Lectrosonics UM450 - Manual (Page 3)

Frequency Synthesized UHF Belt-Pack Transmitter
Table of Contents
General Technical Description ..............................................................................................................................................................4
Introduction ...........................................................................................................................................................................................4
Digital Hybrid Technology .......................................................................................................................................................................................... 4
UM450 Block Diagram ..........................................................................................................................................................................4
No Pre-Emphasis/De-Emphasis ...........................................................................................................................................................5
Pilot Tone Squelch ................................................................................................................................................................................5
Input Limiter ..........................................................................................................................................................................................5
Wide-Band Deviation ............................................................................................................................................................................5
Batteries, Battery Life and External Power ...........................................................................................................................................5
Frequency Selection .............................................................................................................................................................................5
Antenna.................................................................................................................................................................................................5
Controls and Functions .........................................................................................................................................................................6
Input Jack..............................................................................................................................................................................................6
Power ON/OFF Switch..........................................................................................................................................................................6
Power On LED ......................................................................................................................................................................................6
Audio Level Control...............................................................................................................................................................................6
Modulation LEDs...................................................................................................................................................................................7
Antenna.................................................................................................................................................................................................7
Frequency Select Switches...................................................................................................................................................................7
Adjustable Low Frequency Roll-Off.......................................................................................................................................................7
Belt Clip.................................................................................................................................................................................................7
Battery Installation .................................................................................................................................................................................8
Operating Instructions...........................................................................................................................................................................8
Selecting the Compatibility Mode..........................................................................................................................................................8
Attaching a Microphone and Adjusting Gain.........................................................................................................................................9
Operating Notes....................................................................................................................................................................................9
Adjusting the Transmitter Frequency.....................................................................................................................................................9
5-Pin Input Jack Wiring ........................................................................................................................................................................10
Microphone Cord Termination.............................................................................................................................................................11
TA5F Connector Assembly .................................................................................................................................................................11
Mic Cord Stripping Instructions...........................................................................................................................................................11
Microphone RF Bypassing..................................................................................................................................................................12
Line Level Signals...................................................................................................................................................................................
Wiring Hookups for Different Sources ...............................................................................................................................................13
Works with Servo Inputs Only:............................................................................................................................................................13
Compatible with Servo Inputs and other Lectrosonics Transmitters:...................................................................................................13
Replacement Parts and Accessories..................................................................................................................................................14
UHF Transmitter Antenna Specifications ............................................................................................................................................14
Troubleshooting....................................................................................................................................................................................15
Specifications and Features................................................................................................................................................................17
Service and Repair ...............................................................................................................................................................................18
Returning Units for Repair ..................................................................................................................................................................18
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Rio Rancho, NM 3