NCR 7870 manual Installation, Calibration

iv User's Guide

NCR 7870-4000 & 4500 Models	3-32
Chapter 4: Installation
Getting Started	4-1
Reporting a Damaged Unit	4-1
What’s in the Box	4-1
Cable Verification	4-2
Checkstand Verification	4-2
Installing Unit in Checkstand	4-3
Instructions	4-3
Install Cables	4-3
Determining if the Unit is Operational	4-8
NCR 7870-1000 and 3000 Scanners	4-8
NCR 7875-2000, 4000, and 4500 Scanner/Scales ..	4-8
If the NCR 7870 Does Not Pass Level O
Diagnostics	4-8
Checkout Reading Operation	4-9
Programming	4-9
Determining Communications Protocol	4-10
Scale Address for IBM	4-11
Chapter 5: Calibration
General	5-1
Calibration Procedure	5-3
Section 1: Exercising the Scale	5-3
Section 2: Accessing the Calibration Switch	5-4
Section 3: Connecting the Field Service
Calibration Display	5-7
Section 4: Performing the Calibration	5-9
Verifying Calibration	5-11
Procedure 1: Increasing Load Test	5-12
Procedure 2: Over-Capacity Test	5-13