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UM400a

Frequency Synthesized 100 mW UHF Belt-Pack Transmitter

INSTRUCTION MANUAL

Rio Rancho, NM, USA

www.lectrosonics.com

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Featuring

Digital Hybrid Wireless

™

Technology

Содержание UM400a

Страница 1: ...equency Synthesized 100 mW UHF Belt Pack Transmitter INSTRUCTION MANUAL Rio Rancho NM USA www lectrosonics com Fill in for your records Serial Number Purchase Date Featuring Digital Hybrid Wireless Te...

Страница 2: ...UM400a LECTROSONICS INC...

Страница 3: ...ll 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 Frequenc...

Страница 4: ...orma See 5 Pin Input Jack Wiring for details UM400a Block Diagram General Technical Description tion via an analog FM wireless link This proprietary algorithm is not a digital implementation of an ana...

Страница 5: ...rious RF from the wrong transmitters can t open the receiver squelch Input Limiter The transmitters employ a digitally controlled analog audio limiter just before the analog to digital converter The l...

Страница 6: ...ntrol Modulation LEDs ANTENNA Jack Power LED 1 6M 100K Frequency Select Switches 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 1 2 3 4 5 6 7 8 9 A B C D E F Low Frequency Roll Off Control Controls and Functions N...

Страница 7: ...block Frequency Select Switches Two 16 position rotary switches adjust the center fre quency of the carrier The 1 6M is a coarse adjustment and the 100K is the fine adjustment Not available on earlier...

Страница 8: ...es transmitter 1 Ensure the battery is good 2 Turn off the transmitter 3 With a small screwdriver one is included with your unit set the Frequency Select Switches to CC for Change Change 4 Power up th...

Страница 9: ...tly or glow a steady red This condition may reduce the dynamic range of the audio signal If the audio level is too low neither LED will glow or only the 20 LED will glow green This condition may cause...

Страница 10: ...Audio Amplifier BIAS MIC BIAS SELECT LINE IN GND 30uF 6 VDC Servo Bias Pin 4 to Pin 1 0 V Pin 4 Open 2 V Pin 4 to Pin 2 4 V To Limiter Control 30uF 750 Ohm 100 Ohm 2 7K 200 Ohm 3 3uF 100 Ohm Audio Inp...

Страница 11: ...nections A common mistake is to use the connector body as an audio ground The connector body is already used as an RF ground on VHF models and no other use is permitted NOTE This termination is requir...

Страница 12: ...e mic is wired as directed and you are having dif ficulty with squealing high noise or poor frequency response RF is likely to be the cause The best RF protection is accomplished by installing RF bypa...

Страница 13: ...a three wire microphone such as a COS 11 very quick and easy However these wirings will not work with older Lectrosonics transmitters such as the UM400 UM200 etc If you need the two wire Countryman B...

Страница 14: ...g chart to determine the correct replacement antenna BLOCK FREQUENCY CAP ANTENNA RANGE COLOR WHIP LENGTH 20 512 000 537 500 Black 4 98 21 537 600 563 100 Brown 4 74 22 563 200 588 700 Red 4 48 23 588...

Страница 15: ...AUDIO 2 Receiver output is disconnected cable is defective MODULATION or mis wired 3 Sound system or recorder input is turned down DISTORTED SOUND 1 Transmitter gain audio level is far too high Check...

Страница 16: ...UM400a LECTROSONICS INC 16...

Страница 17: ...control Modulation indicators Dual bicolor LEDs indicate modulation of 20 10 0 10 dB referenced to full modulation Low frequency roll off 18 dB octave 35Hz to 150Hz Audio frequency response overall sy...

Страница 18: ...rs Returning Units for Repair For timely service please follow the steps below A DO NOT return equipment to the factory for repair without first contacting us by email or by phone We need to know the...

Страница 19: ...Frequency Synthesized UHF Belt Pack Transmitter Rio Rancho NM 19...

Страница 20: ...Lectrosonics Inc will pay for the cost of returning your equipment to you This warranty applies only to items returned to Lectrosonics Inc or an authorized dealer shipping costs prepaid within one yea...