Motorola ASTRO Digital Spectra Plus Detailed Service Manual page 436

Index-2
E
encryption modules
circuit description A-2
Spectra A-1
Spectra Plus A-1
encryption voltages, command board 3-13
errors
09/10 A-2
09/90 A-2
power-up self-check
Spectra 4-2
Spectra Plus 4-10
external bus serial communications, command board 3-
11
F
figures listing 1-xv
first IF, receiver back-end 3-6
first VCO frequency generation, synthesizer 3-3
flash programming, command board 3-13
frequency bands, radio 2-1
front-end receiver assembly
components 2-1
description 2-6
G
gain stages, power amplifier assembly 2-5
glossary of terms Glossary-1
H
handling precautions 4-1
I
ignition sense circuits, control-head assembly 2-4
introduction, manual 1-1
K
keyload failure A-2
L
LEDs
backlight 2-3
status 2-3
list
component location diagrams 7-1
figures 1-xv
schematics 7-1
tables 1-xvi
troubleshooting charts 5-1
waveforms 6-1
loop filter, synthesizer 3-5
September 5, 2008
M
manual
introduction 1-1
notations 1-2
organization 1-1
revisions 1-ii
MCU system clock
Spectra 3-28
Spectra Plus 3-44
microcontroller and support ICs, command board 3-8
microphone audio, command board 3-12
mode
analog 2-2
ASTRO 2-2
model chart
Spectra
800MHz 3-xxxiv
motorcycle 15 Watt (ranges 1 and 2) 3-xxiv
motorcycle 15 Watt (ranges 3 and 3.5) 3-xxv
UHF 10-25 Watt 3-xxix
UHF 20-40 Watt 3-xxx
UHF 50-110 Watt 3-xxxii
VHF 10-25 Watt 3-xxvi
VHF 10-25/50-110 Watt 3-xxvii
Spectra Plus
800MHz 3-xli
UHF 20-40 Watt 3-xxxvii
UHF 50-110 Watt 3-xxxix
VHF 25-50/50-110 Watt 3-xxxv
model numbering scheme 3-xxiii
N
notations, manual 1-2
O
ordering replacement parts B-1
organization, manual 1-1
oscillator, voltage control (VCO)
800 MHz band 3-50
description 3-47
UHF band 3-49
VHF band 3-47
overview, radio 2-1
P
parts lists 7-1
parts, ordering replacement B-1
phase modulator, synthesizer 3-5
power
distribution
DC 2-8
synthesizer 3-6
routing, B+ 2-9
power amplifier
800 MHz band
15-Watt 3-77
35-Watt 3-77
6881076C25-E