Owner manual
© Sealevel Systems, Inc. 
SL9028 Revision 7/2006 
REL-32 User Manual
Table of Contents 
INTRODUCTION......................................................................................................................... 1 
OTHER SEALEVEL ISA DIGITAL I/O PRODUCTS .......................................................................... 1 
BEFORE YOU GET STARTED................................................................................................. 2 
WHAT’S INCLUDED ...................................................................................................................... 2 
OPTIONAL ITEMS.......................................................................................................................... 2 
CARD SETUP ............................................................................................................................... 3 
ADDRESS SELECTION ................................................................................................................... 3 
OPTIONS HEADER ........................................................................................................................ 4 
HEADER JP1................................................................................................................................. 4 
OPTIONAL CABLE CONNECTOR P4............................................................................................... 4 
SOFTWARE INSTALLATION.................................................................................................. 5 
PHYSICAL INSTALLATION .................................................................................................... 7 
PROGRAMMING THE REL-32 ................................................................................................ 8 
PROGRAMMING FOR WINDOWS .................................................................................................... 8 
PROGRAMMING FOR LINUX.......................................................................................................... 8 
DIGITAL I/O INTERFACE .............................................................................................................. 8 
OUTPUT PORTS (REED RELAY) .................................................................................................... 8 
CONNECTOR AND JUMPER PIN OUT ............................................................................................. 8 
JUMPER SETUP OPTIONS .............................................................................................................. 9 
OUTPUT PORTS (REED RELAY) PIN ASSIGNMENTS .................................................................... 10 
POWER AND GROUND PIN ASSIGNMENTS .................................................................................. 10 
DB-78 FEMALE PIN ASSIGNMENT ............................................................................................. 12 
DIRECT HARDWARE CONTROL .................................................................................................. 13 
R
EADING THE OUTPUTS ............................................................................................................. 13 
W
RITING THE OUTPUTS ............................................................................................................. 13 
R
EGISTER DESCRIPTION ............................................................................................................. 13 
ELECTRICAL CHARACTERISTICS .................................................................................... 14 
FEATURES .................................................................................................................................. 14 
S
PECIFICATIONS ......................................................................................................................... 14 
EXAMPLE CIRCUITS.............................................................................................................. 15 
APPENDIX A - TROUBLESHOOTING ................................................................................. 16 
APPENDIX B – HOW TO GET ASSISTANCE...................................................................... 17 
APPENDIX C – SILK SCREEN – 3098 PCB .......................................................................... 18 
APPENDIX D – COMPLIANCE NOTICES ........................................................................... 19 
FEDERAL COMMUNICATIONS COMMISSION STATEMENT ........................................................... 19 
WARRANTY............................................................................................................................... 20 










