M185 BELT-PACK TRANSMITTER OPERATING INSTRUCTIONS and trouble-shooting guide LECTROSONICS, INC. Rio Rancho, NM
SPECIFICATIONS AND FEATURES Operating frequencies: 150 to 216 MHz RF Power output: 50 mW Deviation: ±15 kHz (max) Spurious radiation: 55 dB below
SERVICE AND REPAIR If your system malfunctions, you should attempt to correct or isolate the trouble before concluding that the equipment needs repai
LIMITED ONE YEAR WARRANTY The equipment is warranted for one year from date of purchase against defects in materials or workmanship provided it was pu
INTRODUCTION Thank you for selecting the Lectrosonics M185 transmitter. This transmitter represents over 70 years of combined experience in the desi
GENERAL TECHNICAL DESCRIPTION The M185 transmitter is comprised of four major functional subsystems: the input compressor, the mic preamp/gain contr
CONTROLS AND FUNCTIONS LECTROSONICS M185 ON MUTE OFF LEVEL LIMIT MIC LEVEL Figure 2 - M185 Front Panel INPUT JACK The input on the M185 accommodates
CONTROLS AND FUNCTIONS (cont’d) Since the internal circuits are all tightly regulated and the RF output stage has a separate discrete regulator, the
BATTERY REPLACEMENT The M185 transmitter is powered by a standard alkaline 9 Volt battery. It is important that you use ONLY an ALKALINE battery for
OPERATING INSTRUCTIONS 1) Insert the microphone plug into the input jack, aligning the pins; be sure that the connector locks in. 2) Turn the power s
M185 INPUT JACK WIRING The wiring diagrams shown on the attached sheet represent the basic wiring necessary for the most common types of microphones
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
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