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Users manual part 1

Gold Line GL-T8500-CN/GL-T8600-CN System Rev. F: 11/09/98

Specifications subject to change without notice

any means—graphic, electronic, or mechanical, including photocopying, recording,

taping, or information-retrieval system—without written permission of Glenayre.

Gold Line GL-T8500-CN/

GL-T8600-CN System

USER MANUAL

PN 9110.00163 (old part number = 916-8A00-001)

REV F

RELEASED

Gold Line GL-T8500-CN/GL-T8600-CN System Glenayre Document Number: 9110.00163

Document Change Record Rev. F: 11/09/98

Document Change Record

Revision: A

Date: 05/25/95

Changes: new format

Issue: Revision B

Date: 10/17/95

Changes: Wording Section 4.1.2, 7 inches required between cabinets.

Issue: Rev. C

Date: 02/01/96

Changes: new format

Issue: Rev D

Date: 07/09/96

Changes: made released

Issue: Rev E

Date: 02/20/97

Changes: changed rackup in Figures 1-3, 1-6, 3-5, 3-6, 3-7, and 3-8

Issue: Rev F

Date: 11/09/98

Changes: changed simplified block diagram to include GL-T8500-CN/GL-T8600-CN

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev F 11/09/98 Table of Contents

sec_1.toc

Table of Contents

1 GENERAL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.1 Manual Scope . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.2 Applicable Documents. . . . . . . . . . . . . . . . . . . . . 1-1

1.3 Manual Sections . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.4 Hardware Identification . . . . . . . . . . . . . . . . . . . . 1-2

2 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . 2-1

3 DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.2 Physical Description. . . . . . . . . . . . . . . . . . . . . . 3-1

3.2.1 Exciter / PA Control Unit . . . . . . . . . . . . . . . . . . . . . .3-2

3.2.2 Power Amplifier (PA). . . . . . . . . . . . . . . . . . . . . . . .3-2

3.2.3 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-2

3.2.4 Transmitter Controller . . . . . . . . . . . . . . . . . . . . . . .3-3

3.2.5 Link Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

3.2.6 Video Display Terminal (VDT). . . . . . . . . . . . . . . . . . .3-3

3.2.7 Rack Cabinet . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

3.3 Simplified Functional Description . . . . . . . . . . . . . . . . 3-3

3.3.1 Paging Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3

3.3.2 Paging Site Control . . . . . . . . . . . . . . . . . . . . . . . . .3-4

3.3.3 Link Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-4

3.3.4 Video Display Terminal. . . . . . . . . . . . . . . . . . . . . . .3-4

3.3.5 Interface I/O Board . . . . . . . . . . . . . . . . . . . . . . . . .3-4

4 INSTALLATION AND SETUP . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.1 Installation . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.1.1 Tools and Equipment Required . . . . . . . . . . . . . . . . . . .4-1

4.1.2 Rack Positioning . . . . . . . . . . . . . . . . . . . . . . . . . .4-1

4.1.3 Rack Grounding. . . . . . . . . . . . . . . . . . . . . . . . . . .4-2

4.1.4 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2

4.1.5 Primary Power Requirements . . . . . . . . . . . . . . . . . . . .4-2

4.1.6 Equipment Cabling . . . . . . . . . . . . . . . . . . . . . . . . .4-3

4.1.7 Dc Only Sites . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3

4.1.8 System Connectors . . . . . . . . . . . . . . . . . . . . . . . . .4-3

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

Table of Contents Rev F 11/09/98

4.2 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4.2.1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4.2.2 Setup Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

5 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.1.1 Precautions and Hazards . . . . . . . . . . . . . . . . . . . . . . 5-1

5.2 Local Operation . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.3 Front Panels Controls and Indicators . . . . . . . . . . . . . . . 5-1

5.3.1 Exciter/PA Control Unit . . . . . . . . . . . . . . . . . . . . . . 5-1

5.3.2 Power Amplifier (PA) . . . . . . . . . . . . . . . . . . . . . . . 5-2

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

5.3.4 Transmitter Controller . . . . . . . . . . . . . . . . . . . . . . . 5-2

5.3.5 Link Receiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

5.4 Front-Panel Operations . . . . . . . . . . . . . . . . . . . . 5-3

5.4.1 Resetting the Transmitter Controller . . . . . . . . . . . . . . . . 5-3

5.4.2 Receiver Power Control . . . . . . . . . . . . . . . . . . . . . . 5-3

5.4.3 Receiver Audio Monitoring Level . . . . . . . . . . . . . . . . . 5-3

5.4.4 Receiver Squelch Setting . . . . . . . . . . . . . . . . . . . . . . 5-3

5.4.5 Receiver Key Options Setting . . . . . . . . . . . . . . . . . . . 5-3

6 THEORY OF OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.2 Simplified Functional Descriptions . . . . . . . . . . . . . . . 6-1

6.2.1 Paging Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.2.2 Paging Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.2.3 Exciter / PA Control Unit. . . . . . . . . . . . . . . . . . . . . . 6-1

6.2.4 Power Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6.2.5 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6.2.6 Link Receiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6.2.7 Video Display Terminal . . . . . . . . . . . . . . . . . . . . . . 6-2

6.3 Site Signal Flows . . . . . . . . . . . . . . . . . . . . . . 6-2

6.3.1 Site RF Signal Flow . . . . . . . . . . . . . . . . . . . . . . . . 6-2

6.3.2 Site Audio Signal Flow . . . . . . . . . . . . . . . . . . . . . . . 6-3

6.3.3 Site Control Signal Flow . . . . . . . . . . . . . . . . . . . . . . 6-3

6.3.4 Status Signal Flow . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

6.4 Site Signals . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev F 11/09/98 Table of Contents

sec_1.toc

7 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

7.2 Maintenance Procedures . . . . . . . . . . . . . . . . . . . . 7-1

7.2.1 PA Current Check. . . . . . . . . . . . . . . . . . . . . . . . . .7-1

7.2.2 Dc Ripple Check . . . . . . . . . . . . . . . . . . . . . . . . . .7-1

7.2.3 Audio Level Check (QT-1000 only) . . . . . . . . . . . . . . . .7-2

7.2.4 VDT Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . .7-2

8 CHECKOUT AND TROUBLESHOOTING . . . . . . . . . . . . . . . . . . 8-1

8.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.2 Checkout Procedures . . . . . . . . . . . . . . . . . . . . . 8-1

8.2.1 Dc Voltage Verification. . . . . . . . . . . . . . . . . . . . . . .8-1

8.2.2 VDT Power-up Verification . . . . . . . . . . . . . . . . . . . .8-1

8.2.3 Cooling Fans Check. . . . . . . . . . . . . . . . . . . . . . . . .8-1

8.3 Troubleshooting Procedures. . . . . . . . . . . . . . . . . . . 8-1

9 REMOVAL AND REINSTALLATION. . . . . . . . . . . . . . . . . . . . . 8-1

9.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

9.2 Required Tools . . . . . . . . . . . . . . . . . . . . . . . . 8-1

9.3 Removal . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

9.4 Reinstallation . . . . . . . . . . . . . . . . . . . . . . . . 8-1

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

Table of Contents Rev F 11/09/98

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev F 11/09/98 List of Figures

sec_1.lof

List of Figures

Figure 1-1 GL-T8500 Transmitter Isometric Front View . . . . . . . . . . . . . . 1-3

Figure 1-2 GL-T8600 Transmitter Isometric Front View . . . . . . . . . . . . . . 1-4

Figure 1-3 GL-T8500 Transmitter (W/C2000) . . . . . . . . . . . . . . . . . . . . 1-5

Figure 1-4 GL-T8600 Transmitter (W/C2000) . . . . . . . . . . . . . . . . . . . . 1-6

Figure 3-1 Gold Line GL-T8500 Paging Site Front View Without Receiver . . . . 3-5

Figure 3-2 GL-T8500 Paging Site Back View With Receiver . . . . . . . . . . . . 3-6

Figure 3-3 Gold Line GL-T8600 Paging Site Front View Without Receiver . . . . 3-7

Figure 3-4 Gold Line GL-T8600 Paging Site Back View With Receiver . . . . . . 3-8

Figure 3-5 GL-T8500 Rackup (w/C2000) . . . . . . . . . . . . . . . . . . . . . . 3-9

Figure 3-6 GL-T8500 Transmitter Back View (w/C2000) . . . . . . . . . . . . . .3-10

Figure 3-7 GL-T8600 Rackup (w/C2000) . . . . . . . . . . . . . . . . . . . . . .3-11

Figure 3-8 GL-T8600 Transmitter Back View (w/C2000) . . . . . . . . . . . . . .3-12

Figure 3-9 GL-T8500/8600 Simplified Block Diagram . . . . . . . . . . . . . . .3-13

Figure 4-1 Site Installation Diagram . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

Figure 4-2 Site Dc Connection Diagram (w/QT-1000). . . . . . . . . . . . . . . .4-10

Figure 4-3 Site Interconnect Diagram (w/QT-1000) . . . . . . . . . . . . . . . . .4-11

Figure 4-4 Site Dc Connection Diagram (w/C2000) . . . . . . . . . . . . . . . . .4-12

Figure 4-5 Site Interconnect Diagram (w/C2000) . . . . . . . . . . . . . . . . . .4-13

Figure 6-1 Paging Network Signal Diagram (w/QT-1000). . . . . . . . . . . . . . 6-4

Figure 6-2 Paging Network Signal Diagram (w/C2000) . . . . . . . . . . . . . . . 6-5

Figure 6-3 Site Signal-Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . 6-6

Figure 6-4 Site Signals Diagram (w/QT-1000). . . . . . . . . . . . . . . . . . . . 6-8

Figure 6-5 Site Signal Diagram (w/C2000) . . . . . . . . . . . . . . . . . . . . .6-10

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

List of Figures Rev F 11/09/98

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev F 11/09/98 Table of Contents

sec_1.lot

Table of Contents

Table 1-1 Applicable Documents . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

Table 1-2 Manual Sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2

Table 2-1 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2

Table 3-1 Site Equipment List . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

Table 4-1 Required Tools and Equipment. . . . . . . . . . . . . . . . . . . . . . 4-1

Table 4-2 Power Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

Table 4-3 Equipment Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

Table of Contents Rev F 11/09/98

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev. F: 11/09/98 GENERAL

sec_1

1 GENERAL

1.1 Manual Scope

This manual presents the Gold Line GL-T8500 (250W) and GL-T8600 (500W) transmit-

ters, which operate in the 900-MHz range. It includes the QT-1000 interface board with an

interface I/O board. Other paging site equipment is included as listed below.

• transmitter controller

• receiver

• video display terminal (VDT)

• equipment racks

1.2 Applicable Documents

This manual is incomplete without additional manuals. Refer to Table 1-1 for a list of

applicable documents, their part numbers, and a brief description of each.

1.3 Manual Sections

Refer to Table 1-2. This table lists the sections in this manual, and provides a brief descrip-

tion of the content of each section.

Table 1-1 Applicable Documents

document part number description

QT-1000 transmitter

controller manuals IBPHASE3 describes installation, setup, and operation

of QT-1000 control system

GL-T8500/8600 system

manual 9110.00163 this document

GL-T8500/8600 VDT

manual 9110.00164 describes 250/500-W, 900-MHz Gold Line

VDT software operation

exciter / PA control man-

ual 9110.00172 describes exciter/PA control equipment

with interfaces

GL-T8500 power ampli-

fier manual 9110.00160 describes 250-W, 900 MHz Gold Line

power amplifier

GL-T8600 power ampli-

fier manual 9110.00162 describes 500-W, 900 MHz Gold Line

power amplifier

Gold Line power supply

manual 9110.00159 describes 55A/90A Gold Line power

supply equipment

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

GENERAL Rev. F: 11/09/98

1.4 Hardware Identification

Refer to Figure 1-1 and Figure 1-2. These show the GL-T8500 and 8600 transmitters with

a QT-1000 transmitter controller and an RL-903 link receiver, for equipment identification.

Also, refer to Figure 1-3 and Figure 1-4. These show the GL-T8500 and 8600 transmitters

with a C2000 transmitter controller and an RL-903 link receiver, for equipment

identification.

Table 1-2 Manual Sections

section contents

1. General contains scope and content of this entire manual and lists

other applicable documents to supplement this manual

2. Specifications contains overall and selected equipment specifications, and

those not given in other equipment manuals

3. Description contains overall physical and functional equipment descrip-

tions

4. Installation & Setup contains relevant equipment installation information and

setup procedures

5. Site Operation contains overall description of site operation using VDT

menu based commands and procedures

6. Theory of Operation contains overall block-diagram level theory of operation for

equipment listed in paragraph 1.1 above as it functions as a

unit

7. Maintenance contains necessary maintenance procedures which keep site

operating within specified parameters

8. Checkout and Trouble-

shooting contains information needed to checkout and troubleshoot

overall equipment performance

9. Removal and Reinstal-

lation contains information needed to remove and reinstall the rack

and equipment contained in it

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev. F: 11/09/98 GENERAL

sec_1

Figure 1-1 GL-T8500 Transmitter Isometric Front View

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

GENERAL Rev. F: 11/09/98

Figure 1-2 GL-T8600 Transmitter Isometric Front View

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev. F: 11/09/98 GENERAL

sec_1

Figure 1-3 GL-T8500 Transmitter (W/C2000)

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

GENERAL Rev. F: 11/09/98

Figure 1-4 GL-T8600 Transmitter (W/C2000)

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev. F: 11/09/98 SPECIFICATIONS

sec_2

2 SPECIFICATIONS

2.1 Introduction

Specifications given in this section pertain to the equipment described in section three of

this manual. Additional equipment specifications are given in the individual equipment

user manuals. Test and measurement equipment is calibrated in accordance with standards

established by the National Institute of Standards and Technology (NIST).

2.2 Specifications

Refer to Table 2-1.

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

SPECIFICATIONS Rev. F: 11/09/98

Table 2-1 Specifications

characteristic condition specification

Electrical

ac input voltage 50/60 Hz GL-T8500, 120/100 or 220/200 Vac

50/60 Hz GL-T8600, 220/200 Vac

ac input load 120V w/tx keyed GL-T8500, 12-17 A

220V w/tx keyed GL-T8500, 6-10 A

GL-T8600, 12-17 A

dc input voltage see ripple spec 23-28 Vdc, full load-no load

dc input load see ripple spec GL-T8500, 35-50 A @ 25 Vdc

see ripple spec GL-T8600, 70-90 A @ 25 Vdc

dc input ripple up to 120 Hz

over 120 Hz 1.5 Vp-p max

50 mVp-p max

audio input balanced 600 ohm -30 to +10 dBm; refer to exciter manual

RF output continuous duty op-

erating range GL-T8500, 100-300W (sing. circ. out)

GL-T8600, 200-600W (sing. circ. out)

GL-T8600, 200-550W (trip. circ. out)

Physical and Environmental

dimensions 72I cabinet H:W:D 72.6 in: 23 in: 24 in

180 cm: 58 cm: 60 cm

weights 72I cabinet empty approx 210 lb (462 kg)

maximum operating

elevation continuous operation

at rated power 10,000 ft or

3050 m (see temperature derating factor)

temperature range operating

storage -30 to +60 degrees C

-55 to +70 degrees C

temperature derat-

ing factor above 5000 ft or

above 1525 m 2 degrees C per 1000 ft or

2 degrees C per 305 m

humidity operating 0-95 % RH noncondensing

certification FCC identifiers GL-T8500: BFLGL-T8500

GL-T8600: BFLGL-T8600

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev. F: 11/09/98 DESCRIPTION

sec_3

3 DESCRIPTION

3.1 Introduction

The Gold Line GL-T8500 and GL-T8600 paging site is generally just one of several sites

in the larger paging network. Equipment and options that comprise a particular site may

vary depending on paging system requirements. Paging site operating characteristics are

determined by hardware options and controlling software features.

Note the distinction between the paging site and the paging transmitter. A GL-T8500 or

GL-T8600 paging site consists of a Gold Line paging transmitter, a receiver (non-wireline

applications), and a transmitter controller. A paging transmitter consists of an exciter, a

power amplifier, and a power supply. The receiver and transmitter controller provide

support functions for the paging transmitter which allows it to function as a part of a larger

paging network.

The purpose of a paging transmitter is to modulate a specific RF carrier channel with

paging information and amplify it for broadcast. The paging transmitter cannot function in

a paging network without the other site equipment. The purpose of a paging site is to

broadcast paging information on a specific channel (frequency) at a specific time. Paging

site equipment is racked together for practical and functional reasons. The paging site

broadcasts paging information in response to commands from the paging terminal. All of

the paging site equipment is usually part of a larger paging network, which is typically

comprised of several paging sites.

3.2 Physical Description

Refer to Figure 3-1 and Figure 3-2, for equipment names, identifying features, and

equipment racking order. Refer to Table 3-1, for equipment part numbers, and brief descrip-

tions. Refer to Figure 3-3 and Figure 3-4, for connector names and locations. Refer to the

individual equipment user manuals for more information.

Refer to Figure 3-5, Figure 3-6, Figure 3-7, and Figure 3-8. These provide similar infor-

mation as those listed above but feature the C2000 transmitter controller.

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

DESCRIPTION Rev. F: 11/09/98

3.2.1 Exciter / PA Control Unit

The Gold Line exciter/ PA control unit is one rack unit high. It is racked where shown and

is held in place with four machine screws. The top cover is removable for access to subas-

semblies, jumpers, and adjustments contained in the unit. All but one of its connectors are

on the back of the unit. The front of this unit has a connector which allows the VDT to be

connected to it.

3.2.2 Power Amplifier (PA)

The Gold Line PA is normally installed above the power supply and is held in place with

several machine screws. By removing the front cover, internal components and subassem-

blies can be accessed without removing the PA from the rack. All PA I/O connections are

made from the back. Each power amplifier is equipped with an RF circulator mounted on

the PA heatsink.

3.2.3 Power Supply

The Gold Line power supply is supported by a shelf that is mounted to the bottom of the

rack and is held in place by several machine screws along the bottom front. The perf panel

on the supply front is for cooling ventilation; do not obstruct it. Some components can be

accessed by removing the perf panel; to access others, the supply must be removed from

the rack. All interconnections are made at the back where the connectors are accessible. A

connector-ended cable inside the supply allows quick disconnection from the equipment

rack wiring harness.

Table 3-1 Site Equipment List

equipment part number function

power supply

55 A version

90 A version 265-0082-012

265-0082-006

provides dc to site equipment

power amplifier

GL-T8500

GL-T8600 265-0082-013

265-0082-005

amplifies 900 MHz RF for broadcast

exciter/PA

control unit refer to exciter manual generates then modulates RF; controls PA

I/O activities

link receiver

(RL-903) 265-00301-xxx, see re-

ceiver manual for con-

figurations & part No.

receives data and commands from the

system controller

transmitter

controller controls paging transmitter activities;

performs I/O functions for paging site

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev. F: 11/09/98 DESCRIPTION

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3.2.4 Transmitter Controller

The transmitter controller is normally racked at the top. A controller may or may not be

mounted to the rack with slide rails. By loosening the two thumbscrews on the front of the

TXC, the controller slides forward from the rack. By loosening the four top cover thumb-

screws, the top can be removed for access to the subassemblies, jumpers, indicators, and

adjustments contained in the unit. On the back of the transmitter controller are a variety of

connectors which are not all used for any one particular application. When using a QT1000

controller, do not rely on identifiers which are molded in the back of the TXC; use the appli-

cable figures provided in this manual.

3.2.5 Link Receiver

3.2.5.1 RL-903

The receiver is racked below the transmitter controller. By loosening the top cover screws,

the top can be removed for access to the subassemblies, jumpers, and adjustments

contained in the unit. All interconnections to other site equipment are made to connectors

on the back of the receiver. Refer to the receiver user manual for more information.

3.2.6 Video Display Terminal (VDT)

The VDT is required for setup, local control, and monitoring of the Gold Line transmitter.

It is also required for local interrogation of the transmitter controller. The VDT can be any

compatible laptop or desktop computer running a VT-100 emulation program. The VDT

has a brightness and contrast control to accommodate various lighting conditions and

probably has its own power conversion and supply system.

3.2.7 Rack Cabinet

An air plenum covers the back of the power amplifier when the transmitter is installed in a

72-inch rack cabinet; this provides improved cooling. Connectors are accessible with the

air plenum removed.

3.3 Simplified Functional Description

3.3.1 Paging Site

Refer to Figure 3-9, for a block-diagram representation of the paging site equipment.

The paging site receives paging and command information from equipment outside the

paging site through telephone land lines or a link receiver. Incoming information is decoded

by the transmitter controller and sent to the exciter / PA control unit, which uses a micro-

processor to translate received information into useful paging functions. The exciter / PA

control unit generates modulated RF and control signals which are sent to the power ampli-

fier. The PA amplifies and broadcasts the modulated RF .

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DESCRIPTION Rev. F: 11/09/98

The purpose of the exciter/PA control unit is twofold. The exciter section generates a

modulated RF carrier which is applied to the input of the PA. The PA control section

controls and monitors the PA using a microprocessor based system.

3.3.2 Paging Site Control

The Gold Line paging transmitter has divided control functions. Since the power amplifier

has no internal control circuitry, the exciter / PA control unit sends commands to the PA and

receives status information from the PA.

3.3.3 Link Receiver

The link receiver connects the paging site equipment to the off-site paging equipment when

telephone land lines are not used. It receives paging data and commands and forwards that

information to the transmitter controller.

3.3.4 Video Display Terminal

The VDT interfaces the transmitter through the connector on the front of the exciter. Refer

to the VT-100 VDT user manual for screen display details.

3.3.5 Interface I/O Board

The interface board is mounted to the rear of the exciter / PA control unit with four machine

screws. The terminal board and D-sub connector on the interface I/O board provide

identical electrical interface through different physical configurations. Refer to the exciter

/ PA control unit user manual for more information.

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Rev. F: 11/09/98 DESCRIPTION

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Figure 3-1 Gold Line GL-T8500 Paging Site Front View Without Receiver

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

DESCRIPTION Rev. F: 11/09/98

Figure 3-2 GL-T8500 Paging Site Back View With Receiver

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev. F: 11/09/98 DESCRIPTION

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Figure 3-3 Gold Line GL-T8600 Paging Site Front View Without Receiver

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

DESCRIPTION Rev. F: 11/09/98

Figure 3-4 Gold Line GL-T8600 Paging Site Back View With Receiver

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev. F: 11/09/98 DESCRIPTION

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Figure 3-5 GL-T8500 Rackup (w/C2000)

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

DESCRIPTION Rev. F: 11/09/98

Figure 3-6 GL-T8500 Transmitter Back View (w/C2000)

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev. F: 11/09/98 DESCRIPTION

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Figure 3-7 GL-T8600 Rackup (w/C2000)

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

DESCRIPTION Rev. F: 11/09/98

Figure 3-8 GL-T8600 Transmitter Back View (w/C2000)

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev. F: 11/09/98 DESCRIPTION

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Figure 3-9 GL-T8500/8600 and GL-T8500/8600-CN Simplified Block Diagrams

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

DESCRIPTION Rev. F: 11/09/98

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev. F: 11/09/98 INSTALLATION AND SETUP

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4 INSTALLATION AND SETUP

4.1 Installation

Refer to Figure 4-1, for general information.

4.1.1 Tools and Equipment Required

Refer to Table 4-1. Equipment listed by brand name may be substituted with equivalent.

For installation, only common hand tools are necessary if at all, since installation is usually

completed at the factory.

4.1.2 Rack Positioning

Rackup variations are generally not possible. Cooling and cabling restraints require that

equipment pieces remain racked as shown. Detailed descriptions of equipment mounting

and installation procedures are given in the various equipment user manuals.

During normal operation the equipment rack can be placed with its back or top close to

another object since it ventilates through the front and sides. However, to gain reasonable

access to the front or back for maintenance purposes, 30 inches of free space should be

allowed. For ventilation, the front of the rack should have at least ten inches of free space,

and seven inches should be allowed for each side. The cabinet should be placed as close as

possible to the transmitting antenna, and to the primary power source as a secondary

consideration.

Caution

Never place the rack where moisture, steam,

condensation, or standing water, can come in

contact with it. The host room may need to be air

conditioned or additionally ventilated to remove

excess heat generated by this equipment.

Table 4-1 Required Tools and Equipment

nut driver - 5/16”

screw driver - # 3 flat blade

screw driver - #3 Phillips

Bird 4421 RF power meter

Bird 8327 dummy load

barrel connector - type-N

cable - 1 M long (max) with type-N ends

Fluke 77 DVM

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INSTALLATION AND SETUP Rev. F: 11/09/98

4.1.3 Rack Grounding

The rack cabinet must be connected to a reliable earth ground. Connect the earth ground

point to the ground stud provided in the bottom of the cabinet; use four gauge or larger

copper conductor.

4.1.4 Inspection

Inspect the equipment to be certain that the equipment rack is complete. Compare items

received to the packing list. Report shipping loss or damage to carrier within 15 days of

receipt. Remove any packing material from the rack and check each assembly. Pay partic-

ular attention to the power supply; check it closely and remove any foreign material in the

chassis. Be certain to disconnect primary power from the power supply before removing

any equipment covers.

4.1.5 Primary Power Requirements

The primary power source must be capable of delivering adequate power to the equipment.

Refer to Table 4-2. This equipment operates with 60 Hz ac unless the power supply has the

50 Hz option or the dc only option installed. Refer to section 2 of this manual for current

and voltage specifications. Electrical connections made to this equipment must be made in

accordance with local electrical codes.

4.1.5.1 Special Considerations

Various options for the G/L power supply permit operation at different line frequencies and

voltages. The supplied connector allows for these variations. If the supplied connector is

not used, be certain that the correct combination of line frequency and voltage is applied.

The G/L power supply causes a large inrush of current when first turned on. The ac supply

breaker must be able to handle this brief surge.

Table 4-2 Power Requirements

input type transmitter power

required wire size

ac 50/60 Hz GL-T8500 2200 W max 12 gauge

ac 50/60 Hz GL-T8600 3740 W max 12 gauge

dc only GL-T8500 2000 W max 0 gauge

dc only GL-T8600 3540 W max 0 gauge

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Rev. F: 11/09/98 INSTALLATION AND SETUP

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4.1.6 Equipment Cabling

4.1.6.1 Ac Connections

The ac input cable comes fitted with a three-pronged ac connector. A grommeted hole in

the cabinet is recommended for cable throughput. A three-terminal connector block is

mounted inside the air plenum; the power supply input cable is also connected here. The ac

input is fused at CB1 on the front of the power supply. All ac connections internal to the

rack are made at the factory and should not need to be modified.

4.1.6.2 Dc Connections

Refer to Figure 4-2 and Figure 4-4 for more information. This figure shows a GL-T8600

transmitter; connections are the same for the GL-T8500 transmitter.

4.1.6.3 I/O Connections

Refer to Figure 4-3 and Figure 4-5 for more information. This figure shows a GL-T8600

transmitter; connections are the same for the GL-T8500 transmitter.

4.1.7 Dc Only Sites

Some installation do not use ac input power. Usually it is racked and wired at the factory,

but it can be retrofitted. Be sure to connect as shown in the dc only power supply user

manual.

4.1.8 System Connectors

Refer to Table 4-3. This table lists connectors by equipment unit. Connections made to

equipment outside the cabinet are also described below.

To the isolator, connect the transmit antenna coax cable to OUT. Some installations may

also include a lightning protection device between the isolator and antenna. The connector

is typically a type-N and should be securely tightened.

To the receiver (if used), connect the receive antenna coax cable at RF IN. The connector

is typically type-N and should be securely tightened. Some installations include a lightning

protection device between the receiver and antenna.

If used, connect the telephone wireline to the TXC at MODEM IN. Modem specifications

are given in the TXC user manual.

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

INSTALLATION AND SETUP Rev. F: 11/09/98

Note: In the table below, the > symbol is short for “is connected to”.

4.2 Setup

4.2.1 Introduction

This subsection contains setup procedures for the Gold Line transmitter with a TXC. These

procedures are usually performed only once, when the transmitter is initially installed at the

site. This procedure presumes that the equipment has already been factory configured for

the correct RF band, transmitter controller, and oscillator. Refer to the VDT user manual

for more information on these and other procedures.

4.2.2 Setup Procedures

The procedure is divided into separate areas for activation, password setup, channel setup,

digital mode setup, analog mode setup, forward power setup, oscillator calibration, and

preoperational check. Perform each in the order shown. Setup procedures include the

following:

Table 4-3 Equipment Connectors

equipment connector destination

TXC J1 >exc J1:

J2 >exc J2:

J3 not used

J4 > VDT:

J5 > exc J8:

J8/9 > telephone land line:

RX rf in > antenna:

ext ref >

J1 > exc J5 (interface I/O bd):

PA exc io > exc J6:

rf in > exc J3:

rf out > isolator in:

vswr out > exc J7:

iso out > antenna:

EXC connectors listed above not repeated under EXC

J4 > interface i/o bd:

TB2 > (see exc IB):

VT100 > VDT:

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Rev. F: 11/09/98 INSTALLATION AND SETUP

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• equipment power-up

• starting VDT software

•password setup

• channel setup

• forward power setup

• preoperational checks

• paging check

4.2.2.1 Equipment Power-Up

Operating power for racked equipment is regulated by the power supply in the bottom of

the rack. Operating power for the VDT is independent of the power supply.

Transmitter power-up is accomplished by setting the breaker switch on the supply front to

the up position. Also, on the receiver, set front panel switch to on position.VDT power-up

is accomplished by setting the its power switch to the on position. Be sure VDT is properly

connected to primary power.

4.2.2.2 Starting VDT Software (QT-1000 only)

Once the VDT is powered, one of two programs must be running to facilitate communica-

tions with site hardware. This procedure presumes that the proper programs are already

loaded into the computer console. The VDT interacts with the G/L transmitter when the

‘VT-100’ console program runs. The VDT interacts with the QT-1000 controller (TXC)

when the ‘DOS’ console program runs.

Starting the VT-100 console is accomplished by performing the steps in the list below.

• Type 'cd procomm' and enter it.

• Type 'procomm' and enter it.

• As instructed by the VDT, press a key to begin.

• Enter ‘local’ control mode to prevent any remote control interference.

The VT-100 program should now be running. For detailed instructions on operating this

program software, refer to the VDT user manual.

Starting DOS console is accomplished by performing steps in list below.

• Type 'cd console' and enter it.

• Type 'console' and enter it.

• As instructed by the VDT, press a key to begin.

• If necessary, type 'quintron' and enter it at the password query.

• Enter ‘local’ control mode to prevent any remote control interference.

The QT-1000 console program should now be running. For detailed instructions on

operating this program software, refer to the TXC user manual.

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

INSTALLATION AND SETUP Rev. F: 11/09/98

4.2.2.3 Password Setup

To prevent unauthorized tampering, change both frequency and entry passwords. An entry

password should be used in both VT-100 and DOS console programs.

Initiating a password in the DOS console program is accomplished by performing the steps

in the list below.

• Start the DOS console program. (see above).

• Enter ‘console setup’ menu.

• Enter ‘edit passwords’ submenu.

For more details, refer to manual 9110.00028.

Initializing a password in the VT-100 console program is accomplished by performing the

steps in the list below.

• Start the VT-100 console program. (see above).

• When the password query appears, enter ‘abcd’.

• Enter ‘local’ main menu..

• Enter ‘change tx settings’ menu item..

• Enter ‘change frequency password’ submenu. OR

• Enter ‘change / toggle entry password’ submenu.

The VT-100 VDT uses two passwords to provide a higher level of security for entry into

the transmitter channel frequency change area. For more details, refer to the VT-100 user

manual.

4.2.2.4 Channel Setup

On site channel setup is not required if the transmitter was configured at the factory.

Generally all transmitters are setup at the factory. This procedure presumes that the trans-

mitter status has already been checked and the procedure needs to be performed.

Channel setup (frequency settings) is accomplished by performing the steps in the list

below.

• Start the VT-100 console program. (see above).

• Enter ‘local’ main menu.

• Enter ‘change tx settings’ menu item.

• Enter ‘set frequencies’ submenu. This requires password entry.

• Follow screen prompts as given.

For more details, refer to the VT-100 screen displays manual.

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Rev. F: 11/09/98 INSTALLATION AND SETUP

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4.2.2.5 Forward Power Setup

The forward power setup procedures are necessary for all transmitter installations. Proce-

dures include: forward power calibration, forward power adjustment, and alarm level

setting. Before starting, select mode and channel in which the transmitter is to operate.

Forward power calibration is accomplished by performing the ‘forward power calibration

procedure’ given in the MAINTENANCE section of this manual. Refer to that section for

details. Since most transmitters have already been calibrated at the factory and should not

be recalibrated, check calibration status by performing the steps listed below.

• Start the VT-100 console program. (see above).

• Enter ‘local’ main menu.

• Enter ‘view tx status’.

• Enter ‘view faults selection’ submenu. If ‘fwd calib’ is OK, do not do forward power

calibration. If a fault exists, do procedure as described above.

Follow screen prompts as shown.

Forward power adjustment is accomplished by performing the steps in the list below.

• Start the VT-100 console program. (see above).

• Enter ‘local’ main menu.

• Enter ‘change tx settings’.

• Enter ‘adj fwd pwr’ submenu.

Follow screen prompts as shown.

Set power output level to rated transmitter output unless diminished coverage area is

desired.

Alarm level setting is accomplished by performing the steps in the list below.

• Start the VT-100 console program. (see above).

• Enter ‘local’ main menu.

• Enter ‘change tx settings’.

• Enter ‘set low pwr alarm’ submenu.

Follow screen prompts as shown.

4.2.2.6 Preoperational Checks

These checks should be performed before the transmitter is put into paging service.

Transmitter check is accomplished by performing the steps in the list below.

• Start the VT-100 console program. (see above).

• Enter ‘local’ main menu.

• Enter ‘view tx status’.

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INSTALLATION AND SETUP Rev. F: 11/09/98

• Enter ‘view faults selection’ submenu.

• Key transmitter; verify that no faults exist.

Follow screen prompts as shown.

Exciter LED check is accomplished by performing the ‘exciter LED self-test’; refer to VDT

user manual. Verify that all conditions are OK.

4.2.2.7 Paging Check

Paging check is accomplished by performing the steps in the list below. This check should

be performed using at least three pagers. Pagers should be tuned to every on-frequency and

every adjacent frequency.

• Start the VT-100 console program. (see above).

• Enter ‘remote’ main menu.

• Set transmitter mode and channel as required.

• Send page and verify appropriate pager response; repeat for each operating frequency.

• Send page and verify that adjacent channel pagers do not respond; repeat for each

adjacent frequency.

The transmitter setup procedures are completed. Refer to the VDT user manual for more

information on checkout procedures.

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Rev. F: 11/09/98 INSTALLATION AND SETUP

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Figure 4-1 Site Installation Diagram

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

INSTALLATION AND SETUP Rev. F: 11/09/98

Figure 4-2 Site Dc Connection Diagram (w/QT-1000)

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Rev. F: 11/09/98 INSTALLATION AND SETUP

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Figure 4-3 Site Interconnect Diagram (w/QT-1000)

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

INSTALLATION AND SETUP Rev. F: 11/09/98

Figure 4-4 Site Dc Connection Diagram (w/C2000)

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Rev. F: 11/09/98 INSTALLATION AND SETUP

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Figure 4-5 Site Interconnect Diagram (w/C2000)

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

INSTALLATION AND SETUP Rev. F: 11/09/98

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev. F: 11/09/98 OPERATION

sec_5

5 OPERATION

5.1 Introduction

Normally this equipment is operated remotely from the paging terminal. When the trans-

mitter is in the local operating mode. Only very limited operation can be done with front-

panel controls. Front panels controls and indicators are presented below. Refer to the indi-

vidual equipment user manuals for more detailed information.

5.1.1 Precautions and Hazards

WARNING

It is unsafe and counterproductive to operate this

equipment when covers are removed. Remove ac

and dc power before making modifications to any

equipment. Avoid the PA if it is keyed and the PA

front cover is removed. Do not disconnect any RF

connectors while the PA is keyed. During

operation, the lower section of the power supply

front panel gets very hot; do not touch it.

5.2 Local Operation

The Gold Line transmitter is operated using the video display terminal (VDT), which runs

a DEC VT-100 emulating program e.g., ProComm. Refer to the VDT user manual for more

information about local operation using the VDT.

5.3 Front Panels Controls and Indicators

5.3.1 Exciter/PA Control Unit

The front panel contains the controls and indicators listed below.

• VCO ADJ - potentiometer adjusts VCO frequency fine tuning

• DC POWER - LED either not lighted or lights green; green is normal

• FAULT/ALARM - LED lights red or orange; neither is normal

• REMOTE/LOCAL - LED lights green or orange; green is normal

• KEY - LED either not lighted or lights green; either can be normal

• RF OUT/RF LOW - LED lights green or orange; green is normal

• VSWR - LED either not lighted or lights red; not lighted is normal

• DIGITAL/ANALOG - LED lights green or orange; either is normal

• MODULATION/LIMITING - LED lights green or red; green is normal

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OPERATION Rev. F: 11/09/98

5.3.2 Power Amplifier (PA)

The power amplifier has no controls; the only front panel indicator is listed below.

• DC POWER - not lighted or lighted green; green is normal

5.3.3 Power Supply

The power supply has one control and several fuses listed below.

• no stencil - circuit breaker switch for primary power to power supply

• +13.5V 5A - fuse for 13.5 volt supply to PA metering board

• FAN1 3A - fuse for PA cooling fan one

• FAN2 3A - fuse for PA cooling fan two (GL-T8600 PA only)

• EXC 5A - fuse for exciter/PA control unit

• CNTL 5A - fuse for transmitter controller

• RX 3A - fuse for link receiver

• AUX 3A - fuse for other auxiliary equipment

5.3.4 Transmitter Controller

The front panel contains one control and the indicators listed below.

• STATUS - LED blinks green or is not lighted; blinking is normal

• FAULT - LED lights red or is not lighted; not lighted is normal

• KEY - LED lights green momentarily or is not lighted; either is normal

• CNTL/REF - LED lights green or orange momentarily; either is OK

• DISABLE - LED lights red momentarily; not lighted is normal

• LINE SEIZE - LED lights orange momentarily; refer to user manual

• ALARM ACTIVE - LED lights red; not lighted is normal

• AUXOUT ACTIVE - LED lights orange; refer to user manual

• RESET - switch resets the transmitter controller

5.3.5 Link Receiver

The front panel contains the controls and indicators listed below.

• no stencil - off/on switch controls power to unit

• VOLUME - adjusts monitor speaker volume

• POWER - LED is normally lighted

• NORMAL/TEST/TIGHT - switch that sets receiver squelch mode

• NORMAL - LED lights when receiver squelch in normal

• TIGHT - LED lights when receiver squelch set to tight

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Rev. F: 11/09/98 OPERATION

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• LINE OUT - adjustment for line out level

• OK/HI - LED lights green or red to show line out level; green is normal

• KEY/DIS/REMOTE - switch sets receiver key mode; remote is normal

• KEY LINE - LED is lighted when transmitter is keyed

• FAULT - LED lights red for VCO fault; not lighted is normal

5.4 Front-Panel Operations

The following subparagraphs present operations that are accomplished using front-panel

controls. Since this is a computer-controlled transmitter, only the operations listed below

are possible without the VDT.

• resetting transmitter controller

• receiver power control

• receiver audio monitoring level

• receiver squelch setting

• receiver key options setting

5.4.1 Resetting the Transmitter Controller

To reset the transmitter controller, push the recessed RESET switch. This action re-boots

the controller. It is used only when the controller is nonresponsive to system or user

commands. Reset can cause a loss or change of site operating parameters. Refer to the

transmitter controller user manual for all details.

5.4.2 Receiver Power Control

To apply power to the receiver, set the 1/0 switch to 1; to turn unit off, set switch to 0.

5.4.3 Receiver Audio Monitoring Level

To increase receiver audio monitoring level, turn VOLUME control clockwise. To decrease

level, turn it counterclockwise.

5.4.4 Receiver Squelch Setting

To put receiver in squelch mode, set SQUELCH switch to NORMAL. To put unit in carrier

squelch mode, set switch to TIGHT. To put unit in open squelch mode, set switch to TEST.

5.4.5 Receiver Key Options Setting

To disable receiver remote keying, set receiver front-panel switch to DIS. To key locally,

push switch to KEY. To return receiver to normal service, set switch to REMOTE.

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

OPERATION Rev. F: 11/09/98

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev. F: 11/09/98 THEORY OF OPERATION

sec_6

6 THEORY OF OPERATION

6.1 Introduction

Refer to Figure 6-1 and Figure 6-3. The Gold Line GL-T8500 and GL-T8600 transmitters

operate in a larger paging network. This figure shows how the paging transmitter fits into

the overall paging network.

The following paragraphs provide a block diagram-level functional description of a typical

Gold Line GL-T8500 and GL-T8600 paging sites.

6.2 Simplified Functional Descriptions

6.2.1 Paging Site

Refer to Figure 6-4. This figure shows basic signal flows between the various paging site

equipment pieces.

6.2.2 Paging Transmitter

The Gold Line paging transmitter converts audio from the receiver or wireline, into

modulated and amplified RF. This function is performed in response to commands from the

transmitter controller via the exciter/PA control unit. The transmitter monitors its functions

and reports its status to the VDT via the exciter/PA control unit. The paging signal is

normally supplied via the transmitter controller, which permits the transmitter to be

controlled and monitored from a remote location. Local control and monitoring is

performed through a VT-100 video display terminal (VDT).

Note

If this equipment is to transmit 4-level or higher FSK data, the data lines

(1-4) must not be separated by more than 1.8 microseconds in order to

operate properly.

6.2.3 Exciter / PA Control Unit

The exciter / PA control unit combines functions of an RF exciter and a PA controller. The

exciter generates modulation using digital signal processing (DSP) to achieve accurate,

stable modulation that does not vary with time or temperature. The PA control section

monitors transmitter status signals in the form of fault logic and voltage samples. The

microprocessor in the exciter reports PA status to the controller, VDT, and the exciter front

panel. If a malfunction occurs, the transmitter enters a reduced operating condition

depending on the level of the fault. PA control and status monitoring is performed by the

microprocessor, which consolidates control logic from the controller or the locally operated

VDT. Both the exciter and controller receive continuous status reports from the micropro-

cessor. The exciter is the control and status-monitoring interface between the transmitter

and the user.

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

THEORY OF OPERATION Rev. F: 11/09/98

6.2.4 Power Amplifier

The Gold Line PA performs amplification of the RF signal generated by the exciter. An

indicator visible on the front panel lights when the PA is receiving operating power. The PA

amplifies a nominal 0.25-watt signal to 250 or 500 watts for application to the antenna

system. Monitoring circuitry is on the metering board in the PA chassis. PA functions

include those listed below.

• overheat sensing

• over-current protection

• general fault detection

• output level monitoring

• input level monitoring

6.2.5 Power Supply

The standard Gold Line power supply takes ac input, converts it, rectifies and filters it, and

supplies dc output to all racked equipment. Each dc circuit is individually fused on the front

of the supply. A circuit breaker on the front of the supply doubles as a transmitter power

on/off switch.

6.2.6 Link Receiver

The link receiver monitors specific RF channels for data, command, and control informa-

tion and forwards it to the paging site equipment. The receiver is used in place of a

telephone wireline to link the paging site equipment to the paging network.

6.2.7 Video Display Terminal

The VDT, though not part of the transmitter, is required for setup, local control, and local

monitoring of the transmitter. The VDT can be any laptop or desktop terminal with a VT-

100 type program. The VDT interfaces the transmitter through the connector on the front

of the exciter. The Gold Line transmitter VDT software is menu driven.

6.3 Site Signal Flows

6.3.1 Site RF Signal Flow

The on-frequency carrier is created by the VCO circuitry in the exciter / PA control unit. It

is then modulated with paging information, amplified, and sent to the PA via connector J3

on the back of the exciter / PA control unit. Through coaxial cable, the carrier goes to the

back of the PA where it is further amplified to a preset level. The amplified carrier is cabled

from the PA output to the input of the isolator where it is cleaned up and sent to the antenna

system. Note that some installations have a ten MHz reference signal cabled from the

controller to connector J8 on the back of the exciter / PA control unit.

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Rev. F: 11/09/98 THEORY OF OPERATION

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6.3.2 Site Audio Signal Flow

The audio signal arrives at the site either through a link receiver or by wireline. The signal

can be either analog or digital and is first routed through the transmitter controller. The

controller checks for and responds to appropriate embedded commands. Paging informa-

tion is supplied to the exciter. The exciter modulates this signal using digital signal

processing, then up-converts this modulated signal to final RF. This modulated RF from the

exciter is supplied to the PA, which amplifies the signal to the RF output level. This modu-

lated, amplified RF from the PA is supplied to an antenna for transmission. An audio-

monitoring speaker is available on the RL-903 receiver.

6.3.3 Site Control Signal Flow

Gold Line transmitter paging site control is done two ways: remotely (normal operation),

and locally. In either case, the paging site broadcasts when the transmitter controller

commands the transmitter, via the Gold Line exciter / PA control unit, to key and transmit.

Control functions are shared by the transmitter controller and the G/L exciter / PA control

unit, which controls the power amplifier. The exciter / PA control unit also controls the

power amplifier, locally, by responding to commands from the video display terminal

(VDT).

Control signals enter and exit the paging site via the transmitter controller, which has

overall control of the paging site. The TXC is part of the larger QT-1000 paging control

system even though it is racked with paging site equipment. Controller functions include

those listed below.

• transmitter alarm gathering

• transmitter alarm dispatching

• simulcast parameter implementation

• remote transmitter operation interface.

Remote control of the paging site is done through commands being sent to the transmitter

controller from the external paging control system.

Control commands originating from a remote site are supplied to the exciter through the

controlling device. Control and setup commands may be applied to the exciter locally

through the VDT. A microprocessor within the exciter interprets each command and

responds by performing the appropriate function.

6.3.4 Status Signal Flow

The exciter monitors extensive transmitter status signal in the form of fault logic and

voltage samples. The microprocessor within the exciter reports transmitter status to the

controlling device, VDT, and the exciter front panel. If a transmitter malfunction occurs, a

reduced operating condition is entered depending on the level of the fault.

6.4 Site Signals

Refer to Figure 6-4 and Figure 6-5.

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

THEORY OF OPERATION Rev. F: 11/09/98

Figure 6-1 Paging Network Signal Diagram (w/QT-1000)

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev. F: 11/09/98 THEORY OF OPERATION

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Figure 6-2 Paging Network Signal Diagram (w/C2000)

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

THEORY OF OPERATION Rev. F: 11/09/98

Figure 6-3 Site Signal-Flow Diagram

Reserved

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev. F: 11/09/98 THEORY OF OPERATION

sec_6

Figure 6-4 Site Signals Diagram (w/QT-1000) (page 1 of 2)

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

THEORY OF OPERATION Rev. F: 11/09/98

Figure 6-4 Site Signals Diagram (page 2 of 2)

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev. F: 11/09/98 THEORY OF OPERATION

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Figure 6-5 Site Signal Diagram (w/C2000) (page 1 of 2)

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

THEORY OF OPERATION Rev. F: 11/09/98

Figure 6-5 Site Signal Diagram (w/C2000) (page 2 of 2)

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev. F: 11/09/98 MAINTENANCE

sec_7

7 MAINTENANCE

7.1 Introduction

Maintenance procedures in this section are listed below.

• power amplifier current check

• dc ripple check

7.2 Maintenance Procedures

7.2.1 PA Current Check

Once per year the power amplifier device currents should be compared to the levels listed

on the data sheet that accompanied the transmitter. Be sure that the operating RF output is

the same as listed on the data sheet.

• put transmitter in local mode

• key transmitter

• monitor power amplifier currents on VDT

• make comparison between data sheet and monitor

Monitored currents should not vary more than ten percent from data sheet levels. An

exception is when original components or modules have been replaced or modified.

7.2.2 Dc Ripple Check

Once per year the dc supply current should be checked for excessive ripple. Maximum

allowable ripple is given in section two of this manual. The supply should be under normal

operating load for this procedure.

• put transmitter in local mode

• key transmitter

• connect oscilloscope between ground and supply output

• set oscilloscope to read ripple

The observed ripple level should be less than the specification given in section two of this

manual.

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

MAINTENANCE Rev. F: 11/09/98

7.2.3 Audio Level Check (QT-1000 only)

Once per year audio level through the TXC should be checked. To identify components, it

may be necessary to refer to Figure 9-1 in TXC User Manual 9110.0029.

• put transmitter in local mode

• command SYC to send test tone to TXC

• remove to cover of TXC

• observe that LED 9 (yel) not lit; LED 10 (grn) should be lit

The procedure to properly set this audio level is given in section four of this manual.

7.2.4 VDT Maintenance

Other procedures are available through VDT connection to the exciter/PA control unit.

VDT user manual description is given in section one of this manual.

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev. F: 11/09/98 CHECKOUT AND TROUBLESHOOTING

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8 CHECKOUT AND TROUBLESHOOTING

8.1 Introduction

Checkout procedures can be performed at any time to verify that the transmitter and related

paging site equipment is functioning properly. After the checkout procedures are success-

fully completed, the site can be returned to normal service. Any troubleshooting procedure

provided or referenced, which is a direct result of a failed checkout procedure, should be

pursued before trying to complete the checkout procedure.

The following procedures presume that the setup procedures in section four of this manual

have already been successfully completed. Refer to the VDT user manual for more

checkout procedures.

8.2 Checkout Procedures

8.2.1 Dc Voltage Verification

Once powered, verify that equipment is powered. Check list below.

• on G/L PA front panel, DC POWER indicator is on

• on G/L exciter front panel, DC POWER indicator is on

• on TXC front panel, STATUS indicator blinks at 1 Hz rate (QT-1000 only)

• on receiver, POWER indicator is on

8.2.2 VDT Power-up Verification

Once powered, verify that the VDT is powered. Check list below.

• the VDT should have a cursor displayed and blinking or

• the VDT should have an instructional prompt displayed or

• the VDT should have an auto-loaded program running

8.2.3 Cooling Fans Check

Once powered, verify that the fans are operating.

8.3 Troubleshooting Procedures

Refer to the VDT user manual for troubleshooting procedures.

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

CHECKOUT AND TROUBLESHOOTING Rev. F: 11/09/98

Glenayre Document Number: 9110.00163 GL-T8500-CN/GL-T8600-CN System Manual

Rev. F: 11/09/98 REMOVAL AND REINSTALLATION

sec_9

9 REMOVAL AND REINSTALLATION

9.1 Introduction

All of the Gold Line site equipment is accessed from the front of the rack to remove or

install individual equipment pieces.

9.2 Required Tools

Site equipment can be removed and installed using only common hand tools.

9.3 Removal

Equipment removal is performed on a piece by piece method. Disconnect all connecting

cables and wires before removing the equipment. Refer to the individual equipment

manuals for details.

9.4 Reinstallation

Equipment reinstallation is performed on a piece by piece method. Connect all cables and

wires after installing the equipment. Refer to the individual equipment manuals for details.

GL-T8500-CN/GL-T8600-CN System Manual Glenayre Document Number: 9110.00163

REMOVAL AND REINSTALLATION Rev. F: 11/09/98

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Glenayre Electronics Inc Base Station s frame f9110s f00163 sec 1 bk

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