Button Configuration - Shure MX405 User Manual

Installation
1 2
Caution: To prevent bending pins, line up key with notch and seat
connector fully before twisting to lock.
Cable
The 20 ft. attached cable is terminated with a 3-pin XLR connector.
For logic applications, open the XLR connector to access the three
unterminated logic conductors.
Wire Color Function
Red
Black
White SWITCH OUT
Orange
Green Logic Ground
Shield Mic Common Ground
MX400DB Pin Assignments
Audio +
Audio −
3-Pin XLR
MX400DP DIP Switches
Caution: Failure to reinstall the setscrew will reduce RF immunity.
3
Switch
1
2
3
4
5
Local Mute Control
The microphone ships configured for local (manual) mute control
(DIP Switch 3 down). In this mode, the PUSH button on the micro-
phone mutes the audio signal at the microphone. Audio is not sent
Audio +
to the audio outputs when muted.
Audio −
In this configuration, the LED color reflects the microphone state,
as controlled by the user with the PUSH button.
LED IN
Microphone Status
Active
Muted
Down (default) Up
Momentary Toggle
Push-to-Mute Push-to-Talk
Local Mute Logic Control
Full Frequency Range Low Cut Filter (attenuates
6dB per octave below 150
Hz)
LED Steady LED Flashes
MX405, 410, 415 MX405R, 410R,
415R
Green Red
Red Off/flashing

Button Configuration

For local mute control operation, use DIP Switches 1 and 2 to con-
figure the button behavior.
Button Behavior SWITCH OUT Logic
Signal
Momentary: push-to-
When pushed,
mute (as shipped). SWITCH OUT (red
wire) falls to 0 V. When
released, SWITCH
OUT returns to +5 V.
Momentary: push-to-talk
Toggle: Push and release Push and release sets
to toggle the microphone SWITCH OUT to 0 V.
on or off. Mic is active Push again to toggle
when powered on. back to +5 V.
Toggle: Push and release
to toggle the microphone
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 ex-
ternal device, such as an automatic mixer. In this mode, the local
mute function of the PUSH button is bypassed (the microphone
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 con-
ductor, 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).
DIP Switch
Setting
5