Logic Mute Control (Automatic Mixing) - Shure MX405 User Manual

Button Behavior
Toggle: Push and release to toggle the mi­
crophone on or off. Mic is active when
powered on.
Toggle: Push and release to toggle the mi­
crophone on or off. Mic is mute when
powered on

Logic Mute Control (Automatic Mixing)

Set DIP Switch 3 up to configure the microphone for logic control applications where audio from the microphone is muted by
an external device, such as an automatic mixer. In this mode, the local mute function of the PUSH button is bypassed (the mi­
crophone always sends audio) and the LED does not respond directly from pushing the button.
As required by the installation specifications, wire the SWITCH OUT conductor in the microphone cable to the automatic mixer
or other TTL logic device. When the talker presses the button on the microphone, it changes the voltage level at the SWITCH
OUT conductor, which signals the device to mute audio for that channel or perform some other function.
To control the LED on the microphone, wire the LED IN conductor to the gate output on the automatic mixer (or any TTL logic
device).
Button Configuration
For logic control operation, DIP Switch 1 determines the button behavior (DIP Switch 2 has no effect).
Button Behavior
Momentary: When pushed, SWITCH OUT (red wire) falls to 0 V. When released,
SWITCH OUT returns to +5 V.
Toggle: Push and release sets SWITCH OUT to 0 V. Push again to toggle back to +5 V.
SWITCH OUT Logic Signal
Push and release sets SWITCH OUT to 0 V.
Push again to toggle back to +5 V.
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DIP Switch Setting
DIP Switch Setting
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