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Control voltage out – Audio-Technica AT-MX351 User Manual

Page 12

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CV

G

R

Driving One LED

I

2v

R+40

Driving Lamps

2N3904

+

CV

10K

G

G

CV

Driving Logic Gates

Equivalent Output
Circuit for Control
Voltage Out

CONTROL
VOLTAGE

40

GND

Relay Driver

2N3904

IN4001

+

CV

10K

RELAY
COIL

G

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). See chart on page
12 for pin connection. 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 below.

Figure 5. Control interface examples.

13

CV

G

R

Driving One LED

I

2v

R+40