Motorola GTX Manual de serviço - Página 30
Procurar online ou descarregar pdf Manual de serviço para Rádio bidirecional Motorola GTX. Motorola GTX 30 páginas. 900mhz two way mobile radio
Também para Motorola GTX: Manual do utilizador (49 páginas), Manual do utilizador (36 páginas), Manual de instalação (19 páginas), Manual do utilizador (25 páginas)
Imprimir página
Theory of Operation
Transmitter
VOLUME
VOL
CONTROL
ROTARY
ROT1
SWITCH
& LEVEL
ROT2
ENCODER
H FILTER
TXB+
ACC.
AUDIO
RX_AUDIO
CON.
PA
MUTE
INT. SPKR
MIC.
ACC.
PREAMP
MIC_IN
CON.
INT. MIC
28-PIN
CONNECTOR
FROM RF SECTION
2-2
935-941MHz
FRONT-END
1ST MIXER
MODULE
RX_INJ
ANTENNA
SWITCH
PWR_REF
POWER
CONTROL
TX_INJ
POWER
AMPLIFIER
896-902 MHz
TEMPUS_D/A
PWR_REF
RED
YELLOW
HEAR CLEAR
5R
MIC_EN
4 X 4 KEYPAD
ASFIC
DISPLAY/KEYBOARD DRIVER
PARALLEL BUS
ROM 128K
RADIO FUNCTIONAL BLOCK DIAGRAM
68P02948C90-O
GTX/GTX LTR/LTS 2000 Portable Radios Service Manual
RF & AUDIO SECTION
45.1 MHz
2ND MIXER &
IF
DEMODULATOR
889.9-995.9 MHz
16.8 MHz
REFERENCE
OSCILLATOR
16.8 MHZ
PRE-
AMP
SCB4
SCB3
DAC_SEL
D/A
SCB2
SCB1
LOGIC SECTION
SERIAL
8-DIGIT
LCD DISPLAY
EEPROM 4K
VOL_SENSE
RAM 8K
DET_AUDIO
28-PIN
LOCK_DET
CONNECTOR
SYNT_EN
TO LOGIC SECTION
2.1 MHz
MOD_IN
SPI_DATA
SPI_CLCK
SPI BUS
µPROCESSOR
PTT
HC11K1
MONITOR
OPT
LOCK_DET
SYNT_EN
PEND_EN
SCI
ROT1
ROT2
DAC_SEL
February 1997