Control Voltage Out - Audio Technica SmartMixer AT-MX341a Installation And Operation Manual

Control Voltage Out

When a microphone channel turns "on," as indicated by a Selected Channel LED on the front
panel, the channel's associated Control Voltage Out goes "high" (+4 VDC). This signal can be
used to light indicator lamps, switch speaker zones on and off, select video cameras, etc. The
control voltage should not be connected directly to an inductive load such as a relay coil, as
damage to the mixer may result. Several interface circuit possibilities are shown in Figure 5.
Equivalent Output
Circuit for Control
Voltage Out
Relay Driver
IN4001
CV
10K
G
Figure 5. Control interface examples.
CONTROL
40
VOLTAGE
GND
RELAY
COIL
+
2N3904
Driving Logic Gates
CV
G
Driving One LED
2v
I
R+40
CV
R
G
Driving Lamps
CV
10 K
2 N 3904
G
+
9