Glenayre Electronics GL-T8311SA User Manual

DSP Exciter Rev. B: 06/11/98

DSP Exciter (EC)
User Manual

RELEASED

PN 9110.01021

Revision B

Specifications subject to change without notice
Copyright © 1998 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: 06/10/98 Copyright © 1998 Glenayre

DSP Exciter Glenayre Document Number: 9110.01021
Document Change Record Rev. B: 06/11/98

Document Change Record

Issue: 1, Revision A
Date: 11/24/97
Changes: None, Original

Issue: 1, Revision B
Date: 06/11/98
Changes: made 88-us changes to text and figures, created intdex

Copyright © 1998 Glenayre Print Date: 06/10/98

Glenayre Document Number: 9110.01021 DSP Exciter
Rev. B: 06/11/98 Table of Contents

Table of Contents

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

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

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

1.3 Glenayre Locations . . . . . . . . . . . . . . . . . . . . . . 1-1

1.3.1 Product Warranty Information . . . . . . . . . . . . . . . . . . 1-2

d1021_ti.toc

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

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

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

1.3.2 Service Warranty Information . . . . . . . . . . . . . . . . . . 1-2

3.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

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

3.3 Simplified Block-Diagram Description . . . . . . . . . . . . . . 3-1

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 . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.4.1 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.4.2 Power Requirement . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.4.3 Input/Output Connections . . . . . . . . . . . . . . . . . . . . 4-2

4.4.4 Signal Functions . . . . . . . . . . . . . . . . . . . . . . . . . 4-2

4.4.5 Switches and Jumpers . . . . . . . . . . . . . . . . . . . . . . 4-3

4.5 Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4.6 Ultimate Disposition . . . . . . . . . . . . . . . . . . . . . 4-4

4.7 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

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

6.1.1 Reference Source . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

6.1.2 Main Circuit Frequencies . . . . . . . . . . . . . . . . . . . . . 6-1

6.1.3 Controller Interface Functions . . . . . . . . . . . . . . . . . . 6-1

Print Date: 06/10/98 Copyright © 1998 Glenayre Page: -i

DSP Exciter Glenayre Document Number: 9110.01021
Table of Conten t s Rev. B: 06/11/98

6.2 Interface to Controller . . . . . . . . . . . . . . . . . . . . 6-1

6.3 DSP Modulator . . . . . . . . . . . . . . . . . . . . . . . 6-3

6.3.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

6.3.2 DSP Modulator Signal Flow . . . . . . . . . . . . . . . . . . . 6-3

6.3.2.1 Digital Signal Modulator . . . . . . . . . . . . . . . 6-3

6.3.2.2 Digital Quadrature Modulator . . . . . . . . . . . . 6-4

6.3.2.3 Digital-to-Analog Converter . . . . . . . . . . . . . 6-4

6.3.2.4 Read-Only Memory . . . . . . . . . . . . . . . . . 6-4

6.4 IF Stage . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

6.4.1 Filter-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

6.4.2 Mixer-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

6.4.3 Filter-2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

6.4.4 VCO-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

6.4.5 Synthesizer-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

6.5 MCU . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6

6.5.1 Microcontroller Unit (MCU) . . . . . . . . . . . . . . . . . . . 6-7

6.5.2 Digital-to-Analog (D/A) Converter . . . . . . . . . . . . . . . 6-7

6.5.3 8/16-Bit Converter . . . . . . . . . . . . . . . . . . . . . . . . 6-7

6.5.4 Read-Only Memory . . . . . . . . . . . . . . . . . . . . . . . 6-8

6.5.5 VSWR-Fault Detector . . . . . . . . . . . . . . . . . . . . . . 6-8

6.5.6 Alarm Data-to-Logic Conversion . . . . . . . . . . . . . . . . 6-8

6.5.7 Alarm Data-to-Logic Conversion . . . . . . . . . . . . . . . . 6-8

6.6 RF Assemblies . . . . . . . . . . . . . . . . . . . . . . 6-14

6.6.1 RF Stage Location . . . . . . . . . . . . . . . . . . . . . . . 6-14

6.6.2 RF Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . 6-14

6.6.2.1 RF Stage Description . . . . . . . . . . . . . . . . 6-14

6.6.2.2 RF Stage Bands . . . . . . . . . . . . . . . . . . . 6-14

6.6.2.3 RF Stage Signal Flow . . . . . . . . . . . . . . . . 6-14

6.6.2.3.1 Mixer-2 . . . . . . . . . . . . . . . . . . . . . . . . 6-14

6.6.2.3.2 Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-15

6.6.2.3.3 Amplifier . . . . . . . . . . . . . . . . . . . . . . . 6-15

6.6.2.3.4 VCO-2 . . . . . . . . . . . . . . . . . . . . . . . . . 6-15

6.6.2.3.5 Synthesizer-2 . . . . . . . . . . . . . . . . . . . . 6-15

6.7 Voltage Regulator Circuit . . . . . . . . . . . . . . . . . . 6-15

Page: -ii Copyright © 1998 Glenayre Print Date: 06/10/98

Glenayre Document Number: 9110.01021 DSP Exciter
Rev. B: 06/11/98 Table of Contents

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

7.1 Location of Maintenance Procedures . . . . . . . . . . . . . . . 7-1

7.2 Test Equipment Required . . . . . . . . . . . . . . . . . . . 7-1

7.3 VCO-2 Adjustment Procedure . . . . . . . . . . . . . . . . . 7-1

7.3.1 VCO-2 Multichannel Adjustment Procedure . . . . . . . . . . 7-1

7.3.2 VCO-2 Single-Channel Adjustment Procedure . . . . . . . . . 7-1

7.4 Over-The-Link Downloading . . . . . . . . . . . . . . . . . . 7-2

d1021_ti.toc

7.5 On-The-Fly Channel/Mode Changing . . . . . . . . . . . . . . 7-2

7.5.1 Programming Example . . . . . . . . . . . . . . . . . . . . . . 7-3

7.5.1.1 DSP Exciter (2.1) / GL-C2000 (2.3) . . . . . . . . . 7-4

7.5.1.2 DSP Exciter (3.0) / GL-C2000 (3.0) / GL3000 (6.0) . 7-4

7.6 16-Channel Operation . . . . . . . . . . . . . . . . . . . . . 7-4

7.7 On-The-Fly Interface . . . . . . . . . . . . . . . . . . . . . 7-5

7.8 Checkout . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6

7.9 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . 7-6

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

8.1 Exciter/PA Control Chassis . . . . . . . . . . . . . . . . . . . 8-1

8.1.1 Removal Procedure . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.1.2 Reinstallation Procedure . . . . . . . . . . . . . . . . . . . . . 8-1

8.2 Exciter Cover . . . . . . . . . . . . . . . . . . . . . . . . 8-2

8.2.1 Removal Procedure . . . . . . . . . . . . . . . . . . . . . . . . 8-2

8.2.2 Reinstallation Procedure . . . . . . . . . . . . . . . . . . . . . 8-2

8.3 Exciter/Control Board . . . . . . . . . . . . . . . . . . . . . 8-5

8.3.1 Removal Procedure . . . . . . . . . . . . . . . . . . . . . . . . 8-5

8.3.2 Reinstallation Procedure . . . . . . . . . . . . . . . . . . . . . 8-5

8.4 Interface I/O Board . . . . . . . . . . . . . . . . . . . . . . 8-8

8.4.1 Removal Procedure . . . . . . . . . . . . . . . . . . . . . . . . 8-8

8.4.2 Reinstallation Procedure . . . . . . . . . . . . . . . . . . . . . 8-8

8.5 VCO/RF Amplifier Board . . . . . . . . . . . . . . . . . . . 8-9

8.5.1 Removal Procedure . . . . . . . . . . . . . . . . . . . . . . . . 8-9

8.5.2 Reinstallation Procedure . . . . . . . . . . . . . . . . . . . . . 8-9

Print Date: 06/10/98 Copyright © 1998 Glenayre Page: -iii

DSP Exciter Glenayre Document Number: 9110.01021
Table of Conten t s Rev. B: 06/11/98

9 OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9.1 Exciter/PA Control w/ QT-1000 Interface . . . . . . . . . . . . 9-1

9.1.1 Reference Source . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9.1.2 Controller Interface Connector Functions (QT-1000) . . . . . . 9-1

9.1.3 Interface Conversion Functions (QT-1000) . . . . . . . . . . . 9-1

9.1.3.1 Analog-Mode A/D Conversion . . . . . . . . . . . 9-1

9.1.3.2 FSK-Data-Bit Strapping . . . . . . . . . . . . . . . 9-2

9.1.3.3 Channel-Select-Bit Strapping . . . . . . . . . . . . 9-2

9.1.3.4 Mode-Select-Bit Strapping . . . . . . . . . . . . . . 9-2

9.1.3.5 Power Sample D/A Conversion . . . . . . . . . . . 9-2

9.2 Exciter/PA Control with Standard Interface . . . . . . . . . . . . 9-5

9.2.1 Reference Source . . . . . . . . . . . . . . . . . . . . . . . . . 9-5

9.2.2 Controller Interface Connector Functions (Standard) . . . . . . 9-5

9.2.3 Interface Conversion Functions (Standard) . . . . . . . . . . . 9-5

9.2.3.1 Analog-Mode A/D Conversion . . . . . . . . . . . 9-5

9.2.3.2 FSK-Data-Bit Strapping . . . . . . . . . . . . . . . 9-6

9.2.3.3 Channel-Select-Bit Strapping . . . . . . . . . . . . 9-6

9.2.3.4 Mode-Select-Bit Strapping . . . . . . . . . . . . . . 9-6

9.2.3.5 Power Sample D/A Conversion . . . . . . . . . . . 9-6

9.3 Exciter/PA Control with I20 Interface . . . . . . . . . . . . . . 9-6

9.3.1 Reference Source . . . . . . . . . . . . . . . . . . . . . . . . . 9-6

9.3.2 Controller Interface Connector Functions . . . . . . . . . . . . 9-7

9.3.3 I20 Interface Conversion Functions . . . . . . . . . . . . . . . 9-8

9.3.3.1 FSK-Data-Bit Strapping . . . . . . . . . . . . . . . 9-8

9.3.3.2 Channel-Select-Bit Strapping . . . . . . . . . . . . 9-8

9.3.3.3 Mode-Select-Bit Strapping . . . . . . . . . . . . . . 9-9

Page: -iv Copyright © 1998 Glenayre Print Date: 06/10/98

Glenayre Document Number: 9110.01021 DSP Exciter
Rev. B: 06/11/98 List of Figures

List of Figures

Figure 3-1 DSP Exciter Rear View . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

Figure 3-2 DSP Exciter Top View

with Internal Controls and Indicators . . . . . . . . . . . . . . . . . . 3-5

Figure 3-3 DSP Exciter Simplified Functional Diagram . . . . . . . . . . . . . . 3-6

Figure 4-1 DSP Exciter/PA Control Circuit Boards

Interconnection Diagram . . . . . . . . . . . . . . . . . . . . . . . . 4-5

Figure 5-1 Front-Panel Controls and Indicators . . . . . . . . . . . . . . . . . . . 5-2

d1021_ti.lof

Figure 6-1 DSP Exciter RF Stage Functional Diagram . . . . . . . . . . . . . . . 6-2

Figure 6-2 DSP Exciter MCU Circuit Functional Diagram . . . . . . . . . . . . . 6-5

Figure 6-3 DSP Exciter-to-Controller Functional Diagram . . . . . . . . . . . . 6-10

Figure 6-4 DSP Exciter Detailed Functional Diagram . . . . . . . . . . . . . . 6-12

Figure 6-5 DSP Exciter IF-Stage Detailed

Functional Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 6-13

Figure 7-1 On-The-Fly GL-C2000 Control Lines to DSP Exciter . . . . . . . . . 7-5

Figure 8-1 DSP Exciter Chassis Removal

and Reinstallation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-3

Figure 8-2 DSP Exciter Cover Removal

and Reinstallation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-4

Figure 8-3 DSP Exciter Control Board Removal and Reinstallation . . . . . . . . 8-7

Figure 8-4 DSP Exciter External Interface I/O Board

Removal and Reinstallation . . . . . . . . . . . . . . . . . . . . . . 8-10

Figure 8-5 DSP Exciter Interface Board Removal and Reinstallation . . . . . . 8-11

Print Date: 06/10/98 Copyright © 1998 Glenayre Page: -v

DSP Exciter Glenayre Document Number: 9110.01021
List of Figures Rev. B: 06/11/98

Page: -vi Copyright © 1998 Glenayre Print Date: 06/10/98

Glenayre Document Number: 9110.01021 DSP Exciter
Rev. B: 06/11/98 List of Tables

List of Tables

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

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

Table 3-1 Part Numbers of VCO/RF Amplifier Boards . . . . . . . . . . . . . . 3-2

Table 3-2 Part Numbers of Interface Boards . . . . . . . . . . . . . . . . . . . . 3-2

Table 3-3 Part Numbers of Interface I/O Boards . . . . . . . . . . . . . . . . . . 3-3

d1021_ti.lot

Table 3-4 Assembly and Control Board Numbers . . . . . . . . . . . . . . . . . 3-3

Table 4-1 DSP Exciter I/O Connectors . . . . . . . . . . . . . . . . . . . . . . . 4-2

Table 4-2 VT100 Interface Connector J3 Pin Assignments . . . . . . . . . . . . 4-2

Table 4-3 Control Board Connector J6 Pin Assignments . . . . . . . . . . . . . 4-3

Table 4-4 Exciter Control Board Jumper Positions . . . . . . . . . . . . . . . . 4-3

Table 6-1 Exciter RF/Main Circuit Frequencies . . . . . . . . . . . . . . . . . . 6-1

Table 7-1 Deviation and Offset Programming . . . . . . . . . . . . . . . . . . . 7-3

Table 9-1 Interface Board Connector J4 (QT-1000) . . . . . . . . . . . . . . . . 9-3

Table 9-2 Receiver Connector J5 Pin Functions

QT-1000 with External I/O Board . . . . . . . . . . . . . . . . . . . . 9-4

Table 9-3 Remote Select Input vs. Channel (QT-1000) . . . . . . . . . . . . . . 9-4

Table 9-4 Remote Select Input vs. Mode (QT-1000) . . . . . . . . . . . . . . . 9-4

Table 9-5 Interface Board Connector J4 (Standard) . . . . . . . . . . . . . . . . 9-7

Table 9-6 Remote Select Input vs. Channel (standard) . . . . . . . . . . . . . . 9-7

Table 9-7 Remote Select Input vs. Mode (standard) . . . . . . . . . . . . . . . . 9-8

Table 9-8 Interface Board Connector J2 . . . . . . . . . . . . . . . . . . . . . . 9-9

Table 9-9 Interface Board Connector J1 . . . . . . . . . . . . . . . . . . . . . . 9-9

Table 9-10 Remote Select Input vs. Channel (I20) . . . . . . . . . . . . . . . . 9-10

Table 9-11 Remote Select Input vs. Mode (I20) . . . . . . . . . . . . . . . . . . 9-10

Print Date: 06/10/98 Copyright © 1998 Glenayre Page: -vii

DSP Exciter Glenayre Document Number: 9110.01021
List of Tables Rev. B: 06/11/98

Page: -viii Copyright © 1998 Glenayre Print Date: 06/10/98

Glenayre Document Number: 9110.01021 DSP Exciter
Rev. B: 06/11/98 GENERAL

1 GENERAL

1.1 Manual Scope

This manual provides information for the Glenayre DSP exciter and contains information
on exciter connection, setup, and maintenance. Discussions and specifications include the
following:

d1021_s1

• exciter specifications

• relevant part numbers

• setup requirements

• operational theory

• maintenance issues

• QT-1000 interface option

• standard interface option

• I20 interface option.

1.2 Applicable Documents

This manual is incomplete without the document shown in Table 1-1, Applicable
Documents.

Table 1-1 Applicable Documents

Document Part number Description

DSP VDT Menus 9110.00259 This manual describes the features of the

exciter user interface software.

1.3 Glenayre Locations

For an updated list of Glenayre locations, refer to
www.glenayre.com/corporate/contacts/default.asp .

Print Date: 06/10/98 Copyright © 1998 Glenayre Page: 1-1

DSP Exciter Glenayre Document Number: 9110.01021
GENERAL Rev. B: 06/11/98

U.S.A. CANADA
Glenayre Customer Service - RF Glenayre Customer Service - RF
One Glenayre Way 1570 Kootenay Street
Quincy, Illinois 62301 USA Vancouver, BC V5K 5B8 Canada
Phone: [phone] Phone: [phone]
Fax: [phone] Fax: [phone]

UNITED KINGDOM SINGAPORE
Glenayre Electronics (UK) Ltd. Glenayre Electronics Singapore Pte. Ltd.
Unit 22 Challenge House Block 5012 Ang Mo Kio Avenue 5
Sherwood Drive, Bletchley TechPlace II Unit 0503
Milton Keynes, MK3 6JD UK Singapore 2056
Phone: [phone] Phone: [phone]
Fax: [phone] Fax: [phone]

1.3.1 Product Warranty Information

Glenayre warrants to the original purchaser that Glenayre products are free fro m defects in
material or workmanship for a period of two years 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 t he 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 unauthorized
modifications, force majeure, lightning, physical, environmental, or electrical 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 manufactured by Glenayre. Equipment supplied by, but not manufactured by
Glenayre, is subject only to any warranty offered by the manufacturer of said equipment.

1.3.2 Service Warranty Information

Return of a defective item must be authorized by Glenayre prior to shipment. A Return
Authorization number can be obtained fro m Glenayre Customer Service. When requesting
a Return Authorization number , give the serial numb er of the unit. A description of the faul t
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 cus tomer, and shipped via surface mail. If
express shipping is required, the unit will be shipped collect.

Any repair service performed by Glenayre under this limited warranty is warranted to be
free from def ects in ma terial or workman ship for ni nety da ys from the date of rep air. All
other terms of this limited warranty apply to the service warranty.

Page: 1-2 Copyright © 1998 Glenayre Print Date: 06/10/98

Glenayre Document Number: 9110.01021 DSP Exciter
Rev. B: 06/11/98 SPECIFICATIONS

2 SPECIFICATIONS

Refer to Table 2-1, which lists the DSP exciter specifications.

Where possible, EIA or I-EIS A measuring methods were used in determining specifica­tions. Note that some specifications are not addressed by either set of standards or the
prescribed methods were impractical.

d1021_s2

Characteristic Condition Specification

Adjacent-channel noise 20-kHz channel spacing, analog mode,

Spurious output Per ETS 300 11 3, 8.6

RF output power Keyed 250 mW nominal
Carrier frequency stability Steady state, -30° to

Table 2-1 Exciter Specifications

per ETS 300 086, 7.5
20-kHz channel spacing, in FSK mode,

per ETS 300 113, 8.5

12.5-kHz channel spacing, analog mode,
per ETS 300 086, 7.5

12.5-kHz channel spacing, FSK mode,
per ETS 300 113, 8.5

Per ETS 300 08 6, 7.6

+60° C

-70 dBc

-70 dBc

-60 dBc

-60 dBc

-90 dBc

-90 dBc

10 MHz reference, int=0.005 ppm/yr,

ext=0.1 ppm/yr
FSK frequency/modulation stability Relative to carrier frequency stability +/- 10 Hz max
FSK adjustment accuracy +/- 10 Hz
Offset resolution 1 Hz
Number of channels Up to 16, depending on interface board

and controller
Audio input -25 to +10 dBm

Impedance w ith transformer 600 ohm or 5k ohms balanc ed

Audio response Flat, 50 to 2800 Hz +/- 0.5 dB

preemphasized 6 dB per octave, 300 to
3000 Hz at 60% deviation

Audio distortion (1-kHz reference at
60% deviation)

Print Date: 06/10/98 Copyright © 1998 Glenayre Page: 2-1

25-kHz channel spacing Less than 1.5%

+/- 0.75 dB

DSP Exciter Glenayre Document Number: 9110.01021
SPECIFICATIONS Rev. B: 06/11/98

Table 2-1 Exciter Specifications (continued)

Characteristic Condition Specification

Audio response (tracking/units) Level 0.1 dB max

FM hum and noise (1-kHz reference
at 60% deviati on)

25-kHz spacing flat, 15-kHz bandwidth -40 dB
25-kHz channel spacing preemphasized,

-55 dB

300 to 3000 Hz

AM hum and noise -34 dB
Modulation types Analog, 2-level FSK, 4-level FSK avail-

able with some interfaces
Channel spacing step size (kHz) Software-dependent 5, 6.25, 12.5, 20, 25
Emissions FCC 15K0F2D, 16K0F1D, 16K0F3E
Power requirement 22-29 Vdc Less than 3 A
Humidity Noncondensing 0 to 95% relative

External 10-MHz reference input Level 2 Vp-p min

Impedance 50 ohms
Spurious ab ove 8 MHz -65 dBc max

Spurious below 8 MHz -50 dBc max
Weight 4.8 lb (2.2 kg)
Dimensions 8.75 in (22.25 cm) d x 19 in (48.25 cm) w

x 1.75 in (4.5 cm) h

Temperature range Operating -30° to +60° C

Storage -55° to +70° C
Maximum elevation To 10,000 ft (3050 m)

Page: 2-2 Copyright © 1998 Glenayre Print Date: 06/10/98

Glenayre Document Number: 9110.01021 DSP Exciter
Rev. B: 06/11/98 DESCRIPTION

3 DESCRIPTION

3.1 General

The DSP exciter contains a microprocessor that allows remote or local control of the exciter
and consolidates logic for varying degrees of PA control and monitoring through a video
display terminal (VDT). Operating characteristics of the exciter are controlled by the
selection of hardware options. It is frequency-selectable by specifying the appropriate

d1021_s3

3.2 Physical Description

internal frequency-determining hardware and software. It is also capable of commu nicating
with several operating protocols through the proper selection of interface boards.

Refer to Table 3-1, Table 3-2, Table 3-3, and Table 3-4 for pertinent part numbers.

The exciter front panel contains eight LEDs, three adjus tments, and one connector ( also see
section 5). The exciter chassis contains three circuit boards and space for an oscillator (not
used with some controllers).

Refer to Figure 3-1, which shows the exciter rear p anel. The back panel contains three BNC
connectors J3/J7/J8, DB-15 connector J6, and terminal board TB1 as standard items. Other
back-panel connectors vary depending on which interface and I/O boards are installed.
Figure 3-2 shows a top view of the exciter with its cover removed.

The I/O boards comprise the means to connect various controllers to the DSP exciter.

3.3 Simplified Block-Diagram Description

Refer to Figure 3-3 in the following discussion. Inputs from the transmitter controller
usually are one or t wo data bits, two channel-select bits, and keying input. Outputs to the
controller are keying output indicator, various fault outputs, forward-power sample, and
reflected-power sample.

Print Date: 06/16/98 Copyright © 1998 Glenayre Page: 3-1

DSP Exciter Glenayre Document Number: 9110.01021
DESCRIPTION Rev. B: 06/11/98

Table 3-1 Part Numbers of VCO/RF Amplifier Boards

VCO/RF-

transmitter
model

amplifier board
frequency band
(MHz)

VCO board
assembly part
No.

transmitter
model

GL-T85/8601 929-941 263-0082-072 GL-T8311

936-948 263-0082-070 142-152 2100.00089

GL-T8411
GL-T8611

VCO/RF­amplifier board
frequency band
(MHz)

VCO board
assembly part
No.

138-148 2100.00088

924-936 263-0082-069 147-157 2100.00090

GL-T85/8600 900-960 (wb) 263-0082-051/052/

157-167 2100.00092

053/054/055/062
948-960 263-0082-055 152-162 2100.00091
936-948 263-0082-054 167-175 2100.00094
929-941 263-0082-062 162-172 2000.00558

138-148 2100.00088

GL-T8341
GL-T8541
GL-T8641

924-936 263-0082-053 GL-T8311EC
445-470 2000.00189 142-152 2100.00089

GL-T8411EC
GL-T8311E
GL-T8411E

GL-T83/8531 320-330 263-0082-049 147-157 2100.00090
GL-T83/8521 275-285 263-0082-047 157-167 2100.00092

152-162 2100.00091
167-175 2100.00094
162-172 2000.00558

Table 3-2 Part Numbers of Interface Boards

DSP exciter-to-controller interface boards Interface board part No.

QT-1000 interface bd 265-0082-007
Standard interface bd 263-0082-036
I20 interface bd 265-0082-015

Page: 3-2 Copyright © 1998 Glenayre Print Date: 06/16/98

Glenayre Document Number: 9110.01021 DSP Exciter
Rev. B: 06/11/98 DESCRIPTION

Table 3-3 Part Numbers of Interface I/O Boards

Interface I/O board (control type) Interface I/O board part No.

QT-1000 Interface I/O bd 261-0082-003
Standard Interface I/O bd 261-0082-004
I20 Interface I/O bd 2000.00436

d1021_s3

Table 3-4 Assembly and Control Board Numbers

Exciter assembly No. Control board No.

0100.02020 (88 us) 2000.02090

Print Date: 06/16/98 Copyright © 1998 Glenayre Page: 3-3

DSP Exciter Glenayre Document Number: 9110.01021
DESCRIPTION Rev. B: 06/11/98

v0343.hgl

Figure 3-1 DSP Exciter Rear View

Page: 3-4 Copyright © 1998 Glenayre Print Date: 06/16/98

v0344.hgl

Glenayre Document Number: 9110.01021 DSP Exciter
Rev. B: 06/11/98 DESCRIPTION

d1021_s3

Figure 3-2 DSP Exciter Top View

with Internal Controls and Indicators

Print Date: 06/16/98 Copyright © 1998 Glenayre Page: 3-5

DSP Exciter Glenayre Document Number: 9110.01021
DESCRIPTION Rev. B: 06/11/98

v0251.hgl

Figure 3-3 DSP Exciter Simplified Functional Diagram

Page: 3-6 Copyright © 1998 Glenayre Print Date: 06/16/98

Glenayre Document Number: 9110.01021 DSP Exciter
Rev. B: 06/11/98 INSTALLATION AND SETUP

4 INSTALLATION AND SETUP

4.1 Precautions and Hazards

Caution

Pc boards within this assembly use static-sensitiv e

d1021_s4

4.2 Test Equipment and Tools Required

components. Follow IC-handling precautions.

Caution

The exciter contains internal memory which is
used to characterize exciter operation. Upon
exciter replacement, ensure that replacement
exciter contains appropriate items in it s memory.

Common hand tools are required for disassembly and reassembly. An RFI-immune
voltmeter may be required for voltage measurement. An in-line current meter may also be
necessary for troubleshooting. A 50-ohm test load rated for 5 watts or more, an RF
wattmeter rated and scaled appropriately, and RF coaxial cables are useful when verifying
RF output.

4.3 Component and Adjustment Locations

Figure 3-2, DSP Exciter Top View with Internal Controls and Indicators, shows the
location of assemblies, internal user-adjustable controls, and I/O locations. Note: most
adjustments are performed via the front-panel VT100 interface.

4.4 Inst a lla ti on

4.4.1 Inspection

Inspect exciter to ensure air flow is not obstructed and cables and wires are securely
fastened to their respective connectors.

4.4.2 Power Requirement

The DSP exciter, when used as a component of a transmitter, draws its power from system
wiring. Current draw is less than three amperes at 22 to 29 volts. It is normally powered by
the transmitter power supply but can be powered by an auxiliary supply.

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DSP Exciter Glenayre Document Number: 9110.01021
INSTALLATION AND SETUP Rev. B: 06/11/98

4.4.3 Input/Output Connections

Figure 3-1 shows the locations of I/O connectors; Ta bl e 4 -1 lists I/O connectors and
describes their functions. Normally the exciter is delivered as part of an entire transmitter
and has already been installed in a rack, with all connections already made, except for
connections to equipment that was not installed in the rack before shipment . If I/O con nec­tions are required, refer to the system-interconnect diagram and other instructions in the
transmitter manual.

4.4.4 Signal Functions

See Table 4-1, which references other tables that describe pin-by-pin functions of multipin
connectors, for details. Figure 4-1 shows interconnections among internal asse mblies.

Table 4-1 DSP Exciter I/O Connectors

Additional

Stencil/Connector Description

Detail

VT100 INTERFACE: J3 VT100 interface to VDT (front) Table 4-2
RF OUT: J3 RF out, on frequency Figure 6-1
QT-1000 interface I/O J4 Interface to QT-1000 interface board Table 9-1
QT-1000 interface I/O J5 DB-9 connector, to receiver Table 9-2
Standard interface I/O J4 Interface to standard interface I/O board Table 9-1
I20 (C2000) interface I/O J2 Interface to C2000 interface I/O board Table 9-8
I20 (C2000) interface I/O J1 Interface to C2000 interface I/O board Table 9-9
PA CONTROL: J6 Connects to PA Table 4-3
ISOLATOR IN: J7 VSWR input from PA Figure 3-1
10 MHZ IN: J8 External reference input from interface Figure 3-1
+26 VDC: TB1 Exciter input power, +22-29 Vdc Figure 3-1

Table 4-2 VT100 Interface Connector J3 Pin As signments

J3-X (front) Signal Description

2 TXD Transmit data line
3 RXD Receive data line
5 GND Ground
1,4,6,7,8,9 Not used

Page: 4-2 Copyright © 1998 Glenayre Print Date: 06/10/98

Glenayre Document Number: 9110.01021 DSP Exciter
Rev. B: 06/11/98 INSTALLATION AND SETUP

Table 4-3 Control Board Connector J6 Pin Assignments

J6-X Signal Description J6-X Signal Description

1 A/D1+ Multiplex analog input from PA

No. 1 multiplexer

2 A/D3+ Multiplex analog input from PA

No. 3 multiplexer

d1021_s4

3 AGC REF+ AGC reference voltage output to

9 A/D2+ Multiplex analog input from PA

No. 2 multiplexer

10 A/D4+ Multiplexed analog input from PA

No. 4 multiplexer

11 PA FAULT PA fault input, HI=fault

PA, 1-12 Vdc
4 PA GROUND No connection 12 PA GROUND No connection
5 PA GROUND No connection 13 INP UT

SELECT 1

One of four select outputs to PA
multiplexers, LO=20 digit enabled
for mux input decoder

6 INPUT

SELECT 2

One of four select outputs to PA

multiplexers, LO=2

1

14 INPUT

SELECT 3

One of four select outputs to PA
multiplexers, LO=22 digit enabled
for mux input decoder

7 KEY OUT Key output to PA 15 A UX LATCH

ENABLE

Latch-enable output to PA multi­plexers, LO=mux input decoder
reads the three select inputs. Not
used with E and EC models.

8 REF SAMPLE Reflected-power sample input from PA

4.4.5 Switches and Jumpers

Figure 3-2 shows the locations of user-adjustable switches and jumpers. See Table 4-4 for
a list of software-related jumper positions found on the exciter/control board. No switches
are available to maintenance personnel.

Table 4-4 Exciter Control Board Jumper Positions

Jumper Pre version 2.10 software Version 2.10/later software

JW1 Set to A for external 10-MHz oscillator Set to A for external 10 MHz oscillator

Set to B for internal 10-MHz oscillator Set to B for internal 10 MHz oscillator

JW2 Set to A for password protection Set to A for password protection

Set to B to bypass password protection Set to B to bypass password protection

JW3 Set to A for external VSWR protection Always set to B (for internal and/or external

Set to B for internal VSWR protection

VSWR protection)

JW5 must be set to A must be set to A

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