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CyberResearch COMHP 7804 User Manual

Universal pci 8-port rs-232/422/485 serial interface card, 921.6 kbps data rate, 128-byte fifo buffer, with 8 db9m connectors on included cable (for 3.3 or 5v slots)
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®
Serial Communications
COMHP 7804
Universal PCI 8-Port RS-232/422/485
Serial Interface Card, 921.6 kbps Data
Rate, 128-Byte FIFO Buffer, with 8 DB-
9M Connectors on Included Cable (for 3.3
or 5V slots)
USER'S MANUAL
VER. F • 2003
No part of this manual may be reproduced without permission
®
CyberResearch
, Inc.
www.cyberresearch.com
25 Business Park Dr., Branford, CT 06405 USA
203-483-8815 (9am to 5pm EST) FAX: 203-483-9024

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  • Page 1 ® Serial Communications COMHP 7804 Universal PCI 8-Port RS-232/422/485 Serial Interface Card, 921.6 kbps Data Rate, 128-Byte FIFO Buffer, with 8 DB- 9M Connectors on Included Cable (for 3.3 or 5V slots) USER’S MANUAL VER. F • 2003 No part of this manual may be reproduced without permission ®...
  • Page 3 CyberResearch, Inc. In no event will CyberResearch, Inc. be liable for direct, indirect, special, incidental, or consequential damages arising out of the use of or inability to use the product or documentation, even if advised of the possibility of such damages.

  • Page 4: Intentionally Blank

    ® COMHP 7804 CyberResearch Serial Communication Intentionally Blank ©Copyright 2003 CyberResearch, Inc.

  • Page 5: Table Of Contents

    ® CyberResearch Serial Communications COMHP 7804 Contents ........................1 NTRODUCTION .............................. 1 VERVIEW ..........................1 HAT IS NCLUDED ..........................2 ETUP ....................... 2 DDRESS AND SELECTION ............................2 LOCK ODES ....................2 ATES AND SCILLATOR VALUE ....................... 3 LECTRICAL NTERFACE ELECTION ..........................

  • Page 6: Introduction

    RS-485 driver enable. The COMHP 7804 also features Universal Bus (3.3 and 5.0V) operation. What is Included The COMHP 7804 is shipped with the following items. If any of these items is missing or damaged, contact CyberResearch. •...

  • Page 7: Card Setup

    I/O addresses and IRQs. Clock Modes The COMHP 7804 employs a unique clocking option that allows the end user to select from divide by 8 and divide by 1 clocking modes. This mode is selected at S9.

  • Page 8: Electrical Interface Selection

    Electrical Interface Selection Each of the eight ports on the COMHP 7804 can be individually configured as an RS-232, RS-422, or RS-485 interface. This is selectable via the port DIP-switch, each is labeled with its port number (i.e. S1 = Port1, S2 = Port2 etc.)
  • Page 9 ® CyberResearch Serial Communications COMHP 7804 1 2 3 4 5 6 7 Figure 2 - RS-422 Mode 1 2 3 4 5 6 7 Figure 3 - RS-485 with 'Echo' 1 2 3 4 5 6 7 Figure 4 - RS-485 No 'Echo' CyberResearch, Inc.

  • Page 10: Installation

    4. Gently insert the PCI adapter into the slot. Make sure that the adapter is seated properly. 5. Replace the screw. (This is required to ensure FCC Part 15 compliance.) 6. Replace the cover. 7. Install the cable (if applicable) 8. Connect the power cord Installation is finished. ©Copyright 2003 CyberResearch, Inc.

  • Page 11: Technical Description

    COMHP 7804 Technical Description The COMHP 7804 provides eight RS-232/422/485 ports from a single PCI slot. The COMHP 7804 also features Universal Bus (3.3 and 5.0V) operation. The COMHP 7804 utilizes the 16C864 UART. This chip features programmable baud rates, data format, interrupt control and industry leading 128-byte transmit and receive FIFOs.

  • Page 12: Specifications

    +5VDC +12VDC -12VDC Rating 200 mA 400 mA 32 mA 30 mA Physical Dimensions Board length 6.5 inches (16.51 cm.) Board Height including Goldfingers 4.2 inches (10.67 cm.) Board Height excluding Goldfingers 3.875 inches (9.84 cm.) ©Copyright 2003 CyberResearch, Inc.

  • Page 13: Appendixa - Troubleshooting

    4. Make sure the CyberResearch adapter is securely installed in a motherboard slot. 5. When running DOS or Windows 3.x refer to the supplied CyberResearch and this User Manual to verify that the CyberResearch adapter is configured correctly. This software contains a diagnostic program ‘SSD’...

  • Page 14: Appendixb - Electrical Interface

    +10 volts) represents a binary 0 (space) and -12 volts (-3 to -10 volts) denote a binary 1 (mark). The RS-232 and the EIA/TIA-574 specification define two types of interface circuits Data Terminal Equipment (DTE) and Data Circuit-Terminating Equipment (DCE). The CyberResearch adapter is a DTE interface. RS-422 The RS-422 specification defines the electrical characteristics of balanced voltage digital interface circuits.

  • Page 15: Appendixc - Asynchronous Communications

    ® CyberResearch Serial Communications COMHP 7804 Appendix C - Asynchronous Communications Serial data communications implies that individual bits of a character are transmitted consecutively to a receiver that assembles the bits back into a character. Data rate, error checking, handshaking, and character framing (start/stop bits) are pre-defined and must correspond at both the transmitting and receiving ends.

  • Page 16: Appendixd - Silk -Screen

    ® COMHP 7804 CyberResearch Serial Communication Appendix D - Silk-Screen ©Copyright 2003 CyberResearch, Inc.

  • Page 17: Appendixe - Compliance Notices

    ® CyberResearch Serial Communications COMHP 7804 Appendix E - Compliance Notices Federal Communications Commission Statement FCC - This equipment has been tested and found to comply with the limits for 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.
  • Page 18 ® COMHP 7804 CyberResearch Serial Communication ©Copyright 2003 CyberResearch, Inc.

  • Page 19: Product Service

    Signal connections and programming are the two most common sources of difficulty. CyberResearch support personnel can help you solve these problems, especially if you are prepared for the call.

  • Page 20: Intentionally Blank

    ® COMHP 7804 CyberResearch Serial Communication Intentionally Blank ©Copyright 2003 CyberResearch, Inc.

  • Page 21: Warranty Notice

    CyberResearch, Inc. will, at its option, repair or replace the defective item under the terms of this warranty, subject to the provisions and specific exclusions listed herein.
  • Page 22 ® COMHP 7804 CyberResearch Serial Communication Intentionally Blank ©Copyright 2003 CyberResearch, Inc.
  • Page 24 CyberResearch, Inc. 25 Business Park Drive Branford, CT 06405 USA P: (203) 483-8815; F: (203) 483-9024 www.cyberresearch.com...

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