
                         DECtalk Express        
                   TEXT-TO-SPEECH SYNTHESIZER   
                                


                           USER GUIDE   
                                


2nd Edition, June 1996  

Copyright c 1996  by Digital Equipment Corporation.

All Rights Reserved.

Printed in USA.

The reproduction of this material, in part or whole, is strictly
prohibited. For copy information, contact the Assistive
Technology Group, Digital Equipment Corporation, 200 Forest
Street    MRO1-1/T33, Marlboro, Massachusetts  01752.

The information in this document is subject to change without
notice and should not be construed as a commitment by Digital
Equipment Corporation. Digital Equipment Corporation assumes no
responsibility  for any errors that may appear in this document.

The software described in this document is furnished under a
license and may be used or copied only in accordance with the
terms of such license. No responsibility is assumed for the use
or reliability of software on equipment that is not supplied by
Digital Equipment Corporation or its affiliated companies.

The Digital logo, DEC, and DECtalk are trademarks of Digital Equipment
Corporation.

IBM and Personal Computer AT  are registered trademarks of
International Business Machines, Inc.

MS-DOS and MS-Windows are registered trademarks of Microsoft
Corporation.

The installation program used to install DECtalk Express,
INSTALL, is licensed software provided by Knowledge Dynamics
Corp., PO Box 1558, Canyon Lake, Texas 78130-1558 (USA). INSTALL
is Copyright c 1987-1991 by Knowledge Dynamics Corp. which
reserves all copyright protection worldwide. INSTALL is provided
to you for the exclusive purpose of installing DECtalk Express.
Digital Equipment Corporation is exclusively responsible for the
support of DECtalk Express, including support during the
installation phase. In no event will Knowledge Dynamics Corp. be
able to provide any technical support for DECtalk Express.

            This product contains nickel-cadmium rechargeable
            batteries which must be disposed of properly. This
            battery is NOT customer replaceable, therefore,
            please return the entire unit to your dealer or
            DIGITAL for service and/or disposal of the battery.
            Contact the Customer Return Center (800)-225-5385 for
            information.
            

FEDERAL COMMUNICATIONS COMMISSION (FCC)
CLASS-B WARNING

This device generates and uses radio frequency energy. If not
installed and used properly, the device may interfere with radio or
television reception.

FCC COMPLIANCE FCC id: AO9-DTC08

This device has been tested and certified to comply with the limits
for a class-B digital device, as defined in part 15 of the Federal
Communications Commission (FCC) rules. Class-B limits are designed to
provide reasonable protection against radio/television interference in
a residence.

The DECtalk Express is supplied with a serial cable and connector for
connecting the unit to a computer system. This cable is equipped with
an in-line filter. The DECtalk Express must only be used with cables
which incorporate a similar in-line filter.

To comply with FCC regulations, you must use shielded cables with this
device. Operation with unapproved equipment or unshielded cables is
likely to result in interference with radio or television reception.
Changes made to this device  without the approval of Digital Equipment
Corporation could void your authority to operate the device.

The device may cause interference even though it meets class-B limits.
(As a test, turn the device off and on, and gauge the effect on an
operating radio or television.) If there is interference, try to
eliminate it by one or more of the following measures:

     Reorienting or relocating the receiving antenna of the radio or
      television.
      
     Increasing the separation between the device and receiver.
      
     Connecting the device into an outlet on a circuit different
      from that to which the receiver is connected.
      
     Consulting the dealer or an experienced radio/television
      technician for additional suggestions.
      
            CAUTION - ELECTRIC SHOCK AND FIRE HAZARD:
                                
This unit is for indoor use only, and is to be powered only by the
supplied AC power supply, model no. AD1250R. Never allow the wiring or
connector attached to the battery pack to become damaged or shorted,
for this can result in ignition or explosion of the battery pack.

FOR USE WITH A CERTIFIED POWER SUPPLY, WITH CLASS 2 OUTPUT; RATED
OUTPUT 12Vdc, 400mA min.

POUR UTILIZER AVEC UNE ALIMENTATION CERTIFI DOT DE SORTIE DE CLASSE
2 AVEC CHARACTERISTIQUES  NOMINALES DE SORTIE 12Vdc, 400mA min.

                            CONTENTS    

SECTION 1  INSTALLATION.                                        1       
 
 INTRODUCTION.                                                 1        
 
 BEFORE YOU BEGIN.                                             1         
  README FILE                                                  1         
 
 CONFIGURING THE COMPUTER COMMUNICATIONS PORT                  2        
  COM PORTS AND AVAILABLE INTERRUPTS                           2        
  DEFAULT COM PORT AND SETTINGS.                               2        
  CHANGING COM SETTINGS                                        2        
 
 INSTALLATION SEQUENCE                                         2        
 
 CHECKING THE PARTS                                            3        
 
 THE DECTALK EXPRESS UNIT                                      4         
  DIMENSIONS                                                   4         
  ORIENTATION                                                  4         
  LOCATING CONNECTORS AND CONTROLS                             4         
  CHARGING THE DECTALK EXPRESS                                 4        
  CONNECTING THE BATTERY CHARGER/POWER SUPPLY                  5        
  MOUNTING THE UNIT                                            5        
  EXTERNAL AUDIO EQUIPMENT                                     5         
 
 SELF-TEST                                                     6        
 
 CONNECTING THE DECTALK EXPRESS TO YOUR COMPUTER.              7        
 
 INSTALLING DECTALK SOFTWARE.                                  7        
  INSTALLATION OPTIONS.                                        8        
  SELECTING AN INSTALLATION OPTION                             9        
  STANDARD INSTALLATION.                                       9        
  CUSTOM INSTALLATION                                         10        
  NO "DECTALK IS CONNECTED" MESSAGES                          10        
  USING DECTALK EXPRESS                                       10        

SECTION 2 - USING DECTALK EXPRESS                              13       
 
 POWER STATUS                                                 13        
 
 TALK TIME                                                    13        
 
 USING DECTALK EXPRESS.                                       13        
  THIRD-PARTY APPLICATIONS.                                   13        
  USING DOS COMMANDS.                                         13        
  COPYING TO A COM PORT.                                      14        
  USING A TERMINAL EMULATOR.                                  14        
  USING THE MS WINDOWS TERMINAL PROGRAM                       15        
  USING A WORD PROCESSOR/EDITOR.                              16        
  USING THE HEADPHONES.                                       16        
  APPLICATION DEVELOPMENT.                                    16        
 
 PRODUCT SUPPORT.                                             17        
  BULLETIN BOARD SYSTEM (BBS)                                 17        
  CUSTOMER SUPPORT CENTER.                                    17        
  PRODUCT WARRANTY.                                           17                
  CUSTOMER RETURNS.                                           17        
 
 POST WARRANTY SERVICE                                        17        

SECTION 3 - CONFIGURATION.                                     19       
 
 FACTORY DEFAULTS.                                            19        
 
 CHECKING UNIT FUNCTION                                       19        
 
 NO "DECTALK IS CONNECTED" MESSAGE                            20        
  CHECKING CONNECTIONS                                        20        
  CHECKING COM PORTS                                          20        
 
 COM PORT CONFLICTS                                           20        
  AVOIDING COM PORT CONFLICTS                                 21        
  CHECKING COM PORT CONFIGURATION                             21        
 
 DEFAULT COMMUNICATIONS PORT.                                 22        
 
 LOADING THE DECTALK EXPRESS DRIVER                           22        
  SERIAL PORT CONFIGURATION OPTIONS                           22        
  CHANGING SERIAL PORT CONFIGURATION                          23        
 
 IDENTIFYING CONFLICTING DEVICES                              24        

SECTION 4 OWNER'S INFORMATION                                  25       
 THE DECTALK EXPRESS                                          25        
  DECTALK EXPRESS UNIT DESCRIPTION                            25        
  HARDWARE REQUIREMENTS:                                      26        
  SOFTWARE REQUIREMENTS:                                      26        
  DISTRIBUTION MEDIA:                                         26        
  PHYSICAL:                                                   26        
  POWER SUPPLY REQUIREMENTS:                                  26                
  MEMORY:                                                     27        
 ORDERING INFORMATION:                                        27        
 SOFTWARE LICENSING:                                          27        
 PRODUCT SUPPORT                                              27        
 PRODUCT WARRANTY                                             27        
 CUSTOMER RETURNS                                             27        
 
 POST WARRANTY SERVICE                                        28        
                                
                    SECTION 1  INSTALLATION.
                                
Introduction.

This guide provides installation information about the DECtalk
Express for general use with screen-reading software under the MS-
DOS operating system. To make reading easier, this manual uses
the term DECtalk when describing the system and system
performance. Also since many users of DECtalk Express may be
visually-impaired, descriptions are given of the size and shape
of the unit or other system components.

The purpose of this manual is to assist you in installing your
DECtalk Express. It is not meant as a technical reference manual.
For technical details on DECtalk Express, the DECtalk Technical
Reference Manual is available as part of the DECtalk Developer's
Toolkit. It can be downloaded as file TOOLKIT.ZIP from the
DECtalk BBS, 508-467-3806. A copy on diskette can be requested by
writing to:

  Assistive Technology Group
  Digital Equipment Corporation
  200 Forest Street,  MRO1-1/T33
  Marlboro, MA  01752
  ATTN: DECtalk Developer's Toolkit
  
Before You Begin.

You should not begin this installation unless:

     You can configure a serial communication port in your
       personal computer.
       
     You know how to use basic DOS commands and how to edit
       files.
       
If you do not feel that you can accomplish either of these tasks
it is highly recommended that you obtain the support of someone
who does.

README File.

It is highly recommended that you read the file README.TXT which
is on the Installation diskette and a print copy is also
provided.  The file contains last minute information which didn't
make it into this guide as well as identification and work-
arounds for known problems.

Configuring the Computer Communications Port.

The available communications port on you computer which you plan
to use to connect the DECtalk Express to must be configured to be
compatible with the DECtalk Express.

COM Ports and Available Interrupts.

The COM port on your computer that you choose to connect with the
DECtalk Express speech synthesizer must not be in use by any
other device and must have an available interrupt. Because the
four standard COM ports on PCs share only two interrupt lines,
certain ports may be unavailable for use even though they appear
to be free. Systems which use a serial mouse and a serial port
for communications (e.g. a modem) may not have a free serial
interrupt available.

Default COM Port and Settings.

The COM port defaults used by DECtalk Express are COM Port 1 used
with interrupt IRQ 4. Also the COM port's baud rate must be set
to "9600", the data bits equal to "8", the stop bits equal to
"one" and the parity set to "none". Refer to your computer's
hardware documentation to determine how to set these options.

Changing COM Settings.

If you want to use a COM port other than the default to
communicate with the DECtalk Express, please refer to Section 3,
Configuring DECtalk Express.

Note:  Prior to performing any hardware configuration which
requires removal of your computer's covers, turn the power to the
computer OFF and unplug the power cord from the wall outlet.
Failure to do so may result in serious injury to yourself and or
damage to your computer.

Installation Sequence.

The DECtalk Express must be connected to the AC power adapter,
connected to your computer and turned ON prior to starting the
installation. The unit will speak its startup self-test message
approximately fifteen seconds after the unit is turned ON. The
message will say "DECtalk Express is running" and give a power
status. Be sure to turn the volume to the maximum when you turn
it ON.

The DECtalk Express driver, DT_DRIV.EXE must also be loaded into
memory prior to installing any application software which
requires it, such as a screen access program. The driver is
loaded automatically if you choose the Standard Installation. The
following sections describe the details of the installation
procedure.

Checking the Parts.

The DECtalk Express unit and related parts are shipped to you in
a cardboard box. The following is a list of components which are
shipped with the DECtalk Express product.  Check the components
you have received against this list.

     1. A "Getting Started" Reference Card in Braille as well as
     regular print which is a copy of this list.
     
     2. A plastic "zip lock" bag containing the following items:
     
          A. The DECtalk Express User Guide. You are reading from
     this manual.
     
          B. An audio cassette which is a spoken version of this
     User Guide.
     
          C. A 3 and 1/2 inch diskette labeled "DECtalk Express
     Install".
     
          D. A Warranty Registration Card. Please fill out and
     return this pre-addressed registration card. This will also
     make it possible to alert you to any upgrades or changes.
     
     3. A DECtalk Express text-to-speech synthesizer unit in a
     nylon carrying case (Part No. 34-42609-01).
     
     4. An accessory pouch (part of Part No. 34-42609-01)
     containing the following items:
     
          A. Headphones (Part No. 30-41889-01) with an adjustable
     headband and a 45" cord with a 1/8 inch stereo plug
     connected to the end.
     
          B.  A 2-foot serial cable (Part No. BC16E-02) with 9-
     pin serial connector (Part No. H8571-J) at one end and a
     modular plug at the other end.
     
     5. A Battery charger/AC adapter unit (Part No. 30-42007-01).
     This unit is approximately 3"x3"x2" with an ac plug
     extending out of one side. The unit also has a 72" long cord
     extending from its side with a power plug on the end.
     
Please check the contents of your kit carefully. If any of the
above items are missing or appear to be damaged, call the DIGITAL
distributor from whom you purchased this product.

The DECtalk Express Unit.

Dimensions.

The DECtalk Express unit is approximately  3.5 inches wide by 7.5
inches long by 1.25 inches high and weighs 15 ounces.

Orientation.

For proper orientation, the unit should first be placed with its
bottom on a flat surface next to you computer. The bottom of the
unit has four rubber feet located at each corner. There are also
two Velcro tabs attached to the unit with their mating pieces.
You may remove the mating pieces if you do not plan to mount the
DECtalk Express unit or if you want to attach them later. Be
careful not to remove the tape covering the adhesive backing.

Locating Connectors and Controls.

The top side of the unit has a speaker grill consisting of three
concentric arcs. On the short side of the unit closest to the
speaker grille is a square cutout which is the modular jack for
the communications cable. Next to it is a round cutout which is
the jack for the headphone plug. On the opposite end of the same
side is a thumbwheel which serves as the on/off switch and the
volume control. The thumbwheel is rotated away from the headphone
jack to turn the unit On and to increase the volume.

On the opposite end of the unit is a single round cutout which is
the jack for the lower connector.

Charging the DECtalk Express.

Prior to operating the DECtalk Express solely on its battery, the
battery must be charged for at least four hours. The DECtalk
Express may be used while the battery is charging.

Connecting the battery charger/power supply.

The battery charger/power supply must be plugged into an
available AC wall outlet. At the end of the cord extending from
the unit is a power connector plug which must be inserted into
the power jack on the DECtalk Express.

Mounting the Unit.

The DECtalk Express unit may be attached to another device such
as a notebook cover or to the side of a monitor case by using the
Velcro tabs provided with the unit.  DECtalk Express ships with
the Velcro tabs and their mating pieces mounted to the back of
the unit. The surface that the unit is to be attached to must be
reasonably smooth, flat and free of dust, dirt or grease. The
procedure for mounting is:

     a. Place the unit with the Velcro tabs and their mating
pieces attached onto the surface you want to attach it to.

     b. Make sure that the unit will fit level on the surface
selected.

     c. Remove the adhesive backing from the Velcro mating
pieces.

     d. Orient the unit over the surface the unit will be
attached to.

     e. Carefully place the unit on the surface and press on it
firmly.

     f. The unit should be attached to the selected surface.

     g. The unit can be removed from the surface by gently
"peeling" the unit from the surface until the Velcro releases.

     h. The unit can be reattached by positioning the unit over
the mating Velcro tabs and pressing the unit down on them.

External Audio Equipment.

The audio output of the DECtalk Express can be connected to an
external electronic device such as "powered" speakers by using
the output from the stereo headphone output jack.

WARNING: The audio signal leads available through the stereo
headphone jack on the unit must be isolated from any other
external "grounded" connections. Plugging external equipment
(such as amplifiers which have one of the signal leads grounded)
into the headphone jack will result in the reduction or cessation
of output, decreased battery life, increased internal heat
generation, and in some cases damage to the unit. If the volume
output of the DECtalk Express decreases or ceases when an AC
powered device is plugged into the headphone jack, remove it
immediately to avoid damage to the DECtalk.

If you wish to utilize the grounded external device, it will be
necessary to install an audio isolation transformer between the
DECtalk Express output and the input to the grounded external
equipment. Such transformers are inexpensive and can be purchased
at most consumer electronics stores. "Powered Speakers", which
are powered by a wall-cube power supply without a third (ground)
prong and which are not connected to any other device are
generally suitable for direct connection to the DECtalk Express
without an isolating device.

Self-Test.

The DECtalk Express has a built-in self-test procedure. The
procedure is as follows:

     1. Insure that the on/off-volume switch on the DECtalk
Express is turned OFF. This can be done by turning the thumbwheel
all the way counterclockwise (towards the headphone jack). A
"click" should be heard when it is turned OFF. Do not force the
control. It may already be OFF. Try turning it ON to be sure.

     2. Plug the battery charger/power unit into an ac outlet and
connect the plug on the end of the cord into the power jack on
the DECtalk Express.

     3. Turn the DECtalk Express ON and turn the volume all the
way up.

     4. A short "chirp" should be heard almost immediately from
the speaker. This indicates that the unit has started it self-
test procedure.

     5. In approximately 15 seconds you should here the message
"DECtalk Express is running." and the power status message from
the speaker. This indicates that the self-test has been passed.

     6. If the unit has passed its self test and you can proceed
with the rest of the installation.

     7. If you do not hear the self test message, please refer to
Section 3 for problem resolution.

Connecting the DECtalk Express to your computer.

Your DECtalk Express is intended to work with computers equipped
with an available serial communications port.

The DECtalk Express is supplied with a 9-pin communications
connector which has a modular jack. Also supplied, is a two foot
long cable with modular plugs at each end. The modular plugs have
an insertion tab on one side. These insertion tabs must be lined
up with the corresponding cutout on the mating jacks on the
DECtalk Express and on the 9-pin connector. The plug will slide
into the jack when it is properly oriented and you should gently
push on it until the tab "clicks" into place.

Note: The 9-pin connector is shipped already attached to the
serial cable.

Once the cable has been connected to the DECtalk Express unit and
the 9-pin plug you can connect the 9-pin plug to the appropriate
9-pin jack of the serial port on your computer. The plug and
connector are "D" shaped and can only be connected one way. If
your computer's serial port uses a 25-pin connector, you will
need to obtain a 9-pin male to 25-pin female adapter at a local
computer or electronics store.

The DECtalk Express unit is now connected to your computer and
ready for the software installation.

Installing DECtalk Software.

     NOTE: Your system must be running DOS Version 3.3 or later
     and the DECtalk Express must be connected to your computer
     and be powered by the AC adapter during software
     installation.
     
During software installation, follow all the instructions on the
audio cassette. Sighted users will also be prompted by
instructions which appear on the PC monitors screen.

1. Turn your PC ON.

2. Choose a disk drive which takes a 3 1/2 inch diskette. In most
systems, this will be either Drive A or Drive B. Insert the
diskette labeled "DECtalk Express V4.2" or "DECtalk EXP V4.2" in
braille into the appropriate disk drive (either Drive A: or Drive
B:). Change the drive prompt to either A:\ or B:\.

3. Turn the DECtalk Express unit ON. If it is already on, turn it
Off and then On again. You should hear the self-test message
after the unit is turned On.

4. At the DOS prompt, type INSTALL and press the Enter key as
follows:

          INSTALL  (Press Enter).

In a few moments, you will hear rising tones from the PC speaker.
The following menu will also appear on the screen:

     Do the install using all the defaults.

          or

     Be prompted for installation variables.

Installation Options.

You now have a choice of using either the Standard Installation
or Custom Installation.


Standard Installation.

The Standard Installation does the following:

     A. Runs a utility, called Probe, which checks the four
standard PC COM port settings to locate an operating DECtalk
Express.

     B. Sets up a subdirectory on the system's hard disk called
DTEXP and installs all the necessary files into that
subdirectory.

     C. Adds DECtalk Express startup commands to the AUTOEXEC.BAT
file.

     D. Loads a "terminate-and-stay-resident" (TSR) driver,
DT_DRIV.EXE into memory.

     NOTE: This driver can be loaded into high memory. Refer to
     your operating system manual for details on loading programs
     into upper memory.
     
     E. Runs DT_START.EXE to inform you that the DECtalk Express
is ready to accept input or that an error was encountered when it
tried to connect to the DECtalk Express.

It is not necessary to view the monitor for the Standard
Installation.


Custom Installation.
The Custom Installation allows you to select the drive and the
name of the subdirectory. It also allows you the option not to
have your AUTOEXEC.BAT updated. The Custom Installation requires
that screen prompts must be followed.

The Custom Installation also allows you to select the specific
COM port that the DECtalk is connected to or to specify a COM
port with a non-standard IRQ interrupt.

Selecting an Installation Option.

It is recommended that the Standard Installation be used. The
Standard Installation attempts to locate the DECtalk Express by
polling the available serial ports and automates the installation
process.

However, if you have:

     (a) devices connected to other serial ports which cannot
       tolerate characters sent during polling, or
       
     (b) nonstandard hardware at any of the four standard serial
       port addresses, or
       
     (c) the DECtalk Express connected to a serial port at a
       nonstandard IRQ;
       
then you must use the Custom installation to correctly install
the DECtalk Express driver software.

STANDARD INSTALLATION.

In the default installation, rising tones from the PC speaker
mean press the Enter key.

Follow the rising tone prompts and press the Enter key when you
hear them. After a short period of time the installation will be
complete.  When the installation is complete, you will hear the
following message:

     "DECtalk Express is connected to COM port x". Where "x" is
number of the connected COM port.

CUSTOM INSTALLATION.

If you are visually impaired and choose not to use the default
installation, you will need the help of a sighted person as the
Custom Installation requires the use of screen prompts.

To use Custom installation, at the first installation screen
menu, press the down arrow and then press the Enter key to be
prompted for entering the installation variables.

From this point on, follow all instructions and respond to the
menu selections as requested.  When the installation is complete,
you will hear one of the following messages:

     "DECtalk Express is connected to COM port x.", where "x" is
     the number of the connected COM port.
     
                               or
                                
     "DECtalk Express is connected to a COM port at I/O address x
     and IRQ y.", where "x" is the specified I/O address and "y"
     is the specified IRQ.
     
No "DECtalk is Connected" Messages.

If no "DECtalk Express is connected ....." message is heard from
the unit and/or the message "DECtalk Express TSR error, . check
COM port settings." is displayed on the screen, please refer to
Section 3, Configuration.

Using DECtalk Express.

When the DECtalk Express is successfully connected to the PC,
refer to Section 2, "Using DECtalk Express" which provides
details on using the unit in various applications.

     WARNING: If you are using the DOSSHELL command in your
     AUTOEXEC.BAT file, the Install utility cannot place the
     DECtalk initialization commands before the DOSSHELL command.
     Therefore, when using DOSSHELL, you must manually place the
     DOSSHELL command as the last command in the AUTOEXEC.BAT
     file.
     


                                
               SECTION 2 - USING DECTALK EXPRESS.
                                
Power Status.

The DECtalk Express will speak a power status message after it
speaks its self test message. The message will indicate that the
unit is connected to external power or if it is not, it will
indicate whether the battery charge is satisfactory or low. If
the battery is low than the unit should be charged using the
supplied AC adapter/charger unit. The DECtalk Express can be used
while it is charging. It should take approximately 4 hours to
fully charge a discharged battery. This time applies whether the
unit is being used or not during the charge. Refer to the file
BATTCARE.TXT for hints on battery care.

Talk Time.

The DECtalk Express should speak essentially constantly at full
volume for approximately six hours on a full charge. The unit
will be operate longer as the volume and/or the percentage of
talk time is decreased.

Using DECtalk Express.

The DECtalk Express speech synthesizer is supported by a number
of third-party software application packages. It also can be used
to speak text files sent to it by using the DOS COPY command.

Third-party applications.

There are a number of application software packages which support
the DECtalk Express synthesizer. The primary applications are
screen-access, OCR reading and reading and writing aids. Please
refer to the application vendors' documentation for installing
and using the application.

Using DOS Commands.

There are a number of ways to output and listen to text. You may
copy a text file to a serial COM port, or use a terminal emulator
to type directly to the DECtalk using the PC as if it were a
terminal connected to a COM port.

   NOTE: The COM port which is used to attach the DECtalk
   Express to your computer should NOT be directly accessed by
   any other software. Doing so may cause a loss of
   communications with the DECtalk or may crash the computer's
   operating system.
   
Copying to a COM Port.

There are a number of ways to copy text files to DECtalk. You can
create a text file using a text editor and save that file. Then
use the COPY command to copy the text file to the COM port that
the DECtalk Express driver is configured to intercept commands
for.(COM4 is the default).

     NOTE: The hardware COM port (e.g. COM1) that the DECtalk
     Express is connected to can be and usually is different from
     the COM port that is used to copy text files to. The reason
     is that the DECtalk memory resident driver will intercept
     any system commands, like COPY, made to a specified COM port
     e.g., COM4 and redirect them to the physical COM port that
     the DECtalk Express is actually connected to. Because of
     this, it is not necessary to actually have hardware that
     supports the COM port that the file is copied to or to have
     an available interrupt. The redirection done by the DECtalk
     Express driver uses the physical COM port DECtalk is
     connected to and its associated interrupt
     
For example using the DECtalk defaults, to listen to a file
called DECTALK.TXT, type the following:

     COPY  DECTALK.TXT  COM4  (Press Enter).

The DECtalk driver will redirect the copy command to COM1 and the
DECtalk Express will then speak the text in the text file. Refer
to Section 3 for more details on setting the COM or printer ports
to COPY or PRINT files to the DECtalk Express.

      NOTE: DECtalk requires that all text be terminated by a
      period, exclamation mark, a question mark or a comma for
      it to start speaking immediately.
      
Using a Terminal Emulator.

There are a number of comm/terminal emulator software packages
such as KERMIT which will support BIOS calls to a COM device. A
user can create an ASCII text file using a text editor and then
run the comm package to transmit the file to the COM port that
the DECtalk Express program is set to receive. (The default port
is COM1.)  In terminal emulation mode, the comm packages will
allow you to type directly to a COM port.

     NOTE: If the DECtalk driver, DT_DRIV.EXE, is loaded in
     memory, you should always use BIOS calls like COPY to
     communicate with the DECtalk Express. Direct access to the
     COM port connected to the DECtalk while DT_DRIV.EXE is
     loaded may cause your computer's operating system to halt.
     DT_DRIV.EXE can be unloaded from memory by changing to the
     DECtalk Express subdirectory (default is DTEXP) and typing:
     
          DT_DRIV -r   and pressing the Enter key.

Using the MS Windows Terminal Program.

The Windows Terminal program may be used to send text files to
the DECtalk Express to speak. The Terminal program icon is
usually located in the Accessories Group. Double click on the
icon and the program will start. Select Settings(S) from the menu
bar and select Communications(C) from the drop down menu. Make
the following selections from the Communications options box 
(assuming that the DECtalk Express is connected to COM1).

       Baud Rate(B)                 9600
                                    
       Data Bits(D)                 8
                                    
       Stop Bits(S)                 1
                                    
       Parity(P)                    None
                                    
       Flow Control(F)              XON/XOFF
                                    
       Connector(C)                 COM1
                                    
Click on the OK button after you have made all your selections.

To send a file to the DECtalk Express, select the Transfer(T)
menu option and the Send Text File(S) from the drop down menu.
Enter the name of the text file in the File Name: window box. In
this example, the file will then be sent to the DECtalk connected
to COM1 to speak.

     NOTE: The DECtalk Express driver should not be loaded into
     memory when using the Windows Terminal program. The driver
     can be removed from memory by switching to the DECtalk
     Express subdirectory (default is DTEXP) and typing:
     
               DT_DRIV  -r (and press Enter).
     
Using a Word Processor/Editor.

If you are using a screen access program, then using a word
processor or editor should not be a problem. However, you cannot
send a word processing file in its internal file format using the
DOS COPY method described above. The file would first have to be
converted to an ASCII text or print file before it could be sent
to the DECtalk Express. Refer to the word processing application
documentation for specific conversion details.

Using the Headphones.

The headphones supplied with the DECtalk Express can be plugged
into the phone jack located next to the serial cable jack on the
unit. Inserting the headphone plug into the jack will disconnect
the built-in speaker. The volume required to operate the
headphones is usually less than that required for operation of
the speaker. It is highly recommended that the volume control be
turned down before using the headphones. The volume can then be
adjusted to your preference.

Serial Cable.

A 10 foot serial cable is available from DECdirect (800-344-
4825). The part number is BC16E-10.

Application Development.

If you are a programmer or developer who wishes to learn more
about how DECtalk works, a Technical Reference Manual is
available. It is part of the DECtalk Developer's Toolkit. The
Toolkit is available for download from the DECtalk BBS. The
number is 508-467-3806 and the file name is TOOLKIT.ZIP.


Product Support.

Bulletin Board System (BBS)

This product is supported by a Bulletin Board Service (BBS). The
purpose of the BBS is to provide customers with on-line
information. It is not monitored for messages. To access the BBS,
call (508) 467-3806. You will need to supply the BBS with your
first and last name and a password of your choice in order to
gain access. There will be instructions provided when you log on
to the BBS.

Customer Support Center.

If, after completing Chapters 1 and 2 of this Manual, you still
have difficulty installing your DECtalk Express,  call the
Digital Customer Support Center at (800) 354-9000 and select
option 2. When you are connected to a support person you need to
specify that you would like installation assistance for the DTC08-
AA or DECtalk Express.

Product Warranty.

This product is warranted by DIGITAL for one year from the date
of purchase. When you receive your DECtalk Express, please fill
out and return your Warranty Registration. This will also ensure
that you are notified in the event of updates.

Customer Returns.

If, during the warranty period, you determine that your DECtalk
PC requires service, please contact the Customer Return Center at
(800) 225-5385. Please refer to the product as the DTC08-AA or
DECtalk Express. The part number for the unit itself is 70-31254-
01. If you purchased the product directly from Digital Equipment
Corporation, you will be asked to provide your "DEC number" which
is on the shipping paperwork.  If you received the product from a
reseller, you will need to contact the reseller first for the
applicable "DEC number". Refer to Section 3. Configuration to
help identify the source of the problem. Doing so will ensure the
return of your unit to service as quickly as possible.

POST Warranty Service.

Repair service is available after the warranty has expired from
the Customer Returns Center at (800) 225-5385.

                                
                   SECTION 3 - CONFIGURATION.
                                
FACTORY DEFAULTS.

The DECtalk Express unit is configured at the factory and should
require no active hardware modifications on the part of the user.
The configured settings are 9600 baud, no parity, 8 data bits and
1 stop bit. The COM port I/O address and interrupt (IRQ) settings
are software settable.

CHECKING UNIT FUNCTION.

The DECtalk Express has a built-in self-test procedure. The
procedure is as follows:

     1. Insure that the on/off-volume switch on the DECtalk
Express is turned OFF. This can be done by turning the thumbwheel
all the way counterclockwise (towards the headphone jack). A
"click" should be heard when it is turned OFF. Do not force the
control. It may already be OFF. Try turning it ON to be sure.

     2. Plug the battery charger/power unit into an ac outlet and
connect the plug on the end of the cord into the power jack on
the DECtalk Express.

     3. Turn the DECtalk Express ON and turn the volume all the
way up.

     4. You should almost immediately hear a short "chirp" sound
from the units speaker indicating that the unit has started its
self-test.

     NOTE: The volume control must be turned almost all the way
     up to hear the "chirp" sound. If you don't hear it, wait 15
     seconds to see if you do hear the self-test message.
     
     5. In approximately 15 seconds, you should here the message
"DECtalk Express is running. External power on." from the speaker
if the unit has passed its self test. If the unit is connected to
the battery charger which is plugged into a "live" wall outlet
and it says "Battery Low" or "Battery OK", then the power supply
or wall outlet may be suspect.

If the unit still does not work at this point, call the Digital
Customer Support Center, 1 (800) 354-9000 and select Option 2.
When you are connected to a support person, specify that you
require assistance installing a DECtalk Express (option number
DTC08-AA). Otherwise continue with this checkout procedure.

No "DECtalk is Connected" Message.

If you have installed the DECtalk Express unit and software
according to the instructions provided in Section One, the unit
should speak the software startup message.  The unit should speak
"DECtalk Express Version 4.2C is running". (The version number
may be different from the one shown here.)
If the unit fails to respond, or if an error beep and screen
error message is encountered, the unit may not be connected
correctly or the COM port settings may have to be changed to
resolve conflicts with other options. Please refer to the
README.TXT file for any suggestions for resolving any known
conflicts.

Checking Connections.

If the unit speaks its self-test message but not the Installation
start-up message, then the connections between the DECtalk
Express and the PC's serial COM port should be checked first.
Insure that the serial cable is firmly seated in the jack on the
DECtalk Express unit and into the connector on the other end.
Also check to be sure that the connector is firmly seated into
the PC's serial COM port connector.

Checking COM Ports.

The DECtalk Express Installation program uses a utility to check
the COM ports to see if a DECtalk Express is connected to any one
of them. If the DECtalk Express is ON, connected to a COM port on
the PC, the COM port is configured correctly and there aren't any
conflicts with other devices, the utility will find the DECtalk
Express and configure the driver accordingly and speak the
"DECtalk Express is connected to...." message.

COM Port Conflicts.

Most PCs will allow up to four COM ports at the settings shown in
Table 1 below. The unfortunate situation is that ports 1 and 3
share the same interrupt (IRQ 4) and ports 2 and 4 also share the
same interrupt (IRQ 3). Placing devices which use the interrupts
on either of these pair of COM ports will prevent one or both
devices from operating properly. For instance, having a serial
mouse on COM 1 and the DECtalk Express on COM 3 will probably
mean that one or both of these options will not work correctly or
at all. The same holds true for devices on COM 2 and COM 4.

Avoiding COM Port Conflicts.

Devices may be attached to these pairs of COM ports if one of the
devices can support the setting of a non-standard IRQ setting.
Usually COM port 1 and most times COM port 2 are part of the
system board and do not support non-standard settings. For
instance, if a COM port adapter card set for COM port 3
allowed the setting of a non standard IRQ of 5, then the serial
mouse could be attached to COM 1 and an external modem attached
to COM 3 which is set at IRQ 5. A similar situation could be to
have the DECtalk Express use the standard settings for COM 2 (IRQ
3) and have an internal modem use COM 4 but with and IRQ of 5.

Checking COM Port Configuration.

If the Installation program cannot find a DECtalk Express on a
standard COM port or at the COM port settings you specified, it
recommended that you use the COMCHK utility program to identify
which COM port the DECtalk Express is connected to.

Run the program by typing COMCHK and press the Enter key. The
program will check the four standard COM port I/O address' in a
PC for an operating DECtalk Express. The utility will report the
results of its tests on the PC monitor. The message "DECtalk
Express found on Com port X" where "X" is the com port number
will be spoken when an operational DECtalk Express is found. If
the unit is found by the utility, then a Custom installation can
be tried using the com port and IRQ the unit was found on as the
answer to the questions "Which com port ." and "which IRQ."
A beep will sound from the PC speaker if an operating DECtalk
Express is not found on any of the COM ports.

If the COMCHK utility does not find a DECtalk Express on Com
ports 1-4 then other utilities can be used to try to identify the
COM ports in your system and their settings.

NOTE: The Installation program sets the DECtalk EXpress batch
file to remove the resources used by the DECtalk Express from the
system inventory. This is done to try to prevent conflict with
other devices which may also try to use the same resources.
System utility programs like MSD.EXE which check COM port
settings will then no longer show any resources for that specific
COM port. The resources are returned to normal when the system is
rebooted and the DECtalk driver is not loaded.

Default Communications Port.

If the Standard Installation program cannot locate the DECtalk
Express on a standard COM port as defined in Table 1 below, it
will set the driver parameters to the default. The default
communications port for the DECtalk Express memory resident DOS
program, DT_DRIV.EXE, is COM1 using base I/O address 3f8 and IRQ
4.

Loading the DECtalk Express Driver.

The DECtalk Express driver, DT_DRIV.EXE is loaded into memory
with the detected COM port settings when the system is booted if
you chose the Standard installation.  The driver will also be
loaded with the settings you selected if you had the Install
program update AUTOEXEC.BAT during a Custom installation.

If you selected the Custom Installation and selected standard COM
settings, the program will set the standard settings e.g., I/O
address and IRQ, for that particular COM port. If you selected
the non-standard option, then the COM port and IRQ settings you
selected will be loaded by the program.

The driver can also be loaded manually into memory with the COM
settings of your choice using the following serial port
configuration procedure.

Serial port configuration options.

The following options are used by DT_DRIV to select the
communications port used to connect the DECtalk Express to your
computer:

     DT_DRIV -C # -B xxx -I d

     where:

               "#" is the COM port number for COPY command
trapping.

               "xxx" is the I/O base address of the serial port.

                "d"  is the IRQ used by the serial port.

The standard PC COM port configurations are listed in Table 1.

Table 1. - Serial COM Port Settings

  COM port     COPY PORT (#)   I/O Address (XXX)   IRQ (d)
                                                       
    COM1             0                3F8             4
                                                       
    COM2             1                2F8             3
                                                       
    COM3             2                3E8             4
                                                       
    COM4             3                2E8             3
                                                       


Changing Serial Port Configuration.

The easiest way to change the COM port settings for the DECtalk
Express driver is to rerun the Installation program and select
the Custom installation. The Custom installation provides the
ability to select a standard COM port number or to select a COM
port at a non-standard IRQ number.

Alternatively, the parameters can be changed by editing the
DTEXP.BAT file which is located in the default DECtalk Express
directory, DTEXP, or in the directory that you specified during
installation. To change the communications port parameters, at
the DOS prompt, do the following:

  1. Edit the DT_DRIV command string in the file DTEXP.BAT. The
Default Install program puts this file in the DTEXP subdirectory.

  2. Find the line which reads  DT_DRIV -C -b 3f8 -I 4.

NOTE: the "-b" and "-I" settings may differ from those that are
shown here.

  3. Change the port parameters using the serial port settings
listed in the above serial COM port settings table or to the non-
standard settings of the I/O device you are using.

For example, to change the physical communications port to COM3,
the base address to 3E8 and the IRQ to 5 you would type the
following:

       DT_DRIV -C (space) -b (space) 3E8 (space) -I (space) 5

The COPY command trapping of the pseudo COM4 will remain
unchanged.

NOTE: These base I/O address and IRQ settings must match the
settings on the communications option installed in your PC.

  4. Save the changes to the file.

  5. Type DTEXP and press the Enter key.

The system will attempt to load the DECtalk Express TSR with the
newly specified settings. The DECtalk Express will now speak its
"DECtalk Express is connected to.... ." if all of the COM
settings are correct.

Identifying Conflicting Devices.

If the TSR still fails to load, then it may be necessary to
temporarily remove other options that use the COM ports like
internal modems, serial mice, etc until a satisfactory
installation is made. Once the conflicting device is identified,
then adjustments in the systems resources utilized will have to
be made to resolve them. The paragraph above titled "Avoiding COM
Port Conflicts" can be used as a basis for resolving the resource
conflict.

                                
                            SECTION 4.
                       OWNER'S INFORMATION.
                                
This section contains general information about the DECtalk
Express unit. This information is for reference purposes.

The DECtalk Express.

Video terminals display information from a computer on a screen.
Printers display the same information on paper. These devices
allow you to communicate with computers through the sense of
sight. The DECtalk Express is another device that allows you to
communicate with computers. However, this device speaks
information in highly intelligible synthesized speech. It allows
you to communicate naturally through the senses of listening (the
user) and speaking (DECtalk Express).

DECtalk Express is an external PC option and a set of software
components which, when properly loaded on a DOS personal
computer, will provide synthesized voice output of ASCII text
sent to it by other PC software applications such as "screen
readers". The interface to DECtalk Express for both commands and
text is via a memory-resident DOS driver or directly using in-
line text commands. Refer to the files COMMAND.TXT and
SHRT_CMD.TXT for more information. DECtalk Express is designed to
read standard ASCII text in an intelligible and natural manner.

The DECtalk Express unit, when connected to a PC or PC-compatible
computer and used in conjunction with application software such
as a screen-reader, allows you to create your own talking
workstation. You can hear the text you have stored in a file or
any text which appears on your computer screen or typed at the
keyboard.

     Note:   The screen reader software application must
     specifically state that it supports the DECtalk Express
     voice synthesizer option. Furthermore, not all of the
     capabilities of DECtalk Express may be utilized by the
     software application program which controls the DECtalk
     Express DOS device driver.
     
DECtalk Express unit Description.

The DECtalk Express unit is a high-quality text-to-speech
synthesizer. The unit provides hardware and firmware components
which, when coupled with special speech synthesis software, offer
highly intelligible and natural speech.

Hardware Requirements:

1. IBM PC, IBM XT, IBM AT or 100% compatible personal computer.

2. An asynchronous serial communications port supporting 9600
baud transfer rate, 8 data bits, one stop bit, no parity and
XON/XOFF protocol.

3. A diskette drive capable of reading a 3.5 inch (1.4MB)
diskettes to load the distribution media.

4. A minimum of 22KB of system memory available to run the
DECtalk Express memory resident DOS driver.

5. A hard disk drive with at least 1Mbyte available space.

Software Requirements:

Operating system support:  DOS V3.3, V4.0x, V5.0, V6.x

DECtalk Express V4.2 software

     Note: The minimum hardware/software requirements for any
          future version of this product may be different from
          the specific requirements for the current version.
          
Distribution Media:

3 1/2 inch Diskette (1.4MB).

Physical:

The DECtalk Express unit is an external PC option measuring
approximately 3.5"x7.5"x1.25". It weighs less than one pound. It
connects to the PC via an available COM port.

Power Supply Requirements:

The DECtalk Express unit is supplied with its own power which
plugs into an ac outlet. The unit must supply 12VDC, 400mA
Regulated power. The "tip" is Positive (+) polarity.

Memory:

22 KBytes of PC memory is required to run the DECtalk device
driver.

Ordering Information:

The software license, media and documentation are bundled with
the  DECtalk Express unit.

Software Licensing:

This software product is furnished under licensing provisions of
Digital's Standard Terms and Conditions. For more information
about Digital's licensing terms and policies, contact your local
DIGITAL office.

Product Support.

After completing Chapters 1-3 of this Manual, if you still have
difficulty installing your DECtalk Express, call the Digital
Customer Support Center, 1 (800) 354-9000 and select Option 2.
When you are connected to a support person, specify that you
require assistance installing a DECtalk Express (option number
DTC08-AA).

Product Warranty.

Warranty for this product is provided by DIGITAL with the
purchase of  the product as defined in the Warranty. The warranty
on this product is effective for one year from date of purchase.
When you receive your DECtalk Express, please fill out and return
your Warranty Registration. This will also ensure that you are
notified in the event of updates.

Customer Returns.

If, during the warranty period, you determine that your DECtalk
Express requires service, please contact the Customer Return
Center at (800) 225-5385. Please refer to the product as either
DTC08-AA or DECtalk Express. The unit itself has a part number of
70-31254-01.

If you purchased the product directly from Digital Equipment
Corporation, you will be asked to provide your DEC number which
is on the shipping paperwork.  If you received the product from a
reseller, you will need to contact the reseller first for the
applicable DEC number.

Battery Service.

This product contains a nickel-cadmium rechargeable battery pack
(Part No. 12-41261-01) which must be disposed of properly. This
battery is NOT customer replaceable, therefore, please return 
the entire unit to your dealer or to DIGITAL for service and/or 
disposal of the battery. Contact the Customer Return Center 
(800)-225-5385 for information.

POST Warranty Service.

Repair service is available after the warranty has expired. Contact
your reseller or the Customer Returns Center at (800) 225-5385 
for more information. 

End of file.

