® 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 DB9M 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.
® CyberResearch Serial Communication COMHP 7804 ©Copyright 2003 All Rights Reserved. June 2003 The information in this document is subject to change without prior notice in order to improve reliability, design, and function and does not represent a commitment on the part of CyberResearch, Inc. In no event will CyberResearch, Inc.
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® CyberResearch Serial Communications COMHP 7804 Contents INTRODUCTION ........................................................................................................................ 1 OVERVIEW .............................................................................................................................................. 1 WHAT IS INCLUDED.................................................................................................................................1 CARD SETUP ..
® CyberResearch Serial Communication COMHP 7804 Introduction Overview The CyberResearch COMHP 7804 is an eight channel RS-232/485/422 PCI Bus serial I/O adapter supporting data rates up to 921.6Kbps. The RS-232 compatibility allows for connection to devices utilizing the RS-232 electrical interface, such as modems, data-entry terminals, and plotters. RS-422 provides excellent communications for long distance device connections up to 4000ft., where noise immunity and high data integrity are essential.
® CyberResearch Serial Communications COMHP 7804 Card Setup Address and IRQ selection The COMHP 7804 is automatically assigned I/O addresses and IRQs by your motherboard BIOS or by a ‘Plug-n-Play’ Operating System. Adding or removing other hardware or moving the adapter to another slot may change the assignment of 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.
® CyberResearch Serial Communication COMHP 7804 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.
® CyberResearch Serial Communications COMHP 7804 ON 1 2 3 4 5 6 7 Figure 2 - RS-422 Mode ON 1 2 3 4 5 6 7 Figure 3 - RS-485 with 'Echo' ON 1 2 3 4 5 6 7 Figure 4 - RS-485 No 'Echo' CyberResearch, Inc. 25 Business Park Drive Branford, CT USA 4 P: (203) 483-8815; F: (203) 483-9024 www.cyberresearch.
® CyberResearch Serial Communication COMHP 7804 Installation Operating System Installation Windows 95/98/ME/NT/2000/XP Do not install the Adapter in the machine until the software has been fully installed. 1. Start Windows. 2. Insert the CD in to your CD drive. 3. If ‘Auto-Start’ is enabled for this drive the software will automatically launch. Otherwise, point your browser to the ‘Index.htm’ on the root of the CD 4. Select ‘Install Software’. 5.
® CyberResearch Serial Communications 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.
® CyberResearch Serial Communication COMHP 7804 Specifications Environmental Specifications Specification Temperature Range Humidity Range Operating 0º to 70º C (32º to 158º F) 10 to 90% R.H. Non-Condensing Storage -50º to 105º C (-58º to 221º F) 10 to 90% R.H. Non-Condensing Manufacturing All Printed Circuit boards are built to UL 94V0 rating and are 100% electrically tested. These printed circuit boards are solder mask over bare copper or solder mask over tin nickel.
® CyberResearch Serial Communications COMHP 7804 Appendix A - Troubleshooting 1. Identify all I/O adapters currently installed in your system. This includes your on-board serial ports, controller cards, sound cards etc. The I/O addresses used by these adapters, as well as the IRQ (if any) should be identified. 2. Configure your CyberResearch adapter so that there is no conflict with currently installed adapters. No two adapters can occupy the same I/O address. 3.
COMHP 7804 ® CyberResearch Serial Communication Appendix B - Electrical Interface RS-232 Quite possibly the most widely used communication standard is RS-232. This implementation has been defined and revised several times and is often referred to as RS-232-C/D/E or EIA/TIA-232-C/D/E. It is defined as “Interface between Data Terminal Equipment and Data Circuit- Terminating Equipment Employing Serial Binary Data Interchange”. The mechanical implementation of RS-232 is on a 25-pin D sub connector.
® 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.
COMHP 7804 ® CyberResearch Serial Communication Appendix D - Silk-Screen 11 ©Copyright 2003 CyberResearch, Inc.
® 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.
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® CyberResearch Serial Communication COMHP 7804 Product Service Diagnosis and Debug CyberResearch, Inc. maintains technical support lines staffed by experienced Applications Engineers and Technicians. There is no charge to call and we will return your call promptly if it is received while our lines are busy. Most problems encountered with data acquisition products can be solved over the phone. Signal connections and programming are the two most common sources of difficulty.
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® CyberResearch Serial Communication COMHP 7804 Warranty Notice CyberResearch, Inc. warrants that this equipment as furnished will be free from defects in material and workmanship for a period of one year from the confirmed date of purchase by the original buyer and that upon written notice of any such defect, 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.
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CyberResearch, Inc. 25 Business Park Drive Branford, CT 06405 USA P: (203) 483-8815; F: (203) 483-9024 www.cyberresearch.
