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