M187 BELT-PACK TRANSMITTER OPERATING INSTRUCTIONS and trouble-shooting guide LECTROSONICS, INC. Rio Rancho, NM
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 transmitter
Belt-Pack Transmitter TROUBLESHOOTING Before going through the following chart, be sure that you have a good battery in the transmitter the red pow
SPECIFICATIONS AND FEATURES Operating frequencies: 150 to 216 MHz RF Power output: 50 mW Deviation: ±15kHz (max) Spurious radiation: 55 dB below
Belt-Pack Transmitter SERVICE AND REPAIR If your system malfunctions, you should attempt to correct or isolate the trouble before concluding that the
LIMITED ONE YEAR WARRANTYThe equipment is warranted for one year from date of purchase against defects in materials or workmanship provided it was pur
INTRODUCTION Thank you for selecting the Lectrosonics M187 transmitter. This transmitter repre-sents over 70 years of combined experience in the
Belt-Pack Transmitter GENERAL TECHNICAL DESCRIPTION The M187 transmitter is comprised of four major functional subsystems: the input compressor, t
CONTROLS AND FUNCTIONS LECTROSONICS M187 ON MUTE OFF LEVEL LIMIT MIC LEVEL INPUT JACK The input on the M187 accommodates virtually every lavalier,
Belt-Pack Transmitter Since the internal circuits are all tightly regulated and the RF output stage has a separate discrete regulator, the transmitter
BATTERY REPLACEMENT The M187 transmitter is powered by a standard alkaline 9 Volt battery. It is important that you use ONLY an ALKA-LINE battery fo
Belt-Pack Transmitter OPERATING INSTRUCTIONS 1) Insert the microphone plug into the input jack, aligning the pins; be sure that the connector lock
MICROPHONE CORD TERMINATION 1 2 3 45 VIEW FROM SOLDER SIDE OF PINS 0.3" 0.15" Heatshrink Tubing TA5F Connector Assembly Mic Cord Stripping
Belt-Pack Transmitter M187 INPUT JACK WIRING The wiring diagrams shown on the attached sheet represent the basic wiring necessary for the most
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