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Summary of Contents for Lectrosonics LM
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Page 1: Operating Instructions
FREQUENCY-AGILE UHF BELT-PACK TRANSMITTER ™ Featuring Digital Hybrid Wireless Technology (US Patent Pending) OPERATING INSTRUCTIONS LECTROSONICS, INC. Rio Rancho, NM, USA www.lectrosonics.com... - Page 2 LECTROSONICS, INC.
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Page 3: Table Of Contents
The input jack is a standard Lectrosonics 5-pin type for use with electret lavalier mics, dynamic mics and line level signals. LEDs are provided on the LM front panel to make quick and accurate level settings without having to view the receiver. The battery compartment accepts any 9 volt battery (alkaline or lithium recommended) and makes a positive connection via self-adjusting contacts. -
Page 4: General Technical Description
™ The Lectrosonics Digital Hybrid Wireless system overcomes channel noise in a dramatically new way, digitally encoding the audio in the transmitter and decoding it in the receiver, yet still sending the encoded information via an analog FM wireless link. -
Page 5: Input Limiter
Two rotary switches, located on the side panel of the unit, provide 256 frequencies in 100 kHz steps over a 25.5 MHz range. This alleviates carrier interference problems in mobile or traveling applications. ANTENNA The antenna on the LM consists of a permanently attached flexible 1/4 wavelength galvanized steel cable. Rio Rancho, NM – USA... -
Page 6: Controls And Functions
LM is turned on, replace the battery. A NiMH batteries give little or no warning when they are depleted. If you wish to use NiMH batteries in the LM transmitter, you will need to manually keep track of the operating time. Start with a fully charged battery, then measure the time it takes for the Power LED to extinguish. -
Page 7: Modulation Leds
NiMH batteries; although, it may be possible to track battery status using the Battery Timer function available in a number of Lectrosonics receivers. (Refer to the associated receiver manual to determine is this function is available in your situation.) -
Page 8: Operating Instructions
The unit is supplied from the factory as a 400 series transmitter 1) Ensure the battery is good and installed properly by setting the LM’s Power ON/ OFF switch to ON and verifying the Power LED glows green, then set the Power ON/OFF switch to OFF. -
Page 9: Operating Notes
This indicates full modulation and is the -10 LED optimum setting for the transmitter’s gain. 7) Once the LM’s audio gain has been set, the remaining components of the audio system can be energized and adjusted. OPERATING NOTES DO NOT USE THE AUDIO LEVEL control for controlling the volume of your sound system or recorder levels. -
Page 10: 5-Pin Input Jack Wiring
Low impedance microphone level input for dynamic microphones. Also accepts hand- held electret microphones that have their own battery or power supply. PIN 4 4 k Ohm source load for non-Lectrosonics electret microphones. Use in conjunction with other pins to provide attenuation of high level input signals. PIN 5 40 k high impedance, line level input for tape decks, mixer outputs, musical instruments, etc. -
Page 11: Line Level Signals
Frequency Agile UHF Belt-Pack Transmitter capacitors can be installed on the mic wires inside the TA5F connector housing. The 330 pF capacitors are available from Lectrosonics. Please specify the part number for the desired lead style. Leaded capacitors: P/N 15117... -
Page 12: Troubleshooting
4. RF interference. Reset both transmitter and receiver to a clear channel. EXCESSIVE FEEDBACK 1. Transmitter gain (audio level) too high. Check gain adjustment and/or reduce receiver output level. 2. Transmitter too close to speaker system. 3. Mic is too far from user’s mouth. LECTROSONICS, INC. -
Page 13: Specifications And Features
Frequency Agile UHF Belt-Pack Transmitter SPECIFICATIONS AND FEATURES Operating frequencies: 537.600 to 607.900 MHz 614.100 to 767.900 MHz 768.000 to 805.600 MHz (export only) Frequency selection: 256 frequencies in 100 kHz steps RF Power output: Greater than 50 mW Pilot tone: 25 to 32 kHz frequency;... -
Page 14: Service And Repair
There are no adjustments inside that will make a malfunctioning unit start working. The LECTROSONICS Service Department is equipped and staffed to quickly repair your equipment. In-warranty repairs are made at no charge in accordance with the terms of the warranty. Out-of-warranty repairs are charged at a modest flat rate plus parts and shipping. - Page 15 Frequency Agile UHF Belt-Pack Transmitter Rio Rancho, NM – USA...
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Page 16: Limited One Year Warranty
This warranty does not apply to used or demonstrator equipment. Should any defect develop, Lectrosonics, Inc. will, at our option, repair or replace any defective parts without charge for either parts or labor. If Lectrosonics, Inc. cannot correct the defect in your equipment, it will be replaced at no charge with a similar new item.
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