Lectrosonics UM190b - Manual (Page 2)

INTRODUCTION
Thank you for selecting the Lectrosonics UM190B belt-pack transmitter. The UM190B
combines over 80 years of engineering experience with the very latest components, in
a design that addresses the most demanding professional applications.
The design of the UM190B 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 UM190B. This is certainly not
the first belt-pack transmitter ever designed, but it is definitely the most thoroughly
engineered unit available.
The UM190B is a rugged, machined aluminum package with a removable, spring
loaded belt clip. The input section provides a correct input tap for virtually any micro­
phone 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 UM190B transmitter is covered in this manual. Companion receivers are
covered in separate manuals.
The UM190B 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
UM190B INPUT JACK WIRING ........................................................................... 9
TROUBLESHOOTING ....................................................................................... 11
SPECIFICATIONS AND FEATURES ................................................................. 12
SERVICE AND REPAIR ..................................................................................... 13
RETURNING UNITS FOR REPAIR ................................................................... 13
WARRANTY ......................................................................................... Back cover
The UM190B transmitter is FCC type accepted under Part 74: 470-608 MHz
2