9
No.
Parts/Ports
Description
3
REC output
Output audio signal from microphone, able
to be connected to an external recording
device.
4
AUX1/AUX2
External audio source connection.
Input connection for equipment, such as
CD/DVD player, tuner, etc.
5
MIC/LINE input
External microphone or other audio device
connection.
The interface is balanced input. Its input
sensitivity can be set via the DIP switch
beside.
6
MIC/LINE DIP
switch
To set the sensitivity and phantom power
output of MIC/LINE input.
7
Power amplifier
interface
External power amplifier connection for two
audio channels.
MCU will transmit audio signal and self-test
signal to power amplifier and receive the
fault status from power amplifier.
8
Spare power
amplifier interface
Spare power amplifier connection.
MCU will transmit audio signal and self-test
signal to power amplifier and receive the
fault status from power amplifier.
9
Call station interface
Remote call station connection.
Transmit audio signal, control data, supply
power between MCU and remote call
stations.
10
Power switch
AC power on/off switch.
11
Main power & fuse
AC power supply connection.
A fuse must be installed in the socket for
over current protection.
Summary of Contents for RK-MCU
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