INTRODUCTION
This manual contains information describing the
installation, calibration and operation of the Model
748P Weight Indicating Instrument. It is intended
to be used as a guide to the operation of your Model
748P Weight Indicating Instrument.
LIST OF FIGURES
Figure No. 1......Mounting Bolt Layout
Figure No. 2......Terminal Block Connections
Figure No. 3......Printer Output Connection
Figure No. 4......PC Board Layout
Figure No. 5......Bi-Directional Interface
Figure No. 6......PWC Relay Board
Figure No. 7......Calibration Switch Location
Figure No. 8......Keyboard Layout
Figure No. 9......Option Board, rear view
Figure No. 10....Logic Level Input Connector
Figure No. 11....Analog Output Calibration
Figure No. 12....Parts Identification
Figure No. 13....Security Seal Installation
FCC COMPLIANCE STATEMENT
WARNING! This equipment generates, uses and can
radiate radio frequency energy and if not installed and
used in accordance with the instructions in this manual,
may cause interference to radio communications. It has
been tested and found to comply with the limits for a Class
A computing device pursuant to Subpart J of Part 15 of
FCC Rules, which are designed to provide reasonable
protection against such interference when operated in a
commercial environment. Operation of this equipment in a
residential area is likely to cause interference in which
case the user, at his own expense, will be required to take
whatever measures may be required to correct the
interference.
All rights reserved. Reproduction or use without expressed
permission of editorial or pictorial content in any manner is
prohibited. No patent liability is assumed with respect to
the use of the information contained herein. While every
precaution has been taken in the preparation of this book,
we assume no responsibility for damages resulting from
the use of the information contained herein. All instructions
and diagrams have been checked for accuracy and ease
of application, however, success and safety in working
with tools depend to a great extent upon the individual
accuracy, skill and caution. For this reason, we are not
able to guarantee the result of any procedure contained
herein, nor can we assume responsibility for damage to
property or injury to persons occasioned from the
procedures. Persons engaging the procedures do so
entirely at their own risk.
TABLE OF CONTENTS
SPECIFICATIONS.......................................... 1
INSTALLATION .............................................. 1
Gimbal Mounting....................................... 2
Load Cell Connection ............................... 2
Printer Cable Installation........................... 3
Auto-On Jumper ........................................ 3
Domestic/International Jumper ................. 3
Bi-Directional Serial Connection ............... 5
SETUP and CALIBRATION............................ 10
OPERATION .................................................. 26
Keypad Functions ..................................... 26
Accumulators ............................................ 30
Annunciators............................................. 32
Truck Storage Operation ........................... 32
Error Codes .............................................. 36
APPENDIX A, OPTION BOARD .................... 37
Analog Output........................................... 37
BCD Output .............................................. 38
Optically Isolated Inputs............................ 38
Analog Output Calibration......................... 38
APPENDIX B, PARTS IDENTIFICATION ....... 40
APPENDIX C, CALIBRATION SEAL
INSTALLATION ............................................ 41
PRECAUTIONS
Before using this instrument, read this
manual and pay special attention to all
“WARNING” symbols:
SERIAL NUMBER
DATE OF PURCHASE
PURCHASED FROM
RETAIN THIS INFORMATION FOR FUTURE USE
IMPORTANT ELECTRICAL
WARNING
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