Lectrosonics MM400a - Manual User Manual download pdf (Page 6)

MM400A

CONTROLS AND FUNCTIONS

–10

–20

POWER

MIC JACK

POWER LED

FREQUENCY SELECT

SWITCH COVER PLATE

MODULATION

LEDs

AUDIO

LEVEL

ANTENNA

BATTERY

COMPARTMENT

WARNING! TO PREVENT INTERNAL CORROSION!

If the transmitter is wet (either due to immersion or high levels of perspiration), BEFORE opening any

covers or connectors, carefully blot the transmitter dry with a clean paper towel or cloth. Remove all

moisture. After opening any connector or cover, carefully blot up any remaining moisture that may have

remained around the seal. THIS IS IMPORTANT! DO NOT CLOSE ANY COVER OR CONNECTOR

BEFORE MAKING CERTAIN THERE IS NO MOISTURE IN OR NEAR THE OPENING. After use, it is

important to store the transmitter in a dry place with all access doors and connectors opened to allow

any internal humidity to evaporate. Specifically, open the battery door, the frequency cover plate and

fully unscrew and remove the microphone connector before storing. Do NOT store wet and do NOT store

sealed. If moisture is sealed inside the unit it has nowhere to go other than to chemically react with and

destroy components and the printed circuit board.

POWER ON/OFF SWITCH

There is no on/off switch for this unit. Insert a battery into

the Battery Compartment to turn the unit on and remove

the battery to turn the unit off.

Caution

There will be a thump in the associated receiver when the

transmitter battery is inserted or removed. It is highly recommended

to turn the receiver’s audio off in the main sound prior to inserting

or removing the battery from the MM400A.

POWER LED

The Power LED glows green when the battery is good.

The color changes to red when there is about 30 minutes

of operation left with the recommended lithium battery.

(An alkaline battery will have about 20 minutes of life

left.) When the LED begins to flicker red, there are only

a few minutes of life.

Note

A NiMH battery will give little or no warning when it is depleted. If

you wish to use NiMH batteries in the MM400A, we recommend

trying fully charged batteries in the unit, noting the length of time

that the batteries will run the unit and in the future use somewhat

less than that time to determine when the battery needs to be

replaced.

A weak battery will sometimes cause the POWER LED

to glow green immediately after being put in the unit, but

will soon discharge to the point where the LED will go

red or shut off completely.

MIC JACK

The Microplug (2.5 mm) input on the transmitter accom-

modates 2 wire positive bias lavalieres. A watertight mic

connector is available from Lectrosonics as an assembly

LECTROSONICS, INC.

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Lectrosonics MM400a - Manual User Manual Page 6

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