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Summary of Contents for CommTech Fastcom G422/4-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 ® Fastcom : G422/X-PCIe...
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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 ....................8 PCI P ............... 8 ESTING THE ASTCOM SYNC ORT IN INDOWS FASTCOM SERIALFC SETTINGS .................. -
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: G422/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: G422/X-PCIe Card G422/X-PCIe Cable Assembly Fastcom CD If an omission has been made, please call customer service at 316-636-1131 for a replacement. ® Fastcom : G422/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: G422/X-PCIe boards. - Page 9 1. Attach the supplied G422/X-PCIe Cable Assembly to the CHAMP 68 connector. Install the loopback plug on the port to test. 2. Open a Command prompt window and change to the directory (C:\> cd directoryname ) where you saved the Fastcom software files that were either copied from the CD or downloaded from our website.
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Page 10: Fastcom Serialfc Settings
FASTCOM SERIALFC SETTINGS Clock Generator Frequency The clock generator frequency divided by the sampling rate will directly determine the maximum available bit rate that you may use with the Fastcom board. It works like this: Windows must be able to divide the clock frequency by the sampling rate and then by any whole number and get to your bit rate as the answer. - Page 11 Tx FIFO Trigger Level The Tx FIFO level generates an interrupt whenever the transmit FIFO level falls below this preset trigger level (low water mark). Raising or lowering this value can help to reduce the number of interrupts generated by the Fastcom port during transmits. This setting affects only the selected port. Modify this value only if necessary in your application or if the transmitter is generating too many interrupts for your CPU to handle.
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Page 12: Fastcom: G422/X-Pcie Adapter Cable
FASTCOM: G422/X-PCIE ADAPTER CABLE We provide access to the individual channels of the FASTCOM: G422/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 13: Db9 Pin Description
DB9 Pin Description The FASTCOM: G422/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 14: Programming
PROGRAMMING To interface with the serial ports on the Fastcom: G422/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 SerialFC Settings... -
Page 15: 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: G422/X-PCIe is not much different from working with a standard RS-232 device. -
Page 16: 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 17: 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 18: 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 19: 17V354 & 17V358 Uart Data Sheet
APPENDIX A 17V354 & 17V358 UART Data Sheet ® Fastcom : G422/X-PCIe...
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