Glenayre RL-903 User manual

Issue 1, Rev. C: 12/10/96
RL-903 Receiver
RL-903 900-MHz Receiver
USER MANUAL
PN 9110.00148
(old part number =
916-0903-001)
RELEASED
Specifications subject to change without notice
Copyright ©1996 Glenayre
All rights reserved. No part of this work may be reproduced or copied in any form or by
any means - graphic
,
electronic, or mechanical, including photocopying, recording,
taping, or information-retrieval system - without written permission of Glenayre.
Print Date: 12/05/96
Copyright © 1996 Glenayre

RL-903 Receiver
Document Change Record
Glenayre Document Number: 9110.00148
Issue 1, Rev. C: 12/10/96
Document Change Record
Issue: 1
Date: 08/31/94
Changes:
none, original
Issue:
1
Date: 12114/95
Changes: new format
Issue: 1; Rev. C
Date: 12/10/96
Changes:
minor corrections, added schematics
Copyright © 1996 Glenayre
Print Date: 12/05/96

RL-903 Receiver
Table of Contents
Glenayre Document Number: 9110.00148
Issue 1, Rev. C: 12/10/96
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
About Glenayre
................................................................................................
1-2
1.4.1 Product Warranty Infomation
1-3
1.4.2
Service Warranty Information
..........................................................
1-3
1.5 Regulatory-Authority Compliance
..................................................................
1-3
1 .5.1 FCC
1-3
1
.5.2 Industry Canada
1-3
2SPECIFICATIONS
..................................................................................................
2-1
3
DESCRIPTION
........................................................................................................
3-1
3.1 Introduction
3-1
3 .2 Physical Description
3-1
3.3
Simplified Block-Diagram Description
..........................................................
3-1
4
INSTALLATION AND SETUP.............................................................................
4-1
4.1 Precautions and Hazards
.................................................................................
4-1
4.2 Test Equipment and Tools Required
...............................................................
4-1
4.3 Component and Adjustment Locations
...........................................................
4-1
4.4 Installation
4-2
4.4.1 Inspection
4-2
4.4.2 Power Requirement
..........................................................................
4-2
4.4.3 Input-output Connections
4-2
4.4.4 Internal Test Points, Switches, and Jumpers
....................................
4-2
4.5 Ultimate Disposition
4-2
5 OPERATION
...........................................................................................................
5-1
5.1
Front-Panel Controls and indicators
...............................................................
5-1
5.2 Operating Instructions
.....................................................................................
5-1
6
THEORY OF OPERATION..................................................................................
6-1
6 .1 PS/2 Board
6-1
6 .1.1 Power Supply
6-1
6 .1.2 Audio Amplifier
6-1
6.2 RF Amplifier/First Mixer
................................................................................
6-1
Copyright
© 1996 Glenayre
Page: -i
Print Date: 12/05/96

RL-903 Receiver
Table of Contents
Glenayre Document Number: 9110.00148
Issue 1, Rev. C: 12/10/96
6.3 Synthesizer and VCO Block-Diagram Description
........................................
6-1
6 .3.1 VCO
6-2
6 .3.2 PLL Synthesizer...............................................................................
6-2
6.3.3 Reference Oscillators
........................................................................
6-2
6 .3.4 Programming Logic
..........................................................................
6-2
6.4 IF Board
...........................................................................................................
6-4
6.4.1 IF Amplification and FM Detection
.................................................
6-4
6 .4.2 Audio Processing
..............................................................................
6-4
6 .4.3 Squelch and RSSI
.............................................................................
6-4
6.4.4 Fault Reporting
.................................................................................
6-5
6.4.5 Keying
6-5
6.5 Line Driver Circuit (optional) (IF board)
........................................................ 6-5
7 MAINTENANCE
.....................................................................................................
7-1
7 .1 Test Conditions................................................................................................
7-1
7.2 Power Supply (PS/A board unless noted)
.......................................................
7-1
7.3 Local Oscillator Setup (synthesizer board, unless noted)
...............................
7-1
7.4 VCO Tuning (synthesizer board unless noted)
...............................................
7-2
7.5 RF and IF Tuning (IF board unless noted)
......................................................
7-2
7.6
Squelch and RSSI Adjustment (IF board unless noted)
..................................
7-6
7.7
Audio Level Adjustment (IF board unless noted)
...........................................
7-9
8CHECKOUT AND TROUBLESHOOTING
........................................................
8-1
8.1
Power Supply (PS/A board unless noted)
......................................................
8-1
8.2 Audio (IF board unless noted)
......................................................................... 8-1
8.3 Synthesizer, Frequency, and Reference Oscillator
.........................................
8-2
8.4 RF, IF, and Squelch (IF board unless noted)
..................................................
8-2
9
REMOVAL AND REINSTALLATION
................................................................
9-1
9.1
Access to Internal Assemblies
........................................................................
9-1
9.2 PS/A Board
......................................................................................................
9-2
9 .3
IF Audio Board
................................................................................................
9-2
9.4 VCO Board
......................................................................................................
9-2
9 .5 RF Board Assembly
........................................................................................
9-3
10 FIGURES
.................................................................................................................
10-1
Copyright ©1996 Glenayre Print Date: 12/05/96
Page: -ii

RL-903 Receiver
List of Figures
Glenayre Document Number: 9110.0014
.
8
Issue 1, Rev. C: 12/10/96
List of Figures
Figure 3-1 Receiver Isometric Front View
...................................................................
3-3
Figure 3-2 Receiver Rear View
.....................................................................................
3-4
Figure 3-3 Top View of Internal Assemblies
................................................................
3-5
Figure 3-4
Receiver Functional Diagram
......................................................................
3-6
Figure 5-1
Front-Panel Controls and Indicators
...........................................................
5-3
Figure 6-1 Synthesizer Functional Diagram
.................................................................
6-3
Figure 7-1 Synthesizer Controls and Indicators
............................................................
7-4
Figure 7-2 Test Setup
....................................................................................................
7-9
Figure 7-3
Programming Synthesizer Frequency.......................................................
7-12
Figure 7-4
RF Assembly - Adjustments.....................................................................
7-16
Figure 7-5 IF Board Controls and Indicators
..............................................................
7-19
Figure 7-6 PS/A Board Controls and Indicators
.........................................................
7-20
Figure 10-1 Interface Board 265-0305-002 Assembly and Schematic
.........................
10-1
Figure 10-2 IF Audio Board Schematic
........................................................................
10-2
Figure 10-3 Front End Schematic
..................................................................................
10-5
Figure 10-4 VCO Board Schematic
...............................................................................
10-6
Figure 10-5 PS/A Board Schematic
...............................................................................
10-7
Copyright © 1996 Glenayre
Page: -iii
Print Date: 12/05/96

RL-903 Receiver
List of Figures
Glenayre Document Number: 9110.00148
Issue 1, Rev. C: 12/10/96
Copyright © 1996 Glenayre
Print Date: 12/05/96
Page: -iv

RL-903 Receiver
List of Tables
Glenayre Document Number: 9110.00148
Issue 1, Rev. C: 12/10/96
List of Tables
Table 1-1 Applicable Documents
.................................................................................
1-1
Table 1-2 Manual Sections
...........................................................................................
1-2
Table 2-1
Specifications
2-1
Table 4-1
Test Equipment Required
............................................................................
4-1
Table 4-2
I/O Connections
...........................................................................................
4-3
Table 4-3
Internal Connections among Assemblies
....................................................
4-4
Table 5-1
Front-Panel Controls and Indicators
...........................................................
5-2
Table 7-1
VCO Controls and Indicators......................................................................
7-3
Table 7-2
RSSI Levels
.................................................................................................
7-7
Table 7-3
RSSI Levels when Receiving
a Signal from Link Transmitter...................................................................
7-8
Table 7-4 Programming Synthesizer Frequency
.......................................................
7-11
Table 7-5 Synthesizer Switch Settings for Common Frequencies
............................
7-13
Table 7-6 RF Board Controls
.....................................................................................
7-16
Table 7-7
IF Board Controls and Indicators..............................................................
7-17
Table 7-8
PS/A Board Controls
.................................................................................
7-20
Copyright ©1996 Glenayre
Page: -v
Print Date: 12/05/96

RL-903 Receiver
List of Tables
Glenayre Document Number: 9110.00148
Issue 1, Rev. C: 12/10/96
Copyright © 1996 Glenayre Print Date: 12/05/96
Page: -vi

1.1
Manual Scope
This
manual presents the RL-903 900-MHz-range receiver. It contains information
concerning the overall operation of the front end, IF board, VCO, and power supply. The
optional tone board is treated in a separate manual.
Models in the series include:
•
RL-903R, link repeater receiver, which passes the signal to a link transmitter
•
RL-903XC, receiver for use by an external control device.
The above models may be narrowband, for 2.5-kHz-deviation systems, or wideband, for
5-kHz-deviation systems. Any of these combinations may have the line driver (LD) option,
which provides a balanced output for telephone lines. The LD option may also be a separate
model.
1.2
Applicable Documents
Other manuals, in addition to this manual, may be required for complete paging-site docu-
mentation. 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.
Copyright © 1996 Glenayre
Page: 1-1
Print Date: 12/05/96

RL-903 Receiver
GENERAL
Glenayre Document Number: 9110.00148
Issue 1, Rev. C: 12/10/96
1.4 About Glenayre
Questions regarding the equipment or this manual should be directed to:
U.S.A.
Glenayre Customer Service - RF
One Quintron Way
Quincy, Illinois 62305-3726
Phone: [phone]
Fax: [phone]
UNITED KINGDOM
Glenayre Electronics (UK) Ltd.
Unit 3, Challenge House
Sherwood Drive
Milton Keynes, HERTS MK3 6DP
Phone: [phone]
Fax: [phone]
CANADA
Glenayre Customer Service - RF
1450 Kootenay Street
Vancouver, B.C.V5K 4R1
Phone: [phone]
Fax: [phone]
SINGAPORE
Glenayre Electronics PTE
.
Block 5012 Ang Mo Kio Avenue 5
Industrial Park 2 Unit 05-03/04
Singapore 2056
Phone: [phone]
Fax: [phone]
Copyright © 1996 Glenayre Print Date: 12/05/96
Page: 1-2