Lectrosonics LMa User Manual

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Frequency-Agile UHF Belt-Pack Transmitter

Rio Rancho, NM

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Table of Contents

Introduction .............................................................................................................................................................................................4

Digital Hybrid Technology .....................................................................................................................................................................4

Frequency Agility...................................................................................................................................................................................4

Wide-Band Deviation ............................................................................................................................................................................4

Long Battery Life ...................................................................................................................................................................................4

Servo Bias Input and Wiring .................................................................................................................................................................4

Input Limiter ..........................................................................................................................................................................................5

No Pre-Emphasis/De-Emphasis ...........................................................................................................................................................5

Pilot Tone Squelch ................................................................................................................................................................................5

Circulator/Isolator ..................................................................................................................................................................................5

LMa Block Diagram ...............................................................................................................................................................................5

Controls and Functions .........................................................................................................................................................................6

Input Jack ..............................................................................................................................................................................................6

Power ON/OFF Switch ..........................................................................................................................................................................6

Power LED ............................................................................................................................................................................................6

Frequency Select Switches ...................................................................................................................................................................6

Modulation LEDs ...................................................................................................................................................................................6

Audio Level ...........................................................................................................................................................................................6

Antenna .................................................................................................................................................................................................6

Belt Clip .................................................................................................................................................................................................6

Battery Installation .................................................................................................................................................................................7

Operating Instructions ...........................................................................................................................................................................8

Selecting the Compatibility Mode ..........................................................................................................................................................8

Attaching a Microphone or Musical Instrument and Adjusting Audio Levels .........................................................................................8

Adjusting the Frequency .......................................................................................................................................................................9

5-Pin Input Jack Wiring ........................................................................................................................................................................10

Installing the Connector: .....................................................................................................................................................................10

Microphone Cable Termination

for Non-Lectrosonics Microphones .............................................................................................................................................11

Wiring Hookups for Different Sources ...............................................................................................................................................12

Compatible Wiring for Both Servo Bias Inputs and Earlier Transmitters: ............................................................................................12

Simple Wiring - Can ONLY be used with Servo Bias Inputs: ...............................................................................................................12

Microphone RF Bypassing ..................................................................................................................................................................13

Line Level Signals ...............................................................................................................................................................................13

Wiring Diagram for MI33A Instrument Cable ......................................................................................................................................13

Specifications and Features ................................................................................................................................................................15

Troubleshooting ....................................................................................................................................................................................16

Service and Repair ...............................................................................................................................................................................17

Returning Units for Repair ..................................................................................................................................................................17

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