Glenayre Electronics GL-T8600-CN Users Manual

DSP Exciter Issue 1, Rev. I: 01/15/97

DSP Exciter With Wideband Option

USER MANUAL
PN 9110.0 0172 (old part number = 916-T70A-003)
REV I
RELEASED

Specifications subject to change without notice
Copyright © 1997 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-ret rieva l system— without writte n perm issio n of Glenayre.

Print Date: 02/18/97 Copyright © 1997 Glenayre

DSP Exciter Glenayre Document Number : 9110.00172
Document Change Record Issue 1, Rev. I: 01/15/97

Document Change Record

Issue: 1
Date: 05/09/95
Changes: none, original

Issue: Rev B
Date: 02/07/96
Changes: added wi deband info rmation

Issue: Rev C
Date: 02/29/96
Changes: changed jumpers, d rawi ng main bd

Issue: Rev D
Date: 4/25/96
Changes: changed VCO-2 status reading

Issue: Rev E
Date: 5/14/96
Changes: added Ove r-The-Link an d On-Th e-F l y inf orm at io n

Issue: Rev F
Date: 5/23/96
Changes: added one RU space for reinstallation and net channel change time for setup

Issue: Rev G
Date: 9/03/96
Changes: changed PA fault input pin 11 on Table 4-4

Issue: Rev H
Date: 9/20/96
Changes: revised chapter 4 jumper information, added Table 4-5

Issue: Rev I
Date: 01/15/97
Changes: added and changed VCO board numbers in Tabl e 3 -1

Copyright © 1997 Glenayre Print Date: 02/18/97

Glenayre Document Number: 9110.00172 DSP Exciter
Issue 1, Rev. I: 01/15/97 Table of Contents

Table of Contents

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

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

1.1.1 Applicable Docu ment s . . . . . . . . . . . . . . . . . . . . . . 1-1

1.2 Manual Sections . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.3 Exciter Identification . . . . . . . . . . . . . . . . . . . . . 1-1

2 SPECIFICATIO NS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

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

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

sec_1.toc

3.2 Physical Descript ion . . . . . . . . . . . . . . . . . . . . . 3-1

3.3 Simplified Blo ck-D i agram Descri pti on . . . . . . . . . . . . . . 3-3

4 INSTALL ATI ON 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 . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

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

4.4.2 Power Requirement . . . . . . . . . . . . . . . . . . . . . . . . 4-2

5 OPERATIO N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

6 THEORY OF OPERATI ON . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

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

5.1 Front-Panel Contro ls and Indicators . . . . . . . . . . . . . . . 5-1

5.2 Operating Instructions . . . . . . . . . . . . . . . . . . . . . 5-1

6.1 Exciter/PA Cont rol . . . . . . . . . . . . . . . . . . . . . . 6-1

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

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

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

6.2 Interface to Controller . . . . . . . . . . . . . . . . . . . . . 6-3

6.2.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3

6.2.2 Interface Conversi on Functions . . . . . . . . . . . . . . . . . 6-3

Print Date: 02/19/97 Copyright © 1997 Glenayre Page: -i

DSP Exciter Glenayre Document Number : 9110.00172
Table of Contents Issue 1, Rev. I: 01/15/97

6.3 DSP Modulator . . . . . . . . . . . . . . . . . . . . . . . 6-4

6.3.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4

6.3.2 DSP Modulator Signal Flow . . . . . . . . . . . . . . . . . . . 6-4

6.4 IF Stage . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

6.4.1 Mixer-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

6.4.2 Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

6.4.3 VCO-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

6.4.4 Synthesizer-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

6.5 MCU . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8

6.5.1 Microcontroller Unit (MCU ) . . . . . . . . . . . . . . . . . . . 6-8

6.5.2 Digital-to-Analog (D/A) Converter . . . . . . . . . . . . . . . 6-9

6.5.3 8/16-Bit Converter . . . . . . . . . . . . . . . . . . . . . . . . 6-9

6.5.4 Read-Only Memory . . . . . . . . . . . . . . . . . . . . . . . 6-9

6.5.5 VSWR-Fault Detector . . . . . . . . . . . . . . . . . . . . . 6-14

6.5.6 Alarm Data-to-Logic Conversion . . . . . . . . . . . . . . . 6-14

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

6.6.1 RF Stage Loc ation . . . . . . . . . . . . . . . . . . . . . . . 6-14

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

6.7 Voltage Regulator Circuit . . . . . . . . . . . . . . . . . . 6-16

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

7.1 Location of Mainten ance Procedu res . . . . . . . . . . . . . . 7-1

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

7.3 VCO-2 Adjustm ent Proced ure . . . . . . . . . . . . . . . . . 7-1

7.3.1 VCO-2 Multichanne l Adjustme n t Procedure . . . . . . . . . . 7-1

7.3.2 VCO-2 Single-Cha nnel Adjust men t Procedure . . . . . . . . . 7-1

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

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

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

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

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

8 CHEC KOUT AND TROUBL ESHOO TING . . . . . . . . . . . . . . . . . . 8-1

8.1 CHECKOUT . . . . . . . . . . . . . . . . . . . . . . . . 8-1

8.2 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . 8-1

Page: -ii Copyright © 1997 Glenayre Print Date: 02/19/97

Glenayre Document Number: 9110.00172 DSP Exciter
Issue 1, Rev. I: 01/15/97 Table of Contents

9 REMOVAL AND REINST AL LAT ION . . . . . . . . . . . . . . . . . . . . 9-1

9.1 Exciter/PA Control Ch as sis . . . . . . . . . . . . . . . . . . . 9-1

9.1.1 Removal Procedure . . . . . . . . . . . . . . . . . . . . . . . . 9-1

9.1.2 Reinstallation Procedure . . . . . . . . . . . . . . . . . . . . . 9-1

9.2 Exciter Cover . . . . . . . . . . . . . . . . . . . . . . . . 9-2

9.2.1 Removal Procedure . . . . . . . . . . . . . . . . . . . . . . . . 9-2

9.2.2 Reinstallation Procedure . . . . . . . . . . . . . . . . . . . . . 9-2

9.3 Exciter/Control Board . . . . . . . . . . . . . . . . . . . . . 9-5

9.3.1 Removal Procedure . . . . . . . . . . . . . . . . . . . . . . . . 9-5

sec_1.toc

9.3.2 Reinstallation Procedure . . . . . . . . . . . . . . . . . . . . . 9-5

9.4 Interface Board . . . . . . . . . . . . . . . . . . . . . . . 9-8

9.4.1 Removal Procedure . . . . . . . . . . . . . . . . . . . . . . . . 9-8

9.4.2 Reinstallation Procedure . . . . . . . . . . . . . . . . . . . . . 9-8

9.5 VCO/RF Amplifier B oard . . . . . . . . . . . . . . . . . . . 9-8

9.5.1 Removal Procedure . . . . . . . . . . . . . . . . . . . . . . . . 9-9

9.5.2 Reinstallation Procedure . . . . . . . . . . . . . . . . . . . . . 9-9

10 OPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1

10.1 Exciter/PA Cont rol with QT-1000 Interface . . . . . . . . . . . 10-1

10.1.1 Reference Source . . . . . . . . . . . . . . . . . . . . . . . . 10-1

10.1.2 Controller Interface Connector Functions . . . . . . . . . . . 10-1

10.1.3 QT-1000 Interface Conversion Functions . . . . . . . . . . . 10-1

10.2 Exc i te r/PA Co n t rol wit h St an d ard Int erf ace . . . . . . . . . . . 10-5

10.2.1 Reference Source . . . . . . . . . . . . . . . . . . . . . . . . 10-5

10.2.2 Controller Interface Connector Functions . . . . . . . . . . . 10-5

10.2.3 Standard Interfa ce Conversio n Function s . . . . . . . . . . . 10-5

10.3 E xc i te r/PA Con t rol with I20 Interface . . . . . . . . . . . . . 10-8

10.3.1 Reference Source . . . . . . . . . . . . . . . . . . . . . . . . 10-8

10.3.2 Controller Interface Connector Functions . . . . . . . . . . . 10-8

10.3.3 I20 Interface Conversion Functions . . . . . . . . . . . . . . 10-9

Print Date: 02/19/97 Copyright © 1997 Glenayre Page: -iii

DSP Exciter Glenayre Document Number : 9110.00172
Table of Contents Issue 1, Rev. I: 01/15/97

Page: -iv Copyright © 1997 Glenayre Print Date: 02/19/97

Glenayre Document Number: 9110.00172 DSP Exciter
Issue 1, Rev. I: 01/15/97 List of Figures

List of Figures

Figure 1-1 DSP Exciter Isometric View . . . . . . . . . . . . . . . . . . . . . . . 1-2

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 F unctional Diagram . . . . . . . . . . . . . . 3-6

Figure 4-1 DSP Exciter/PA Control Circuit Boards

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

Figure 5-1 F ront -Pan el C ontrol s and Indicat ors . . . . . . . . . . . . . . . . . . . 5-2

sec_1.lof

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

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

Figure 6-3 DSP Exciter-to-C o ntroller Functio nal 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-T he-Fl y C20 00 Control Lines to DSP Exciter . . . . . . . . . . . . 7-5

Figure 9-1 DSP Exciter Chassis Removal

and Reinstallation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3

Figure 9-2 DSP Exciter Cover Removal

and Reinstallation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4

Figure 9-3 DSP Exciter Control Board Removal and Reinstallation . . . . . . . . 9-7

Figure 9-4 DSP Exciter External Interface I/O Board

Removal and Reinstallation . . . . . . . . . . . . . . . . . . . . . . 9-10

Figure 9-5 DSP Exciter Interf ace Board Removal and Reinstallation . . . . . . . 9-11

Print Date: 02/19/97 Copyright © 1997 Glenayre Page: -v

DSP Exciter Glenayre Document Number : 9110.00172
List of Figures Issue 1, Rev. I: 01/15/97

Page: -vi Copyright © 1997 Glenayre Print Date: 02/19/97

Glenayre Document Number: 9110.00172 DSP Exciter
Issue 1, Rev. I: 01/15/97 List of Tables

List of Tables

Table 1-1 Manual Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

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

Table 3-1 Part Numbers of VCO/R F Ampli f ier Bo ard s . . . . . . . . . . . . . . . 3 -1

Table 3-2 Part Numbers of Interfac e Boa rd s . . . . . . . . . . . . . . . . . . . . 3 -2

Table 3-3 Part Numbers of Interfac e I/O Boa rd s . . . . . . . . . . . . . . . . . . 3- 2

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

Table 4-1 Test Equipment Required . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

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

sec_1.lot

Table 4-3 VT100 Interface Connector J3 Pin Assignments . . . . . . . . . . . . . 4- 3

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

Table 4-5 Exciter Control Board Jum per Posi tio ns . . . . . . . . . . . . . . . . . 4-4

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

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

Table 10-1 Interface Board Connector J4 (QT-1000). . . . . . . . . . . . . . . . .10-3

Table 10-2 Receiver Connector J5 Pin Functions

(QT-1000 with external I/O board) . . . . . . . . . . . . . . . . . . . .10-4

Table 10-3 Remote Select Input vs. Channel (QT-1000) . . . . . . . . . . . . . . .10-4

Table 10-4 Remote Select Input vs. Mode (QT-1000) . . . . . . . . . . . . . . . . 10-4

Table 10-5 Interface Board Connector J4 (Standard) . . . . . . . . . . . . . . . . . 10-7

Table 10-6 Remote Select Input vs. Channel (standard) . . . . . . . . . . . . . . .10-7

Table 10 -7 Remot e Selec t In put vs. Mod e (stan da rd ) . . . . . . . . . . . . . . . .10-8

Table 10-8 Interface Board Connector J1. . . . . . . . . . . . . . . . . . . . . . 10-10

Table 10-9 Interface Board Connector J2. . . . . . . . . . . . . . . . . . . . . . 10-11

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

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

Print Date: 02/19/97 Copyright © 1997 Glenayre Page: -vii

DSP Exciter Glenayre Document Number : 9110.00172
List of Tables Issue 1, Rev. I: 01/15/97

Page: -viii Copyright © 1997 Glenayre Print Date: 02/19/97

Glenayre Document Number: 9110.00172 DSP Exciter
Issue 1, Rev. I: 01/15/97 GENERAL

1 GENERAL

1.1 Manual Scope

This manual is intended for use as a technical reference guide to the Glenayre DSP exciter
and contains information on exciter connection, setup, and maintenance.

1.1.1 Applicable Documents

Applicable Glenay re documen ts are listed in the applicable system manu a l.

sec_1

1.2 Man ual Sections

Refer to Table 1-1, Manual Contents. Also refer to table of contents in this manual.

Table 1-1 Manual Contents

section No. and title contents

1 General this section
2 Specificati ons exciter specifications

Refer to F igure Figure 1-1, DSP Exciter Isometric View, for an overall view of the
exc iter.

3 Descriptions listing of options and assemblies covered, simplified description, physical

4 Installation and Setup exciter installation, setup, and lists of connections
5 Operation list, descript ion , and locati on of operat o r cont rols an d indi cat ors
6 Theory of Operation assembly-level description of exciter operation
7 Maintenance exciter maintenance
8 Checkout and Troubleshooting exciter checkout and troubleshooting
9 Removal and Reinstallation procedures for removing and reinstalling exciter and exciter assemblies
10 Options l ist and disc u ssi on of user select able opt ions

1.3 Excite r Ide nt ific ation

description, simplified block theory of operation

Print Date: 02/19/97 Copyright © 1997 Glenayre Page: 1-1

DSP Exciter Glenayre Document Number : 9110.00172
GENERAL Issue 1, Rev. I: 01/15/97

v0250.hgl

Figure 1-1 DSP Exciter Isometric View

Page: 1-2 Copyright © 1997 Glenay re Print Date: 02/19/97

Glenayre Document Number: 9110.00172 DSP Exciter
Issue 1, Rev. I: 01/15/97 SPECIFICATIONS

2 SPECIFICATIONS

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

Where po ssible , EIA or I-EI S A m easu ring m ethod s w ere use d i n det ermini ng spec ifica ­tions. Note that some specifications are not addressed by either set of standards or the
prescribed methods were impractical.

Table 2-1 Exciter Specifications

sec_2

characteristic condition specification

adjacent-channel noise 25-kHz channel spacing, in analog mode -85 dBc

25-kHz channel spacing, in FSK mode -75 dBc

alternate channel noise 25-kHz channel spacing -95 dBc

spurious -90 dBc
operating frequ enc y ran g e determine d by installed VCO/RF boa rd refer to Table 3- 1
RF output powe r keyed 250 mW nominal
carrier frequency stability steady state, -30° to

FSK frequency/modulation stability relative to carrier fre que ncy stabil it y +/- 10 Hz max
FSK adju stm en t accura cy +/- 10 Hz
analog offse t reso lu tio n 1 Hz
number of channels up to 8, depending on interface board and

+60° C

10-MHz reference, int=0.005 ppm/yr,
ext=0.1 ppm/ yr

controller

frequency spread 3 MHz at 900 MHz (12 MHz wideband

option)

7.5 MHz at 450 MHz
5 MHz at 150 MHz

audio input level -25 to +10 dBm

impedance with transform er 600 ohm or 5 kohms balanced

audio respon se flat, 50 to 2800 Hz; not referenced to 1

kHz; 60% deviation
preemphasized 6 dB per octav e, 30 0 to

3000 Hz; 60% deviation

Print Date: 02/19/97 Copyright © 1997 Glenayre Page: 2-1

+/-0.5 dB

+/-0.75 dB

DSP Exciter Glenayre Document Number : 9110.00172
SPECIFICATIONS Issue 1, Rev. I: 01/15/97

Table 2-1 Exciter Specifications (continued)

characteristi c c ondi tion specificatio n

audio distortion (1-kHz refere nce at

25-kHz channel spacing l es s than 1.5%

60% de viation)

audio response (tracking between
units)

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

level 0.1 dB max
delay 2 usec max
25-kHz spacing flat, 15-kHz bandwidth -40 dB
25-kHz channel spacing preemphas ized,

-55 dB

300 to 3000 Hz

AM hum and noise standard -34 dB
modulation types analog, 2-level FSK, 4-level FSK avail-

able with some interfaces
channel spacing 6.25 kHz
audio - back w a rd co m pa t ibil i ty standa r d
emissions FCC 15K0F2D, 16K0F1D, 16K0F3E

power requireme nt 22-29 Vdc less than 3 A
humidity noncondensing 0 to 95% relative

external 10-MHz referen ce inpu t level 2Vp-p min

impedance 50 ohms
spurious above 8 MHz -65 dBc max

spurious below 8 MHz -50 dBc max
weight 4.8 lb (2.2 kg)
dimensions 8.75 in (2 2.25 cm) d x 1 9 in (48.25 cm) w

x 1.75 in (4.5 cm) h

temperature range operating (nonderated) -30° to +60° C

storage -55° to +70° C
maximum elevation to 10,000 ft (3050 m)

Page: 2-2 Copyright © 1997 Glenay re Print Date: 02/19/97

Glenayre Document Number: 9110.00172 DSP Exciter
Issue 1, Rev. I: 01/15/97 DESCRIPTION

3 DESCRIPTION

3.1 Introduction

The DSP exciter contains a microprocessor that allows remote or local control of the exciter
and consolidates logic for vary ing 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
interna l frequ ency determining hardware an d soft ware. It is a lso cap able of c ommunica ting
with several ope rat ing protoc ol s thro u gh the proper sele ctio n of int erf ace boards.

sec_3

3.2 Physical Description

The exciter fr ont pan el of one R U (1.75 in) i n he igh t cont ai ns e ight LEDs, two adjustments ,
and one connector (also see section 5). The exciter chassis is nine inches deep and contains
three circuit board s and space for an oscilla tor (not used wit h some contro llers).

Refer to Table 3-1, Part Numbers of VCO/RF Amplifier Boards, which shows
subassemblies used for various transmitter operating ranges.

transmitter model

GL-T85/8601 929-941 263-0082-072 265-0082-001

GL-T85/8600 900-960 (wb) 263-0082-051/052/053/054/

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

control board
VCO/RF-amplifier board
frequency band (MHz)

936-948 263-0082-070 265-0082-001
924-936 263-0082-069 265-0082-001

948-960 263-0082-055 265-0082-001

VCO board assemb ly part
No.

055/062

assembly part

No.

265-0082-024/032

936-948 263-0082-054 265-0082-001
929-941 263-0082-068 265-0082-001
924-936 263-0082-053 265-0082-001

GL-T8541 445-470 263-0084-003 not yet available
GL-T83/85 31 320-330 263-0082-049 265-0082-001
GL-T83/85 21 275-285 263-0082-047 265-0082-001
GL-T84/8611 167-175 2100.00094 265-0082-02 4

162-172 2100.00093 265-0082-02 4

Print Date: 02/19/97 Copyright © 1997 Glenayre Page: 3-1

DSP Exciter Glenayre Document Number : 9110.00172
DESCRIPTION Issue 1, Rev. I: 01/15/97

Table 3-1 Part Numbers of VCO/RF Amplifie r Bo ards (continued)

control board

transmitter model

VCO/RF-amplifier board
frequency band (MHz)

VCO board assemb ly part
No.

assembly part
No.

157-167 2100.00092 265-0082-024
152-162 2100.00091 265-0082-024
147-157 2100.00090 265-0082-024
142-152 2100.00089 265-0082-024
138-148 2100.00088 265-0082-024

Refer to Table 3-2, Part Numbers o f Interface Boards.

Table 3-2 Part Numbers of Interface Boards

DSP exciter-to-contro ller interface bo ard s interface board part No.

QT-1000 interface bd 265-0082-007
standar d Interface bd 263-0082-03 6
I20 interface bd 265-0082-032

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

Refer to Table 3-3, Part Numbers of Interface I/O Boards, wh ich sho ws inte rface a nd I/
O board part numbers. T he I/O board s comprise the mean s to connect vario us controlle rs
to the DSP exciter

..

Table 3-3 Part Numbers of Interf ace I/O Boards

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

QT-1000 Interf ace I/O bd 261-0082-003
Standard Interface I/O bd 261-0082-004
I20 Interface I/O bd pending

Page: 3-2 Copyright © 1997 Glenay re Print Date: 02/19/97

Glenayre Document Number: 9110.00172 DSP Exciter
Issue 1, Rev. I: 01/15/97 DESCRIPTION

Table 3-4 Assembly and Control Board Numbers

exciter assem bl y No. control board No .

(wb) 2100.00085 265-0082-032
265-0082-021 265-0084-024

3.3 Simplified Block-Diagram Description

Refer to Figure 3-3, DSP Exciter Simplified Functional Diagram, in the following

sec_3

discussion. Inputs from the transmitter controller usually are one or two data bits, two
channel-select bits, and keying input. Outputs to the controller are keying output indicator,
various f au lt out put s, forward - pow e r sam pl e, and re fle ct ed- po w er sample.

Print Date: 02/19/97 Copyright © 1997 Glenayre Page: 3-3

DSP Exciter Glenayre Document Number : 9110.00172
DESCRIPTION Issue 1, Rev. I: 01/15/97

v0343.hgl

Figure 3-1 DSP Exciter Rear View

Page: 3-4 Copyright © 1997 Glenay re Print Date: 02/19/97

Glenayre Document Number: 9110.00172 DSP Exciter
Issue 1, Rev. I: 01/15/97 DESCRIPTION

v0344.hgl

sec_3

Figure 3-2 DSP Exciter Top View

with Internal C ontrols and Indicators

Print Date: 02/19/97 Copyright © 1997 Glenayre Page: 3-5

DSP Exciter Glenayre Document Number : 9110.00172
DESCRIPTION Issue 1, Rev. I: 01/15/97

v0251.hgl

Figure 3-3 DSP Exciter Simplified Functional Diagram

Page: 3-6 Copyright © 1997 Glenay re Print Date: 02/19/97

Glenayre Document Number: 9110.00172 DSP Exciter
Issue 1, Rev. I: 01/15/97 INSTALLATION AND SETUP

4 INSTALLATION AND SETUP

4.1 Precautions and Hazards

Caution

PC boards within this assembly use
static-sensitive components. Follow
IC-handling precautions.

sec_4

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

4.2 Test Equipment and Tools Required

Table 4-1, Test Equipment Required, lists required test equipment. Common hand tools

may also be required for most proced u res.

item d escri ption

tuning tool Johanson 8777 or equivalent
RF power meter Bird model 8327 or equivalent with appropriate RF adapters
voltmeter Fluke model 77 DVM or equivalent
RF dummy load 50-ohm load

Table 4-1 Test Equipment Required

Caution

4.3 Component and Adjustment Locations

Figure 3-3, DSP Exciter Simplified Functional Diagram, s ho ws the location of assem-

blies, i nterna l user-a dju stable cont rols , and I/O locat ions. Note that mos t adjust men ts are
perfo rm ed via th e front-pane l VT100 i nte rface.

4.4 Installation

4.4.1 Inspection

Inspect exciter to ensure air flow is not obstructed and cables and wires are securely
fastened to their respecti ve conn ec tors.

Print Date: 02/19/97 Copyright © 1997 Glenayre Page: 4-1

DSP Exciter Glenayre Document Number : 9110.00172
INSTALLATION AND SETUP Issue 1, Rev. I: 01/15/97

4.4.2 Power Requirement

The DS P exciter, when used as a compone nt of a transmitter, dra ws its power from system
wiring. Current draw is less than three amperes at 22 to 29 volts. It is normally powered by
the transmitte r pow er suppl y bu t can be powe red by an auxiliary suppl y.

4.4.3 Input/Output Connections

Figure 3-3, DSP Exciter Simplified Functional Diagram, shows the locations of I/O

connectors; Table 4-2, DSP Exciter I/O Connectors, l ists I/O conne ctors and describes
their functi ons. Norma lly the exciter is d elivered as part of an entire transmitt er and ha s
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 connections are
required, re fer to the syst em -in t erco n nec t dia gra m and othe r instru ct ion s in the tran sm it ter
manual.

4.4.4 Signal Functions

See Table 4-2, DSP Exciter I /O Connectors, which referen ce s oth er tables that describe
pin-by-pin functions of multipin connectors. Figure 4-1, DSP Exciter/PA Control

Circuit Boards Interconnection Diagram, shows interconnections among internal

assemblies.

Table 4-2 DSP Exciter I/O Connectors

additional

stencil/connector description

VT100 INTERFACE: J3 VT100 interface to VDT (front) Table 4-3
RF OUT: J3 RF out, on frequency Figure 6-1
QT-1000 interface I/O J4 interface to QT-1000 interface board Table 10-1
QT-1000 interface I/O J5 DB-9 connector, to recei ver Table 10-2
standa rd int erface I /O J 4 i n terface to st anda rd int erfa c e I /O bo ard Table 10-1
GL-C2000 interface I/O J4 interface to GL-C2000 interface I/O board
PA CONTROL : J6 connects to PA Table 4 -4
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

detail

Page: 4-2 Copyright © 1997 Glenay re Print Date: 02/19/97

Glenayre Document Number: 9110.00172 DSP Exciter
Issue 1, Rev. I: 01/15/97 INSTALLATION AND SETUP

Table 4-3 VT100 Interface Connector J3 Pin Assignments

J3-X (front) signal descripti on

2 TXD trans mi t data line
3 RXD receive data line
5GND ground
1,4,6,7,8,9 not used

sec_4

Table 4-4 Control Board Connector J6 Pin Assignments

J6-X signal description J6-X signal description

1 A/D 1+ mu ltiplex analog

input from PA No. 1
multiplexer

2 A/D 3+ mu ltiplex analog

input from PA No. 3
multiplexer

3 AGC REF+ G C reference voltage

4 PA GROUND no connection 12 PA GROUND no connection
5 PA GROUND no connection 13 INPUT

6 INPUT

SELECT 2/
KEY OUT

7 INPUT

SELECT 4/
KEY OUT

output to PA, 1-12 Vdc

one of four select out­puts to PA multiplexers,

1

LO=2

one of four select out­puts to PA multiplexers,
not used

9 A/D2+ multiplex analog input

from PA No. 2 multi­plexer

10 A/D4+ mul tiplexed analog input

from PA No. 4 multi­plexer

11 PA FAUL T PA fault input, HI=fault

one of four se lect outp uts

SELECT 1

14 INPUT

SELECT 3

15 AUX LATCH

ENABLE

to PA multiplexers,
LO=2
mux input decoder

one of four se lect outp uts
to PA multiplexers,
LO=2
mux input decoder

latc h-en able out put to PA
multiplexers, LO=mux
input de cod er read s the
three select inputs

0

digit enabled for

2

digit enabled for

8 REF SAMPLE reflected power sample

inp u t fr om PA

4.4.5 Switches and Jumpers

Figure 3-2, DSP Exciter Top View with Internal Controls and Indicators, shows the

locations of user-adjustable switches and jumpers. Refer to Table 4-5 for a lis t of software
related jumper positions found on the exciter/control board. No switches are available to
maintenance personnel.

Print Date: 02/19/97 Copyright © 1997 Glenayre Page: 4-3