ZETRON 640 DAPT XTRA Use and care manual

Copyright © 2004 by Zetron, Inc.
All Rights Reserved
ZETRON
Model 640 DAPT XTRA Paging Terminal
Installation and Repair
Part No. 025-9416C

Statements
025-9416 iii
WARRANTY
Zetron’s warranty is published in the current Zetron United States Price Book.
LIMITATION OF LIABILITY
Zetron makes no representation with respect to the contents of this document and/or the contents,
performance, and function of any accompanying software and specifically disclaims any warran-
ties, expressed or implied, as to merchantability, fitness for purpose sold, description, or quality.
Further, Zetron reserves the right to revise this document or the accompanying software and to
make changes in it from time to time without obligation to notify any person or organization of
such revisions or changes.
This document and any accompanying software are provided “as is.” Zetron shall not under any
circumstances be responsible for any indirect, special, incidental, or consequential damages or
losses to the buyer or any third party arising out of or connected with the buyer’s purchase and
use of Zetron’s products or services.
COPYRIGHT
This publication is protected by copyright by Zetron, Inc. and all rights are reserved worldwide.
This publication may not, in whole or in part, be copied, photocopied, reproduced, translated, or
reduced to any electronic medium or machine-readable form without prior written consent from
Zetron, Inc.
The software in this product is protected by copyright by Zetron, Inc. and remains the property of
Zetron, Inc. Reproduction, duplication, or disclosure is not permitted without prior written con-
sent of Zetron, Inc.
TRADEMARKS
Zetron is a registered trademark of Zetron, Inc.
All other product names in this document are trademarks or registered trademarks of their
respective owners.

Statements
iv 025-9416
FEDERAL COMMUNICATIONS COMMISSION (FCC) REGULATIONS
1. This device complies with Part 68 of the FCC rules. The FCC registration number of this
device, the ringer equivalence number, the facility interface code (end-to-end 02LS2 and
02GS2, DID 02RV2-T, E&M TL11M telco end and TL11E Zetron end), service order code
(9.0Y and AS.3) and the connection jack type (RJ21X, RJ2GX, RJ2EX), if requested, must
be reported to the telephone company. The FCC registration number and the ringer equival-
ence number may be found on the label attached to the device.
2. The ringer equivalence number (REN) is used to determine the quantity of devices which
may be connected to the telephone line. Excessive RENs on the telephone line may result in
the devices not ringing in response to an incoming call. The sum of ringer equivalence
numbers for all devices connected to a single telephone line should not exceed five (5.0) for
reliable operation. To be certain of the number of devices that may be connected to a line,
as determined by the total RENs, contact the local telephone company.
3. If this device causes harm to the telephone network, the telephone company will notify you
in advance that temporary discontinuance of service may be required. If advance notice is
not practical, the telephone company will notify you as soon as possible. You will also be
advised of your right to file a complaint with the FCC if you believe it is necessary.
4. The telephone company may make changes in its facilities, equipment, operations or proce-
dures that could affect the operation of this equipment. If this happens, the telephone com-
pany will provide advance notice in order for you to make necessary modifications to main-
tain uninterrupted service.
5. This device must not be installed on coin-operated telephone lines or party lines.
6. Repair work on this device must be done by Zetron, Inc. or a Zetron authorized repair sta-
tion. If this device is causing harm to the telephone network the telephone company may
request that you disconnect the equipment until the problem is resolved.
This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of the 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 communica-
tions. Operation of this equipment in a residential area is likely to cause harmful interference in
which case the user will be required to correct the interference at his or her own expense.
Changes or modifications not expressly approved by the manager of Zetron’s compliance depart-
ment can void the FCC authorization to operate equipment.

Statements
025-9416 v
INDUSTRY CANADA REGISTRATION
NOTICE: The Industry Canada label identifies certified equipment. This certification means that
the equipment meets certain telecommunications network protective, operational and safety
requirements as prescribed in the appropriate Terminal Equipment Technical Requirements docu-
ment(s). The Department does not guarantee the equipment will operate to the user’s satisfaction.
Before installing this equipment, users should ensure that it is permissible to be connected to the
facilities of the local telecommunications company. The equipment must also be installed using
an acceptable method of connection. The customer should be aware that compliance with the
above conditions may not prevent degradation of service in some situations.
Repairs to certified equipment should be coordinated by a representative designated by the
supplier. Any repairs or alterations made by the user to this equipment, or equipment malfunc-
tions, may give the telecommunications company cause to request the user to disconnect the
equipment.
Users should ensure for their own protection that the electrical ground connections of the power
utility, telephone lines and internal metallic water pipe system, if present, are connected together.
This precaution may be particularly important in rural areas.
CAUTION: Users should not attempt to make such connections themselves, but should contact
the appropriate electric inspection authority, or electrician, as appropriate.
NOTICE: The Ringer Equivalence Number (REN) assigned to each terminal device provides an
indication of the maximum number of terminals allowed to be connected to a telephone inter-
face. The termination on an interface may consist of any combination of devices subject only to
the requirement that the sum of the Ringer Equivalence Numbers of all the devices does not
exceed 5.
CANADIAN EMC COMPLIANCE NOTICE
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing
Equipment Regulations.
AVIS CANADIEN
Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel
brouilleur du Canada.

Statements
vi 025-9416

Contents
025-9416 vii
CONTENTS
WARRANTY.............................................................................................................. iii
LIMITATION OF LIABILITY ................................................................................ iii
COPYRIGHT............................................................................................................. iii
TRADEMARKS......................................................................................................... iii
FEDERAL COMMUNICATIONS COMMISSION (FCC) REGULATIONS..... iv
INDUSTRY CANADA REGISTRATION.................................................................v
CANADIAN EMC COMPLIANCE NOTICE..........................................................v
AVIS CANADIEN........................................................................................................v
INTRODUCTION
MODEL 640 OVERVIEW ..........................................................................................1
FEATURES ..................................................................................................................1
Messaging Formats .........................................................................................................................1
Telephone Interfaces .......................................................................................................................2
Priority Paging ................................................................................................................................2
Pager Formats .................................................................................................................................2
Remote Transmitter Control ..........................................................................................................3
Easy System Management ..............................................................................................................3
Wide-Area Networking with TNPP or TAP ..................................................................................3
Other Features.................................................................................................................................3
SYSTEM APPLICATIONS ........................................................................................4
Health Care and Public Safety .......................................................................................................4
In-Plant Systems..............................................................................................................................4
Small Market Service Providers ....................................................................................................4
MANUAL USAGE .......................................................................................................5
Organization of Sections.................................................................................................................5
Text Notational Conventions ..........................................................................................................6
Related Manuals..............................................................................................................................6
SPECIFICATIONS
GENERAL....................................................................................................................9
PHYSICAL...................................................................................................................9
ENVIRONMENTAL ...................................................................................................9
ALPHANUMERIC PAGING ...................................................................................10
Modem Input .................................................................................................................................10
Direct Serial Input.........................................................................................................................10

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VOICE CAPABILITIES ...........................................................................................10
TELEPHONE INTERFACES ..................................................................................11
TRANSMITTER INTERFACE ...............................................................................11
SYSTEM MANAGEMENT......................................................................................12
TNPP INTERFACE (Optional) ................................................................................12
TAP Inbound (Optional)............................................................................................13
TAP Outdial (Optional) .............................................................................................13
HARDWARE OVERVIEW
MODEL 640 ARCHITECTURE ..............................................................................15
OPERATING POWER..............................................................................................16
MAIN PROCESSOR MOTHERBOARD ...............................................................17
Paging Terminal Timing ...............................................................................................................17
PCM Highway ...............................................................................................................................17
Voice Prompts And Storage ..........................................................................................................17
DRAM Memory.............................................................................................................................18
Maintenance Modem.....................................................................................................................18
Expansion Slots..............................................................................................................................18
External Hardware Interfaces .....................................................................................................18
Jumper Settings.............................................................................................................................18
PERIPHERAL MOTHERBOARD..........................................................................20
Trunk Card Slots...........................................................................................................................20
Trunk And Radio Station Interface .............................................................................................20
Adjustment Pots ............................................................................................................................21
Jumper Settings.............................................................................................................................21
DUAL TRUNK INTERFACE BOARD ...................................................................22
Line Type Matrix Card.................................................................................................................22
External RS-232 Ports ..................................................................................................................23
Modem Interfaces..........................................................................................................................23
Audio Level Adjustments..............................................................................................................23
DID Trunk Configuration.............................................................................................................24
End-to-End Trunk Configuration................................................................................................25
Ground Start Trunk Configuration .............................................................................................25
E&M Trunk Configurations.........................................................................................................25
DUAL TRUNK 4-WIRE AUDIO INTERFACE BOARD......................................26
ROM DISK BOARD..................................................................................................27
Jumper Settings.............................................................................................................................27
RAM DISK BOARD..................................................................................................28
Jumper Settings.............................................................................................................................28
TNPP INTERFACE ...................................................................................................28
TAP Inbound..................................................................................................................................28
TAP Outdial ...................................................................................................................................28

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PARALLEL PRINTER CARD.................................................................................29
DUAL DIAL CLICK CARD .....................................................................................29
DUAL MF DECODER CARD..................................................................................29
FRONT PANEL LEDs...............................................................................................29
COMMUNICATIONS SETUP
OVERVIEW OF MODEL 640 COMMUNICATION ............................................31
Interface Flexibility.......................................................................................................................31
Communications Software ...........................................................................................................31
Computer Requirements...............................................................................................................32
MCU INSTALLATION.............................................................................................32
TERMINAL HARDWARE CONNECTIONS ........................................................34
Local Serial Connection................................................................................................................34
Remote Modem Connection .........................................................................................................36
ESTABLISHING ZLINK COMMUNICATIONS ..................................................37
ZLINK Connection Through MCU .............................................................................................37
ZLINK Connection Through Another Terminal Emulator.......................................................41
Troubleshooting the ZLINK Connection ....................................................................................43
INSTALLATION
INTRODUCTION......................................................................................................48
Installation Overview....................................................................................................................48
Installation Warning .....................................................................................................................49
Initial Unpacking and Inspection.................................................................................................49
CHOOSING AN INSTALLATION METHOD.......................................................49
Optional Installation Interface Assembly....................................................................................49
66-Type Punchdown Block Installation.......................................................................................50
TELCO CONNECTIONS.........................................................................................51
Ground Reference and Lightning Protection..............................................................................52
Installation Interface Assembly....................................................................................................52
66-Type Punchdown Block Installation.......................................................................................55
RADIO STATION CONNECTIONS .......................................................................61
Installation Interface Assembly....................................................................................................62
66-Type Punchdown Block Installation.......................................................................................64
RF EQUIPMENT INTERFACING..........................................................................66
Modifications For TTL Data Outputs .........................................................................................67
RF Station Jumper Settings..........................................................................................................67
Colocated Transmitters.................................................................................................................68
Remotely Located Transmitters...................................................................................................73
Combined Local and Remote Transmitters ................................................................................74
RF and Microwave Transmitter Link Controllers .....................................................................76
Transmitter Controllers................................................................................................................79

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ADJUSTMENT PROCEDURES
OVERVIEW ...............................................................................................................85
Measurement Conventions ...........................................................................................................85
TRUNK CARD LEVELS..........................................................................................85
Test Equipment..............................................................................................................................86
FROM TEL Adjustment ...............................................................................................................86
Hybrid (BAL R and BAL C) Adjustment....................................................................................89
STATION INTERFACE ALIGNMENT PROCEDURE........................................90
Test Equipment..............................................................................................................................90
Database Setup ..............................................................................................................................90
VOICE Audio Adjustment............................................................................................................93
TONE Audio Adjustment .............................................................................................................94
Transmitter Digital Deviation Adjustment..................................................................................95
DIAL CLICK CARD LEVEL ADJUSTMENT ......................................................95
Test Equipment..............................................................................................................................95
OPTIONAL EQUIPMENT INSTALLATION
DUAL TRUNK CARD...............................................................................................97
TNPP INTERFACE ...................................................................................................98
Installation Procedure...................................................................................................................98
RS-232 Interface Ports..................................................................................................................99
TAP OUTDIAL OPTION..........................................................................................99
Installation Procedures .................................................................................................................99
DIAL CLICK DECODER.......................................................................................108
Installation ...................................................................................................................................108
Level Adjustment ........................................................................................................................109
DUAL MULTI-FREQUENCY (MF) DECODER.................................................110
Installation ................................................................................................................................... 111
PARALLEL PRINTER CARD...............................................................................112
Installation ...................................................................................................................................112
CONNECTION TO AN EXTERNAL ALARM....................................................113
VOICE PROMPTS
OVERVIEW .............................................................................................................115
Custom Voice Prompts................................................................................................................ 115
Database Configuration..............................................................................................................115
VOICE PROMPT CATEGORIES.........................................................................115
VOICE PROMPT ACCESS NUMBER.................................................................116
CUSTOMIZING THE VOICE PROMPTS...........................................................117
Backing Up Voice Prompts .........................................................................................................117
Accessing Voice Prompt Programming Mode...........................................................................118
Recording Tips: ...........................................................................................................................119

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RESTORING VOICE PROMPTS .........................................................................120
Customized Prompts ...................................................................................................................120
Factory-Recorded Prompts ........................................................................................................120
TROUBLESHOOTING and REPAIR
TROUBLESHOOTING THE PAGING PROCESS.............................................123
Paging Input ................................................................................................................................123
Paging Output .............................................................................................................................124
FRONT PANEL LEDs.............................................................................................126
PROGRESS TONES................................................................................................127
TROUBLESHOOTING TNPP PAGING...............................................................128
TNPP Interface LEDs .................................................................................................................128
Testing the TNPP Card ...............................................................................................................129
Network Interface Unit (niu) Diagnostics .................................................................................130
TNPP Packet Troubleshooting ...................................................................................................130
Traffic Command ........................................................................................................................133
RESTORING THE DEFAULT DATABASES.......................................................135
Reformatting the RAM Disk ......................................................................................................136
TROUBLESHOOTING ZLINK COMMUNICATIONS.....................................137
GLOSSARY
PARTS LISTS AND SCHEMATICS
V53 MOTHERBOARD (702-9673G).....................................................................159
Parts List......................................................................................................................................159
Schematic .....................................................................................................................................162
Silkscreen .....................................................................................................................................170
PERIPHERAL BOARD (702-9360G.2) .................................................................171
Parts List......................................................................................................................................171
Schematic .....................................................................................................................................173
Silkscreen .....................................................................................................................................178
DUAL TRUNK (702-9361D) ...................................................................................179
Parts List......................................................................................................................................179
Schematic .....................................................................................................................................181
Silkscreen .....................................................................................................................................184
COMPONENT LOCATIONS ................................................................................185
Dual Dial Click (702-9119C).......................................................................................................185
Dual MF (702-9197D.1)...............................................................................................................185
RAM Disk (702-9386B)...............................................................................................................186
ROM Disk (702-9389B)...............................................................................................................186
TNPP Interface (702-9362C.2) ...................................................................................................187
Terminal Block Adapter (702-9470B)........................................................................................188

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CONFIGURATION DIAGRAMS..........................................................................189
Dual Trunk Telco DID (024-0076A)...........................................................................................189
Dual Trunk Telco End-to-End (024-0077A) ..............................................................................190
Dual Trunk Telco E&M (024-0078A) ........................................................................................191
Dual Trunk Telco Ground Start (024-0079A) ...........................................................................192
INDEX

Introduction
025-9416 1
INTRODUCTION
Zetron Model 640 Paging Terminal
MODEL 640 OVERVIEW
The Model 640 is a low cost, fully automatic dial-access paging terminal. The Model 640 is
specifically designed to provide flexible paging for industrial plants, hospitals, and low RCC
applications. The Model 640 supplies the interface between the telephone and radio systems for
paging applications. It performs selective signaling activation and message transmission.
Through comprehensive advanced software, the Model 640 provides features found on terminals
costing significantly more. State-of-the-art microprocessor circuitry combined with meticulous
engineering provides paging capabilities which rival much larger paging terminals. Even the
newest alphanumeric digital display paging formats can be encoded by the Model 640. In addi-
tion, the Model 640 provides a variety of interface capabilities required for connection to the
telco network, analog and digital radio systems, health care nurse call systems, and telephone
answering service consoles.
FEATURES
Every feature available in the Model 640 is designed to create a small, but versatile and easily
managed paging system.
Messaging Formats
The Model 640 supports six types of pages - tone-only (alert), standard voice, live voice (break-
through), numeric-only display, alphanumeric display, and talkback. A tone-only page alerts the
customer that someone has called them, but cannot indicate who or include any other informa-
tion. Standard voice pages play a caller-recorded voice message over a built-in speaker on the
pager. Live voice paging immediately cuts audio through from the calling party out over the air

Introduction
2025-9416
(like a public announcement system). Numeric pages display a set of numbers (usually a phone
number) that the caller keys in by way of DTMF telephone. Alphanumeric pages are text mess-
ages sent to alphanumeric-compatible display pagers. Alpha messages can be generated through
a variety of input devices, including a standard touch-tone telephone. Talkback paging connects
the caller directly with a paging customer who has a portable radio for 2-way communications.
System Voice Prompts
The Model 640 DAPT XTRA comes with prerecorded voice prompts that guide callers through
the paging entry process. The prompts can be customized by the system operator, if desired. In
addition, voice prompts can be enabled and disabled for the entire system, for a specific trunk, or
for an individual subscriber.
Voice Storage
The Model 640 DAPT XTRA stores up to 280 seconds of pooled voice storage to support voice
pages. The silence compression feature eliminates pauses in the caller’s voice message to maxi-
mize storage space. The voice memory also is used to save messages that are interrupted by a
breakthrough page for later retransmission.
Telephone Interfaces
The Model 640 is flexible enough to interface with a wide variety of telephone line types. In
addition, all four trunks (with two dual-trunk cards installed) can be serviced by a different type
of line. The paging terminal is compatible with E&M, DID, and End-to-End phone lines. The
telephone interfaces can be initiated by ground start, loop start or wink start, depending on the
specific trunk configuration. The 640 can also be connected to a PABX, an RS-232 input device,
or a Zetron Model 103 (manual paging entry station).
In addition, the Model 640 can be configured to decode several types of signaling protocols. The
dial click and MF (multi-frequency) options allow the paging terminal to accept feed digits other
than standard DTMF.
Priority Paging
The Model 640 supports four paging priority levels. The two highest levels of priority are next-
out (where the page immediately moves to the front of the queue) and breakthrough (where the
page is immediately cut through to live air). Priority can be assigned per-subscriber or trunk line.
Priority paging is essential in emergency response applications, where people must receive noti-
fication in a timely manner. In addition, priority allows TNPP-networked systems to give local
paging subscribers faster service than roaming customers.
Pager Formats
The Model 640 supports nearly every kind of paging format available on the market (2-tone, 5/6-
tone, HSC, Golay, POCSAG, and FLEX are among the standard capabilities). This allows for
easy upgrade transitions to newer formats and cost-effective use of older pagers.

Introduction
025-9416 3
Remote Transmitter Control
The Model 640 is equipped with a modem and tone encoder to remotely control transmitters over
a radio or wireline link The Model 640 can control any transmitter capable of decoding analog
Motorola PURCtones. A Zetron Model 66 Transmitter can be added to control other types of
transmitters that do not use the PURCprotocol.
Remote control is useful when the transmitter cannot be colocated with the paging terminal or
when pages are being sent to transmitters in several zones. The Model 640 is capable of sending
pages to up to 16 transmitter zones. In addition, pages can be repeated up to four times with
different zone addresses, to extend the coverage area without purchasing costly simulcast
equipment.
Easy System Management
The Model 640 provides several features that simplify system management. Three separate soft-
ware programs come with the paging terminal. Each is installed on the office computer or is resi-
dent on the paging terminal RAM drive. The software modules are used to view and edit all
aspects of the Model 640’s operation.
MCU is the software package provided for office computer communications with the paging
terminal. It allows the system operator to monitor system traffic (log files) and view statistics and
call counts. In addition, the ZLINK portion of MCU enables the user to link into the terminal and
execute various commands. Some of the most useful operations include generating test pages and
viewing trunk card configuration and activity.
The Model 640 subscriber database is stored in the paging terminal and can be accessed by way
of MCU or through another communications program, such as ProComm®. It configures the all
system and user operating parameters. The databases determine how the paging terminal commu-
nicates with the telco and the transmission equipment.
Wide-Area Networking with TNPP or TAP
The Model 640 provides two optional methods of increasing the paging coverage area. This
ensures that customers can travel outside their local area and remain accessible. TNPP (Telocator
Network Paging Protocol) paging is a popular means of passing pages over a wide region. When
the Model 640 is equipped with the TNPP option, it can exchange tone-only and alphanumeric
display pages with other paging terminals. Pages are passed through the TNPP network with a
variety of media, including dedicated wireline, packet radio, and satellite downlink. TAP
(Telocator Alphanumeric Protocol) is an economical alternative to TNPP networking. It provides
many of the same features, but without the expense of an RF transmission media. TAP sends
pages from the Model 640 to other terminals on a dial-up phone connection by way of modem.
Other Features
The Model 640 has many other useful features, including:
•1,500 subscriber capacity
•Two telephone interfaces (expandable to four)

Introduction
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•Repeat paging
•Flexible programming of multiple pager groups
•Support for alpha modem plus voice and numeric message entry on every telephone
interface
•Multiple serial interfaces for direct alpha message entry
•Canned alphanumeric messages
•Modem access for programming through any dial-up line
•System alarm output
•Autobauding of the maintenance modem at 300 and 1200 baud
•Flexible password protection for individual databases, subscriber phone numbers,
alphanumeric entry access, and paging terminal ZLINK connections
SYSTEM APPLICATIONS
The Model 640 is suitable for a wide variety of paging applications. The paging terminal is flex-
ible and easy to operate, making it the ideal choice for many paging providers.
Health Care and Public Safety
The Model 640 is ideal in systems where fast, reliable paging is essential. The terminal provides
priority paging, including live breakthrough, for immediate notification of emergency response
teams. Detailed system logs of every page are available to track incident response and manage
risk. In addition, most nurse call systems and other alphanumeric input stations are easily inter-
faced with the paging terminal to send detailed messages to key personnel. The Model 640 also
provides an alarm output for immediate recognition of paging terminal failure.
In-Plant Systems
Many in-plant applications, including industrial, government agencies, and institutions, demand
specific paging operations. The Model 640 trunks can be individually configured to interface
with several telephone line types. This allows possible system access from an internal PABX, a
remote telephone company central office, and a local telephone operator. The paging terminal
also offers talkback paging for two-way communications with mobile or portable radios. In addi-
tion, the Model 640 has one alarm output to identify when the terminal is not operating properly.
Small Market Service Providers
The Model 640 is well suited for smaller RCC and PCP systems. The paging terminal is flexible
and allows painless system growth with TNPP networking and a variety of equipment interface
capabilities. Call counting, system statistics, and traffic monitoring all make system management
simple and efficient, even for first-time paging providers. In addition, the system voice prompts

Introduction
025-9416 5
and voice paging features provide personalized messaging and a professional sound that cust-
omers can easily appreciate (DAPT XTRA only).
MANUAL USAGE
Understanding what the manual is saying helps you to install, program, and troubleshoot your
system more quickly and easily. This section orients you on the way things are presented, so that
we can “speak the same language.” Descriptions follow of the way things are identified through-
out the manual, and where to find what you are looking for quickly and easily.
Organization of Sections
The manual is split into several sections so that you can find the exact information you need and
any related topics. The sections are organized as follows:
Specifications
This section lists the detailed operating characteristics and hardware specifications of the Model
640.
Hardware Overview
This section provides an introduction to the hardware components that make up the Model 640
paging terminal. Each board (standard and optional) is described and illustrated to help familiar-
ize you with the system. This includes locations and settings for all jumpers, potentiometers, and
external interfaces.
Communications Setup
This section describes how to link an office computer to the paging terminal. This provides an
easily accessible communications link to the paging terminal to simplify the hardware installa-
tion described in Section 5.
Installation
This section describes how to install and setup the Model 640. Section 5 covers installation of
the radio station (transmitter and receiver) and telco connections. Adjustment procedures are also
described in this section.
Adjustment Procedures
This section describes how to adjust many of the hardware components for optimum perform-
ance. The procedures include communications with the telco trunks and radio station equipment.
Optional Equipment Installation
This section describes how to install each of the optional boards and interfaces available for the
Model 640. This section can be used to add field-upgrades, verify factory-installed boards, or
familiarize the technician with the components installed in the paging terminal and the entire
system architecture.

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Voice Prompts
This section describes how to access, backup, customize, and restore the Model 640 system
voice prompts. This section only applies to the DAPT XTRA.
Troubleshooting and Repair
This section provides some useful troubleshooting and repair tips. It helps the system operator
identify and correct possible problems with the system. This section allows the system operator
to perform some simple repairs and modifications without the assistance of Zetron technicians.
Included are front panel LED indications, progress tone descriptions, and ZLINK
troubleshooting procedures.
Glossary of Terms
This section defines many of the industry-specific technical terms used in this manual.
Schematics and Parts Lists
This section provides the parts lists and schematic diagrams of the Model 640 hardware. This
may be useful for troubleshooting, repair, and interfacing the paging terminal with other
equipment.
Text Notational Conventions
Notational conventions are the manual text styles that identify specific types of words. For
instance, it is important that you know which words refer to filenames, operator commands,
screen quotes, manual titles, etc. The notational conventions will help you understand what is
being said. Table 1summarizes the text styles used in this manual.
Table 1. Table 1. Summary of Manual Text Notational Styles
Sample What it Means
<xxxx> the text inside the < > identifies a keyboard entry, do not include the < > in your entry (for
example, <Tab> means press the “Tab” key)
Xxxx the text that is Initial Capitalized within a sentence refers to a database or MCU menu or
field (for example, Choose Locations from the Edit menu)
XXXX the text in SMALL CAPITAL LETTERS is a system configuration filename
xxxx the text in courier font is a screen view in MCU, the database, or ZLINK [following a
plus (+) prompt]
X the number inside a circle identifies a unique part of a diagram or figure
‘xxxx’ the text in the ‘single quotes’ is a database field entry or a system filename
Related Manuals
Two manuals describe the Model 640. Each manual can stand alone, but cannot cover all of the
information necessary to install, configure and maintain an efficient system.

Introduction
025-9416 7
The Model 640 DAPT XTRA Installation and Repair Manual (Part No. 025-9416) covers the
hardware components of the paging terminal, installation and maintenance. This manual should
be used to perform the initial installation of the paging terminal. It also provides useful trouble-
shooting procedures for situations when the Model 640 is not functioning as expected.
The Model 640 Operating and Programming Manual (Part No. 025-9417) describes how to
program the database and use the paging terminal effectively. This manual should be used to
perform initial programming of the subscribers, telco line types, transmitters, and telephone
access databases. It should be used by the system operator(s) to learn the databases and general
use of the paging terminal. This manual also provides a useful reference during the hardware
installation procedure.
Zetron recommends storing the manuals in a convenient location. For instance, the installation
manual should be colocated with the equipment, and the programming manual should be colo-
cated with the office computer. In addition, when contacting Zetron applications engineers it is
very helpful if the appropriate manual(s) are handy for quick reference.

Introduction
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