assembly.
3. Visually inspect
the unit for any physical damage.
NOTE
If physical damage is evident, notify a local
DIGITAL sales office.
4. Opet;l
and remove the contents of any other cartons supplied.
5. Using the packing lists attached to each carton, inspect the contents of each to ensure that
all items listed are supplied.
2-1

1. TURN CARTON OVER, TOP DOWN
2. CUT TAPE AT SEAMS
4. TURN CARTON OVER, LEAVES OUT
3. FOLD CARTON LEAVES OUT
5. LIFT CARTON AWAY FROM CONTENTS
SAVE CARTON
REMOVE END CUSHIONS
REMOVE LINE CORD
REMOVE PROTECTIVE COVER
REMOVE
INSTALLATION GUIDE
REMOVE FOOT PADS, ATTACH
ONE PAD TO EACH PROTRUSION
ON BOTTOM
PANEL OF UNIT
TO CONNECT UNIT, REFER TO
INSTALLATION GUIDE
MR··3544
Figure 2-1 PDT-I 1/150 Unpacking Procedure Diagram
2-2

6. Connect the female end of the ac power cord to the recessed male connector on the rear
panel of. the unit.
CAUTION
The PDT-ll/150 units are available to operate with
several variations
of the ac input power. Check the
metallic label on the rear panel of the unit to ensure
that the power supplied at the site is compatible with
the unit requirements.
2.2
SITE PREPARATION AND CONNECTIONS
Figure 2-2 shows the overall dimensions of the single and dual drive units. Adequate clearance is
required at the front of the unit for monitoring the indicators on the front panel and to. allow the
insertion and removal
of the disk. Adequate area should be allowed at the rear of the unit for oper-
ation
of the ac power switch and mode switch and to permit the free circulation of air through the fan
also located on the rear panel. The signal and power cables that attach to the connectors
on the rear
panel should be free from obstructions and sharp bends.
NOTE
To prevent the accumlation of film and foreign mat-
ter on the disk and disk drive components, the PDT-
11/150 should not be operated in locations having
high levels of dust or industrial contaminants.
2.2.1 ac Power Requirements
Table
2-1 lists the voltage, frequency and current ratings of the PDT-II/I50 models. Each unit is
shipped with the appropriate ac power cable also listed. Additional cable lengths are also available on
request. A separate ac power outlet
is required for connecting the PDT-II/150 power cord and console
terminal power cord.
The main ac line to the outlet can be fused at 10 A or greater.
NOTE
Do not connect appliances or office equipment to the
same ac circuits that supply power to the PDT-
11/150 unit or associated console and terminals.
To connect the ac power, perform the following procedures:
1. Set the ac power switch on the rear panel to the OFF (0) position.
2. Connect the male end of the line cord to the ac outlet.
3. Connect the female end of the line cord to the rear panel of the PDT -11/150 unit.
2.2.2 Serial Line Cable Connectors
Three 25-pin serial line connectors are mounted
on the rear panel of the PDT -11/150 and an addi-
tional three 25-pin connectors are optional as shown in Figure 2-3. All cables from the devices oper-
ating with the disk unit attach to these connectors through compatible 25-pin RS232-type plugs. Table
2-2 lists the type of devices that can be attached to each connector. The connector type used on the
other end
of the cable is dependent on the device. Cable assemblies are normally included with the
terminals; however, additional cables
of various lengths are available from DIGITAL.
Some of the typical cable assembly types are listed in Table 2-3 and can be ordered by contacting a
local
DIGITAL sales office.
2-3

DISK
DRIVE 1
~33.02CM
(~3.0)
* TOTAL SINGLE
DISK
UNIT HEIGHT
OVERALL DIMENSION
INCLUDES POWER
SWITCH ON REAR
PANEL
34.8 CM
(13.4)
INCHES IN PARENTHESIS
MR-3575
Figure 2-2 PDT-ll/ 150 Single and Dual Disk Unit Dimensions
2-4

Table 2-1 ac Power Requirements
Model No. Voltage
(ac)/
A/Unit
Cable No.
Frequency
PDT-ll/150-AA, -AC, 100-125 V
/60 Hz 2.5A
-BA, -BC, -CA, CC
(single disk drive) 1700083-09*
PDT-ll/150-AE, -AH,
100-125 V /60 Hz
-BE, -BH,
-CE, -CH
3.0A
(dual disk drives)
PDT-ll/150-AB, -AD,
90-130 V /50 Hz
-BB, -BD, -CB, -CD
100-130 V /50 Hz
2.5 A
(single disk drive)
180-240 V /50 Hz 1.5 A
200-264 V /50 Hz
1700083-10*
(Europe)
PDT-ll/150-AF, -AJ, 90-130 V
/50 Hz 1.700083-09*
-BF, -BJ, -CF, -CJ
100-130 V /50 Hz 3.0A (Japan)
(dual disk drive)
180-240 V /50 Hz 1.5A
200-264 V/50 Hz
*Cable lengths are 1.9? m (6.25 ft).
Table 2-2 Rear Panel, Device Connector Assignments
Cable No.
BC05C-25
BC05C-50
BC05D-I0
BC05D-25
EIA Connections
Standard
Modem (J3)
Printer(J2)
Console (J
1)
Cluster
Terminal 3 (J3)
Terminal 2 (J2)
Terminal 1(J1)
Table 2-3 Available Device Cable Assemblies
Cable Length Connector Cable Type
25 ft
H856* Round
25-
50 ft
H856*
conductor
10 ft RS232 (male)
25 ft RS232 (male)
*H856 40-contact female connector
2-5
Connector
RS232 (male)
RS232 (male)
RS232 (female)
RS232 (female)

2.2.2.1 EIA Connector Pin Assignments -Figure 2-3 shows the contact numbering of the rear panel
EIA connectors. Connector
13 of the standard EIA connectors is male and all other connectors on
both
the standard EIA and cluster EIA option are female. The signal/pin assignments for the standard
connectors are listed in Table 2-4 and those for the cluster connectors are listed in Table 2-5. These
signals are pin-compatible with equipment conforming to RS-232-C specifications, but not all the
signals defined by RS-232-C are required by the
PDT-II/ISO.
COVER
PLATE
REAR PANEL COMPONENTS
MODE
SWITCH FAN AC FUSE AC POWER
TEST
r - - - - --,
I TERMINAL #3
MODEM
I@I\ J3 II@:@I\ J3 II@
I
I TERMINAL #2 I
I@I\ J2 n@:@I\ J2 71@
PRINTER
I
I TERMINAL # 1 I CONSOLE
@l\ J1 11@'@I\J1 71@ +
L _-1
CLUSTER EIA STANDARD EIA
CONNECTORS CONNECTORS
(OPTIONAL)
PIN 13-------. PIN 1
00000000000
00000000000
PIN 25 • PIN 14
(ALL OTHER CONNECTORS)
3A 250V
o
r=J LINE
~ CORD
o
PIN 1 ----~. PIN 13
...........
.
.........
PIN 14 -PIN 25
MODEM
Figure 2-3 Rear Panel Components and Connector Pin Assignments
2-6
LINE
CORD
MR-3576