Digital Spectra Functional Block Diagram (Models W3, W4, W5, W7, And W9); Figure 10-1. Digital Spectra Models W3, W4, W5, W7, And W9 Functional Block Diagram - Motorola ASTRO SPECTRA Service Manual

10-2

10.1 Digital Spectra Functional Block Diagram (Models W3, W4, W5, W7, and W9)

HIGH-POWER PA
ANTENNA
CONNNECTOR
TX RX
DIRECTIONAL
COUPLER/
DETECTOR
TX RX
COAXIAL
CABLE
TO
LPF/ RX
FRONT-END
ANTENNA SW
RECEIVER
BOARD
COAXIAL
CABLE
FROM
VCO
BOARD
RIBBON
CABLE
FROM
COMMAND
BOARD
FUSE
DC POWER
CABLE BATT CABLE (GRN)
CHASSIS
IGN. CABLE (ORG)
GND
TO POSITIVE SPEAKER
TERMINAL OF
VEHICLE
BATTERY
REMOTE MOUNT MODELS
VACUUM
VF VOLTAGE SERIAL BUS
FLUORESCENT
SOURCE INTERFACE
11-CHARACTER
HIGH VOLTAGE
MICROPROCESSOR
VF DRIVER
EEPROM
CONTROL HEAD (REMOTE MOUNT)
(W9 PUSHBUTTON MODEL)
February 3, 2003
MID/LOW-POWER PA
ANTENNA
CONNNECTOR
RX
TX
TO
LPF/ RX FRONT-END
ANTENNA SW RECEIVER
BOARD
TX
DIRECTIONAL
COUPLER/
DETECTOR
LOW-POWER
MID-
POWER
FROM
TX
VCO
BUFFER
BOARD
RIBBON
CABLE
FROM
COMMAND
BOARD
VIP
J2
REAR ACCESSORY
IN/OUT
CONNECTION
P2
FUSE
FUSE
DC POWER
CABLE
IGNITION
CABLE
DASH MOUNT MODELS TO
CHASSIS COMMAND
GND BOARD
TO POSITIVE
TERMINAL OF
VEHICLE
BATTERY
DASH
REMOTE
INTERCONNECT
INTERCONNECT
BOARD BOARD
FUSE
FUSE
MICROPHONE
VIP IN/OUT
REMOTE
INTERCONNECT
BOARD
VACUUM SERIAL BUS
SERIAL BUS
FLOURESCENT INTERFACE
INTERFACE
8 CHARACTER
MICRO-
HIGH VOLTAGE
MICRO-
PROCESSOR
VF DRIVER PROCESSOR
CONTROL HEAD (REMOTE MOUNT) CONTROL HEAD (DASH MOUNT)
(W5/W7 PUSHBUTTON AND W4 ROTARY MODELS)
(W5/W7 PUSHBUTTON AND W4 ROTARY MODELS)

Figure 10-1. Digital Spectra Models W3, W4, W5, W7, and W9 Functional Block Diagram

Functional Block Diagrams and Connectors: Digital Spectra Functional Block Diagram (Models W3, W4, W5, W7, and W9)
FRONT-END RECEIVER BOARD
MIXER
COAXIAL
FROM
CABLE
POWER PREAMP PRESELECTOR
PA
RX
(COAXIAL CABLE)
INJECTION
FILTER
TO TX
POWER TX BUFFER RX BUFFER
PA
DIVIDER VCO
VCO BOARD
TO
POWER
PA REGULATOR
COMMAND BOARD
HANDHELD
INTERCONNECT
BOARD
8-CHARACTER
VACUUM
FLOURESCENT DISPLAY
DISPLAY
DISPLAY DRIVER
HIGH VOLTAGE
SWITCHES
VF DRIVER
W3 HANDHELD CONTROL HEAD
IF AMP MIXER
109.2MHz
4 POLE
XTAL
L/C
450Khz
ABACUS
FILTER
IC
L/C
REF
2.1MHz
LO
16.8MHz
SYNTHESIZER PRESCALER
XTAL
REF
TUNE
MOSI
RF BOARD
REF
MOSI
TUNE
INPUT
INPUT
INTERCONNECT
POWER
D/A AUDIO
CONTROL/
IC PA
SERIAL
BUS
INTERFACE
FROM
INTERCONNECT
BOARD
MOSI
MODULATION OUT
2.4MHz REF
DSP
SUPPORT
DIGITAL RX IN
CIRCUIT
MODULE
MICROCONTROL
SBI
UNIT
(MCU)
AND
SUPPORT LOGIC IC
(SLIC)
DATA IN
DIGITAL SIGNAL
PROCESSOR
DATA OUT
(DSP)
RAM ROM
RAM ROM EEPROM
VOCON BOARD
D OUT
D OUT
SBI
ODC
TO
BOARD OR
DIRECTLY
TO W9
CONTROL
HEAD
ENCRYPTION
BOARD
(OPTIONAL)
MBEPF-23553-B
6881076C20-E