User Manual
© Sealevel Systems, Inc. 
SL9076 Revision 7/2006 
ACB-ULTRA.LPCI User Manual 
Table of Contents 
INTRODUCTION......................................................................................................................... 1 
ACB-ULTRA.LPCI.................................................................................................................... 1 
O
THER SEALEVEL SYNC PRODUCTS............................................................................................. 1 
BEFORE YOU GET STARTED................................................................................................. 2 
W
HAT’S INCLUDED...................................................................................................................... 2 
OPTIONAL ITEMS.......................................................................................................................... 2 
SOFTWARE INSTALLATION.................................................................................................. 3 
WINDOWS 95/98/ME/NT/2000/XP INSTALLATION ..................................................................... 3 
PHYSICAL INSTALLATION .................................................................................................... 4 
TECHNICAL DESCRIPTION.................................................................................................... 5 
FEATURES .................................................................................................................................... 5 
IUSC™ ....................................................................................................................................... 5 
RAM ........................................................................................................................................... 5 
CONTROL AND STATUS REGISTERS DEFINED............................................................................... 6 
CONTROL AND STATUS NAME DEFINITION .................................................................................. 6 
INTERFACE SELECTION ................................................................................................................ 7 
RESET CIRCUIT ............................................................................................................................ 7 
TSET CLOCK SELECT .................................................................................................................. 7 
Z16C32 REGISTER ACCESS.......................................................................................................... 7 
I/O SIGNAL DERIVATION ............................................................................................................. 8 
25 PIN CONNECTOR SIGNAL LAYOUTS (DB-25 MALE)................................................................ 8 
RS-232 SIGNALS.......................................................................................................................... 8 
RS-485 OR RS-485T.................................................................................................................... 9 
RS-530 (RS-422)......................................................................................................................... 9 
RS-530A ................................................................................................................................... 10 
V.35 SIGNALS ............................................................................................................................ 11 
SPECIFICATIONS..................................................................................................................... 12 
APPENDIX A – TROUBLESHOOTING................................................................................. 13 
APPENDIX B - HOW TO GET ASSISTANCE ...................................................................... 14 
APPENDIX C – ELECTRICAL INTERFACE....................................................................... 15 
APPENDIX D – SILK SCREEN – 5104 PCB .......................................................................... 17 
APPENDIX E - COMPLIANCE NOTICES............................................................................ 18 
FEDERAL COMMUNICATIONS COMMISSION STATEMENT ........................................................... 18 
WARRANTY............................................................................................................................... 19 










