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INTRODUCTION

Thank you for selecting the Lectrosonics UM195B belt-pack transmitter.  The
UM195B combines over 80 years of engineering experience with the very latest
components, in a design that addresses the most demanding professional applica-
tions.

The design of the UM195B was the direct result of numerous conversations with
users and dealers across the US.  The specific concerns and needs brought up in
these conversations led directly to the development of the operational features
offered on the UM195B.  This is certainly not the first belt-pack transmitter ever
designed, but it is definitely the most thoroughly engineered unit available.

The UM195B is a rugged, machined aluminum package with a removable, spring
loaded belt clip.  The input section provides a correct input tap for virtually any
microphone or line level audio source.  5 Volts is available on the input connector to
power electret mics with either positive or negative bias.  Level indicating LEDs are
provided on the control panel to make level settings quick and accurate, without
having to view the receiver.  The battery compartment accepts any 9 Volt alkaline or
lithium battery and makes a positive connection via self-adjusting contacts.  The
antenna is a detachable, locking 1/4 wavelength flexible wire that connects to a 50
Ohm port on the transmitter.

Only the UM195B transmitter is covered in this manual.  Companion receivers are
covered in separate manuals.  The UM195B will operate with any 190 Series
Lectrosonics receiver on a matching frequency.

TABLE OF CONTENTS

INTRODUCTION .................................................................................................. 2

GENERAL TECHNICAL DESCRIPTION ............................................................. 3

CONTROLS AND FUNCTIONS .......................................................................... 4

BATTERY INSTALLATION ................................................................................... 6

OPERATING INSTRUCTIONS ............................................................................ 7

OPERATING NOTES ........................................................................................... 7

MICROPHONE CORD TERMINATION ............................................................... 8

5-PIN INPUT JACK WIRING ................................................................................ 9

TROUBLESHOOTING ....................................................................................... 11

SPECIFICATIONS AND FEATURES ................................................................. 12

SERVICE AND REPAIR ..................................................................................... 13

RETURNING UNITS FOR REPAIR ................................................................... 13

WARRANTY ......................................................................................... Back cover

The UM195B transmitter is FCC type accepted under Part 74:  470-608 MHz

Summary of Contents for UM195B

Page 1: ...UM1 95B UHF BELT PACK TRANSMITTER LECTROSONICS INC Rio Rancho NM OPERATING INSTRUCTIONS and trouble shooting guide...

Page 2: ...the input connector to power electret mics with either positive or negative bias Level indicating LEDs are provided on the control panel to make level settings quick and accurate without having to vie...

Page 3: ...ndor are fast enough to keep high frequency transient distortion at a low level and the low frequency compandor uses slower time constants reducing low frequency distortion to well below that of a con...

Page 4: ...ng use the LED brightness will also decrease When the LED is barely visible there will still be 30 minutes or more operating time remaining Since the internal circuits are all tightly regulated and th...

Page 5: ...with the 3dB point adjustable from 35Hz to 150Hz The actual roll off frequency will vary somewhat according to the low frequency response of the mic capsule being used The low frequency roll off contr...

Page 6: ...rtment press outward on the cover door in the direction of the arrow as shown in the drawing Only firm sliding pressure is needed to open and close the battery door Swing the door open and take note o...

Page 7: ...G NOTES The AUDIO LEVEL control knob should not be used to control the volume of your sound system or recorder levels This gain adjustment matches the transmitter gain with the user s voice level and...

Page 8: ...ructions Caution Do not allow the shield wire to touch any metal part of the connector shell The shield wire is the antenna on VHF models and poor operating range will result Shield Wire Crimp Tabs Ru...

Page 9: ...them sensitive to RF which can cause problems with the microphone transmitter compatibility If the electret microphone is not designed properly for use with wireless transmitters it may be necessary t...

Page 10: ...The normal hookup for line level signals is Signal Hot to pin 5 Signal Gnd to pin 1 pin 4 jumped to pin 1 and pin 3 jumped to pin 1 This gives a 40dB attenuator that allows signal levels much higher t...

Page 11: ...F 1 Transmitter mic gain set too low 2 Defective microphone or cord NO SOUND OR LOW SOUND LEVEL RECEIVER MOD LEVEL LEDs ARE ON 1 Receiver output level set too low 2 Receiver output is disconnected cab...

Page 12: ...l LEDs indicate modulation level 20dB below limiting and at the onset of limiting Controls 2 position OFF ON slide switch Front panel knob adjusts audio gain Audio Input Jack Switchcraft 5 pin locking...

Page 13: ...ere is a charge for an exact quotation We will be happy to quote approximate charges by phone for out of warranty repairs RETURNING UNITS FOR REPAIR You will save yourself time and trouble if you will...

Page 14: ...rosonics Inc or an authorized dealer shipping costs prepaid within one year from the date of purchase This Limited Warranty is governed by the laws of the State of New Mexico It states the entire liab...

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