Руководство по эксплуатации Verizon WT-781

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OPERATING INSTRUCTIONS
WT-780
WIRELESS TUNER
WT-781
Please follow the instructions in this manual to obtain the optimum results from this unit.
We also recommend that you keep this manual handy for future reference.
TOA Corporation

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GENERAL DESCRIPTION The TOA WT-780 (WT-781) is a VHF high band tuner employing a compressor/expander system noise reduction circuit to minimize the influence of high-frequency noise generated from digital equipment such as personal computers and word processors. It also features a dual (noise and tone) squelch system that allows the receiver to receive radio signals only from the microphone. HANDLING PRECAUTIONS Check for proper operating voltage of your tuner before use. Supplied AC/DC adaptor

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NOMENCLATURE [Top View] Antenna Peak Indicator Lights when excessive input into wireless microphone is input. Reception Indicator Lights when the unit receives a radio signal from the microphone. Power Indicator Lights when the power is supplied. [Front View] Volume Control Adjusts the output volume. Audio Output Connector —10 dBV/Output Impedance : 10 k unbalanced [Side View] DC IN (12V DC) Input terminal for external power supply. Connect the supplied AC/DC adaptor to this connector. — 3 —

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OPERATIONS (2) Set up the antenna vertically and stretch to its full length. (1) Connect the AC/DC adaptor to the DC input terminal and wall outlet. (3) Set the microphone power switch to ON. The reception indicator lights. (4) Adjust the volume control. *Note on peak indicator When the peak indicator lights frequently, your voice can be distorted at a microphone circuit. In such cases, move your mouth away from the microphone so that the peak indicator lights at a maximum level. If the micropho

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INSTALLATION PRECAUTIONS Install the unit at the location accessible to the wall outlet easily. Install the tuner away from high frequency noise generating equipment such as fluorescent lamps and personal computers, whenever possible. Avoid installing a receiving antenna in close proximity to the steel frames of the building or lockers. The clearance between the antenna and the wall needs to be at least 30 cm (1 foot). ADDITIONAL EXPLANATIONS 1. Squelch Circuit In a receiver employing only a noi

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SPECIFICATIONS WT-780 (for USA,UK,AUSTRALIA) WT-781 (for CANADA) Power Requirements 120V AC, 60 Hz / 230-240V AC, 50 Hz / 240V AC, 50 Hz Supplied AC/DC adaptor must be used. Power Consumption 3 W DC Input 12V DC, 110 mA max. Receiving Frequency 169.445 MHz~171.905 MHz (FCC Part 90/USA) 174.250 MHz~215.250 MHz (FCC Part 74/USA, D.O.C/CANADA) 173.8 MHz~175.0 MHz (MPT1345/UK) 202.1 MHz~203.7 MHz (DOC 60 AUSTRALIA) Receiving Sensitivity Under 20 dB µ V(S/N : 75 dB/Deviation : 15 kHz) (S/N : 80 dB/De