Motorola ASTRO Digital Spectra Plus

Index-5
6881076C25-E September 5, 2008
waveforms
ASTRO Spectra 6-2
ASTRO Spectra Plus 6-7
TX signal path, VOCON board
Spectra 3-21
Spectra Plus 3-42
U
UHF specifications 3-xliv
V
vacuum fluorescent
display driver 2-3
voltage source 2-3
VCO (voltage-controlled oscillator assembly) 2-6
VCO troubleshooting
800 MHz band 4-18
Spectra 4-12
UHF band 4-15
VHF band 4-13
VCO/buffer/divider assembly 2-1
vehicle interface ports 2-4
VHF specifications 3-xliii
vocoder bootstrap, VOCON board, Spectra 3-24
vocoder memory map, VOCON board, Spectra 3-26
vocoder section, VOCON board
Spectra 3-17
Spectra Plus 3-39
VOCON board assembly
asynchronous buses
Spectra 3-22
Spectra Plus 3-43
components 2-1
controller bootstrap
Spectra 3-22
Spectra Plus 3-43
controller memory map, Spectra 3-24
controller section
Spectra 3-15
Spectra Plus 3-38
description 2-7
DSP system clock
Spectra 3-28
Spectra Plus 3-44
MCU system clock
Spectra 3-28
Spectra Plus 3-44
power-up/power-down sequence
Spectra 3-28
Spectra Plus 3-46
RX signal path
Spectra 3-18
Spectra Plus 3-41
signals, Spectra 3-29
SPI bus
Spectra 3-24
Spectra Plus 3-44
theory of operation
Spectra 3-15
Spectra Plus 3-38
TX signal path
Spectra 3-21
Spectra Plus 3-42
vocoder bootstrap, Spectra 3-24
vocoder memory map, Spectra 3-26
vocoder section
Spectra 3-17
Spectra Plus 3-39
voltage regulators, Spectra Plus 3-45
VOCON Plus board assembly 2-1
voltage control oscillator (VCO)
800 MHz band 3-50
description 3-47
UHF band 3-49
VHF band 3-47
voltage regulators, Spectra Plus 3-45
voltage-controlled oscillator (VCO) assembly
800 MHz radios 2-7
description 2-6
UHF radios 2-7
VHF radios 2-6
W
warranty information 2-xix
waveforms listing 6-1
waveforms, troubleshooting
ASTRO Spectra 6-2
ASTRO Spectra Plus 6-7