Advantech AWS-8248 User Manual

AWS-8248

Industrial Workstation
with 14.1" LCD Display

Users Manual

i

Copyright

This document is copyrighted January, 2002, by Advantech Co., Ltd. All
rights are reserved. Advantech Co., Ltd. reserves the right to make
improvements to the products described in this manual at any time. Spec­ifications are thus subject to change without notice.
No part of this manual may be reproduced, copied, translated, or transmit­ted in any form or by any means without the prior written permission of
Advantech Co., Ltd. Information provided in this manual is intended to
be accurate and reliable. However, Advantech Co., Ltd., assumes no
responsibility for its use, nor for any infringements upon the rights of
third parties which may result from its use.

Acknowledgements

AWS-8248T, AWS-8248TP, AWS-8248T-T, and AWS-8248TP-T are all
trademarks of Advantech Co., Ltd. IBM and PC are trademarks of Inter­national Business Machines Corporation. MS-DOS is a trademark of
Microsoft Corporation. All other brand and product names mentioned
herein are trademarks or registered trademarks of their respective owners.

Part No. 2002824800 1st Edition
Printed in Taiwan January 2002

AWS-8248 Users Manual ii

FCC Class A

This equipment has been tested and found to comply with the limits for a
Class A digital device, pursuant to Part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interfer­ence when the equipment is operated in a commercial environment. This
equipment generates, uses and can radiate radio frequency energy. If not
installed and used in accordance with this user's manual, it may cause
harmful interference to radio communications. Operation of this equip­ment in a residential area is likely to cause harmful interference, in which
case the user will be required to correct the interference at his own
expense.

iii

Packing List

Before you set up the AWS-8248, make sure that the following items
have been included in your package, and that this manual is in good con­dition. If anything is missing or damaged, contact your dealer immedi­ately:

• One AWS-8248 industrial workstation with 14.1" flat panel display

• One accessory box, including:

- One power cord

- One keyboard transfer cable

- One HMI products drivers and utilities CD-ROM

- AWS-8248 User's Manual

- Flat gray cable for 3.5" HDD and slim CD-ROM

- RS-232 cable to link touchscreen to CPU card (for -T models only)

- TSCB-9516 drivers installation guide (for -T models only)

- Screw bag with screws­ If any of these items is missing or damaged, contact your distributor or sales

representative immediately.

Additional Information and Assistance

1.Visit the Advantech web site at www.advantech.com where you can
find the latest information about the product.

2.Contact your distributor, sales representative, or Advantech's customer
service center for technical support if you need
additional assistance. Please have the following information ready before
you call:

•Product name and serial number

•Description of your peripheral attachments

•Description of your software (operating system, version, application
software, etc.)

•A complete description of the problem

•The exact wording of any error messages

AWS-8248 Users Manual iv

Safe ty In st ru ct ions

1. Read these safety instructions carefully.

2. Keep this User's Manual for later reference.

3. Disconnect this equipment from any AC outlet before cleaning. Use a damp
cloth. Do not use liquid or spray detergents for cleaning.

4. For plug-in equipment, the power outlet socket must be located near the
equipment and must be easily accessible.

5. Keep this equipment away from humidity.

6. Put this equipment on a reliable surface during installation. Dropping it or let­ting it fall may cause damage.

7. The openings on the enclosure are for air convection. Protect the equipment
from overheating. DO NOT COVER THE OPENINGS.

8. Make sure the voltage of the power source is correct before connecting the
equipment to the power outlet.

9. Position the power cord so that people cannot step on it. Do not place anything
over the power cord.

10. All cautions and warnings on the equipment should be noted.

11. If the equipment is not used for a long time, disconnect it from the power
source to avoid damage by transient overvoltage.

12. Never pour any liquid into an opening. This may cause fire or electrical shock.

13. Never open the equipment. For safety reasons, the equipment should be
opened only by qualified service personnel.

14. If one of the following situations arises, get the equipment checked by service
personnel:
a. The power cord or plug is damaged.
b. Liquid has penetrated into the equipment.
c. The equipment has been exposed to moisture.
d. The equipment does not work well, or you cannot get it to work according

to the user's manual.
e. The equipment has been dropped and damaged.
f. The equipment has obvious signs of breakage.

15. DO NOT LEAVE THIS EQUIPMENT IN AN ENVIRONMENT WHERE
THE STORAGE TEMPERATURE MAY GO BELOW -20° C (-4° F) OR
ABOVE 60° C (140° F). THIS COULD DAMAGE THE EQUIPMENT. THE
EQUIPMENT SHOULD BE IN A CONTROLLED ENVIRONMENT.

The sound pressure level at the operator's position according to IEC 704-1:1982 is
no more than 70dB (A).

DISCLAIMER: This set of instructions is given according to IEC 704-1. Advan­tech disclaims all responsibility for the accuracy of any statements contained
herein.

v

W ic ht i ge Si ch e rh ei s hi nw e is e

1. Bitte lesen sie Sich diese Hinweise sorgfältig durch.

2. Heben Sie diese Anleitung für den späteren Gebrauch auf.

3. Vor jedem Reinigen ist das Gerät vom Stromnetz zu trennen. Verwenden Sie
Keine Flüssig-oder Aerosolreiniger. Am besten dient ein angefeuchtetes Tuch
zur Reinigung.

4. Die NetzanschluBsteckdose soll nahe dem Gerät angebracht und leicht
zugänglich sein.

5. Das Gerät ist vor Feuchtigkeit zu schützen.

6. Bei der Aufstellung des Gerätes ist auf sicheren Stand zu achten. Ein Kippen
oder Fallen könnte Verletzungen hervorrufen.

7. Die Belüftungsöffnungen dienen zur Luftzirkulation die das Gerät vor überhit­zung schützt. Sorgen Sie dafür, daB diese Öffnungen nicht abgedeckt werden.

8. Beachten Sie beim. AnschluB an das Stromnetz die AnschluBwerte.

9. Verlegen Sie die NetzanschluBleitung so, daB niemand darüber fallen kann.
Es sollte auch nichts auf der Leitung abgestellt werden.

10. Alle Hinweise und Warnungen die sich am Geräten befinden sind zu
beachten.

11. Wird das Gerät über einen längeren Zeitraum nicht benutzt, sollten Sie es vom
Stromnetz trennen. Somit wird im Falle einer Überspannung eine Beschädi­gung vermieden.

12. Durch die Lüftungsöffnungen dürfen niemals Gegenstände oder Flüssigkeiten
in das Gerät gelangen. Dies könnte einen Brand bzw. elektrischen Schlag aus­lösen.

13. Öffnen Sie niemals das Gerät. Das Gerät darf aus Gründen der elektrischen
Sicherheit nur von authorisiertem Servicepersonal geöffnet werden.

14. Wenn folgende Situationen auftreten ist das Gerät vom Stromnetz zu trennen
und von einer qualifizierten Servicestelle zu überprüfen:
a - Netzkabel oder Netzstecker sind beschädigt.
b - Flüssigkeit ist in das Gerät eingedrungen.
c - Das Gerät war Feuchtigkeit ausgesetzt.
d - Wenn das Gerät nicht der Bedienungsanleitung entsprechend funktioniert

oder Sie mit Hilfe dieser Anleitung keine Verbesserung erzielen.
e - Das Gerät ist gefallen und/oder das Gehäuse ist beschädigt.
f - Wenn das Gerät deutliche Anzeichen eines Defektes aufweist.

Der arbeitsplatzbezogene Schalldruckpegel nach DIN 45 635 Teil 1000
beträgt 70dB(A) oder weiger.

DISCLAIMER: This set of instructions is given according to IEC704-1.
Advantech disclaims all responsibility for the accuracy of any statements
contained herein.

AWS-8248 Users Manual vi

Table of Contents

Contents

Chapter 1 Introduction ......................................................1

1.1 Introduction....................................................................... 2

Figure 1.1: The PCA-6108C and PCA-6107P2 passive back-

planes.................................................................. 3

1.2 Specifications .................................................................... 4

1.3 Front and rear panel layout................................................ 7

Figure 1.2: Front panel layout...............................................7

Figure 1.3: Rear panel layout ................................................ 7

1.4 Dimensions........................................................................ 8

Figure 1.4: AWS-8248 dimensions....................................... 8

Chapter 2 System Setup.....................................................9

2.1 General ............................................................................ 10

2.2 Detaching the work drawer............................................. 10

Figure 2.1: Detaching the work drawer...............................11

2.3 Adding cards ................................................................... 12

Figure 2.2: Installing add-on cards...................................... 12

2.4 Installing optional drives................................................. 13

Figure 2.3: HDD installation............................................... 14

Figure 2.4: Slide CD-ROM installation ..............................14

Figure 2.5: Installing optional drives .................................. 14

2.5 Attaching cables.............................................................. 15

Figure 2.6: Connect the display power................................ 15

Figure 2.7: Cables on the rear panel.................................... 15

2.6 Rack mounting ................................................................ 16

Figure 2.8: Rack mounting the AWS-8248.........................16

2.7 Panel mounting................................................................ 17

Figure 2.9: Panel mounting the AWS-8248........................17

Chapter 3 Maintenance....................................................19

3.1 Passive backplane............................................................20

Figure 3.1: Removing the passive backplane......................20

3.2 Power supply................................................................... 21

Figure 3.2: Removing the power supply .............................21

3.3 LCD display module ....................................................... 22

Figure 3.3: Removing LCD display module (first steps).... 22

Figure 3.4: Removing LCD display module (final steps) ... 23

3.4 Keyboard translator......................................................... 24

Figure 3.5: Keyboard translator input/output (actual)......... 24

Figure 3.6: Keyboard translator input/output (schematic).. 25

Figure 3.7: Removing the keyboard translator....................26

vii

3.5 LED board.......................................................................27

Figure 3.8: Removing the LED board................................. 27

3.6 Floppy disc drive (FDD)................................................. 28

Figure 3.9: Removing the FDD...........................................28

3.7 Membrane keypad........................................................... 29

Figure 3.10:Replacing the membrane keypad..................... 30

3.8 Touchscreen sensor (-T models) ..................................... 31

Figure 3.11:Replacing the touchscreen sensor .................... 32

Chapter 4 Macro Key Programming..............................33

4.1 Introduction..................................................................... 34

4.2 Macro Key Review.......................................................... 34

4.3 Syntax..............................................................................35

4.4 How to use SFED8248.COM.......................................... 37

Figure 4.1: The Macro Editor screen ..................................37

4.5 Example........................................................................... 38

Figure 4.2: Macro examples................................................ 38

Appendix A Display Timing Mode & OSD ......................41

A.1 Supported Input Timing Modes ...................................... 42

Table A.1: Supported Input Formats ................................. 42

A.2 OSD Operation Keypad .................................................. 43

Table A.2: Keypad functions............................................. 43

A.3 OSD function and operation............................................ 44

Figure A.1:OSD menu ........................................................ 44

Table A.3: OSD Functionality........................................... 44

Appendix B Power Supply Specification...........................45

B.1 Supported Input Timing Modes ...................................... 46

B.2 -48 V DC power supply .................................................. 47

Table B.1: -48 VDC power supply output characteristics. 48

Table B.2: -48 VDC power supply DC output wire list .... 51

B.3 24 VDC power supply..................................................... 52

Appendix C Touchscreen (optional) ..................................55

C.1 Specifications ..................................................................56

C.2 Installation of Touchscreen Driver.................................. 57

viii

Introduction

• Introduction

• Specifications

• Front and rear panel layout

•Dimensions

CHAPTER

1

1 Chapter 1 Introduction

Chapter 1 Introduction

1.1 Introduction

We designed the AWS-8248 specifically for the factory floor and other
harsh industrial environments. This 19" rack/panel-mount workstation
offers full state-of-the-art industrial computing technology packaged
within one compact unit. It includes a 14.1" color LCD monitor, 7-slot
passive backplane, slide-out "work drawer" card cage, 250-watt power
supply, 3½" floppy disk drive (slim CD-ROM and 3½" HDD optional),
front and rear 5-pin keyboard connectors and a sealed front panel that
conforms to NEMA 4 and NEMA 12 specifications. All of these features
are housed in a rugged workstation chassis which provides protection
from dust, vibration and moisture.

14.1" Color LCD

• Vertical and flat screen for better display quality

• High resolution display (1024 x 768)

• Anti-static treatment on the glass surface to minimize dust accumula­tion on the monitor

• Digital screen adjustment for accurate picture quality

39-key sealed-membrane operating keypad

You can enter numerical data using the workstation's convenient 39-key
sealed-membrane operating keypad. The keypad has excellent tactile
response. You can also attach an external keyboard through a connector
on the front panel.

Programmable macro function keys

An additional membrane keypad offers 10 ordinary function keys (F1 ~
F10) and 10 programmable macro keys (SF1 ~ SF10). Macro keys auto­mate common key sequences, even inside application programs.

Front-accessible control panel

You can easily access the workstation's controls from the front of the unit
via a sturdy protective door. Controls include LEDs, and switches for
power and system reset. The front panel also holds a 3½" 1.44 MB FDD.

The aluminum door protects the controls from the environment outside.
The door has a waterproof foam-rubber seal and captive handscrew to
hold it closed. In addition, the door offers protection against accidental
operation of the unit's controls.

AWS-8248 User’s Manual 2

Passive backplanes

The AWS-8248 offers two types of passive backplanes, the PCA-6108C
and the PCA-6107P2. They allow you to run your industrial applications
from a variety of full-featured CPU cards.

Figure 1.1: The PCA-6108C and PCA-6107P2 passive backplanes

The backplanes are formed from four-layer PCBs with ground and power
planes to reduce noise and power-supply impedance. They have LED
power indicators for +5 V, +12 V, -5 V and -12 V.

Advantech's PCA-6107P2 passive backplane can be installed into the
AWS-8248TP. It contains two PCI-compatible slots, four PC/AT-compat­ible (ISA-bus) slots and one dedicated slot for a CPU card. Three power­connectors are also included in the PCA-6107P2.

Alternatively, Advantech's PCA-6108C passive backplane can be
installed into the AWS-8248T. It contains eight PC/AT-compatible (ISA­bus) slots, termination resistors for high-speed signals and terminal block
connectors to supply power from the board.

Convenient work drawer

The AWS-8248's "work drawer" card cage slides out in a snap for
reduced MTTR. It makes adding or exchanging plug-in cards and chang­ing power supplies quick and easy. Our standard PC/AT compatible pas­sive backplane lets you run your industrial applications from a variety of
full-featured CPU cards. and easy overclocking of frequency and Vcore
voltages all through the BIOS Specifications.

3 Chapter 1 Introduction

1.2 Specifications

General

• Construction: Heavy-duty aluminum and steel chassis

• Disk drive housing: Holds one 3½" FDD, one slim CD-ROM and

one 3½" HDD (slim CD-ROM and HDD optional)

• Cooling system:

- One 32 CFM fan (flow out) on rear panel for power supply

- One 29 CFM fan (flow in) for monitor on rear panel

- One 36 CFM fan in the chassis for plug-in cards

• Dimensions:

- Width: 482 mm (19.0")

- Depth: 450 mm (17.7")

- Height: 356 mm (14.0")

• Weight: 29 kg (63.9 lbs)

LCD Display

- Display type: 14.1" TFT LCD

- Max. resolution: 1024 x 768

- Maxi. colors: 262K

2

- Luminance (cd/m

- Viewing angle: 90°(H), 50°(H)

- Operating temperature: 0 ~ 50°C

- LCD MTBF: 50,000 hours

- Backlight lifetime: 50,000 hours

- Interface: Direct VGA

- LCD defect specification: refer to Advantech web site

Front Panel

• Keypads: One with 39 operating keys, one with 10 function keys
and 10 programmable macro function keys

): 200

AWS-8248 User’s Manual 4

• Keyboard connector: Pre-wired 5-pin DIN connector with dust­protection cover on front and rear panel

• Switches: Reset and power on/off.

Passive backplane

• AWS-8248T & AWS-8248T-T:

8 ISA slot passive backplane

• AWS-8248TP & AWS-8248TP-T:

4 ISA / 2 PCI / 1 CPU slot passive backplane

Power supply

• AC input: 250 W (standard offer)

• Input voltage:

85 ~ 130 V

or 180 ~ 260 VAC , switchable

AC

• Output voltage:

+5 V @ 25 A; +12 V @ 9 A; -5 V @ 0.5 A; -12 V @ 2.0 A

• MTBF: 100,000 hours

• Safety: UL/CSA/TUV

-48 V

• Input voltage: -38 ~ -58 V

input 310 W (optional)

DC

DC

• Output voltage:

+5 V @ 30 A; +12 V @ 10 A; -5 V @ 1.0 A; -12 V @ 5 A

• MTBF: 100,000 hours

24 V

• Input voltage: 19 ~ 32 V

input 250 W (optional)

DC

DC

• Output voltage:

+5 V @ 25 A; +12 V @ 10 A; -5 V @ 1.0 A; -12 V @ 1.0 A

• MTBF: 100,000 hours

Compact CD-ROM kit (optional)

• 24x slim CD-ROM kit with support bracket

(model no. CDR-825-0024)

5 Chapter 1 Introduction

Environmental specifications

• Operating temperature: 0 ~ 50° C (32 ~ 122° F)

• Relative humidity: 5 ~ 85% @ 40° C, non-condensing

• Vibration: 5 ~ 17 Hz, 0.1" double-amplitude displacement 17 ~

500 Hz, 1.0 G peak to peak.

AWS-8248 User’s Manual 6

1.3 Front and rear panel layout

Figure 1.2: Front panel layout

Figure 1.3: Rear panel layout

7 Chapter 1 Introduction

1.4 Dimensions

Figure 1.4: AWS-8248 dimensions

AWS-8248 User’s Manual 8

System Setup

• General

• Detaching the work drawer

• Adding cards

• Installing optional drives

• Attaching cables

• Rack/Panel mounting

CHAPTER

2

9 Chapter 2 System Setup

Chapter 2 System Setup

2.1 General

When you receive your workstation you will find a backplane, power
supply, and floppy disk drive already installed. Further setup of the AWS­8248 is easy. All you have to do is slide out its work drawer module,
install a CPU card, optional hard disk drive and whatever additional I/O
cards your application requires. You can then mount your workstation
into a 19-inch rack or into a panel.

Warning!

1. Do not begin your installation until you are sure
there is no power flowing within the AWS-8248.
Power must be switched off and the main power
cord unplugged.

2. Every time you service the AWS-8248, you
should switch the power off and unplug the main
power cord.

2.2 Detaching the work drawer

The work drawer is a card cage that slides in and out of the body of the
AWS-8248, providing easy access to your cards, drives and power sup­ply.

1. Detach the cables that connect the work drawer to the main chassis.

2. Detach the main power cord, keyboard and video connectors from
the work drawer.

3. Four screws on the back of the AWS-8248 hold the drawer in the
chassis. Remove the screws, and the drawer can then slide out
freely.

AWS-8248 User’s Manual 10

Figure 2.1: Detaching the work drawer

11 Chapter 2 System Setup

2.3 Adding cards

Remove the cover of the work drawer by either removing the 10 screws
that attach it or by sliding it out. Remove the screw that fixes the card
hold-down clamp, and remove the clamp.

Slowly slide the card in and carefully press it into the backplane socket.
Secure it by screwing it into the top mounting bar. (See Fig. 2-2.) Connect
the card wiring. Add any additional cards or take out cards you need to
service. Reattach the hold-down clamp. When you have finished, reattach
the cover.

Figure 2.2: Installing add-on cards

AWS-8248 User’s Manual 12

2.4 Installing optional drives

The AWS-8248 provides space for three disk drives underneath the work
drawer. That is, one floppy disk drive, one hard disk drive and one slim
CD-ROM drive. If you wish, you can add an extra hard disk drive and an
extra slim CD-ROM drive above the power supply. (See Figs. 2-1 and 2-

3.)

1. Remove the six screws at the rear of the work drawer and pull
down the power supply assembly using the handle. You will find a
drive bay for fixing an HDD and a slim CD-ROM drive.

2. Detach the four screws from the drive bay, and slide out the two
drive-support brackets.

3. Attach the HDD by fixing it to the drive support brackets with the
six screws.

4. Add the optional CD-ROM (CDR-825-0024) over the HDD, and
tighten it with the six screws.

5. Slide the assembled HDD and CD-ROM drive into the drive bay.

6. Attach a 40-pin ribbon cable with two connectors; one being a
power connector to the HDD, and the other being a power connec­tor to the CD-ROM.

7. Secure the drive in the drive bay with the screws, and attach this
assembly to the work drawer.

13 Chapter 2 System Setup

Figure 2.3: HDD installation

Figure 2.4: Slide CD-ROM installation

Figure 2.5: Installing optional drives

AWS-8248 User’s Manual 14

2.5 Attaching cables

Once you have added your cards, drives and other equipment, connect the
display power (see Fig. 2-6, and reattach the cables on the rear panel (see
Fig. 2-7), you should switch on the AWS-8248 and confirm that it works.

Figure 2.6: Connect the display power

Figure 2.7: Cables on the rear panel

15 Chapter 2 System Setup

2.6 Rack mounting

The AWS-8248 can be mounted in a 19" rack. Ensure that all addi-tional
equipment has been installed correctly and that the cabling has been reat­tached. (See Fig. 2-7) Remove the screw covers on the front panel. Attach
the case to the rack using screws on both sides.

Figure 2.8: Rack mounting the AWS-8248

AWS-8248 User’s Manual 16

2.7 Panel mounting

Panel mounting the AWS-8248 is easy. Just line up the holes in the panel
aperture and the holes on the panel, and then secure the AWS-8248 to the
panel with the mounting bolts.

Figure 2.9: Panel mounting the AWS-8248

17 Chapter 2 System Setup

AWS-8248 User’s Manual 18

Maintenance

• Passive backplane

• Power supply

• CRT m onitor

• Keyboard translator

• LED board

• Floppy disk drive (FDD)

• Membrane keyboard

• Touchscreen sensor (optional)

CHAPTER

3

19 Chapter 3 Maintenance

Chapter 3 Maintenance

3.1 Passive backplane

Before detaching the backplane, you must slide out the work drawer. Fol­low these steps:

1. Switch off the power, and detach the main power cord.

2. Detach the work drawer from the AWS-8248 unit. (See Fig. 2-1.)

3. Slide the work drawer out as far as it will go. Detach the holding
clamp, cables and all the installed cards.

4. Detach the P8 and P9 power connectors by pulling them down.
Unscrew the seven screws and detach the backplane.Our worksta­tions are equipped with programmable function keys (macro keys)
that greatly enhance the operator interface. Macros, which are far
more powerful than batch files, automate the most commonly used
input sequences. They extended their functional reach to within
application programs.(See Fig. 3-1.)

Figure 3.1: Removing the passive backplane

AWS-8248 User’s Manual 20

3.2 Power supply

The power supply provides 250 watts and meets UL, CSA and TUV stan­dards. To repair it, you must slide out the work drawer.

1. Switch off the power, and detach the main power cord.

2. Detach the work drawer from the AWS-8248 unit.
(See Fig. 2-1.)

3. Slide the work drawer out as far as it will go.

4. Detach the P8 and P9 power connectors by pulling them down.

5. Remove the four screws at the rear of the work drawer. Pull down
the power supply assembly using the handle.
(See Fig. 3-2.)

6. Remove the four screws at the rear of the power supply holding
plate.

7. Detach the power supply and replace it.

Figure 3.2: Removing the power supply

21 Chapter 3 Maintenance

3.3 LCD display module

1. Switch off the power, and detach all the cables.

2. Detach and slide out the work drawer. (Refer Fig. 2-1.)

3. Unscrew and detach the upper and back cover. ( Refer Fig. 3-3)

4. Unscrew and detach the keyboard translator board. ( Refer Fig. 3-3)

5. Unscrew the 4 screws which hold the LCD display module.(Refer
Figs. 3-4.)

Figure 3.3: Removing LCD display module (first steps)

AWS-8248 User’s Manual 22

Figure 3.4: Removing LCD display module (final steps)

23 Chapter 3 Maintenance

3.4 Keyboard translator

The keyboard translator is an interface between a standard PC keyboard
layout and a specific keypad layout. The output side is connected to the
keyboard connector of the CPU card. The input side is connected to three
flat cables leading to the membrane keypad and two 5-pin external key­board jacks.

Figure 3.5: Keyboard translator input/output (actual)

AWS-8248 User’s Manual 24

Figure 3.6: Keyboard translator input/output (schematic)

25 Chapter 3 Maintenance

To service the keyboard translator:

1. Switch off the power, and detach the main power cord.

2. Detach the work drawer and cover from the AWS-8248 unit. (See
Fig. 2-1.)

3. Slide the work drawer out as far as it will go.

4. Detach all cables connected to the keyboard translator. These
include cables to the keyboards, the cable to the CPU card, and the
cable to the function keypad.

5. Detach the cables which connect the keyboard translator to the
operating keypad. You should also detach these cables from the
operating keypad. To do so, remove the membrane keypad connec­tor protective bracket, and carefully pull off the two membrane
keypad cables.

6. Unscrew the three screws, pull out the keyboard translator, and
replace it.

Figure 3.7: Removing the keyboard translator

AWS-8248 User’s Manual 26

3.5 LED board

Before replacing the LED board, you must slide out the work drawer. Fol­low these steps:

1. Switch off the power, and detach the main power cord.

2. Detach the work drawer from the AWS-8248 unit.
(See Fig. 2-1).

3. Slide the work drawer out as far as it will go.

4. Pull off the LED cable.

5. Unscrew the two screws, and replace the LED board. (See Fig. 3-

8.)

Figure 3.8: Removing the LED board

27 Chapter 3 Maintenance

3.6 Floppy disc drive (FDD)

Before replacing the FDD, you must slide out the work drawer. Follow
these steps:

1. Switch off the power, and detach the main power cord.

2. Detach the work drawer from the AWS-8248 unit. (See Fig. 2-1.)

3. Slide the work drawer out as far as it will go.

4. Pull off the flat cable and the power cable.

5. Unscrew the four screws on the outside of the side panel of the
AWS-8248 unit, and remove the FDD. (See Fig. 3-9.)

Figure 3.9: Removing the FDD

AWS-8248 User’s Manual 28

3.7 Membrane keypad

This eventually wears out after exhaustive and prolonged use. The metal
dome switches lose their elasticity, the contact surfaces wear down, and
chemical corrosion sets in. The membrane keypad film can become torn.
If more than, say, three metal domes are broken, this may indicate that the
keypad tail series is broken, or that the single cable connecting the keypad
tail is defective.

Replacing the membrane keypad is now easier than before. You must,
however, slide out the work drawer.

To replace the operating membrane keypad:

1. Switch off the power, and detach the main power cord.

2. Detach the work drawer and cover from the AWS-8248 unit. (See
Fig. 2-1.)

3. Slide the work drawer out as far as it will go.

4. Remove the membrane keypad connector protective bracket, and
carefully pull off the two membrane keypad cables.
(See Fig. 3-10.)

5. Tear the operating membrane keypad from the aluminium panel,
and replace it.

To replace the function membrane keypad:

1. Tear the function membrane keypad from the aluminium panel
directly.

2. Carefully pull off the membrane keypad cables connecting the key­pad tail. (See Fig. 3-10.)

3. Remove the function membrane keypad, and replace it.

29 Chapter 3 Maintenance

Figure 3.10: Replacing the membrane keypad

AWS-8248 User’s Manual 30

3.8 Touchscreen sensor (-T models)

The touchscreen sensor may eventually wear out after exhaustive and
prolonged use. Before you replace it, you must slide out the work drawer.

1. Switch off the power, and detach the main power cord.

2. Detach the work drawer and cover from the AWS-8248 unit. (See
Fig. 2-1.)

3. Slide the work drawer out as far as it will go.

4. Remove the operating membrane keypad connector protective
bracket, and carefully pull off the two operating membrane keypad
cables.

5. Detach the external keyboard cable from the keyboard translator.

6. Detach the four waterproof sponges.

7. Unscrew the 12 screws around the perimeter of the front panel
which hold the panel to the main chassis.

8. Separate the front panel from the chassis, the touchscreen cable
from the touchscreen sensor, and the function keypad cable from
the function keypad. (See Fig. 3-11.)

9. Detach the four shock-absorbing sponges, and detach the touch­screen sensor. Remove any residual adhesive from the aluminium
panel.

10. Apply new adhesive, and attach the touchscreen sensor to the alu­minium panel. Make sure that the sensor is oriented correctly.

31 Chapter 3 Maintenance

Figure 3.11: Replacing the touchscreen sensor

AWS-8248 User’s Manual 32

CHAPTER

4

Macro Key Program­ming

• Introduction

• Macro key overview

•Syntax

• Using SFED8248.COM

•Examples

33 Chapter 4 Macro Key Programming

Chapter 4 Macro Key Programming

4.1 Introduction

Our workstations are equipped with programmable function keys (macro
keys) that greatly enhance the operator interface. Macros, which are far
more powerful than batch files, automate the most commonly used input
sequences. They extended their functional reach to within application
programs.

4.2 Macro Key Review

The complete macro function consists of the following elements:

Macro keys (SF1 , SF2, ... SF10)

Ten programmable macro keys that are located on the dust-proof door on
the front panel of your workstation.

Macro EEPROM

Holds the key sequences that are activated when the corresponding macro
key is pushed.

Macro programming utility

In the sub-directory, AWS-8259&8124&8248/KBT-utility, of the HMI
utility CD-ROM, you will find a program called SFED8248.COM.. The
SFED8248 program provides an edit function to produce an ASCII file
that contains key stroke sequences for every macro key. After you have
finished editing the file, the program will ask you whether you want to
save the macro script and/or transmit it to the EEPROM. Macros consist
of keystroke sequences to automate the most common procedures in your
application. The way they function is much like batch files (.BAT) under
DOS, but there are some differences. In a Macro, you have to specify the
ENTER key explicitly. Also, macros give you the option of entering key
sequences in an application that was executed by the macro itself.

AWS-8248 User’s Manual 34

4.3 Syntax

Macro definitions consist of ASCII characters or character codes for spe­cial characters (ALT, ENTER, SHIFT, F1, SF2, and so on). These codes
are predefined, and SFED8248.COM will display them on the screen for
you. They are easily recognizable,

appearing between the square brackets, "[" and "]".
For example:

ALT is represented by [26]
ENTER is represented by [33]

In your macro script, you can enter ordinary text (ASCII characters) or
the code(s) of the required special character(s).

For example:

CD\TOOLKIT[33] means CD\TOOLKIT [ENTER]

For combination keystrokes (ALT/SHIFT/CTRL + another key) enter the
codes of the special characters, followed by [90]

(RELEASE).

35 Chapter 4 Macro Key Programming

For example:

ALT-F1 is represented by [26][44][90]
CRTL-C is represented by [28]C[90]
SHIFT-B is represented by [27]B[90]
ALT-X is represented by [26]X[90] or [26]x[90]
ALT-F1 is represented by [26][44][90]
SHIFT-X is represented by [27]X[90]
SHIFT-F1 is represented by [27][44][90]
CTRL-X is represented by [28]X[90]
CTRL-F is represented by [28][44][90]
CTRL-ALT-DEL is represented by [28][26][41][90] (reboot)
CTRL-ALT-A is represented by [28][26]A[90]
CTRL-SHIFT-1 is represented by [28][27]1[90]

Another useful function is the DELAY instruction. You can instruct the
macro program to wait before executing the next keystroke.
SFED8248.COM displays the codes that you can use for various delays.

For example:

[86] - wait for 10 seconds before executing next keystroke
[88] - wait for 1 minute before executing next keystroke
[26]A[90][86][26]B[90] means ALT-A, wait 10 seconds, ALT-B

AWS-8248 User’s Manual 36

4.4 How to use SFED8248.COM

Advantech Workstation Special Function Key Edit Program Rev. 11/16/1995
Table of Control Codes : Example : SF5 =CD\WINDOWS[33]WIN[33]

3 Sec [84]
1 Hour [89]

HOME [3C]
END [3D]
PGUP [3E]
PGDN [3F]
INS [40]
DEL [41]
SF1 to SF10 = [70] to [79]

ESC [36]

→→→→

[3B]
F4 [47]
F8 [4B]
F12 [4F]

[ [30]

↑↑↑↑

[38]
F1 [44]
F5 [48]
F9 [4C]
RELEASE [90]

] [31]

↓↓↓↓

[39]
F2 [45]
F6 [49]
F10 [4D]

BS [35]

←←←←

[3A]
F3 [46]
F7 [4A]
F11 [4E]

Key delay Mode :

TAB [24]
ALT [26]
SHIFT [27]
CTRL [28]
ENTER[33]
PRTSC[7E]
PAUSE[7F]

0.1 Sec [80]
5 Sec [85]

0.5 Sec [81]
10 Sec [86]

1 Sec [82]
30 Sec [87]

2 Sec [83]
1 Min [88]

SF1 =
SF2 =
SF3 =
SF4 =
SF5 =
SF6 =
SF7 =
SF8 =
SF9 =
SF10 =

KBT ID:AD111695

ESC:Quit/Save/Transmit

First, boot your system under pure DOS mode (not DOS shell in win­dows) and copy all the files to your hard disk and/or make a backup disk.
Then start the macro editor. You will have to specify either an existing
macro script file or a new macro script file. Here we will create a new file
by typing SFED8248 NEWKEY.TXT [ENTER].

The following screen will appear:

When you have finished editing, press the ESC key. At the bottom line of
the screen you will be prompted to choose if you want to save the file
and/or if you want to transmit it to the EEPROM.

After confirmation with the Enter key, the tasks are carried out and you
return to DOS.

Figure 4.1: The Macro Editor screen

37 Chapter 4 Macro Key Programming

4.5 Example

Ad

Edit P

11/16/199

We will explain all macro functions that you can find in the EXAM­PLE.TXT We will explain all macro functions that you can find in the
EXAMPLE.TXT macro script file. When typing SFED8248 EXAM­PLE.TXT the following editor screen will appear:

vantech Workstation Special Function Key

Table of Control Codes : Example : SF5 =CD\WINDOWS[33]WIN[33]

TAB [24]
ALT [26]
SHIFT [27]
CTRL [28]
ENTER[33]
PRTSC[7E]
PAU SE [7F ]

Key delay Mode :

0.1 Sec [80]
5 Sec [85]

SF1 =

CD\TOOL[33]SFED825 EXAMPLE.TXT[33]
COPY C:\CONFIG.EMM C:\CONFIG.SYS[33]Y[33][85][79]

SF2 =
SF3 =

C:\WP51\WP[33][86][27][4D][90]REPORT.WP5[33]

SF4 =
SF5 =
SF6 =
SF7 =
SF8 =
SF9 =

[28][26][41][90]

SF10 =

Save(Y/N)? Transmit(Y/N)?

HOME [3C]
END [3D]
PGUP [3E]
PGDN [3F]
INS [40]
DEL [41]
SF1 to SF10 = [70] to [79]

0.5 Sec [81]
10 Sec [86]

rogram Rev.

[30]

[

[38]

↑

F1 [44]
F5 [48]
F9 [4C]
RELEASE [90]

1 Sec [82]
30 Sec [87]

KBT ID:AD111695

[31]

]

[39]

↓

F2 [45]
F6 [49]
F10 [4D]

2 Sec [83]
1 Min [88]

5

BS [35]

[3A]

←

F3 [46]
F7 [4A]
F11 [4E]

ESC:Quit/Save/Transmit

3Sec [84]
1 Hour [89]

ESC[36]

[3B]

→

F4 [47]
F8 [4B]
F12 [4F]

Figure 4.2: Macro examples

AWS-8248 User’s Manual 38

SF1 = CD\TOOL[33] SFED825 EXAMPLE.TXT[33]

This macro changes to the TOOL directory, then starts up
SFED8248.COM with EXAMPLE.TXT.

SF2 = COPY C:\CONFIG.EMM C:\CONFlG.SYS [33] Y [33] [85]
[79]

The configuration information is changed by copying CONFIG.EMM to
CONFIG.SYS. After a delay of 5 seconds, [85], the macro invokes macro
function key SF10, [79], which was defined to reset the system.

SF4 = C:\WP51\WP[33][86][27][4D][90]REPORT.WP5[33]

This example shows that after a macro executes, it is able to direct the
program to accomplish several tasks. WordPerfect is started. After a delay
of 10 seconds (time to load the program), the

command Shift-F10, [27][4D], is issued to import a text file. The name of
the text file (REPORT.WP5) is inserted; and finally ENTER, [33], causes
the text file to be loaded and displayed on the screen.

SF10 = [28][26][41][90]

Restarts the computer (CTRL-ALT-DEL).

39 Chapter 4 Macro Key Programming

AWS-8248 User’s Manual 40

Appendix

A

Display Timing Mode &
OSD

• Supported input timing modes

• OSD operation keypad

• OSD function and operation

41 Appx. A

Appendix A Display Timing Mode and OSD

A.1 Supported Input Timing Modes

The nineteen kinds of timings below are already programmed in this
module. The input synchronous signals are automatically recognized.

Vertical Frequencies

Resolution

640x480

800x600

1024x768

Note 1: Even if the preset timing is entered, a little adjust-

56Hz 60Hz 70Hz 72Hz 75Hz

Yes

Yes Yes

Yes Yes Yes Yes

Yes Yes Yes

Table A.1: Supported Input Formats

ment of the functions such as Horizontal period,
CLK-delay and display position, are required. The
adjusted values are memorized in every preset num­ber.

Note 2: This module recognizes the synchronous signals

with near preset timing of the frequency of the HS
and Vsync, even in the case that the signals other
than the preset timing that were entered.

Note 3: Because adjustments may not fit, such as differing

magnifying ratios or, in the case that you use it
except for the display timing that was preset.

AWS-8248 User’s Manual 42

A.2 OSD Operation Keypad

The OSD keypad, including six keys and a two color indicator, is
designed as the OSD operation interface.

The six keypad functions are in Table A-2.

Auto

Sel

WX

WX

WXWX

Exit

On/OFF

Press this button to execute auto adjustment process

Press to show the OSD screen or select an item to
change its setting

To move between items or increase or decrease setting

To exit from the current setting in OSD function

Turns display backlight ON and OFF

Table A.2: Keypad functions

Note: The green light means that the COMMON board detects the input
signal and ends output signal to LCD panel.

43 Appx. A

A.3 OSD function and operation

Auto-adjustment process or to adjust manually:

1. Press [Sel] button to display the OSD Menu shown below.

WWWW

XXXX

or

2. Press

3. Press [Sel] button to select the menu option.

4. Press

5. Press [Exit] button or wait until time out to save changes and exit
the menu or sub-menu.

button to scroll to the desired menu option.

WWWW

XXXX

or

button to adjust the setting.

Figure A.1: OSD menu

Table A-3 is the OSD menu hierarchy and function description.

Main Menu Sub Menu Sub Menu Functionality

Brightness Reset Brightness Adjust display brightness

Contrast

Infor matio n Display input mod e info rmation

All Res et Rese t all p ara mete rs t o fact ory d efault s ett ing

Contrast Reset Contrast Adjust RGB contrast simultaneously
R Sub Contrast Reset R Contrast Adjust R contrast
G Sub Contrast Reset G Contrast Adjust G contrast
B Sub Contrast Reset B Contrast Adjust B contrast
H. Size Reset H. Size Adjust clock number per line
Clock Phase Reset Clock Phase Adjust phase of ADC sample clock

Position

H. Position Reset H. Position Adjust display image left or right
V. Position Reset V. Position Adjust display image up or down

Table A.3: OSD Functionality

AWS-8248 User’s Manual 44

Appendix

B

Power Supply Specifi­cation

• 250 watt power supply

•-48 V

• 24 V

power supply

DC

power supply

DC

45 Appx. B

Appendix B Power Supply Specifications

B.1 Supported Input Timing Modes

The AWS-8248 off-line switching power supply is ideal for use in work­stations. It has been designed to meet UL, CSA and TUV safety stan­dards. It has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference
when the equipment is operated in a commercial environment.

Specifications
Input

• Input range: 90~135/180~265 V

• Input frequency:47 ~ 63 Hz

• Input current: 6 A @ 115 V

• Efficiency: >65% @ full load, nominal line

• EMI/RFI: FCC Part 15 Class B; VDE 243 Calss B & CISPR 22

Class B

Output load range:

Output Voltage Regulations Minimum load Maximum load Peak load Ripple & Noise
V1 +3.3 V +/-5 % 0 A 14 A - 50 mV
V2 +5 V +/-5 % 1 A 25 A - 50 mV
V3 +12 V +/-5 % 0.2 A 8 A 16 A 120 mV
V4 -12 V +/-10 % 0 A 0.8 A - 120 mV
V5 -5 V +/-5 % 0 A 0.5 A - 100 mV
V6 +5 VSB +/-5 % 0 A 1 A - 50 mV

AC

; 3 A @ 230 V

AC

AC

1. Maximum continuous DC output power shall not exceed 250 W

2. +3.3 V and +5 V total O/P power should not exceed 145 W

3. -12 V and -5 V max. total combined current is 0.8 A

4. M.T.B.F: 100K hours min. at max. load and 25° C ambient
conditions

AWS-8248 User’s Manual 46

B.2 -48 V DC power supply

The following specifications describe the physical and electrical charac­teristics of a 310 W, four output, DC to DC switching power supply
housed in a standard size PS/2 casing.

Specifications
Input voltage: -38 ~ -58 VDC (continuous operation)

-48 VDC (normal operation)

Input current: 10 A max. @ -48 V

Inrush current: 5 A max. @ -48 V

Efficiency: 70% min. @ full load and normal line voltage

DC

DC

input

input

47 Appx. B

Output characteristics:

Total regulation

tolerance

Output
voltage

+5 V

DC

+12 V

-5 V

DC

-12 V

DC

Min. Max. Surge Max. Min. Max.

2 A 25 A 30 A +3% -3%

DC

0 A 10 A 12 A +3% -3%

0.0 A 1.0 A - +5% -5%

0.0 A 5 A - +3% -3%

Table B.1: -48 V

Loading current

power supply output characteristics

DC

Note 1: Total regulation tolerance includes temperature

change, warmup drift and dynamic load.

Note 2: Ripple and noise were measured differentially at

the power supply using loads that were each
shunted by at least a 0.1 m F ceramic disc
capacitor and a 10 m F electrolytic capacitor, each
capacitor having a bandwidth up to 20 MHz.

Overshoot (resistive load):

Any output overshoot when the power is turned on does not exceed
10% of the nominal output voltage.
Output power: Maximum continuous: 310 W

Noise

plus

ripple

50 mV

p-p

120 mV

p-p

50 mV

p-p

120 mV

p-p

AWS-8248 User’s Manual 48

Power good and power fail signals (optional):

When the power is turned on, the power good signal will activate 100 to
500 ms after all output DC voltages are operating within their respective
regulation limits.

The power fail signal will activate at least 1 ms before the +5 V output
voltage falls below its regulation limit.

Short circuit protection:

A short circuit placed on any output to ground is shut down. When the
short circuit conditions have ceased to exist, power will then be recycled
to restart the power supply.

Over-current protection:

The power supply will shut down all the DC outputs when any output is
overloaded beyond its current limit or beyond its nominal line voltage
limit. When the over-current conditions have ceased to exist, power will
then be recycled to restart the power supply.

Current limit ranges: 5 V: 32 ~ 45 A

12 V: 13 ~ 20 A

-12 V: 6 ~ 12 A

-5 V: 1.5 ~ 3 A

Over-voltage protection:

The power supply will shut down all the DC outputs when any output
maximum voltage limit is exceeded. When the over-voltage conditions
have ceased to exist, power will then be recycled to restart the power sup­ply.

Voltage limit ranges: 5 V: 6.25 ±0.75 V

12 V: 14 ±1 V

-5 V: -6.25 ±0.75 V

-12 V: -14 ±1 V

49 Appx. B

Reset time:

When the power supply has automatically shut down, and the short cir­cuit, over-current and/or over-voltage conditions have ceased to exist,
power will be automatically recycled to restart the power supply within 3
seconds of such return to normal conditions.

No load start:

When the power supply is switched on but with no load connected, the
power supply does not get damaged, and it is still completely safe for
users.

Transient response:

Dynamic load change: ±50% of maximum rating load
Recovery time: 500 µs max.

Reliability:

Mean time between failures (MTBF):100,000 hours minimum

Operating temperature: 0 ~ 50° C
Storage temperature: -40 ~ 60° C
Operating and storage humidity:10 ~ 95% RH
Operating altitude: sea level ~ 15,000 ft
Storage altitude: sea level ~ 50,000 ft

International Standards Compliance
Safety: UL 1950

CSA 22.2 No. 234
TUV EN 60950

EMI: FCC Part 15 Subpart J Class B

AWS-8248 User’s Manual 50

DC Output wire list

All DC output cables use UL 1007 type wires.

Wire

Connector Output Color

P8-1

P8-2

P8-3

P8-4

P8-5 COM Black 18

P8-6

P9-1

P9-2 COM Black 18

P9-3

P9-4

P9-5

P9-6

PE-1

PE-2

PE-3

PE-4

PF-1

PF-2

PF-3

PF-4

PA-1

PA-2

PA-3

PA-4

PB-1

PB-2

PB-3

PB-4

PG Orange 18

+5 V Red 18

+12 V Yellow 18

-12 V Blue 18

COM Black 18

COM Black 18

-5 V White 18

+5 V Red 18

+5 V Red 18

+5 V Red 18

+12 V Yellow 18

COM Black 18

COM Black 18

+5 V Red 18

+5 V Red 20

COM Black 20

COM Black 20

+12 V Yellow 20

+12 V Yellow 18

COM Black 18

COM Black 18

+5 V Red 18

+12 V Yellow 18

COM Black 18

COM Black 18

+5 V Red 18

#AWG

Length

(mm)

300

+30/-10

300

+30/-10

300

+30/-10

150

+30/-10

300

+30/-10

150

+30/-10

Housing Terminal

BURNDY

GTC 6P-1

or

equivalent

BURNDY

GTC 6P-1

or

equivalent

AMP

480424-0

or

equivalent

AMP

171822-4

or

equivalent

AMP

480424-0

or

equivalent

AMP

480424-0

or

equivalent

BURNDY

DCK 18-2TR9

or equivalent

BURNDY

DCK 18-2TR9

or equivalent

AMP

61314

or equivalent

AMP

170262-1 or

equivalent

AMP

61314

or equivalent

AMP

61314

or equivalent

Table B.2: -48 V

power supply DC output wire list

DC

51 Appx. B

B.3 24 VDC power supply

This is a DC to DC switching mode power supply with a 24 VDC input.

Input voltage:+19 ~ +32 V
Input current:16 A max. @ +24 V
Inrush current:10 A max. @ +24 V

(normal operation)

DC

input

DC

input

DC

Output load range:

Table B.3: 24 VDC power supply output load range

Output No OutputMin. load Rated load Peak load Voltage accuracy

1 +5 V 1.0 A 25 A 30 A 4.90 ~ 5.10 V
2 +12 V 0 A 10 A 12 A 11.28 ~ 12.72 V
3 -12 V 0 A 1 A 2 A -11.40 ~ -12.60V
4 -5 V 0 A 1 A 2 A -4.75 ~ -5.25 V

At the factory, the +5 V output was set between 5.00 and 5.10 V, while
other outputs were simultaneously set at 60% of their respective rated
loads.

The -5 V and -12 V outputs can be used at their respective rated loads.
The +5 V output should carry a load of at least 4 A.

Output power:

Total DC continuous power does not exceed 250 W. Each output should
be able to operate continuously under its maximum load.

Ripple and noise:

Peak to peak ripple and noise for each output is less than 1% of
each output’s respective voltage. Measurements were performed
with a 15 MHz bandwidth limited oscilloscope, and each output
was terminated with a 0.47 µF capacitor.

V

AWS-8248 User’s Manual 52

Line regulation:

The output line regulation for each output is less than ±1%, when mea­sured at each output’s respective rated load and under ±10% changing
input voltage conditions.

Load regulation:

The values for each of the following output numbers were obtained by
changing each output load ±40% from the 60% rated load, whilst simulta­neously keeping all other outputs at 60% of their respective rated loads.

Table B.4: 24 VDC power supply load regulation

Output No OutputMin. load Rated load Peak load Voltage accuracy

1 +5 V 1.0 A 25 A 30 A 4.90 ~ 5.10 V
2 +12 V 0 A 10 A 12 A 11.28 ~ 12.72 V
3 -12 V 0 A 1 A 2 A -11.40 ~ -12.60V
4 -5 V 0 A 1 A 2 A -4.75 ~ -5.25 V

Power good signal:

When the power is turned on, the power good signal will activate 100 to
500 ms after all output DC voltages are operating within their respective
regulation limits.

Power fail signal:

This will activate at least 0.5 ms before any of the output voltages fall
below their respective regulation limits.

53 Appx. B

General features

Efficiency:

65% typical when measured at nominal input and rated load.

Input protection:

Protection against wrong polarity if the +24 V input voltage is mistakenly
reversed.

Output protection:

If for some reason the power supply fails to control itself, the built-in
over-voltage protection circuit will shut down the outputs to prevent dam­age to external circuits. The trip point of the

crowbar circuit is approximately 5.7 ~ 7.0 V. The power supply will go
into hiccup mode under short circuit or overload

conditions, and will recover automatically when such conditions cease to
exist.

Environmental specifications
Operating temperature: 0 ~ 45° C
Storage temperature: -40 ~ 75° C

International standards compliance

Safety: UL 1950 D3

CSA 234
TUV EN 60950

AWS-8248 User’s Manual 54

Appendix

C

Touchscreen (optional)

• Installation of touchscreen driver

55 Appx. C

Appendix C Optional Touchscreen

C.1 Specifications

Electrical

Operating Voltage: 3.3 to 5 VDC typical
Sheet Resistance: 220 ± 30% W/square
Linearity: +/- 1.5% full scale linearity error in either

direction.

Insulation Resistance: > 20

Optical

Total light Transmission: 68% typical (> 66% @ 550 nm test)

Environmental

Operating Temperature Range: -20°C to +50°C, ambient humidity
Storage Temperature High: +70°C, 500 hours at ambient humidity
Storage Temperature Low: -40°C, continuous at ambient humidity
Accelerated Aging: 100 hours continuous exposure at

Mechanical

Activation Method: Gloved or ungloved finger

Activation Force: < 70g average with non-metal stylus

ΜΩ

@ 25 VDC.

60°C/95% RH
Thermal Shock: 25 cycles (one cycle is

30 min. dwell alternating from -40°C
to +85°C with less than 10 min. trans
fer time).

Delrin or plastic stylus (no metal) with
1mm radius full hemispherical tip

< 90g average with 5/8” diameter sili
cone finger

AWS-8248 User’s Manual 56

Durability

Point Activation Life: 1 Million activations on a single point

with a 5/8” diameter silicone finger
with a 350g load at 2 Hz

Character Activation Life: >100,000 characters written within a

20mm x 20mm

C.2 Installation of Touchscreen Driver

The touchscreen for the AWS-8248 Series provides drivers for use with
MS-DOS, Windows 3.1, 95, 98, NT, and 2000. For the detailed touch­screen driver installation procedure, please refer to the “TSCB-9516
Driver Installation Guide” in the accessory box.

57 Appx. C

AWS-8248 User’s Manual 58