CommTech Fastcom 422/4-PCIe Reference Manual

CommTech Fastcom 422/4-PCIe Reference Manual

Four or eight channel rs-422/485 interface for pci express bus

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Summary of Contents for CommTech Fastcom 422/4-PCIe

  • Page 2 All rights reserved, including those to reproduce this document or parts thereof in any form without permission in writing from Commtech, Inc. FASTCOM and the “Alpha Lemur” are registered trademarks of Commtech, Inc. Microsoft is a registered trademark of Microsoft Corporation.
  • Page 3 REVISION NOTES REVISION PAGE NUMBER CHANGES MADE Document created Revised software installation and features ® Fastcom : 422/X-PCIe...
  • Page 4: Table Of Contents

    TABLE OF CONTENTS INTRODUCTION ........................5 ........................6 PECIFICATIONS ..........................6 EATURES BOARD LAYOUT ........................7 INSTALLATION ......................... 8 ......................8 ARDWARE NSTALLATION ......................8 OFTWARE NSTALLATION TESTING THE INSTALLATION ....................9 PCI P ....E ESTING THE ASTCOM SYNC ORT IN INDOWS RROR...
  • Page 5: Introduction

    INTRODUCTION The Fastcom PCIe bus, asynchronous RS-422/485 adapters utilize the latest technology to live up to today’s requirements for high bandwidth in communication systems. The Fastcom: 422/4-PCIe and 422/8-PCIe (referred to hereafter as Fastcom: 422/X-PCIe) are capable of operating at virtually any baud rate up to an astounding maximum serial data rate of 25 Mbps.
  • Page 6: Specifications

    Specifications UART: Exar 17V354 or Exar 17V358 OS Support: Windows XP through Windows 8, Linux Data Rates: All baud rates up to 25Mbits/second 256 byte Tx FIFO each channel Buffering: 256 byte Rx FIFO each channel Drivers/Receivers: High Speed RS-422 Interface: RS-422 / RS-485 Signals:...
  • Page 7: Board Layout

    BOARD LAYOUT PACKING LIST Fastcom: 422/X-PCIe Card 422/X-PCIe Cable Assembly Fastcom CD If an omission has been made, please call customer service at 316-636-1131 for a replacement. ® Fastcom : 422/X-PCIe...
  • Page 8: Installation

    Important: Static electricity can harm system boards. Perform service at an ESD workstation and follow proper ESD procedures to reduce the risk of damage to components. Commtech, Inc. strongly encourages you to follow proper ESD procedures, which can include wrist straps and smocks, when handling Fastcom: 422/X-PCIe boards.
  • Page 9: Testing The Installation

    TESTING THE INSTALLATION To fully test the installation of your Fastcom: 422/X-PCIe, you will need to build a "loop back plug". Materials needed are a DB9 male plug, solder-cup style, and two short pieces of 20 or 24 AWG stranded wire. This loop back plug can be used to test any RS-422 port.
  • Page 10: Fastcom Serialfc Settings

    FASTCOM SERIAL SETTINGS The 422/X-PCIe includes many Fastcom specific features that can be altered. Here are some of the options:  Custom baud rates  Termination  Echo cancellation  RS485  Trigger levels  Integrations with fixed baud rate programs For a full list of the available features please review our programming guide (README) included with the driver, as we are always adding more.
  • Page 11: Fastcom: 422/X-Pcie Adapter Cable

    FASTCOM: 422/X-PCIe ADAPTER CABLE We provide access to the individual channels of the FASTCOM: 422/X-PCIe through a shielded CHAMP 68-Pin connector and an adapter cable (supplied with the board). The adapter cable consists of a CHAMP 68-pin male plug fanning out to four standard DB9 female receptacles for the 422/4-PCIe and to eight standard DB9 female receptacles for the 422/8-PCIe.
  • Page 12: Db9 Pin Description

    DB9 Pin Description The FASTCOM: 422/X-PCIe features four (or eight) RS-422/485 channels, which are accessed through the four (or eight) DB9 connectors on the cable assembly. The following is a pin description of the DB9 connectors: PIN NO. SIGNAL NAME DIRECTION SIGNAL GROUND (GND) GROUND...
  • Page 13: Programming

    PROGRAMMING To interface with the serial ports on the Fastcom: 422/X-PCIe in a Windows application, your code will use the standard Win32 COM API. Documentation pertaining to how to use the Win32 API is beyond the scope of this document. For more information on using the API, refer to the “Using Communications Resources” in the MSDN. In addition to the Win32 API, you can also use several special Fastcom-specific commands that allow you to accomplish all of the options from the Fastcom Serial Settings...
  • Page 14: Rs422 / Rs485

    RS422 / RS485 Most engineers have worked with RS-232 devices at least once in their career. If you have never worked with an RS-422 or RS-485 device, you will be pleased to know that working with the FASTCOM: 422/X-PCIe is not much different from working with a standard RS-232 device.
  • Page 15: Termination Resistance

    Termination Resistance In both the RS-422 and the RS-485 mode, the receiver end of the cable between two stations must be terminated with a resistor equal to the characteristic impedance of the wire. This is to prevent signal reflections in the wire and to improve noise rejection.
  • Page 16: Rs-485 Mode

    RS-485 Mode RS-485 is often referred to as a multi-drop or two-wire, half duplex network because the drivers (transmitters) and receivers share the same two lines. In fact, up to 32 stations can share the same twisted pair. In order for an RS-485 system to work, only one driver (transmitter) can occupy the network at a time.
  • Page 17: Technical Support

    We can provide a quote for non-warranty repairs upon request. If any Commtech product is damaged such that it cannot be repaired, you can return it to Commtech for replacement under our Non-Repairable Replacement policy, regardless of the cause of damage. Commtech will replace the unit at 60% of the then-current list price.
  • Page 18: 17V354 & 17V358 Uart Data Sheet

    APPENDIX A 17V354 & 17V358 UART Data Sheet ® Fastcom : 422/X-PCIe...

This manual is also suitable for:

Fastcom 422/8-pcie

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