Tone Remote Control Board Block Diagram - Motorola ASTRO Spectra Instruction Manual

TO
RADIO
AUX_RX_AUD VOLUME
ADJUST
TO
RADIO
TX AUDIO
BUFFER
JUMPER
P101
TAPE_OUT
TO
ACCESSORY
CONNECTOR
SPKR_UNMUTE
RADIO_SEL
100K
DET_AUDIO
FROM
RADIO
FILT_AUDIO
TRUNK TONES
LOW PASS
FILTER

Tone Remote Control Board Block Diagram

66
DRIVER/
RECEIVER
RX_MUTE
RADIO_SEL
TRUNK_TONES
TONE_DETECT
AGC_RESET
3
AGC_INHIBIT
LOGIC
SERIAL BUS
&
GT/FT
CONTROL
LPTT
RESET
WL_MUTE
DECODE
FILTER
TONES
&
LIMITER
FILTER_CLK
BUFFER
9.6V
A +
6.5V
BUFFER
5.8V
POWER 5.0V
ROUTING
4.8V
FROM
CH_MIC
SWB +
CONTROL 3.6V
HEAD
2.2V
BUFFER
BUFFER
RX_MUTE
RS232
DATA LINES
ACIM
CONNECTION
WIRELINE
GT/FT
LPTT
GUARD TONE
BANDPASS FILTER
FILTER-CLK
GUARD TONE
LEVEL
NOTCH FILTER
ADJUST
WIRELINE
VB WL_MUTE
GUARD TONE LEVEL ADJUST
NOTCH FILTER & FILTER
BUFFER
LINE 2 +
TX_AUDIO
WIRELINE
LINE 2 - INTERFACE
TONE_DETECT
AGC_ RESET
AGC_INHIBIT
CLOSE
5.8V
6.5V
AGC
3.8V
RX_AUDIO
LINE 1 +
TX_AUDIO
WIRELINE
LINE 1 -
INTERFACE
BUFFER
LINE
DRIVER
MAEPF-26235-A
FOR 4-WIRE
OPERATION
OPEN
FOR 4-WIRE
OPERATION
6881086C22-B