Zetron Model 16 operating Guide

Z E T R 0 N

MODEL 16

ALPHANUMERIC ENCODER

OPERATING MANUAL

#025-9167H

* * ** * * * * * * * ** * * * * * * * * * * ** * * ** * * ** * * ** *

Please check for change information at the end of this manual.

*********************************** ***

COPYRIGHT 1991 - 1995 ZETRON, INC.

1. INTRODUCTION

How to use this manual ........................................... 1-1

Model 16 Alphanumeric Paging Terminal

Operating Manual

TABLE OF CONTENTS

General

Features (terminal and peripheral encoder)

2. SPECIFICATIONS

General specifications ........................................... 2-1

Programming specifications ....................................... 2-2

Electrical specifications ........................................ 2-3

Environmental requirements ....................................... 2-3

3. BASIC OPERATION

Power up

Startup message

Reset ............................................................. 3-1

Idle .............................................................. 3-2

..........................................................

.........................................................

......................

..................................................

1-2

1-2

3-1

3-1

Computer serial I/O answer

Computer serial disconnect

Computer access

Computer logon

Operating mode selection flowchart

Batching

Transmit

Request

Inhibits

.........................................................

.........................................................

..........................................................

.........................................................

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3-2

3-2

3-2

3-3

3-4

3-5

3-5

3-5

3-6

Model 16 Alphanumeric Paging Terminal

3. BASIC OPERATION (cont'd)

Operating Manual

TABLE OF CONTENTS

Keying

Paging

Station ID

Remote Control

Transmission flowchart ........................................... 3-8

ЗА. KEYBOARD PAGING

Keyboard paging mode ............................................. 3A-1

Logon

Timeouts

User database paging ............................................. 3A-1

User number

Message

...........................................................

...........................................................

.......................................................

............................................................

.........................................................

..........................................................

..........................

......................................................

......................... 3-7

3-6

3-6

3-7

3A-1

3A-1

3A-1

3A-2

Example

Full capcode paging .............................................. 3A-3

Format

Capcode

Function

Message

Alpha (y/n)?

Page now (y/n)? .................................................. 3A-4

Acceptance

..........................................................

...........................................................

..........................................................

.........................................................

..........................................................

.....................................................

.......................................................

3A-3

3A-3

3A-3

3A-4

3A-4

3A-4

3A-5

Model 16 Alphanumeric Paging Terminal

3B. DATA ENTRY DEVICES

Operating Manual

TABLE OF CONTENTS

Entry stations

Custom applications .............................................. 3B-1

Name and pager number ............................................ 3B-1

Service and protocol ID

Message entry

Operation

Programming checklist for Model 16

Programming checklist for entry station

4. PROGRAMMING

Programming the Model 16 ......................................... 4-1

Initial program values ........................................... 4-1

Storage

...................................................

................

....................................................

........................................................

..............................

..........................................................

3B-3

.........................

3B-1

3B-3

3B-3

3B-4

3B-5

4-1

Suggested order of programming

Initialization .............................................. 4-2

System menu selections ...................................... 4-2

User menu selections ........................................ 4-2

Programming logon ................................................ 4-3

Main menu

Making selections and inputting data

........................................................

..................................

............................

4-2

4-3

4-4

Model 16 Alphanumeric Paging Terminal

4A. SYSTEM PROGRAMMING

Operating Manual

TABLE OF CONTENTS

System menu

Communications (C) .......................................... 4A-1

Paging options (0) .......................................... 4A-2

Paging formats (F) .......................................... 4A-3

Station ID (I) .............................................. 4A-4

Transmitter (X) ............................................. 4A-4

Passwords (P) ............................................... 4A-6

Configuration (G) ........................................... 4A-6

History (H) ................................................. 4A-7

Reset (Z) ................................................... 4A-8

Call counting (B) ........................................... 4A-8

Set time/date (S) (future option)
Range transmissions (R)

4B. USER PROGRAMMING

Pager capabilities ............................................... 4B-1

User menu

Capcode (C) ................................................. 4B-1

Function (U) ................................................ 4B-2

Msg type (M) ................................................ 4B-2

Format (F) .................................................. 4B-2

Display (D) ................................................. 4B-3

Validate (V) ................................................ 4B-3

Priority (P) ................................................ 4B-4

Require message (R) ......................................... 4B-4

Tone only (0) ............................................... 4B-4

Reset (Z)

......................................................

........................................................

..........................

....................................

...................................................

4A-1

4A-8
4A-8

4B-1

4B-4

Examples

4C. CALL COUNTING

Call counting menu ............................................... 4C-1

Getting a printout of call counts

Downloading counting data ......................................... 4C-2

.........................................................

Display counts (D)

Clear counts (Z) ............................................ 4C-1

..........................................

................................

4B-5

4C-1

4C-2

Model 16 Alphanumeric Paging Terminal

Operating Manual

TABLE OF CONTENTS

4D. HAYES COMPATIBLE MODEM INTERFACE

Introduction

Programming

Modem operation .................................................. 4D-2

Local operation

Using DTR/DCD handshaking ........................................ 4D-3

Modem communications protocol

Model 16 default initialization string ..................... 4D-5

Model 16 default hangup string
Model 16 command string modifiers

Hayes compatible modem S-register summary .................. 4D-6

AT command response codes

AT command summary .......................................... 4D-7

5. DATA COMMUNICATIONS PROTOCOL

Connection

Logon sequence

.....................................................

......................................................

.........................

.......................................................

...................................................

4D-3

...................................

.............................

..........................

..................................

4D-1

4D-1

4D-4

4D-5
4D-5

4D-6

5-1

5-1

Paging data transfer ............................................. 5-3

Disconnect

Optional messages ................................................ 5-6

Transaction example .............................................. 5-7

6. INSTALLATION

Installation warning ............................................. 6-1

Installing new EPROMS

First Time Installation .......................................... 6-1

Power hookup

AC power

DC power

Com Port Switch settings ......................................... 6-2

.......................................................

...........................

.....................................................

....................................................

....................................................

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5-5

6-1

6-2
6-2
6-2

Model 16 Alphanumeric Paging Terminal

6. INSTALLATION (cont'd)

Computer or CRT hookup ........................................... 6-3

Computer serial I/O connection

Operating Manual

TABLE OF CONTENTS

.............................

6-3

Receiver

Transmitter

Transmitter sharing .............................................. 6-5

One paging terminal to transmitter connection -- digital only ... 6-6

One paging terminal to Motorola PURC station -- digital

Tone Remote Control

Tone Remote Control Protocol

Transmission adjustments ......................................... 6-10

Test page

I/O signal lists ................................................. 6-12

.........................................................

Channel busy (COR) .......................................... 6-3

......................................................

Digital data ................................................ 6-4

Push-to-talk relay (PTT)

Request to transmit (request & request 2) .................. 6-4

Terminal busy (busy in)

.............................................

........................................................

Transmitter - J2 ............................................ 6-12

Computer (serial I/O) - J1

...................................

....................................

........

....................................

.................................

6-3

6-4

6-4

6-4

6-6

6-7

6-9

6-11

6-13

7. REPAIR

Fault identification ............................................. 7-1

Model 16 paging encoder -- stand alone parts list (702-9305F) ... 7-3

Model 16 paging encoder -- stand alone schematic (008-9305F)

Model 16 paging encoder -- stand alone silkscreen (702-9305F) ... 7-8

Model 16 paging encoder -- pc card parts list (702-9306E)

Model 16 paging encoder -- pc card schematic (008-9306E) ........ 7-11

Model 16 paging encoder -- pc card silkscreen (702-9306E) ....... 7-14

---

......

7-5

7-9

8. REFERENCE

Alphanumeric pagers .............................................. 8-1

Model 16 Alphanumeric Paging Terminal

Operating Manual

TABLE OF CONTENTS

Motorola Optrx .............................................. 8-1

NEC D4 Alpha ................................................ 8-1

Panasonic Panapage 1000

....................................

8-2

Glossary of terms used in this manual

Jumper settings .................................................. 8-5

............................

8-3

WARRANTY STATEMENT

Zetron's warranty is published in the current Zetron U ni t ed States Price

Bo o k .

FEDERAL COMMUNICATIONS COMMISSION (FCC) REGULATIONS

To comply with FCC regulations, the following requirements must be met:

1. This device complies with Part 15 of the FCC rules for a Class A
digital device. Operation is subject to the following two conditions:

a. This device may not cause harmful interference.

b. This device must accept any interference received, including

interference that may cause undesired operation.

2. Warranty repair work on this device must be done by Zetron, Inc. or a

Zetron authorized repair station.

COPYRIGHT NOTICE

The software in this product is copyrighted by and remains the property of
Zetron, Inc. Reproduction, duplication, or disclosure is not permitted
without prior written consent of Zetron, Inc. No part of this document may
be copied or reproduced in any form without the prior written corfsent of
Zetron, Inc.

TRADEMARK NOTICE

Golay and Optrx are trademarks of Motorola, Inc.
NEC is a registered trademark of NEC America, Inc.
Touch-Tone is a registered trademark of AT&T.
Zetron is a registered trademark of Zetron, Inc.

All other product names in this document are trademarks or registered
trademarks of their respective owners.

1. INTRODUCTION

How to use this manual ........................................... 1-1

General ...................................................

Features (terminal and peripheral encoder)

......................

.......

1-2

1-2

SECTION 1 - INTRODUCTION

HOW TO USE THIS MANUAL

The Model 16 Alphanumeric Paging Terminal has many features that will not
be applicable to every paging system into which it will be installed. This
manual covers all of those features but it may not be necessary for you to
read all of the manual. The following lists will guide you to the Sections
that are relevant to your application needs and interests.

To the Installation Technician:

1. Turn directly to "Section 6 - Installation" which describes all the

connections that will be necessary and the initial adjustments that will

interface the Model 16 to the paging system.

2. You will need to refer to "Section 4A - System Programming" for the
specific details on programming the Transmitter configuration values.

3. A complete set of schematics and parts lists are contained in
"Section 7. - Repair".

4. A variety of miscellaneous information is available in "Section 8. -
Quick Reference". Look here if you still have a question not answered
by one of the chapters listed above.

To the System Operator:

1. Most importantly, you should read "Section 3. - Basic Operation."
This will give you an overview of what the Model 16 can do.

2. Now that you know what the Model 16 can do (and should do) you are
ready to tackle "Section 4. - Programming". This will probably be the

most time consuming step, but it need not be the most difficult!

3. The material in "Section 5. - Data Protocol" describes the method for
data transfer between the Model 16 and a data entry device or computer.
This chapter is required reading only for system operators who are

interfacing their own computer software to control the Model 16.

4. Hopefully you will never need to look in "Section 7. - Repair", but
if a problem arises, that's where you should look for a quick

troubleshooting guide and a complete set of schematic diagrams.

5. The material in "Section 8. - Quick Reference" includes some general
information. If you don't find the answer elsewhere in the manual, it

may be here.

1-1

SECTION 1 - INTRODUCTION

GENERAL

The Zetron Model 16 Alphanumeric Paging Terminal provides entry for
alphanumeric display pagers by fully encoding and batching digital display
formats. The Paging Terminal services incoming calls via its RS-232 serial

input. Pages are accumulated into batches for efficient radio transmission.

Concurrent serial input processing and transmitter control provide 'for high
paging throughput while facilitating simple and efficient transmitter
sharing with existing paging terminals. This feature, backed up by an
extensive set of other features, makes the Model 16 an attractive choice
for adding alphanumeric message capabilities to new or existing paging

installations.

FEATURES

- Local serial port for computer or CRT connection

- Manual or automated page entry

- Compatible with all alphanumeric data entry stations capable of a
serial connection

- Encodes POCSAG and GSC digital formats

- Tone only and numeric paging, as well as alphanumeric

- Will accommodate either standalone or shared radio channels

- Non-volatile programming memory for Terminal operation and Subscriber data

- Field programming of capcodes and functions

- Optional call and word count accumulation

- Can be equipped as a stand-alone unit or a PC card

- Optional tone remote interface with modem

1-2

2. SPECIFICATIONS

General specifications

Programming specifications

Electrical specifications

Environmental requirements

..........................................

......................................

.......................................

.....................................

2-1

2-2

2-3

2-3

GENERAL SPECIFICATIONS

User Capacity - 1000 subscriber database

- Random capcode and attribute programming

- Unlimited full capcode for computer dispatch

SECTION 2 - SPECIFICATIONS

Signaling Formats

- Batched POCSAG/NEC D4 tone only, numeric display, and
alphanumeric display

- Batched Motorola Golay Sequential Code (GSC) for tone
only, voice, numeric display, and alphanumeric
display

- Programmable batch interval (0-2550 sec)

- Priority paging to bypass the batch interval

Message Entry - Conversational manual paging from CRT

- Any RS-232C serial compatible data station compatible

with Motorola protocol, send by subscriber number or
full capcode

Computer/CRT

Interface

- One RS-232C compatible serial input

- Field selectable data transmission rate for 300,
1200, 2400, 4800, or 9600 baud; even, odd, or no

parity

Connect

Disconnect

- Log-on received on RS-232C serial input

- Inactivity timeout

LED Indicators - Power, Transmit (stand-alone model only)

Parameter Memory

- Low power static RAM with battery backup for storage

of all programming options, subscriber database, and
call counting information

- Memory self-check

Call Counting

Option

- Counts calls and message characters per subscriber
Maximum 65,000 calls per subscriber

Maximum 65,000 characters per subscriber
Rollover prevention

Morse Code ID - Automatic station ID at 20 wpm

- Up to 8 characters, field programmable

- Programmable for 15- or 30-minute intervals, or to

disable

2-1

SECTION 2 - SPECIFICATIONS

PROGRAMMING SPECIFICATIONS

Subscriber
Attributes

Format Attributes

Communications

Paging Options

Station ID

- Programmable individually or by range:
Capcode
Function digit
Validation
Format assignment

Numeric/Alpha assignment
Tone only restriction
Message required restriction

Priority page

- Eight programmable format entries

Signaling format assignment
Maximum message length

Alternate data transmission rate

- Parity (does not apply to serial port)

- Baud rate 300, 1200, 2400, 4800, or 9600

- Timeout enable/disable

- Batch period (0 - 2550 seconds)

- Numeric message formatting en/disable (for Golay)

- Enable/disable

- 15- or 30-minute interval

- 8-character call sign

Station Attributes

Passwords

- Channel busy input polarity

- Terminal busy input polarity

- Hold request input polarity

- Digital data output polarity

- Digital mode output polarity

- Relay inhibit flag (for testing)

- Channel busy time (0 - 25.5 seconds)

- Request hold time (0 - 25.5 seconds)

- Request grant time (0 - 25.5 seconds)

- Key up delay time (0 - 25.5 seconds)

- Remote control enable/disable

- Remote control HLGT time (120 - 2220 ms)

- Programmable four-character Security code
for paging access, may be disabled

- Programmable four-character Program Access code

for programming access

2-2

ELECTRICAL SPECIFICATIONS

SECTION 2 - SPECIFICATIONS

Digital Data

Push-to-Talk

Channel Busy

Terminal Busy

Request to Transmit -

ENVIR9NMENTAL REQUIREMENTS

Power Supply - 120/240 VAC wall transformer

Output for binary paging data
RS-232C: > ±5 V into 3000 ohms
Accuracy and stability ±1 microsecond per bit period
dithered to provide better than 62.5 ms per averaged
bit period.

Output for transmitter keying
SPDT relay rated 0.5 A at 150 VDC

Input for transmit inhibit due to unavailable radio
channel
Relay closure or TTL level signal

Input for transmit inhibit due to unavailable
transmitter (for multiple terminal sharing)
Relay closure or TTL level signal

Output for transmitter sharing/cross busy
RS-232C = > ±5 V into 3000 ohms

or +12 VDC, 700 mA

- Internally fused

Operating Temp - 0 to +65 “Celsius

Physical

- Stand-alone version

2.25" H x 8" W x 10.5" D

- 2 lb.

2-3

3. BASIC OPERATION

Power up

Startup message .................................................. 3-1

Reset

Idle

Computer serial I/O answer ....................................... 3-2

Computer serial disconnect ...................................... 3-2

Computer access

Computer logon ................................................... 3-3

Operating mode selection flowchart

Batching

Transmit

Request

Inhibits

.........................................................

............................................................

.............................................................

.................................................

........................

.........................................................

.........................................................

..........................................................

.........................................................

3-4

3-1

3-1

3-2

3-2

3-5

3-5

3-5

3-6

Keying

Paging

Station ID ....................................................... 3-7

Remote Control ................................................... 3-7

Transmission flowchart ........................................... 3-8

...........................................................

...........................................................

3-6

3-6

SECTION 3 - BASIC OPERATION

The Basic Operation of the Model 16 Alphanumeric Paging Terminal can be
divided into three sections, the first to describe the overall operation of
the unit, including Connect, Disconnect, and Paging Transmission, and one
to address both of the basic Paging modes. The Programming mode is
discussed separately in Section 4.

SECTION TITLE

ЗА Keyboard Paging (Non-Automated)
3B Data Entry Device Paging (Automated)

POWER UP

Several things happen when power is applied to the Model 16. First of all
the "Power" LED on the front panel will light. The PTT relay will be in the
normally closed position, and the Request to Transmit output will be off.

The Model 16 will perform a verification test on the 'battery backed

programming memory' and reinitialize it, if necessary. At the completion of
Power Up, a Startup Message is displayed on the screen of any CRT or

terminal that may be connected to the serial computer port.

STARTUP MESSAGE

-- M16 Alpha Terminal VI.01 -- 11/03/91

Copyright (C) 1991 Zetron, Inc.

( CR to get ID prompt )

(M) for User Paging Mode
(C) for Full Capcode Paging Mode
(P) for Programming and test

RESET

The Reset operation is performed every time that the Model 16 powers up, or

whenever a low power condition is detected such as might occur during a

"brown out". Reset involves initializing all the hardware and then
performing software initialization. When a Reset occurs, the Model 16
clears its Paging Batch buffers, the Startup Message is displayed, and the
Paging Terminal enters the Idle state.

*************** NOTE ********************
* *

* Although shown throughout this manual, user programming and paging *
* is available only if the Model 16 is equipped with the user *
* database option. *

* *

**************************************

3-1

SECTION 3 - BASIC OPERATION

IDLE

In the Idle state, the Paging Terminal is waiting for a request to connect.

The Terminal is not really idle because it is performing a number of jobs.

It is also monitoring the CRT port for user activity. It may also be

paging.

The Terminal is constantly monitoring its Paging Batches so that whenever
the batching period for one of them has expired, that Paging Batch will be
sent to the transmitter. This particular monitoring operation is the most

important job in the Terminal and continues at all times, whether the
Terminal is in the Idle state or actively interfacing over the computer
serial port.

A request to connect occurs when a CR (Carriage Return) key is input to the

computer serial port. CR is used to request Logon.

COMPUTER SERIAL I/O ANSWER

Once the Paging Terminal determines that it will be operating by data
transfer through the Computer Serial I/O port, it prints the inquiry "ID=".

The caller can then select which operating mode is wanted by typing the ID

character or character string and entering it with CR.

COMPUTER SERIAL DISCONNECT

The Paging Terminal will remain in the selected operating mode until the
Caller leaves that mode or until a timeout occurs. As for Line Disconnect,
the Computer Serial Disconnect is orderly and includes a good bye message
and a sum-check of the Programming memory values if exiting from

Programming mode.

The Caller can exit from the manually operated modes by typing a 'CR' at
the top level prompt. The automated modes terminate when the Paging
Terminal receives an 'EOT' character.

The Paging Terminal can be programmed to ignore timeouts when it is
operating via the Computer Serial port. The operator will not have to
repeat the Logon procedure each time the Terminal is left unattended.

COMPUTER ACCESS

Computer Serial I/O Connection: A CRT terminal or personal computer
equipped with a serial I/O port can attach directly to the Model 16. This

is the preferred access whenever the Operator Station can be located near

the site of the Paging Terminal.

3-2

SECTION 3 - BASIC OPERATION

COMPUTER LOGON

The Logon procedure establishes contact between the Model 16 and the
accessing device. In three steps the accessing device requests attention,
the Model 16 complies and inquires as to device's identity, and the device
responds.

The general Logon proceeds as follows:

ACCESSING DEVICE PAGING TERMINAL COMMENTS

"<CR>" Accessing device requests attention

"ID=" Paging Terminal grants attention,

inquires of Device Identity

"<identity>" Device Identity

Where <identity> is one of the five shown below:

OPERATING MODE DEVICE IDENTITY

Programming
User Database Paging
Full Capcode Paging
User Database

Automated Paging

Full Capcode

Automated Paging

Legend: " " quotes are not actually typed

All letters are Upper Case

<CR> means the Carriage Return key (the ASCII character hex D)
<ESC> means Escape (the ASCII character hex IB)

P<CR>
M<CR>
C<CR>
<ESC>PG1<CR>

<ESC>PG8<CR>

3-3

SECTION 3 - BASIC OPERATION

OPERATING MODE SELECTION FLOWCHART

1. Idle, wait for request to Connect
CR key received at serial computer port?

--> LOGON

LOGON:

2. Wait up to 10 seconds for CR key.

3. Print "ID=".

4. Wait up to 10 seconds for ID character(s) + CR.

ID=

P --> PROGRAMMING (Section 4)
M --> USER DATABASE PAGING (Section ЗА)
C --> FULL CAPCODE PAGING (Section ЗА)
<ESC>PG1 --> USER DATABASE AUTOMATED PAGING (Section 3B)
<ESC>PG8 --> FULL CAPCODE AUTOMATED PAGING (Section 3B)

3-4

SECTION 3 - BASIC OPERATION

BATCHING

As each page request is received by the Model 16 it can be transmitted

immediately or it can be stored and held for a period of time. There are
advantages to both methods but for the Terminal to be able to perform
either operation it needs a means to store and transmit a large number of
pages efficiently. This requirement is met by the Batching capability of
the POCSAG and Motorola Golay Paging Formats.

A Batched paging transmission is constructed to use the least amount of

air-time possible so that paging throughput is maximized. At the same time

it maintains a structure that permits battery saving operation in the
pagers. An individual page transmission requires a Preamble code, which
contains no information but assists in battery saving operation, and the
actual paging data, which alerts the pager and supplies the display mes
sage, etc.. The Batched transmission makes it possible to transmit a
single Preamble which may be followed by data for a number of different
pagers. The savings in air-time becomes evident in a high throughput system

when the Preamble, which is about a second in length, does not need to be

repeated for each successive page.

To make it possible for the Model 16 to be simultaneously accepting pages
and transmitting others, there are a number of Batching spaces available.

In this way the Terminal can be transmitting the information from one Batch

space while accumulating pages into others. In addition, there is a timer
and a Priority marker for each Batch space. The timer is set to the
Programmed Batch interval when the first page is placed into the Batch.
When the timer has expired the information in the Batch will be

transmitted. The Batch can be sent before the timer expires if the Priority
marker is set. Any priority page placed into the Batch sets the Priority
marker.

TRANSMIT

Paging data transmission from the Model 16 occurs independently from the

reception of page requests. The Transmission sequence begins whenever a

Batch is ready to transmit: either its timer is expired or a priority page

has been placed into it.

REQUEST

To ensure that the Model 16 and another paging terminal, both sharing a

single transmitter, do not try to key up simultaneously, the Model 16

issues a Request to Transmit (RTT) signal when it is ready to start a

Transmission sequence. The signal should be connected to the Terminal Busy

input, if available, of the sharing terminal. The signal might also go to
the Channel Busy input. The programmable Request Hold time defines a period
after RTT is asserted before PTT may activate and is in addition to the
Channel Busy time, if any busy inhibits are asserted.

3-5

SECTION 3 - BASIC OPERATION

The purpose of the RTT signal is to inhibit the sharing terminal when the

Model 16 wants to transmit. If the sharing terminal is transmitting when

the Model 16 asserts RTT, it can finish as normal and the Model 16 will

wait. When it finishes, it is inhibited from keying up again and the Model

16 takes control of the transmitter.

If both terminals want to transmit but are inhibited by a busy radio
channel, the RTT signal serves to prevent a race for key-up. As soon as the
busy channel inhibit clears, the Model 16 will take control because its RTT

is still providing a busy inhibit to the sharing terminal.

INHIBITS

Two inputs are constantly monitored to determine whether the Terminal will
be able to gain control of the transmitter and key it to broadcast. The
Channel Busy input indicates when the radio channel is available. The
Terminal Busy input indicates when another paging terminal has control of
the transmitter. If either input is asserted the front panel "Busy" LED

lights and the Model 16 will be prevented from keying PTT. As soon as BOTH
inputs are cleared, the Terminal extinguishes the "Busy" light and starts a

timer for the period of the programmed Channel Busy time. Only if both

inputs remain clear for the full period will the Terminal be able to key

up. If either input is asserted during the Channel Busy time the "Busy"
light is relit and the timer is started over.

KEYING

The Keying operation consists of setting the relays to their appropriate
positions and lighting the "Transmit" LED. The Push to Talk (PTT) relay
switches to the closed position and provides the signal to turn the
transmitter on.

Also included within the PTT relay is a set of contact to isolate the
digital data output line if need for transmitter sharing.

The Key Up Delay time is a programmable value that determines the length of
the pause between PTT activation and the transmission of paging data. The
Key Up Delay gives the transmitter any needed time to come up to power.

PAGING

It is during the Paging operation that the actual digital paging

information is sent. The Terminal transmits each Batch that is ready to

send and a voice page, if there is one waiting.

3-6

SECTION 3 - BASIC OPERATION

STATION ID

The Station ID option functions so that the Тегт1пА1~гцШша4ДсаДЗ-У identi-
fies~Tts eTf e v e r y ”T5 °r 30 minutes. The Station ID is sent as Morse Code

audio at 25"words per'minute'ГТТтёГcall sign, up to 8 characters, may

consist of letters A-Z or numbers 0-9. Through programming, the Station ID
may be enabled or disabled, the period selected, and the call sign set.

Several circumstances determine when the Station ID will be transmitted.
First, it must be enabled and the period since the last ID must have
expired. Next, the Terminal must already have keyed the transmitter to do
paging; the Terminal will not key up just to transmit the Station ID.
Finally, the ID is sent after the paging data so that no page is delayed by
the ID transmission.

REMOTE CONTROL

The remote control interface consists of an ASIC programmed for remote
control tone and modem tone generation. The tones are started immediately
following activation of the PTT relay. These tones appear at the TX AUD
HI and TX AUD L0 outputs. When the Model 16 is programmed for remote

control operation, the duration for the High Level Guard Tone (HLGT) is

programmed to accommodate the number of control links involved for the
site. The HLGT duration is programmed as a number of link delays (1 - 7) and

is calculated as follows: 120 ms for the first link delay, and 300 ms is

added for each additional link delay.

3-7

SECTION 3 - BASIC OPERATION

TRANSMISSION FLOWCHART

REQUEST:

1. Activate the Request to Transmit output.
Wait the programmed Request Hold Time.

INHIBITS:

2. Wait until both the Channel Busy and Terminal Busy inputs have
been clear for the programmed Channel Busy Time.

KEYING:

3. Is the Transmitter already Keyed?

: Yes --> PAGE

4. Is the Terminal programmed to Inhibit Transmit Relay?

: Yes --> Step 6
: No - Close PTT Relay.

5. Is the Terminal programmed for Remote Control?

: Yes --> Turn on HLGT

Wait programmed time
Turn off HLGT
Turn on FI tone
Set keyup delay to 250 ms

6. Wait the programmed Key Up Delay Time.

PAGE:

7. Send digital paging data.

GRANT:

8. Is the Hold Request input asserted?
: Yes --> END

REPAGE

9. Is another Batch ready to transmit?
: Yes --> KEYING

END:

10. Is Station ID required and timer expired?
: Yes - Set Digital Mode output to level for Audio data.

Turn off "Digital" LED.
Wait 50 milliseconds.
Transmit Morse code Station ID.

11. Is Terminal programmed to Inhibit Transmit Relays?
: Yes --> Step 12
: No - Open PTT relay.

12. Turn off the "Transmit" LED.

13. Was the Transmitter Granted to another Terminal?
: Yes - Wait for Request Grant Time.

--> REPAGE

3-8

ЗА. KEYBOARD PAGING

Keyboard paging mode ............................................. 3A-1

Logon

Timeouts

User database paging ............................................. 3A-1

User number

Message

Example

Full capcode paging .............................................. 3A-3

Format

Capcode

Function

Message

Alpha (y/n)?

Page now (y/n)? .................................................. 3A-4

............................................................

.........................................................

.........

..........................................................

..........................................................

...........................................................

..........................................................

.........................................................

..........................................................

.....................................................

3A-1

3A-1

3A-1

3A-2

3A-3

3A-3

3A-3

3A-4

3A-4

3A-4

Acceptance

.......................................................

3A-5

SECTION ЗА - KEYBOARD PAGING

KEYBOARD PAGING MODE

Keyboard Paging on the Model 16 is a simple question and response type
method for manually paging from a computer keyboard. There are actually two

variations of Keyboard Paging that can be used. The User Database Paging
mode is the complement of the Overdial Paging mode since it allows the
Operator to place pages to any of the subscribers stored in the User
Database. This mode is the most convenient for an actual paging operation
because the only inputs required are the User Number and the Message -
everything else being already stored in the User record.

The other Keyboard Paging variation, Full Capcode paging, is flexible
enough to permit signaling of any pager in the system. While flexible, it

is not as easy to use as the User Database mode because of the number of
questions that must be answered. Full Capcode Paging is intended as an aid
to Installation or for pager testing.

LOGON

The Logon procedure is described in "Section 3 - Operation." Select either
the User Database or the Full Capcode identity strings.

TIMEOUTS

While in Keyboard Paging operation, the Terminal starts a 30-second timer
whenever it is waiting for key input. If no keys are received in that time
the Terminal will Disconnect. The Timeout may be disabled through
programming.

USER DATABASE PAGING

* * * * * * * * * * * * * * * note ********************

* *

* This Paging mode requires the user database option. *

* *

**************************************

In this Paging mode, the Operator can page any validated User in the Paging

Terminal. Operation is simple because there are only three prompts to

follow and no special codes or instructions to remember.

Enter "M" and CR at the "ID=" prompt. If the Security is Enabled, enter the
four character code and CR when prompted for it.

-- User Paging Mode --

Users 0 - 1199 , (CR for none)
User

3A-1

SECTION ЗА - KEYBOARD PAGING

USER NUMBER

Once in the User Paging mode, the permissible User Number range is always
displayed on one line and the input prompt is displayed on the next. Type
the number of the User to be paged. Leading zeros are not necessary. Enter
the Number by typing the CR key.

To leave the User Paging mode type CR without entering a Number. The
Terminal will respond by saying goodbye and returning to Idle State.

MESSAGE

The Message prompt asks for a numeric or for an alphanumeric message,
depending on how the User has been programmed. Message input will be
accepted up to the maximum length allowed by the Paging Format assigned to
the User. The CR key enters the message when it is ready. If no message is
entered, the Terminal will send a Tone Only page.

Numeric messages may consist of numbers and a few special characters,
depending on the type of pager.

PAGER TYPE NUMERIC CHARACTER SET

Golay Numeric 0123456789 # E U - (space)

РОСSAG Numeric 0123456789 [ ] U - (space)

The Numeric Msg Formatting programming option (See Section 4A), when

Enabled, will automatically insert spaces and - (dashes) to Golay Numeric
messages so that they will appear as telephone numbers on the pager
display. If the Operator punctuates the message, the Terminal will
recognize it and not attempt to reformat it.

Example:

As Input to Terminal As Received by Pager

6441300

12065551212
1234
206 644-1300

Alphanumeric messages can be almost as creative as the imagination (and the
pager capability) allow. Most P0CSAG type pagers will display both upper
and lower case letters. Motorola Golay pagers will display only upper case
but the Operator may type the message in either upper or lower case
letters.

644-1300

1 206 555-1212
1234

206 644-1300

3A-2