Glenayre RL-903, RL-903R, RL-903XC User Manual

RL-903 Receiver

Issue 1, Rev. C: 12/10/96

RL-903 900-MHz Receiver

USER MANUAL

PN 9110.00148

(old part number

RELEASED

Specifications subject to change without notice

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.

916-0903-001)

Print Date: 12/05/96

RL-903 Receiver Document Change Record

Glenayre Document Number: 9110.00148

Issue 1, Rev. C: 12/10/96

Document Change Record

Issue: Date:

Changes:

Issue: Date: Changes:

08/31/94 none, original

1 12114/95

new format

Rev. C

12/10/96

minor corrections, added schematics

Print Date: 12/05/96

Glenayre Document Number: 9110.00148 Issue1,Rev. C: 12/10/96

RL-903 Receiver

Table of Contents

GENERAL

1.5

SPECIFICATIONS

DESCRIPTION

3.1 3

3.3

INSTALLATION AND SETUP

4.1

4.2

4.3

4.4

4.5

5 OPERATION

5.1

5.2

THEORY OF OPERATION

PS/2

6.2

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Manual Scope

Applicable Documents Manual Sections About Glenayre

1.4.1

1.4.2

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

Product Warranty Infomation

Service Warranty Information

Regulatory-Authority Compliance

.5.1

.5.2

FCC Industry Canada

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

Introduction Physical Description Simplified Block-Diagram Description

Precautions and Hazards Test Equipment and Tools Required Component and Adjustment Locations Installation

4.4.1

4.4.2

4.4.3

4.4.4

Inspection Power Requirement

Input-output

Internal Test Points, Switches, and Jumpers

Ultimate Disposition

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Front-Panel Controls and indicators

Operating Instructions

Board

.1.1

Power Supply

.1.2

Audio Amplifier

RF Amplifier/First Mixer

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Connections

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1-1

1-1 1-1 1-1

1-2

1-3 1-3 1-3 1-3 1-3

2-1 3-1

3-1 3-1

3-1

4-1

4-2

5-1

6-1

6-1 6-1

6-1

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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

.3.1

6.3.3

6.4

IF Board

6.4.1

6.4.4

6.4.5

6.5

Line Driver Circuit (optional) (IF board)

MAINTENANCE

Test Conditions

7.2

Power Supply (PS/A board unless noted)

7.3

Local Oscillator Setup (synthesizer board, unless noted)

7.4

VCO Tuning (synthesizer board unless noted)

7.5

RF and IF Tuning (IF board unless noted) Squelch and RSSI Adjustment (IF board unless noted)

7.6

Audio Level Adjustment (IF board unless noted)

7.7

CHECKOUT AND TROUBLESHOOTING

Power Supply (PS/A board unless noted)

8.1

8.2

Audio (IF board unless noted)

8.3

Synthesizer, Frequency, and Reference Oscillator

8.4

RF, IF, and Squelch (IF board unless noted)

REMOVAL AND REINSTALLATION

Access to Internal Assemblies

9.1

9.2

PS/A Board

.3.2

.3.4

.4.2

.4.3

VCO

PLL Synthesizer

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

Reference Oscillators Programming Logic

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

IF Amplification and FM Detection Audio Processing Squelch and Fault Reporting

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

RSSI

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

Keying

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6-1

6-2

6-4

6-5

7-1

7-2

7-6

7-9

8-1

8-2

9-1

9-2

IF Audio Board

9.4

VCO Board

RF Board Assembly

10 FIGURES

Page: -ii

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9-2

9-3

10-1

Date: 12/05/96

Glenayre Document Number: 9110.0014 Issue 1, Rev. C: 12/10/96

RL-903 Receiver

List of Figures

Figure 3-1

Receiver Isometric Front View Figure 3-2 Receiver Rear View Figure 3-3 Figure 3-4 Figure 5-1 Figure 6-1 Figure 7-1 Figure 7-2 Figure 7-3 Figure 7-4 Figure 7-5

Figure 7-6

Top View of Internal Assemblies

Receiver Functional Diagram

Front-Panel Controls and Indicators

Synthesizer Functional Diagram

Synthesizer Controls and Indicators

Test Setup

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Programming Synthesizer Frequency RF Assembly - Adjustments IF Board Controls and Indicators PS/A Board Controls and Indicators

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Figure 10-1 Interface Board 265-0305-002 Assembly and Schematic Figure 10-2 IF Audio Board Schematic

Figure 10-3 Front End Schematic Figure 10-4 VCO Board Schematic

Figure 10-5 PS/A Board Schematic

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3-3 3-4

3-5 3-6 5-3 6-3 7-4

7-9 7-12 7-16 7-19 7-20

10-1 10-2 10-5 10-6 10-7

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-iii

RL-903 Receiver List of Figures

Glenayre Document Number: 9110.00148

Issue 1, Rev. C: 12/10/96

Page: -iv

Print Date: 12/05/96

Glenayre

Issue 1, Rev. C:

Document Number:

12/10/96

9110.00148

List of Tables

RL-903 Receiver

List of

Tables

Table 1-1 Table 1-2 Table 2-1 Table 4-1 Table 4-2 Table 4-3 Table 5-1 Table 7-1 Table 7-2 Table 7-3

Table 7-4 Table 7-5 Table 7-6

Table 7-7 Table 7-8

Applicable Documents Manual Sections

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

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

Specifications Test Equipment Required I/O Connections

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

Internal Connections among Assemblies Front-Panel Controls and Indicators VCO Controls and Indicators RSSI Levels

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RSSI Levels when Receiving a Signal from Link Transmitter

Programming Synthesizer Frequency

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Synthesizer Switch Settings for Common Frequencies RF Board Controls IF Board Controls and Indicators PS/A Board Controls

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1-1 1-2 2-1 4-1 4-3

4-4

5-2 7-3 7-7

7-8 7-11 7-13 7-16 7-17 7-20

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RL-903 Receiver List of Tables

Glenayre Document Number: 9110.00148

Issue 1, Rev. C: 12/10/96

Page: -vi

1.1

Manual Scope

manual presents the RL-903 900-MHz-range receiver. It contains information

This

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 documentation. Refer to

brief description of each.

Table

for a list of applicable documents, their part numbers, and a

1-1

1.3

Print Date: 12/05/96

Manual Sections

Refer to tion of the content of each section.

Table

1-2.

This table lists the sections in this manual, and provides a brief descrip-

Page: 1-1

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: (217) 223-3211 Fax: (217) 223-3284

UNITED KINGDOM Glenayre Electronics (UK) Ltd. Unit 3, Challenge House Sherwood Drive Milton Keynes, HERTS MK3 6DP Phone: 44 (908) 644-642 Fax: 44 (908) 644-643

CANADA Glenayre Customer Service - RF

1450 Kootenay Street

Vancouver, B.C.V5K 4R1

Phone: (604) 293-1611 Fax: (604) 293-4301

SINGAPORE

Glenayre Electronics PTE

Block 5012 Ang Mo Kio Avenue 5

Industrial Park 2 Unit 05-03/04

Singapore 2056 Phone: (65) 4811828 Fax: (65) 4812838

Page: 1-2

Print Date: 12/05/96

Glenayre Document Number: 9110.00148

Issue 1, Rev. C: 12/10/96

RL-903 Receiver

GENERAL

1.4.1

1.4.2

Product Warranty Information

Glenayre warrants to the original purchaser that Glenayre products are free from defects in

material or workmanship for a period of twelve months from the original invoice date,

subject to the provisions herein. Glenayre will repair or replace at its option, FOB our

factory, free of charge within one year from the date of shipment, any component, assembly

or subassembly of our manufacture found to be defective under conditions of normal use.

The unit, if repaired, will be returned to its original specifications. Failures caused by unau-

thorized damage including use with incompatible equipment are specifically excluded from this

warranty. Glenayre disclaims any and all liability for loss or other damage whether direct, consequential or of any nature whatsoever, resulting from product failure.

This warranty is in lieu of all other warranties expressed or implied and covers only those items

Glenayre, is subject only to any warranty offered by the manufacturer of said equipment.

modifications,

manufactured by Glenayre. Equipment supplied by, but not manufactured by

force majeure,

lightning, physical, environmental, or electrical

Service Warranty Information

Return of a defective item must be authorized by Glenayre prior to shipment. A Return Authorization number can be obtained from Glenayre Customer Service. When requesting a Return Authorization number, give the serial number of the unit. A description of the fault should accompany the unit on its return and the RA number must be shown on labels attached to the item(s). The cost of shipping to Glenayre is to be paid by the customer. Shipping from Glenayre will be prepaid by the customer, and shipped via surface mail. If express shipping is required, the unit will be shipped collect.

1.5

Any repair service performed by Glenayre under this limited warranty is warranted to be free from defects in material or workmanship for ninety days from the date of repair. All other terms of this limited warranty apply to the service warranty.

Reaulatorv-Authoritv Comoliance

1.5.1

1.5.2

FCC

This device complies with part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference.

Industry Canada

This device complies with RSS-210 of Industry Canada. Operation is subject to the following two conditions:

this device may not cause interference, and this device must accept any interference, including interference that may cause undesired operation of the device.

Print Date:

12/05/96

Page:

1-3

RL-903 Receiver GENERAL

Glenayre Document Number: 9110.00148

Issue 1, Rev. C: 12/10/96

Page: 1-4

Print Date: 12/05/96

Glenayre Document Number: 9110.00148 Issue 1, Rev. C: 12/10/96

SPECIFICATIONS

RL-903 Receiver

SPECIFICATIONS

Table 2-1, Specifications,

lists the specifications of the receiver. performed per the ANSI/EIA-603/1992 standard, "Land Mobile FM or tions Equipment Measurement and Performance Standards,

All receiver tests were

approved October 27, 1992,

and dated February 1993.

Table 2-1 Specifications

characteristic (unit of

measurement) specification

frequency range (MHz)

922-960 (in special cases, to 902) in bands as

follows: 900-920, 920-940, 940-960

modulation acceptance (kHz)

wideband, +/-7.0 narrowband, +/-5.0

sensitivity (uV for 12-dB SINAD)

wideband, 0.35, narrowband, 0.35

sensitivity (uV for 20 of quieting)

wideband, 0.5

narrowband, 0.5

channel spacing (kHz)

narrowband, 12.5 wideband, 25

adjacent-channel rejection (dB of rejec-

kHz;

tion: wideband, 25

kHz)

12.5

narrowband,

wideband, -80 narrowband, -75

Communica-

alternate-channel rejection (dB of rejection, wideband, 50 kHz; narrowband,

25 kHz) intermodulation (dB)

spurious response (dB)

maximum squelch sensitivity,

TIGHT

(carrier) squelch (dBm) minimum squelch sensitivity,

MAL

(noise) squelch (dBm)

NOR-

speaker output

distortion (percent) hum and noise (3-kHz deviation with

1-kHz tone) (dB)

output power (W)

wideband, -85 narrowband, -80

wideband, -80 narrowband, -75

wideband, -100 narrowband, -100

wideband, -65 narrowband, -65

wideband, -113 narrowband, -113

5 or better wideband, -40

narrowband, -40

1.5

Print Date: 12/05/96

Page: 2-1

RL-903 Receiver SPECIFICATIONS

Glenayre Document Number: 9110.00148

Issue 1, Rev. C: 12/10/96

Table 2-1 Specifications

characteristic (unit of

measurement)

audio response, 3(X) to 3000 Hz (dB)

flat audio output

max distortion at 1

kHz,

2/3

modulation (percent) hum and noise (dB to 3 kHz)

frequency response (dB with respect to 1000 Hz)

phase linearity (max degrees of

deviation from RL-900

line driver

output level (dBm) max frequency response variation

from 1000 Hz (dB)

(continued)

specification

-1, +8, from nominal 750-usec deemphasis curve

wideband, 1.5 narrowband, 2.5

wideband, -50 narrowband, -50

wideband, +/-1 narrowband, +/-1

wideband, +/-10 narrowband, +/-10

-15 to +5 (normally 0 dBm) wideband, +/-0.5

narrowband, +/-0.5

input power 10.6 to 29 Vdc at less than 2 A, 3 A peak operating temperature range (degrees

-30 to +60

centigrade) storage temperature (degrees centi-

-40 to +85

grade) relative humidity, noncondensing 5 to 95 percent

altitude (ft)

to 10,000 (3050 m)

chassis dimensions 3.5 in (9 cm) high x 19 in (48 cm) wide x 8 in

(20.3 cm) deep. excluding front and rear pro-

jections chassis weight FCC ID

5.7 lb (2.6 kg) BFL RL-903

Page: 2-2

Glenayre

Print Date: 12/05/96

Glenayre Document Number: 9110.00148 Issue 1, Rev. C: 12/10/96

characteristic (unit of measurement)

tone board

(optional, not used in determining above

keytone notch filter

center frequency (Hz) 2875 or user-selectable

RL-903 Receiver

SPECIFICATIONS

specification

specifications)

notch depth (dB) below full modulation

-1-dB bandwidth at 2875 Hz (Hz)

keytone decoder

frequency (Hz)

sensitivity (dB) turn-on time (ms) hold time (ms)

2835 to 2915

2875 or user-selectable 32 below +1- 3 kHz deviation or better 200

100

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Glenayre

Page: 2-3

RL-903 Receiver SPECIFICATIONS

Glenayre Document Number: 9110.00148

Issue 1, Rev. C: 12/10/96

Page: 2-4

Print Date: 12/05/96

Glenayre Document Number: 9110.00148 RL-903 Receiver Issue 1, Rev. C: 12/10/96

DESCRIPTION

3.1

3.2

Introduction

The receiver may be used in three types of applications or in various combinations:

•

Additionally, in combination with any of these, it may be used as a monitor receiver with line driver (LD) suitable for telephone lines.

Physical Description

The receiver is normally mounted in a standard rack and requires two rack units.

Table 2-1

•

Additional components may need to be installed in order to enable the line driver output.

link repeater receiver for link transmitter (R). link receiver with external control (XC) for paging transmitter.

includes physical characteristics. These are the main assemblies:

RF board

IF board VCO assembly/synthesizer board power supply/audio amplifier (PS/A) interface board attached to the rear of the chassis (not used in some configurations).

3.3

For views of the receiver, refer to Figure 3-1, Receiver Isometric Front View, Figure 3-2, Receiver Rear View,

control board may be used and is mounted on the IF board.

and

Simplified Block-Diagram Description

Refer to capable of covering the range of paging and link frequencies between 922 MHz and 960

MHz. Channel spacing is 12.5 or 25 kHz. The radio has a synthesized local oscillator. The receive frequency is set in 6.25-kHz steps by a selection of DIP switches. The electronic tuning range is approximately one MHz before manual (coarse) oscillator retuning is required.

The 900-MHz signal enters at the rear of the chassis and is routed to the RF assembly, where it is amplified and mixed to produce a 45-MHz IF signal.

An internal or external reference oscillator furnishes the reference for the synthesizer. The VCO output is routed to mixer Ul on the RF assembly. For a description of the synthesizer and VCO, refer to

IF amplifiers Q5 and Q6 amplify the first IF signal and make up any losses caused by the insertion loss of the IF filters. FM detector chip U2 is the second mixer and quadrature detector for the receiver. Its output includes the recovered audio and a signal-strength indicator which are passed to the audio and squelch circuitry.

Figure 3-4, Receiver Functional

Paragraph 6.3, Synthesizer and VCO Block-Diagram Description.

Figure 3-3, Top View of Internal Assemblies.

Diagram.

The RL-903 is a self-contained receiver

An optional tone-

Print Date: 12/05/96

Glenayre

Page:

3-1

RL-903 Receiver DESCRIPTION

Glenayre Document Number: 9110.00148

Issue 1, Rev. C: 12/10/96

The audio_dc signal is dc-coupled all the way from the quadrature detector to J1. The audio_ac signal is filtered to produce standard transmitter audio. This signal may be routed through the optional tone board to produce a logic indication if a control tone is detected and to optionally notch out the control tone to a transmitter (tone is normally not notched). For a discussion of the tone board, refer to its manual. See

Table 1-1.

An external delay device or other type of audio processor may be spliced into the audio path, depending on jumper settings. See

Table 7-7, IF Board Controls and Indicators.

The received-signal-strength indicator is a dc voltage which gives a relative indication of the signal strength.

The R tone-controlled link receiver reserves a segment of the audio passband (normally a narrow band centered on 2875 Hz) for control purposes. The presence of a tone at that frequency causes the keyline to the transmitter to become active. The R receiver can be set up to notch the control tone out of the audio passband, but the R receiver normally passes the control tone, along with the rest of the audio passband.

Refer also to the system theory of operation of the associated transmitter for additional discussion. Refer to the tone-control manual (see

Table 1-1

for part number) for a discus-

sion of the operation of the tone board.

Some systems require more extensive control than that offered by tone keying. In such cases, an external device uses the receiver audio and squelch status to control the associated transmitter. Refer to the control device's manual for additional discussion.

An external 600-ohm, balanced output may be used for sending remotely monitored audio over telephone lines. This feature may be used at the same time as the previously mentioned

features. Additional components may need to be installed on the RF board in order for this feature to be enabled.

The received-signal-strength indicator (RSSI) is a dc voltage which gives a relative indication of the signal strength.

There are two types of squelch which may be used:

•

noise squelch (NORMAL) for normal reception and

•

carrier squelch (TIGHT) for reception in areas of high RF density.

The power supply uses switching techniques to provide a stable output voltage despite wide variations in the input. The board also provides the audio amplifier for the chassis-mounted

speaker.

Page: 3-2

Date: 12/05/96

Glenayre Document Number: 9110.00148

Issue 1, Rev. C: 12/10/96

RL-903 Receiver

DESCRIPTION

Print Date: 12/05/96

Page: 3-3

RL-903 Receiver DESCRIPTION

Glenayre Document Number: 9110.00148

Issue 1, Rev. C: 12/10/96

Page: 3-4

Glenayre Document Number: 9110.00148 Issue 1, Rev. C: 12/10/96

RL-903 Receiver

DESCRIPTION

Print Date: 12/05/96

Page: 3-5

RL-903 Receiver DESCRIPTION

Glenayre Document Number: 9110.00148

Issue 1, Rev. C: 12/10/96

Page: 3-6

Glenayre Document Number: 9110.00148 Issue 1, Rev. C: 12/10/96

INSTALLATION AND SETUP

RL-903 Receiver

INSTALLATION

4.1

4.2

Precautions and Hazards

Test Equipment and Tools Required

AND

SETUP

This manual contains setup information for the receiver. For a broader view of setup, refer to the system manual.

Caution

PC boards within this assembly use staticsensitive components.

Follow IC-handling

precautions.

Most internal adjustment can be performed with the receiver chassis pulled forward and with the lid removed.

The receiver's RF and l.o. sections should not need realignment unless poor operation is indicated or if the receive frequency has been changed by more than one MHz.

Test Equipment Required,

also required.

shows required test equipment for setup. Common hand tools are

Table 4-1,

4.3

Table 4-1 Test Equipment Required

item

service monitor frequency counter

digital voltmeter audio distortion analyzer

power supply

(optional) spectrum analyzer (optional) RF millivoltmeter capable of reading 0 dBm at 1 GHz

QPN 263-0305-002

slotted alignment tool Johanson 8777

characteristic

to 1 GHz, IFR model 1200S or equivalent to 1 GHz

Beckman model 330 or equivalent capable of measuring audio distortion to 3000 Hz, Sinadder or equivalent

+12 Vdc at 3 A capable of displaying up to 1 GHz

receiver I/O board for accessing I/O signals

Component and Adjustment Locations

Figure 3-3,

View of Internal Assemblies,

Top

shows the locations of pc boards.

Print Date: 12/05/96

Page: 4-1

+ 52 hidden pages

Glenayre RL-903, RL-903R, RL-903XC User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual