NCR 7870 User Manual

NCR 7870 Scanner/Scale

Release 1.0

User's Guide

BST0-2121-90
Issue G

The product described in this book is a licensed product of NCR Corporation.
Trademark Information
It is the policy of NCR Corporation (NCR) to improve products as new technology, components, software,

and firmware become available. NCR, therefore, reserves the right to change specifications without prior
notice.

All features, functions, and operations described herein may not be marketed by NCR in all parts of the
world. In some instances, photographs are of equipment prototypes. Therefore, before using this document,
consult with your NCR representati ve or NCR office for information that is appl icab l e and current.

To maintain the quality of our publications, we need your comments on the accuracy, clarity, organization,
and value of this book.

Address correspondence to:
Retail Solutions Group−Atlanta

NCR Corporation
2651 Satellite Blvd.
Duluth, GA 30096

Copyright © 1999
By NCR Corporati on
Dayton, Ohio U.S.A.
All Rights Reserved

Table of Contents

Chapter 1: Introduction

About the NCR 7870 Scanner/Scale............................1-2

Models.....................................................................1-2

Reading the Product Number ...............................1-3

Common Fe a ture s..................................................1-3

7870-1000-9090........................................................1-4

7870-2000-9090........................................................1-4

7870-3000-9090........................................................1-4

7870-4000-9090........................................................1-4

7870-4500-9090........................................................1-4

Chapter 2: Features, Functions, and Kits

User's Gui de i

General Features and Functions..................................2-1

Bar Code Recognition.............................................2-1

Bi-Optic Scanning...................................................2-2

Decode Features .....................................................2-2

PACESETTER

Displays...................................................................2-3

NCR 7825 Remote Display................................2-3

Integr a t e d Displa y..............................................2-4

No Display ..........................................................2-5

Interface Types .......................................................2-5

Laser Scanner..........................................................2-5

Power Supply .........................................................2-5

Programming the 7870...........................................2-6

Scale Certifications .................................................2-7

Scan Zone................................................................2-8

Plus

.............................................2-2

ii User's Guide

Scanner Power Requirements................................2-8

Soft Power Down....................................................2-8

Top Plates and Scan Windows..............................2-9

Top Plates............................................................2-9

Slot Scanner Window.........................................2-9

Side Scanner Window ...................................... 2-10

Scale Features and Functions .....................................2-11

Scale Functions and Features...............................2-11

Kits...............................................................................2-12

Chapter 3: Site Preparation

Getting Started..............................................................3-2

About Site Preparation.................................................3-4

Custom e r Responsibilities............................................3-6

Environmental Requirements......................................3-7

Operating Range ................................................3-7

Extreme Operating Range .................................3-7

Storage Range.....................................................3-8

Transit Range......................................................3-8

Checkstand Power and Wiring Considerations.........3-9

Power Considerations ............................................3-9

Power Applications............................................3-9

Power Transients Protection..............................3-9

Wiring Considerations ......................................... 3-10

U.S., Canadian, and Japanese Checkstand

Wiring ...............................................................3-10

European Checkstand Wiring.........................3-11

International Checkstand Wiring....................3-12

Wiring Instructions ..............................................3-13

Running Feeder Lines from Main Service

Panel.................................................................. 3-13

Circuit A............................................................3-13

Circuit B............................................................3-14

Circuit C............................................................3-14

Checkstand Considerations.......................................3-15

Ventilation Requirements.................................... 3-15

Service Clearance..................................................3-16

Display Clear a n c e.................................................3-17

Item Diverter.........................................................3-17

Checkstand Hole..................................................3-18

Checkstand Hole - Models 1000 & 2000 .........3-19

Checkstand Hole - Models 3000, 4000, & 45003-20

Cable Lengths and Hole Sizes ...................................3-21

Cable Hole Diameters..........................................3-21

DC Power Cable – Power Supply to 7870...........3-21

AC Power Cords – Outlet to Power Supply.......3-22

Remote Display Cables........................................3-22

Interface Cables - NCR Host Terminals..............3-23

Interface Cables – NCR Host Terminals (cont.) .3-24
Interface Cables – NCR Host Terminals (cont.) .3-25

Interface Cables - Casio Host Terminals.............3-25

Interface Cables – Data Checker Host Terminals3-26

Interface Cables – Epson Host Terminals...........3-26

Interface Cables – Gilbarco Host Terminals.......3-26

Interface Cables – IBM Host Terminals ..............3-27

Interface Cables – ICL Host Terminals...............3-27

Interface Cables – ICL Host Terminals (cont.)....3-28

Interface Cables – Microbilt Host Terminals......3-28

Interface Cables – NEC Host Terminals .............3-28

Interface Cables – SASI Host Terminals.............3-29

NCR 7870 Dimensions................................................3-30

NCR 7870-1000 & 2000 Models ...........................3-30

NCR 7870-3000 Model..........................................3-31

User's Guide iii

iv User's Guide

NCR 7870-4000 & 4500 Models ...........................3-32

Chapter 4: Installatio n

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

Installin g Unit in Che cks t and ......................................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

Determi n i ng Com mun i catio n s Protoc o l...................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: Conn e ct in g t h e Fi eld Se rv ice

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

Procedure 3: Decreasing Load Test .................... 5-14

Instructions.......................................................5-14

Procedure 4: Shift Test ........................................5-15

Securing the Calibration Switch ................................5-16

Chapter 6: Operation

About Using the Operator Controls ............................6-2

Scan Windows ........................................................6-2

Status Indicators.....................................................6-2

Motion De t e ctor......................................................6-3

Reset / Scale Zero Button......................................6-3

Audible Tone..........................................................6-3

Voice Messages.......................................................6-3

About Using the Scanner .............................................6-4

Proper Label Orientation.......................................6-4

Active Scan Zone....................................................6-5

Multiple Read s........................................................6-5

Bar Code Quality....................................................6-6

Operating Instructions .................................................6-7

Power Up ................................................................6-7

Scanner Only Models .........................................6-7

Scanner/Scale Models .......................................6-7

Scanning Procedure................................................6-8

Instructions.........................................................6-8

Not-On-File Error...................................................6-8

Weighting Procedure.............................................6-9

Instructions.........................................................6-9

Changing the Good Read Tone...........................6-10

Instructions.......................................................6-10

Routine Ma inte na n c e..................................................6-11

Instructions.......................................................6-11

User's Gui de v

vi User's Guide

Chapter 7: Programming

General ..........................................................................7-1

How to Program the NCR 7870...................................7-3

Creating the Program.............................................7-3

Step 1. Writing the Program.............................7-3

Step 2. Entering the Program............................7-3

Step 3. Save the Program..................................7-4

Programming Mode...............................................7-5

Programming Tags.................................................7-6

Abort...................................................................7-6

Default.................................................................7-7

End ......................................................................7-7

Hex 0 – Hex F......................................................7-7

Programming Mode...........................................7-8

Save and Reset....................................................7-8

Program Entry Example.........................................7-9

Programming Tips ............................................... 7-12

Program Parameter Descriptions..............................7-13

Communications Protocol...................................7-13

Defaults............................................................. 7-13

Specific Program Parameters...........................7-13

Programming Example.................................... 7-17

Good Read Tone...................................................7-18

Defaults............................................................. 7-18

Specific Program Parameters...........................7-18

Program Example.............................................7-19

Timers....................................................................7-20

Defaults............................................................. 7-20

Specific Program Parameters...........................7-20

Program Example.............................................7-21

Bar Codes – 1 ........................................................7-22

Defaults............................................................. 7-22

Specific Program Parameters...........................7-22

Program Example.............................................7-24

Bar Codes – 2 ........................................................7-25

Defaults............................................................. 7-25

Specific Program Parameters...........................7-25

Program Example.............................................7-27

Bar Codes – 3 ........................................................7-28

Defaults............................................................. 7-28

Specific Program Parameters...........................7-28

Program Example.............................................7-30

Bar Codes – 4 ........................................................7-31

Defaults............................................................. 7-31

Specific Program Parameters...........................7-31

Program Example.............................................7-32

Label Identifiers....................................................7-33

Defaults............................................................. 7-33

Specific Program Parameters...........................7-34

Program Example.............................................7-37

RS-232 Parameters – 1..........................................7-39

Defaults............................................................. 7-39

Specific Program Parameters...........................7-39

Program Example.............................................7-41

RS-232 Parameters – 2..........................................7-42

Defaults............................................................. 7-42

Specific Program Parameters...........................7-42

Program Example.............................................7-44

RS-232 Prefix Byte ................................................7-45

Defaults............................................................. 7-45

Specific Program Parameters...........................7-45

Program Example.............................................7-46

User's Guide vii

viii User's Guide

RS-232 Terminator Byte ....................................... 7-47

Defaults............................................................. 7-47

Specific Program Parameters...........................7-47

Program Example.............................................7-48

RS-232 Communications Options .......................7-49

Defaults............................................................. 7-49

Specific Program Parameters...........................7-49

Program Example.............................................7-52

Scale Parameters...................................................7-53

Defaults............................................................. 7-53

Specific Program Parameters...........................7-53

Program Example.............................................7-54

Miscellaneous Parameters ................................... 7-55

Defaults............................................................. 7-55

Specific Program Parameters...........................7-55

Program Example.............................................7-57

PACESETTER

Plus

Informatio n................................7-59

Mode 1 - Inquiry...................................................7-59

Mode 2 - Real Time...............................................7-60

Mode 3 – Normal..................................................7-62

Host Access t o Tallies........................................... 7-64

Examples o f Host Access to Tallies................. 7-64

Host Reset of Tallies.........................................7-67

Special Programming.................................................7-68

Delay Weight Data to IBM Host Terminal .........7-68

EAN/JAN/UPC Multi-Symbol Scanni ng

Parameters ............................................................7-69

Label Construction...........................................7-69

Single Label Restriction....................................7-69

Transmitting Label Data.................................. 7-69

Early Beep Disable................................................7-72

Good Read Tone Presets......................................7-73

Good Weigh Tone When Transmitting Data......7-74

Terminal Coupon Interface Parameters..............7-75

ASCII Cod e Chart.......................................................7-77

Chapter 8: Troubleshooting

Fault Ide n t ific a t ion .......................................................8-1

Scanner Troubleshooting Chart...................................8-2

Scale Troubleshooting Chart........................................8-3

Voice Messages Troubleshooting Chart...................... 8-5

Appendix A: Programming Worksheets

General .........................................................................A-1

Purpose...................................................................A-1

Format.................................................................... A-1

Shortcuts.................................................................A-1

Defaults..................................................................A-2

Hex Characters ......................................................A-2

Program Entry.......................................................A-2

Programming Parameter Defaults .............................A-3

Worksheets...................................................................A-6

User's Gui de ix

x User's Guide

Revision Record

Issue Date Remarks

A Oct 92 First Issue
B Dec 92 Miscellaneous Changes
C Feb 93 Miscellaneous Changes
D Jan 94 Miscellaneous Changes
E Oct 94 M iscellaneous Changes
FFeb 99 Complete Revision
G Nov 99 Miscellaneous Changes

Radio Frequency Interference Statements

Federal Communications Commission (FCC)

Information to User

This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in
a commercial environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause interference in which case the user
will be required to correct the interference at his own expense.

NCR is not responsible for any radio or television interference caused by unauthorized
modification of this equipment or the substitution or attachment of connecting cables
and equipment other than those specified by NCR. The correction of interference
caused by such unauthorized modification, substitution or attachment will be the
responsibility of the user. The user is cautioned that changes or modifications not
expressly approved by NCR may void the user’s authority to operate the equipment.

User's Gui de xi

Canadian Department of Co mmunications

This digital apparatus does not exceed the Class A limits for radio noise emissions
from digital apparatus set out in the Radio Interference Regulations of the Canadian
Department of Co m muni cat ion s .

Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant les
limites applicables aux appareils numériques de la classe A prescrites dans le
Règlement sur le brouillage radioélectriques édicté par le ministrère des
Communications du Canada.

Voluntary Control Council For Interference (VCCI)

xii User's Guide

C E Mark Applicability

This product co n fo rms to European Union (EU ) Direct iv es:
Council Directive 90/384/EEC

Non-Automatic Weighing Instruments

Scale Regulator y

Notificatio n o f co u n t r y, s t a t e, an d lo ca l re gu la t o ry agencies of
weighing d evice in stallation is re qu ired . Failure to comply wit h can
result in crimin a l p r osecution and jeopa r diz e the a bility to conduct
normal business. The NCR 7870 Scanner/Scale has been certified in
many countries. Contact the NCR Office of Weights & Measures and
Laser Safety for specific country approvals.

NCR Office of Weights & Measures and Laser Safety
Dennis A. Krueger
2651 Satellite Boulevard
Duluth, GA 30096-5810
Phone: [phone]
Fax: [phone]

E-Mail: [e-mail]
Web Site: http://gedwards.AtlantaGA.NCR.Com/kruegd

Declar at ion of Conf ormi t y

Manufacturer’s Name
Manufacturer’s Ad dr ess

User's Guide xiii

NCR Corporation
NCR Corporation

Retail Solutions Group – Atlanta
2651 Satellite Boulevard
Duluth, GA 30096-5810

Type of Equipment

Model Number

Informat ion Techno l ogy Equipment – Bar Code
Scanner

Class NCR 7870-1000, NCR 7870-2000, NCR 7870-3000,
NCR 7870-4000, NCR 7870-4500

NCR Corporation, 1700 South Patterson Boulevard, Dayton, OH 45459,
USA, declares that the equipment specified conforms to the referenced
EU Directives and Harmonized Standards.

EU Directive Harmonized Standard(s)

89/336/EEC (EMC) EN 55022: 1987 (CISPR 22)

EN 50082-1, Part 1: 1992
IEC 801-2: 1984
IEC 801-3: 1984
IEC 801-4: 1988

*90/384/EEC
(Weights & Measures)

EN45501

This Directive is not applicable to NCR 7870-1000 or NCR 7870-3000

Director of Quality Assuranc e

NCR Corporation
Retail Solutions Group — Atlanta
2651 Satellite Boulevard
Duluth, GA 30096-5810

European Contact:

International IP Counsel
915 High Road, North Findlex
London N12 8QJ
United Kingdom

xiv User's Guide

Scale Identi fication Lab el

NCR CORPORATION

Model 7875-2000
Max 13.995 kg Min 0.1 Kg ID
e = d = 0.005 kg Approval
Lim 19.990 kg +10 C /+40 C Serial No

13.995 Kilogram (kg) Label

NCR CORPORATION

Model 7875-2000
Max 9.995 kg Min 0.1 Kg ID
e = d = 0.005 kg Approval
Lim 19.990 kg +10 C /+40 C Serial No

NCR CORPORATION

Model 7875-2000
Max 30.00 Ib Min 0.2 lb ID
e = d = 0.01 lb Nmax3000 Approval
Lim 44.00 lb +10 C /+40 C Serial No

NCR CORPORATION

Model 7875-2000
Max 30.00 Ib Min 0.2 lb ID
e = d = 0.01 lb Nmax3000 Approval
Lim 44.00 lb +10 C /+40 C Serial No

Note: e = scale interval; d = scale division;

Max 30.00 lb = maximum weight permitted on scale
Min 0.2 lb = minimum weight that should be measured on scale
Nmax3000 = maximum scale divisions

9.995 Kilogram (kg) Label

Pound (lb) Label

Removing Label causes
VOID Indication

16884

Laser Safety

The NCR 7870 Scanner is not intended for long-term viewing of the
direct laser lig ht. However, the unit is sa fe if us e d as it was in t e n ded.

Laser Saf et y Label

Class IIa Laser Product. Avoid Long-Term Viewing of Direct Laser Light.

Appareil á laser de classe IIa Dviter toute exposition
prolongée de la vue á la lumiére laser directe.

Clase IIa Producto Laser. Traté de no ver directamente él Rayo
Laser por mucho tiempó.

(IEC CLASS 1 LASER PRODUCT)

User's Gui de xv

R0130

xvi User's Guide

Country Language Specific IEC Class 1 Laser Labels

CLASS 1 LASER

PRODUCT (IEC 825)

APPAREIL A LASER

LASER KLASS 1

Zeitbasis 1000 s

DE CLASS 1

PRODUCTO LASER

CLASE 1

LUOKAN 1

LASERELAITE

KLASS 1

LASER APPARAT

R0130B

Laser M odule Label

User's Guide xvii

Laser Power

This laser module
does not comply
with 21CFR1040.
USE ONLY AS A
COMPONENT.

R0132A

The NCR 7870 Scanner meets the following laser power requirements.

• Class IIa CDRH (Center for Devices and Radiological Health)

• Class 1 EN60-825 (Europäische Norm)

• Class 1 IEC 825-1 1993 (International Electrotechnical

Commission)

xviii User's Guide

Following is the radiant energ y of the las er light as applied to each of
the specified requirements.

Maximum Average Radian t Power (CDRH Cal cu lation)
Accessible Emi ssion Lim it (CDRH Calculation)
Maximum Radiant Power (EN60825-1 / IEC 825-1 Calculation)
Accessible Emission Limit (EN60825-1 / IEC 825-1 Calcul ation)

0.87 microwatts

3.9 microwatts

0.45 milliwatts

0.59 milliwatts

Caution: Use of controls or adjustments or performance of procedures
other than specified herein may result in hazardous radiation
exposure.

Chapter 1: Introduction

This chapter describes the models, features, and kits available for the
7870 line of scanner/scales. To familiarize you with the 7870, there is a
general overview on the unit, the models, and major components.

NCR 7870
Scanner/Scale

Power Supply

Power Cable

Power Cord

R0122

1-2 Chapter 1: Introduction

About the NCR 7870 Scanner/Scale

The NCR 7870 is used in high-performance scanning applications in
food distribution, mass merchandise, warehouse clubs, and large drug
store chains. It is a bi-optic scanner/scale that combines the
characteristics of a slot (horizontal) scanner and a side (vertical)
scanner into a single cabinet.

Bi-optical sca n n in g crea t es a larger, four-side d scan zone which allows
the 7870 to read bar codes faster and with less orientation effort from
the checker. Scan line speeds of 2,400 lines per second permit
continuous item speeds of 2 meters per second. A good checker
operates in the range of 0.8 to 1.0 meters per second.

Models

The PACESETTER
Standard Decode feature, analyses and corrects information from
defective labels. PACESETTER
you can iden t ify p r od u cts and man ufacturers wit h poo r label q uality.

The scale will we ight items less fiv e po un ds (2 . 2 7 kg ) in 0.9 seconds.
The weight plate is offset toward the checker, allowing the checker to
do what is natu ra l wh en lift in g heavy object s – pull the we ight closer to
the body. This less e ns ope ra to r lo wer ba ck strain.

The overall resu lt o f these and many other design qua lit ies is an
ergonomic scanner/scale with a very high first-pass read rate.

The NCR 7870 is av a ilable in fiv e mode ls:

• 7870 - 1000 - 9090 – scanner only, standard length

• 7870 - 2000 – 9090 - scanner and scale, standard length

• 7870 - 3000 – 9090 - compact scanner only

• 7870 - 4000 – 9090 - compact scanner/scale (third party scale,

Plus

technology, available as an upgrade over the

Plus

also keeps track of bad labels so

European market)

• 7870 - 4500 – 9090 - compact scanner/scale (NCR scale)

Reading the Product Number

Class 7870
Major Model:
10 = Scanner (Standard Size)
20 = Scanner/Scale (Standard Size)
30 = Scanner (Compact)
40 = Scanner/Scale (Mid-Size, European Scale)
45 = Scanner/Scale (Mid-Size)
Sub-Model: none
Power: 90 = No Characteristics
Language: 90 = No Characteristics

Common Fe atures

Chapter 1: Introduction 1-3

7870 XX00 90 90

14943

• Standard Decode or PACESETTER

Plus

and Standard Decode

• Interfaces for popular host terminals

• Large select io n o f p o we r cords t o meet cus t om a n d reg io n a l

needs while providing fle x ible co n figuration s wit h t h e
universal power supply

• Data cables ordered separate or as part of a kit

• For Scanner/Scale models -- NCR 7825 Remote Display

(standard for curren t mode ls ), In t egrated Display, or No Display

• Print or on-lin e d ocumentation

• Choice of Stainless Steel Top Plate equipped with either

Sapphire or Diamond-Coated Glass Scan Window

• Custom labels fo r t h e scann e r and scale t o mee t local

requireme n ts for las e r safe ty a n d/or weights and measur es

1-4 Chapter 1: Introduction

7870-1000-9090

7870-2000-9090

7870-3000-9090

This is the st anda rd bi-o p t ic scanner only model. It is full-sized,
designed to fit in a 20+ inch (51+ cm) wide checkstand. It can be
configured with a variety of top plates and glass options. The 7870­1000 will fit into the counter hole for the NCR 7820.

This is the st anda rd bi-o p t ic scanner/scale m od el. It is ide n t ical t o the
7870-1000 with the addition of a scale unit. The 7870-2000 can be
ordered with the post-mounted NCR 7825 Remote Display (standard),
an integrated display, or no display. The 7870-2000 will fit into the
counter hole for the NCR 7820.

This is the com p a ct, bi-optic, scanner only mode l. With the sca le be d
removed, the length is reduced to 34.3 cm (13.5 in.) to fit in European
checkstands where space is tight and the checker is often seated.

7870-4000-9090

7870-4500-9090

This is the subco m pact scann e r/s ca le mod e l. With a lengt h o f 43 cm
(17 in.), the 7870-4000 has a footprint between that of the full-sized
1000/2000 models and the compact 3000 model.

The 4000 model uses a price-computing scale to meet European
requirements. This scale uses info rm a tio n obtained from the host
terminal and the measured weig h t to ca lcu la te the price in t e rn ally. The
price computing function makes the 4000 model different from all
other 7870 model scales which measure item weight and transmit the
data to the host term inal for price calculatio n .

The 4500 model is identical to the 4000 model except the scale has no
internal p rice -co m puting function a n d is manufactured by NCR .

Chapter 2: Features, Functions, and Kits

This chapter describes the features, functions, and kits. Specification
and performance data on the 7870 unit and its major components is
also provided.

General Features and Functions

Bar Code Recognition

The 7870 can recognize and read a number of bar codes including:

• UPC-A • Code 39 (Code 3 of 9)

• UPC-E • Code 128

• UPC-D (limited s e t ) • Interleaved 2 of 5

• EAN-8/13 • Add-On Codes

• JAN-8/13

It is possible that in some situations, the 7870 may be able to read more
types of bar codes than the host terminal’s application program. In
such a case, either the application program must be upgraded to read
these bar codes or the 7870 must be told, using the Programming Tags
(BST0-2121-74), to ignore the particular bar code type.

2-2 Chapter 2: Features, Functions, and Kits

Bi-Opti c Sca nni ng

The NCR 7870 combines horizontal and vertical scan patterns. Having
two active scan windows allows the checker to bring a product into the
scan zone without having to orient it to a single scan window. Portions
of the bar code are read by each scanner, assembled into a complete
code by the digital board and sent to the host terminal.

Decode Features

Standard Decode and PACESETTER
label decoding. Standard Decode is the standard feature and
PACESETTER

Plus

upgrade includes the Standard Decode.

PACESETTER

Bar code labels in a ret ail env iron ment are occasiona lly un rea d able .
Labels can be overprinted, underprinted, or truncated. Others may
have missing margins or be placed around corners. PACESETTER
determine s wh a t is wro ng wit h a la be l, compensat es and fix es the d ata,
and transfers the information to the host terminal. Voice messages can
be used to describe what is wrong with a label.

There are three modes of operation in PACESETTER

• Mode 1 – Inqui r y Mode

• Mode 2 – Real-T ime Mode

• Mode 3 – Oper ati ons M ode

Mode 1 – Inquiry Mode

Inquiry mod e kee ps a t a lly cou nt of label readabilit y . Labels are
judged as:

Plus

is the upgrade. Please note that the PACESETTER

Plus

Plus

are available for bar code

Plus

Plus

.

Good reads No reads (incomplete labels)
Good reads with overprinted bars Missing margins
Good reads with underprinted bars

Displays

Chapter 2: Features, Functi ons, and Kits 2-3

In Mode 1 the t a lly counts are disp layed on the int eg ra t e d dis play or
the NCR 7825 remote display. The percentage of each error type to the
good reads t a lly is als o d isp la yed. All the tally counts can be reset to
zero.

Mode 2 – Real-Time Mode

In Mode 2 the scanner is off-line and the scale is disabled. The scanner
reads bar codes and in d ica te s la bel re a da bilit y , whethe r labels a r e
missing bars, overprinted, underprinted, missing margins, or are “no
read.”

Mode 3 – Operations Mode

Mode 3 is the norm a l ope ra t ing mode . While in t h is mod e, the scanner
can be programm e d to add traile r in fo rm a tio n a bou t label re a da bilit y
to the UPC/EAN data. The host terminal must be capable of receiving
the trailer and configured appropriately.

A display separate from the host terminal is useful and sometimes
required for use with NCR 7870 Scanner/Scales -- the 2000, 4000, and

4500. These models are available with a remote post-mounted display,
an integr at e d d isp la y, or no display .

NCR 7825 Remote Di sp l a y

The post-mounted NCR 7825 is the standard display and is available as
a user-inst a lla ble kit to upgrade older u n its in th e field. Early v ersio n s
of the NCR 7825 Remote Display are mounted on a post that attaches
to the checkstand. The current NCR 7825 is a compact design available
with a single or dual display, one for the customer and one for the
checker. The following illustrat ion shows the curren t mod el wit h du al
displays a n d the earlie r m o de l.

2-4 Chapter 2: Features, Functions, and Kits

NCR 7825 Remote

Compact Display

NCR 7825 Remote

Post Display

16345

Depending on the checkstand construction, a keyboard may be
mounte d above the 7 870, wh ich will o bs t ru ct the v ie w of the int egrated
display. In this case, it may be advantageous to install an NCR 7825
Post Mounted Display, which can be used with or without an
integra t e d display.

Integrated Display

The integrated displa y is an inset, LCD locate d o n th e top su rfa ce of t h e
tower. Depending on the checkstand design, the integrated design
may or may not be appropriate.

Integrated Display

Tower

16819

Interf ace Ty pe s

Laser Scan n er

Chapter 2: Features, Functi ons, and Kits 2-5

No Display

If the 7870 is ordered with no display, the scale information is usually
displayed on the host terminal display. Please note, the host terminal
must be approved to perform a live/gross scale weight. This
arrangement is not available in all host terminals and some Weight and
Measures au thorit ies do not permit this arrang ement.

The NCR 7870 communicates with the host terminal through various
types of interfaces. The 7870 Scanner always uses one interface cable.
However, some host terminals require dual cables for and NCR 7870
Scanner/Scale. See the
Preparation for available interface cables.

The 7870 operates with the performance of two scanners yet the bi­optic scan pattern is created by a single laser and spinner motor. A 24 ­line convergent scan pattern (1 2 lines per scan window) is gen e ra ted by
the laser diode. A 3-Phase, DC, brushless motor spins a tetrahedral
mirror at 6000 RPMs. The laser beam is reflected onto the stationary
mirrors in the Optics Assembly and then out the Scan Windows. The
Spinner Motor provides a scan speed of 2400 scan lines (100 scan
frames) per second. This enables the 7870 to read at a continuous item
speed of 2.0 meters per second. An experienced checker scans at a rate
of 0.8 to 1.0 meters per second, so the 7870 is able to keep up with high
volumes and fast checkers.

Interface Cables

section in Chapter 3: Site

Power Supply

A univers al, switching P o we r Supp ly is us e d to prov id e DC volt a g e. It
has a replaceable, 3 m (10 foot) cord for connection to the power outlet
or source . A low volta ge power cable conn e ct s the Power Supp ly to
the unit. The Power Supply can be fixed to the unit’s chassis on or
located on the floor or checkstand in the NCR 7870-1000 and 2000. For
other mod e ls, th e Po wer Supp ly must be insta lle d in th e che ckstand.

2-6 Chapter 2: Features, Functions, and Kits

An outboard power supply permits the 7870 to operate without
checkst a n d ve n t ilat io n . The Power S up p ly a cce p t s in pu t lin e vo lta ges
from 90 to 260 VAC at a frequency range of 47 to 63 Hz.

For a list of Power Cables and Cords, see the

Sizes

section in Chapter 3: Site Prepar a tio n.

Power Cable

(To AC)

Outboard Power Supply

Programming the 7870

The NCR 7870 is featurized to fit a customer’s needs by using
programm ing tags which alt e r the un it ’s operating parameters.
Following are some of the more common parameters which may be
adjusted:

• Communications Protocol • Code 39

Power Cord (To Unit)

Cables Lengths and Hole

16822

• Good Read Tone • Code 128

• Not-On-File Tone Volume • RS-232

• Timers • Interleaved 2 of 5

• UPC/EAN • PACESETTER

Plus

• Add-On Code • Label Identifiers