Lectrosonics UM250b Manuel d'utilisateur

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Page 1 - UM250B

UM250B FREQUENCY-AGILE UHF BELT-PACK TRANSMITTER OPERATING INSTRUCTIONS and trouble-shooting guide LECTROSONICS, INC. Rio Rancho, NM

Page 2 - TABLE OF CONTENTS

MICROPHONE CORD TERMINATION 1 2 3 45 VIEW FROM SOLDER SIDE OF PINS 0.3" 0.15" Heatshrink Tubing TA5F Connector Assembly Mic Cord Strippin

Page 3 - INTRODUCTION

UHF Belt-Pack Transmitter 5-PIN INPUT JACK WIRING The wiring diagrams shown on the next page represent the basic wiring necessary for the mos

Page 4 - DUAL BAND COMPANDOR

RF BYPASSING 2 WIRE MIC 3 WIRE MIC Some mics require RF protection to keep the radio signal from affecting the capsule, even though the transmit

Page 5 - UHF Belt-Pack Transmitter

UHF Belt-Pack Transmitter A6U UHF ANTENNA 33323121222324252627282930after cutting to length. Frequency Blocks Colored sleeve Black cap This is a fu

Page 6 - CONTROLS AND FUNCTIONS

TROUBLESHOOTING Before going through the following chart, be sure that you have a good battery in the transmitter. It is important that you follow t

Page 7 - THE BELT CLIP

UHF Belt-Pack Transmitter SERVICE AND REPAIR If your system malfunctions, you should attempt to correct or isolate the trouble before co

Page 8 - Press outward on the

SPECIFICATIONS AND FEATURES Operating frequencies: 470 to 608 MHz, 614 to 806 MHz Frequency selection: 256 frequencies in 100kHz steps RF Power o

Page 9 - OPERATING NOTES

UHF Belt-Pack Transmitter This page intentionally blank. Rio Rancho, NM – USA 17

Page 10 - MICROPHONE CORD TERMINATION

LIMITED ONE YEAR WARRANTY The equipment is warranted for one year from date of purchase against defects in materials or workmanship provided i

Page 11 - 5-PIN INPUT JACK WIRING

TABLE OF CONTENTS INTRODUCTION ... 3 GENERAL TECHN

Page 12 - LINE LEVEL SIGNALS

UHF Belt-Pack Transmitter INTRODUCTION Thank you for selecting the Lectrosonics UM250B frequency agile, belt-pack transmit-ter. The U

Page 13 - A6U UHF ANTENNA

GENERAL TECHNICAL DESCRIPTION The UM250B transmitters are comprised of a number of functional sub-systems as shown in the block diagram be

Page 14 - TROUBLESHOOTING

UHF Belt-Pack Transmitter NO PRE-EMPHASIS/DE-EMPHASIS The signal to noise ratio of the 200 system is high enough to preclude the n

Page 15 - SERVICE AND REPAIR

LF ROLL-OFF ADJUST FREQUENCY 1.6M 100K FREQUENCY ADJUST ANTENNA OFF ON –20 0 LECTROSONICS UM250B LEVEL AUDIO 01 2 3 4 5 6 789A B C D E F 01

Page 16 - SPECIFICATIONS AND FEATURES

UHF Belt-Pack Transmitter MODULATION LEDS Indicate the proper setting of the MIC LEVEL control. “-20” LED -- Flickers or glows when suffici

Page 17 - UHF Belt-Pack Transmitter

BATTERY INSTALLATION The transmitter is powered by a standard alkaline or lithium 9 Volt battery. It is important that you use ONLY a LITHIUM

Page 18 - LIMITED ONE YEAR WARRANTY

UHF Belt-Pack Transmitter 7) While speaking or singing at the same voice level that will actually be used, observe the MOD

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