SeaLevel DataShark Manuale utente

DataShark

User Manual | 3188

Contents

CONTENTS...........................................................................................................................................................2

INTRODUCTION ................................................................................................................................................... 3

BEFORE YOU GET STARTED ...............................................................................................................................4

CARD SETUP ........................................................................................................................................................5

INSTALLATION .................................................................................................................................................... 9

TECHNICAL DESCRIPTION ...............................................................................................................................11

SPECIFICATIONS ...............................................................................................................................................12

APPENDIX A – TROUBLESHOOTING................................................................................................................13

APPENDIX B – HOW TO GET ASSISTANCE .....................................................................................................14

APPENDIX C – ELECTRICAL INTERFACE ........................................................................................................15

APPENDIX D - ASYNCHRONOUS COMMUNICATIONS....................................................................................16

APPENDIX E – SILK SCREEN ............................................................................................................................17

APPENDIX F – COMPLIANCE NOTICES...........................................................................................................18

WARRANTY ........................................................................................................................................................19

Introduction

Overview

The Sealevel Systems DataShark provides the PC with 2 Asynchronous serial ports. The DataShark also

provides a jumper to select clocking modes that allow much higher data rates than those typically

associated with RS-232. These data rates are accomplished by using high-speed drivers and receivers

designed to handle these higher rates, up to a maximum 460Kbps. The DataShark can be configured as

COM1: through COM4:, providing a versatile interface for common RS-232 needs (i.e. modem, mouse and

plotters) as well as higher speed applications ( i.e. ISDN, V.34 modems etc.).

Factory Default Settings

TheDataShark factory default settings are as follows:

Port #

Base Address

IRQ

Port 1

280

Port 2

288

To install the DataShark using factory default settings, refer to Installation on page 6.

For your reference, record installed DataShark settings below:

Port #

Base Address

IRQ

Electrical Specification

Before You Get Started

What’s Included

The DataShark is shipped with the following items. If any of these items are missing or damaged, contact

the supplier.

•DataShark Serial I/O Adapter

Advisory Conventions

Warning

The highest level of importance used to stress a condition where damage could result to the

product, or the user could suffer serious injury.

Important

The middle level of importance used to highlight information that might not seem obvious or a

situation that could cause the product to fail.

Note

The lowest level of importance used to provide background information, additional tips, or other

non-critical facts that will not affect the use of the product.

Card Setup

The DataShark contains several jumper straps, which must be set for proper operation.

Address Selection

Each serial port on the DataShark occupies eight consecutive I/O locations and looks to the PC as a

standard serial port. A DIP switch (SW1) is used to set the port address options for the DataShark. Be

careful when selecting the port addresses as some selections may conflict with existing ports. The

following table shows the addressing options available with the standard PAL. If you do not see an address

option that suits your needs, please contact Sealevel Systems Technical Support about a custom PAL

option.

Port1 J2

Port2 J3

SW1

3F8

2F8

Off

3E8

2E8

Off

2F8

2E8

Off

2F8

3E8

Off

3220

3228

Off

4220

4228

Off

5220

5228

Off

5220

4220

Off

280

290

Off

300

308

Off

310

318

Off

280

288

Off

290

298

Off

300

280

Off

Disabled

Off

Figure 1 - Address Selection Table

Each COM: port in your system should have a unique address. Typically COM1: - COM4: addresses

are 3F8, 2F8, 3E8 & 2E8 Hex. If a COM1: & COM2: are already present, use the second addressing

option, this will provide the typical addresses for COM3: & COM4:.

Refer to Appendix A for common address contentions.

Port Enable / Disable

Port 2 on the DataShark can be enabled or disabled with the jumper at E6 for applications requiring only

one port. The port is enabled with the jumper installed and disabled when removed. If Port 2 is disabled, be

sure to disable the interrupt request for that port by removing the IRQ jumper at E2. When the port is

disabled only the Port 1 address from the selection is valid (See Figure 1).

IRQ Selection

Headers E1 and E2 select the interrupt request for each serial port (E1 - Port 1, E2 - Port 2). If COM1: is

selected, the corresponding jumper must be on the IRQ4 setting. If COM2: is selected, the corresponding

jumper must be on IRQ3.

Most communications software applications default COM3: to IRQ4 and COM4: to IRQ3. This requires

the sharing of interrupts between COM1: and COM3:, and between COM2: and COM4:. While this is

the default, it is not always the preferred setting. Check your software configuration instructions to

determine the most appropriate IRQ selection.

Figure 2 - Header E1 and E2, IRQ Selection

Any two or more ports can share a common IRQ by placing the jumpers on the same IRQ setting and setting

the appropriate selections at E3. Consult your particular software for IRQ selection. If no interrupt is desired,

remove the jumper.

Interrupt Modes

Header E3 selects the interrupt mode for each port. Each port must be set in the correct mode to insure

proper installation.

‘N’ indicates the (N)ormal, single interrupt per port mode. ‘S’ Indicates the (S)hared interrupt mode, which

allows more than one port to access a single IRQ. Any two or more ports can share a common IRQ by

placing the jumpers on the same IRQ setting and setting the appropriate selections at E1. Consult your

particular software for IRQ selection. If no interrupt is desired, remove the jumper. ‘R’ indicates the inclusion

of a 1K ohm pull-down resistor required on one port when sharing interrupts.

N SR

E3 2

Figure 3 - Header E3, Normal IRQ Mode

Set the jumpers to ‘S’ for shared interrupt mode on all blocks sharing an IRQ except one. Set that port block

for ‘S’ and ‘R’. This provides the pull-down resistor circuit that makes sharing of IRQs possible. If you are

using more than one DataShark or a compatible adapter in a bus, you should only have one port set to ‘R’.

The following example shows both ports sharing a single IRQ.

N S R

E3 2

Figure 4 - Header E3, Shared IRQ Mode

Set the jumper to ‘S’ if you are using more than one DataShark in a bus or you wish to completely remove

the pull-down resistor for hardware compatibility. Setting the adapter in this configuration when it is not

accompanied by a pull-down resistor will prevent the ports from triggering an interrupt.

N S R

E3 2

Figure 5 - Header E3, Sharing IRQ’s with another adapter

Clock Modes

The DataShark employs a unique clocking option that allows the end user to select from divide by 4, divide

by 2 and divide by 1 clocking modes. These modes are selected at Headers E4 and E5. To select the Baud

rates commonly associated with RS-232 (i.e. 2400, 4800, 9600, 19.2, … 115.2K Bps ) place the jumper in

the divide by 4 mode. To double these rates up to a maximum rate for 230.4K bps place the jumper in the

divide by 2 position. To select the maximum data rate (460.8K bps) place the jumper in the divide by 1

position. In the example below, Port 1 (E4) is selected for the divide by 4 rate to support a common RS-232

application (i.e. serial mouse) and Port 2 (E5) is selected to support a high speed application in the divide

by 1 mode (i.e. ISDN or digital link).

Figure 6 - Headers E4 and E5, Clocking Modes

Installation

Do not install the hardware until the software has been fully installed.

The DataShark can be installed in any PC expansion slots, but to access the ‘AT’ or (E)ISA IRQs (10, 11, 12,

15) it must be installed in one of the 16 bit slots. The DataShark contains several jumper straps for each

port which must be set for proper operation prior to installing the adapter into the computer.

1. Turn off PC power. Disconnect the power cord.

2. Remove the PC case cover.

3. Locate an available slot and remove the blank metal slot cover.

4. Gently insert the COMM+2 into the slot. Make sure that the adapter is seated properly.

5. Replace the screw.

6. Replace the cover.

7. Connect the power cord.

Installation is complete.

Operating System Installation

For Windows Users

Only users running Windows 7 or newer should utilize these instructions for accessing and

installing the appropriate driver via Sealevel’s website. If you are utilizing an operating system

prior to Windows 7, please contact Sealevel by calling 864.843.4343 or emailing

[email protected] to receive access to the proper driver download and installation

instructions.

1. Begin by locating, selecting, and installing the correct software: SeaCOM Asynchronous

Serial Software.

2. Select “Download Now” for SeaCOM for Windows.

3. The setup files will automatically detect the operating environment and install the proper

components. Follow the information presented on the screens that follow.

4. A screen may appear with text similar to: “The publisher cannot be determined due to the

problems below: Authenticode signature not found.” Please click the ‘Yes’ button and

proceed with the installation. This declaration simply means that the operating system is

not aware of the driver being loaded. It will not cause any harm to your system.

5. During setup, the user may specify installation directories and other preferred

configurations. This program also adds entries to the system registry that are necessary

for specifying the operating parameters for each driver. An uninstall option is also included

to remove all registry/INI file entries from the system.

To avoid accidental damage, be sure to follow the proper ESD procedures by grounding yourself

and the board.

Other Operating Systems

Refer to the appropriate section of the Serial Utilities Software.

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