Lectrosonics UM500 - Manual (Page 3)

Frequency-Agile UHF Belt-Pack Transmitter
Thank you for selecting the Lectrosonics UM500 frequency agile, belt-pack transmitter. The UM500 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 UM500 was the direct result of numerous conversations with users, staging and touring companies
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 UM500. Two hundred fifty six frequencies are user selectable
to alleviate interference problems in traveling venues, and the low frequency roll-off is user adjustable to adapt to
varying acoustic environments and preferences.
The UM500 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 of bias voltage is available
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 battery and makes a positive connection via self-adjusting contacts. The antenna is a detachable,
locking 1/4 wavelength flexible galvanized steel cable that connects to a 50 Ohm SMA port on the transmitter.
Only the UM500 transmitter is covered in this manual. Companion receivers are covered in separate manuals. The
UM500 will operate with any 500 Series Lectrosonics receiver in the same frequency group.
TABLE OF CONTENTS
GENERAL TECHNICAL DESCRIPTION ................................................................................................. 4
GENERAL ............................................................................................................................................ 4
DIGITAL HYBRID TECHNOLOGY ..................................................................................................... 4
NO PRE-EMPHASIS/DE-EMPHASIS .................................................................................................. 4
PILOT TONE SQUELCH ..................................................................................................................... 4
WIDE-BAND DEVIATION ..................................................................................................................... 4
INPUT LIMITER ................................................................................................................................... 5
LONG BATTERY LIFE ......................................................................................................................... 5
FREQUENCY AGILITY ........................................................................................................................ 5
ANTENNA ............................................................................................................................................ 5
CONTROLS AND FUNCTIONS ............................................................................................................... 6
INPUT JACK ........................................................................................................................................ 6
POWER ON/OFF SWITCH .................................................................................................................. 6
POWER ON LED ................................................................................................................................. 6
AUDIO LEVEL CONTROL ................................................................................................................... 6
AUDIO LEVEL ...................................................................................................................................... 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
MICROPHONE CORD TERMINATION .................................................................................................. 10
5-PIN INPUT JACK WIRING .................................................................................................................. 11
RF BYPASSING ................................................................................................................................. 11
LINE LEVEL SIGNALS ...................................................................................................................... 12
WIRING HOOKUPS FOR DIFFERENT SOURCES ........................................................................... 12
TROUBLESHOOTING ............................................................................................................................ 13
SPECIFICATIONS AND FEATURES ................................................................................................. 14
LIMITED ONE YEAR WARRANTY ........................................................................................................ 16
SERVICE AND REPAIR ......................................................................................................................... 16
Rio Rancho, NM – USA
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