Controls And Functions - Lectrosonics M175 Operating Instructions And Troubleshooting Manual

The MIC JACK is a locking micro jack that supplies "phantom power" for electret microphones such as the
Lectrosonics M130, M140 and the HM142V and HM152V headset models. Insert the microphone cord plug into the
jack and rotate it clockwise to lock it . It is important that the plug be securely locked, since the microphone cord
serves as the antenna for the transmitter.
The POWER ON/OFF switch turns the power on and off. The switch should be left in the off position when the
transmitter is not in use. When the switch is in the on position, the battery will be drained even though the transmitter
is not being used.
The BATTERY INDICATOR LAMP will light when the transmitter is turned on and will stay lit as long as the battery is
good. As the battery voltage drops, the lamp will grow dim and finally go out.
The GAIN ADJUST is a recessed screwdriver adjustment used to match the gain of the transmitter to different
microphones, individual voices or other audio inputs such as tape deck outputs.
The AUDIO MUTE SWITCH (M175-LS only) is a toggle type on-off switch used to shut off the audio signal without
shutting off the RF carrier of the transmitter.
(Note: The M175DC, Digital Code Squelch version is operationally identical to the standard M175.)
LECTROSONICS
PWR
OFF
MIC
DIGITAL
4

CONTROLS AND FUNCTIONS

LECTROSONICS
M175
M175-DC
ON ON
PWR
OFF
MIC
LEVEL
MIC
CODE
Audio Switch
Battery Indicator Lamp
Power ON/OFF Switch
Mic Level Adjust
+
MIC
Microphone Jack
LEVEL
–
Belt Clip
AUDIO
OFF
ON
PWR
OFF
+
MIC
LEVEL
–
MIC
LECTROSONICS
M175-LS