Motorola ACE3600 RTU - Page 331

Audio Control and Tone (ACT) Module
23-3
POWER
AMPLIFIER
1
POWER
AMPLIFIER
2
DIGITAL AUDIO
RECORD / PLAY
DEVICE
RECORD
INPUT
PLAY
OUTPUT
LOW-LEVEL
AUDIO INPUT
LOW-LEVEL
AUDIO OUTPUT
HIGH-LEVEL
AUDIO INPUT 1
HIGH-LEVEL
AUDIO INPUT 2
HIGH-LEVEL
OUTPUT 1
HIGH-LEVEL
OUTPUT 2
HIGH-LEVEL
OUTPUT 3
HIGH-LEVEL
OUTPUT 4
HIGH-LEVEL
OUTPUT 5
HIGH-LEVEL
OUTPUT 6
COM OUT
COM IN
Control of RTU via
RS-232 line
PRINTER
µC
SPEAKER 1
SPEAKER 2
SPEAKER 3
SPEAKER 4
SPEAKER 5
SPEAKER 6
POWER INPUT
12 VDC
from RTU Power Module
RTU
AUDIO
SOURCE
LOW-LEVEL
AUDIO INPUT
ACT Unit
Isolation
Transformer
FCN6294
Figure 23-2 ACT Module – Simplified Block Diagram